Grand Order


 * For the highest law of magi, see Grand Order.

Quest for the Holy Grail "Grand Order", named after the highest law of magi due to their critical importance, are quests performed by the Chaldea Security Organization in order to reverse the eradication of mankind during the events of Fate/Grand Order.

Human Order Incineration Incident
The Human Order Incineration Incident (人理焼却事件) is the first crisis Chaldea faces.

Remnant Order
The Remnant Order (レムナントオーダー) is the mission to solve what was left behind after the destruction of Goetia, the remaining four Demon Gods and the Subspecies Singularities they bring forth.

Human Order Revision
The Human Order Revision (人理再編) is the second crisis faced by Chaldea. It is the whitening of the world enacted by the Alien God and the Crypters, erasing the current Human Order to supplant it with one of the seven Lostbelts.

Singularity
A Singularity (特異点) is an unobservable region that does not exist within Chaldea's recorded history. It's as if a hole has opened up within the timeline, a hole that is separate from the regular temporal axis.

Certain Singularities have their own individual circumstances and mechanisms, however the Goetia-style Singularities involved in the Human Order Incineration Incident follow a general pattern and possess common characteristics. They are sustained by a Goetia-manufactured Holy Grail, which is given to a certain individual within a key historical time period, typically someone who will use it to cause major disruption to history and destabilize the Human Order Foundations. When this is insufficient, a Demon God host may further manipulate individuals and events in order to achieve this end.

The power of the Grails and the circumstances within the Singularities allow for the summoning of Servants and their continued existence in the world, even without a Master. Various Servants are summoned to the era under these conditions without individuals performing a summoning ceremony. The Servants often play a key role in bringing about the disruption to history, as well as resolving it.

The seven primary Singularities involved in the Human Order Incineration Incident have a Human Order Foundation Value associated with them.

The emergence of large Singularities cause disturbances and fluctuations in time which spread out tsough history like a wave, and can cause other, smaller Singularities to emerge at other points in time.

There are also existences known as Mobile Singularities (移動特異点) which cause a similar distortion, though usually on a smaller scale. These include Sliders such as the female Miyamoto Musashi.

Because of humanity's destruction in 2015, due to the collapse of the Human Order Foundation, Chaldea is forced to travel to Singularities in the past in order to fix the irregularities of history caused by various Holy Grails. The 'Grand Order' is a "name for those who would rise up against human history for the sake of humanity, and combat fate itself."

Lostbelt
As opposed to the Greater History of Man, the history of 'winners' born from correct choices and proper prosperities leading to the "present", the history of 'losers' born from the wrong choices and mistaken prosperity is cut off. Considered "unnecessary" and cut off from becoming even parallel worlds, this history which has hit a dead end is known as a Lostbelt.

Following the attack on Chaldea in 2017, the freezing of the world and the declaration of rebellion against the Greater History of Man, with the threat of a regression into the Age of Gods and the recreation of the world, the survivors are forced to use an experimental method of navigating through imaginary number space, through the Lostbelts, in order to resolve the incident.

After all of the Lostbelts have been established, the Crypters seek to expand the "domain" of their own Lostbelts, which will eventually clash with the other Lostbelts. The one that is built by greater Human Foundation will end up overtaking the weaker one and use it as "nutrients". This process will allegedly continue, until only one Lostbelt is remaining.

Koyanskaya‎ describes the Greater History of Man as "easy mode" and the Lostbelts as "hard mode", though the veracity of her statement has yet to be fully determined.

Similar to the Human Order Foundation Values associated with the Singularities, the Lostbelts have an associated value known as a Lost Depth (異聞深度). Lost Depth is a rank to display how much the Human Order in a Lostbelt has deviated from that of the Greater History of Man.

Procedure
Utilizing Rayshift, the souls of selected subjects are projected into the past, forming Spiriton avatars with the capacity to interfere with historical events. By the efforts of time-travelling agents, anomalous temporal singularities may be eliminated.

The exact procedure of the Grand Order differs depending on the nature of the Singularity, however there are two general goals; the correction or elimination of the distortions resulting from or responsible for the Singularity, and the retrieval or destruction of the Grail supporting the Singularity.

The words of Kirei Kotomine suggest that rayshifting could have been used against the forces of the Lostbelts, with Chaldea being attacked and rendered inoperable in order to eliminate the threat. Unable to rayshift, the survivors were forced to use a method of diving through Imaginary Number Space, using the Shadow Border's Paper Moon system.

Singularities
The initial Singularity detected by Chaldea, believed to be the cause of humanity's future extinction, was located in Fuyuki, Japan in 2004 AD and codenamed Singularity F. The mission to explore and eliminate the Singularity was designated the First Order (ファーストオーダー).

Following the successful elimination of Singularity F and the revelation concerning the incineration of the future, seven even larger Singularities were detected in the past. As Chaldea embarked on the mission of eliminating these Singularities to return history to its rightful course and restore the future, the name 'First Order' was abandoned for 'Grand Order' - a mission named after the highest law of magi, in view of its importance.

During the course of this mission, multiple smaller Singularities emerged and were resolved. When the seven major Singularities were eliminated, an attack on Chaldea led to the final battle against Goetia, the Beast posing as the King of Magic, and the 72 Demon Gods which comprised it, in its temple - a Singularity thought to be the final one, the conclusion of which brought an end to the Human Order Incineration Incident (人理焼却事件).

However, a number of Singularities have emerged since Goetia's defeat, in part due to several Demon Pillars who escaped during the temple's collapse and a few other parties.

Fuyuki: The Contaminated City in Flames
Fuyuki: The Contaminated City in Flames (炎上汚染都市) was the initial Singularity detected by Chaldea, codenamed Singularity F (特異点F) and located in A.D. 2004.

Servants

The participants have varied between different mediums.

Orleans: The Wicked Dragon Hundred Years' War
Orleans: The Wicked Dragon Hundred Years' War (邪竜百年戦争), alternatively The Holy Maiden Savior (救国の聖処女), was the first of the seven primary Singularities in the Human Order Incineration Incident. Located in France, A.D. 1431, it's Humanity Foundation Value was C+.

Non-Servants

Septem: The Eternal Madness Empire
Septem: The Eternal Empire of Madness (永続狂気帝国), alternatively The Emperor of Roses (薔薇の皇帝), was the second of the seven primary Singularities in the Human Order Incineration Incident. Occurring in the Roman Empire of A.D. 0060, it's Humanity Foundation Value was B+.

Servants

Non-Servants

Okeanos: The Four Sealed Seas of the End
Okeanos: The Four Sealed Seas of the End (封鎖終局四海), alternatively The Navigator of the Storm (嵐の航海者), was the third of the seven primary Singularities in the Human Order Incineration Incident. Located in A.D. 1573, it's Humanity Foundation Value was A.

Non-Servants

London: The Death World in the City of Demonic Fog
London: The Death-Barrier of the City of Demonic Fog (死界魔霧都市), alternatively The Knight of Londinium (ロンディニウムの騎士), was the fourth of the seven primary Singularities in the Human Order Incineration Incident. Located in London, A.D. 1888, it's Humanity Foundation Value was A-.

Non-Servants

E Pluribus Unum: The Grand Battle of Legends in North America
E Pluribus Unum: The Great North American War of the Myths (北米神話大戦), alternatively The White Cloth of Steel (鋼鉄の白衣), was the fifth of the seven primary Singularities in the Human Order Incineration Incident. Located in North America, A.D. 1873, it's Humanity Foundation Value was A+.

Servants

Non-Servants

Camelot: The Sacred Round Table Realm
Camelot: The Sacred Round Table Realm (神聖円卓領域), alternatively The Shining Airgetlám (輝けるアガートラム), was the sixth of the seven primary Singularities in the Human Order Incineration Incident. Located in the, A.D. 1273, it's Humanity Foundation Value was EX.

Servants

Non-Servants

Babylonia: The Absolute Frontline in the War Against the Demonic Beasts
Babylonia: The Absolute Frontline in the War Against the Demonic Beasts (絶対魔獣戦線), alternatively The Chain of Heaven (天の鎖), was the last of the seven primary Singularities in the Human Order Incineration Incident. Located in Mesopotamia, B.C. 2655, it's Humanity Foundation Value was A++.

Servants

Non-Servants

Salomon: The Grand Time Temple
Salomon: The Grand Time Temple (冠位時間神殿) was the Final Singularity (終局特異点) of the Human Order Incineration Incident, occurring in A.D. 2016.

Servants

Non-Servants

Shinjuku: Malignant Quarantined Demonic Realm
It occurred in Shinjuku, Tokyo, Japan, in A.D. 1999. Servants

Non-Servants

SE.RA.PH.: Deep-Sea Cyber-Nirvana
SE.RA.PH.: Deep-Sea Cyber-Nirvana (深海電脳楽土) was a special Singularity which emerged in the aftermath of the Human Order Incineration Incident. Originating on Chaldea's Seraphix facility in the North Sea, it occurred in the, supposedly in 2030 A.D.

Servants

Non-Servants

Agartha: The Mythical Subterranean Society
Agartha: The Mythical Subterranean Society (伝承地底世界, Denshō Chitei Sekai), alternatively The Woman of Agartha (アガルタの女) or Subspecies Singularity II (亜種特異点 II), was the second of four major Singularities which emerged in the aftermath of the Human Order Incineration Incident. It occurred in Central Asia in A.D. 2000.

Servants

Non-Servants

Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses
Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses (屍山血河舞台, Shizan Ketsuga Butai), alternatively the Tournament of the Seven Blade-Master Heroic Spirits (英霊剣豪七番勝負) or Subspecies Singularity III (亜種特異点 III), was the third of four major Singularities which emerged in the aftermath of the Human Order Incineration Incident. It occurred in the Shimosa province of Japan in A.D. 1630. Servants

Salem: The Forbidden Advent Garden
Salem: The Forbidden Advent Garden (禁忌降臨庭園セイレム), alternatively Heretical Salem (異端なるセイレム) or Subspecies Singularity IV (亜種特異点 IV), was the fourth of four major Singularities which emerged in the aftermath of the Human Order Incineration Incident. Engulfing present day Salem, Massachusetts, it recreated the events which occurred in the town in A.D. 1692.

Servants

Non-Servants

Lostbelts
During the interrogation of Chaldea's staff and the arrival of the new director Goldolf Musik, Chaldea was attacked by the and Anastasia, a Servant from the Lostbelts. Being weakened and with the betrayal of Koyanskaya‎ and Kirei Kotomine, the survivors were forced to flee the facility, fast being rendered inoperable and uninhabitable. Before Chaldeas was fully sealed, it was noted that no celestial bodies other than the Earth were visible.

As the survivors escaped in the Shadow Border, meteor-like objects descended from the sky and the world was frozen over. A broadcast on frequencies normally used by Chaldea then began, from Kirschtaria Wodime, a member of Chaldea's A-Team. He declared a rebellion against the Greater History of Man, deeming that their growth was not correct, and that the World would be filled with mysteries beyond the reach of Man and be regressed into the Age of Gods. He further declared that gods would descend from distant skies for this purpose and through seven seeds, leaders would be selected to remake the planet, with those from the Greater History of Man not permitted to participate or observe, frozen and brought to an end as of 2017. Calling himself the representative of the seven Crypters, he ended by announcing to the survivors of Chaldea that the history of the planet would be succeeded by them.

Unable to rayshift with the loss of Chaldea, the survivors were forced to use an experimental method to navigate through imaginary number space and the Lostbelts, in order to resolve the incident connected to the Filtering Outsider Phenomenon (濾過異分子現象).

Anastasia: Permafrost Empire
Anastasia: Permafrost Empire (永久凍土帝国), alternatively Princess of the Land of Beasts (獣国の皇女), Lostbelt No. 1 (ロストベルト No. 1) and the Russian Lostbelt (ロシア異聞帯), is the first of the seven known Lostbelts. Originating in Russia, 1570 A.D., it's Lost Depth is D and it's associated Crypter is Kadoc Zemlupus.

Setting
This Lostbelt diverged from that of Greater History of Man in 1570 AD when an asteroid struck and plunged the world into an ice age. Most humans died, and while Russians were used to the cold and prepared for such weather, 90% of their population perished and they were on the cusp of extinction. Ivan the Terrible and his mages were able to save the country by combining humans with magical beasts, creating the Yaga, with Ivan himself becoming the first. The D Rank Lost Depth here is caused by the Eternal Winter and humanity all but extinct (still alive but as Yaga).

Participants
Servants

Non-Servants

Götterdämmerung: Eternal Ice-Flame Century
Götterdämmerung: Eternal Ice-Flame Century (無間氷焔世紀), alternatively ■■■ of the Unfading Flame (消えぬ炎の■■■), Lostbelt No. 2 (ロストベルト No. 2) and the Norse Lostbelt (北欧異聞帯), is the second of the seven known Lostbelts. Originating in 1000 BC, it's Lost Depth is B+ and it's associated Crypter is Ophelia Famulthorone.

Setting
The Lostbelt diverged from the Greater History of Man in 1000 BC, during the events of. Surtr, who was supposed to bring the Twilight of the Gods, devoured, gaining his Authority and becoming immensely powerful. He decided to bring about the Twilight of the World, killing many gods and giants before being sealed within a false Sun by Odin, who died afterward. However, before dying Odin merged the goddess Skadi with Scáthach, creating Skadi-Scáthach, the King of the Lostbelt, with the purpose of protecting the humans. As Ragnarok was thus interrupted, the world became ravaged by fire and ice, unable to continue past Ragnarok.

Skadi-Scáthach established multiple villages for humans, with the support of the Valkyrie. However, in order to keep the giants at bay, humans are required to reproduce at the age of fifteen or be sacrificed to the giants. Once humans reach the age of twenty-five they are nonetheless forced to be sacrificed. The B+ rank Lost Depth is caued by Earth no longer having humans with the remainder forced to live in the Realm of Shadows. Also, the Realm is only capable of maintaining a few hundred humans before collapsing as such, humans who fail to reproduce at 15 or reach the age of 21 are sacrificed to both appease the giants and maintain the Realm.

History
As the survivors of Chaldea travel onward to the Wandering Sea, Sherlock Holmes expresses concern of running out of food supplies, since it'll take a few days to get there. Ritsuka suggests diving into Imaginary Numbers Space, but Leonardo da Vinci forbids it. She explains the coordinates being sent from the Wandering Sea are constantly changing, making too dangerous to establish a connection for a Imaginary Numbers dive. Secondly, the Shadow Border doesn't have enough energy to do another dive long enough for them to survive it. Goldolf Musik realizes they will have to cross the Lostbelt that was identified earlier in that case, and asks where it is located. Da Vinci answers it covers the entirety of the Scandinavian peninsula. Sherlock asks her if they should cross the peninsula, or travel by sea via Poland or Germany. She answers it may be too difficult to cross the ocean with the Border. She also considers it too risky to cross the oceans anyway since their current conditions are unknown, so she recommends going by land. Ritsuka and Goldolf then ask about the condition of the other European countries. Da Vinci answers there isn't any reaction from Greece's direction, and she is unable to observe Britain with the Border's current equipment. Goldolf orders Jingle Abel Meuniere to stop to maintenance the Border if he finds anything that can be used as a shield. He orders Da Vinci to check on Mash Kyrielight's condition since she'll be performing as a Servant again. He then orders Sherlock to come with him to the cells to interrogate Kadoc Zemlupus about the Crypters and Kirschtaria Wodime's goal. Sherlock says he would like to ask Kadoc about the Fantasy Trees and the Sirius Light. The Border's alarm goes off; Da Vinci reveals they have a pursuer from the Russian territory coming at them at 90 km/h. An RPG then hits the Border's portside, managing to damage its composite armor made from modern technology and magecraft. Sherlock orders Meuniere to tell the staff in the portside passage to retreat to the engine room. He says he and Mash will go to the portside passage, where she'll deploy a barrier in preparation for another shot. It is then revealed their pursuer is the priest from the Russian Lostbelt, running at high speeds. The Border is hit by another rocket, but Mash's shield mitigates much of the damage. Goldolf realizes the Priest's rocket launchers were made by Koyanskaya upon seeing the NFF emblem, which explains how it can damage the Border's armor. Da Vinci then alerts everyone that Kadoc has escaped to the deck, so Ritsuka and Goldolf go after him.

Participants
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Non-Servants

SIN: Land of Unified Knowledge
SIN: Land of Unified Knowledge (人智統合真国), alternatively Crimson Beauty Under the Moon (紅の月下美人), Lostbelt No. 3 (ロストベルト No. 3) and the Chinese Lostbelt, is the third of the seven known Lostbelts. Originating in 210 BC, it's Lost Depth is E and it's associated Crypter is Hinako Akuta.

Setting
The Lostbelt diverged from the Greater History of Man in 210 BC, during the end of the reign of Qin Shi Huang. Qin Shi Huang, during his search for an elixir of life, discovered the artificial body of Nezha, which he used to develop technology that allowed him to continue existing in an artificial form. This method allowed Qin Shi Huang to continue ruling China forever. Due to his “immortality” and technological equipment, he eventually managed to conquer the whole world after years of wars, dubbing this new empire as the Eternal Sin Empire.

After his conquest was completed, Qin Shi Huang created a planetary defense system that surrounded the whole Earth, called the “Great Wall”, which allowed him to monitor everything in the world. Despite the advanced technology in his control, the common folk were kept uneducated, with no access to this technology. Thus, the society of the empire remains at a basic farming level. However, the people live in complete peace, with no conflicts occurring over hundreds of years. Qin Shi Huang also artificially “froze” many of the greatest warriors that emerged over the years, so that their talents could be used at a later date. This includes Xiang Yu, Qin Liangyu and Han Xin.

The E-Rank Lost Depth is very low due to humanity not being in any danger. The main divergence is due to technology stagnation amongst everyone other then Emperor Qin.

Participants
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Non-Servants

Yuga Kshetra: Genesis Destruction Cycle
Yuga Kshetra: Genesis Destruction Cycle (創世滅亡輪廻), alternatively Black Final God (黒き最後の神), Lostbelt No. 4 (ロストベルト No. 4) and the Indian Lostbelt, is the fourth of the seven known Lostbelts. Originating in 11900 Deva Vatsara, it's Lost Depth is A and it's associated Crypter is Scandinavia Peperoncino.

Setting
The setting in this lostbelt is that during the events of the ending of the Mahabharata, Arjuna absorbed all of the Hindu Gods starting with Krishna. By becoming Arjuna (Alter) he became a living god with a skewed personality. He then decided that as a perfect being he must also live in a perfect world befitting the God that he is. Originally the Yuga System in Hindu Mythology will cause the destruction and reincarnation of the World and takes place in a very long time (after several millennia) however due to Arjuna (Alter)'s impatience, it is occuring on a weekly basis instead.

While doing this, any person who even has the tinest bit of "evil", or "considered to be evil" by God (Arjuna Alter) would be killed, no exceptions. Even worse, those people cannot reincarnate and will be forever forgotten. The destruction and recreation of the world is also messed up because it's not a complete blank start-over like in Hindu myth, but the reshaping of the world by slowly removing elements that is deemed to be imperfect by God. To live in this world and considered to be good, you only need to pray to God everyday, obey everything God wants and you don't need weapons or fighting. If you fail, you are considered to be evil and thus holy beasts and Kali will come and attack, begin the Yuga cycle to remove the "evil".

Arjuna Alter wants to first create the perfect world then extend it to the entire galaxy. According to Ashiya Doman, once the Major Yuga is in effect, that would be the end of the universe and the trichiliocosm.

The A-Rank Lost Depth in this Lostbelt is due to Arjuna Alter speeding up the Yuga System to a weekly reset. For the Lostbelt king only those who are deemed worthy will reincarnate next cycle, he is slowly eliminating people from existence, including memories and actions.The problem is that the king is an amalgamation of gods, the "perfect and purest being" so he will never find anyone really worthy except himself. With this, the numbers of living humans are decreased with each reincarnation cycle because the king eliminated those who deemed unworthy, until no human remains and humanity would perish eventually.

Participants
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Non-Servants

Atlantis: Ancient Titans' Ocean
Atlantis: Ancient Titans' Ocean (神代巨神海洋), alternatively The Day God Is Shot Down (神を撃ち落とす日), Lostbelt No. 5 (ロストベルト No. 5) and the Atlantic Lostbelt (大西洋の異聞帯), is the fifth of the seven known Lostbelts. Originating in 12000 BC, it's Lost Depth is A+ and it's associated Crypter is Kirschtaria Wodime.

Participants
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Non-Servants

Other
During the Human Order Incineration Incident and the events afterwards, Chaldea also tackled a number of distortions and incidents other than the designated Singularities and Lostbelts. These included space-time distortions which would have become fully fledged Singularities if left unchecked, certain events in alternative timelines, places visited through dreams and others.

Kara no Kyoukai: The Garden of Order
Kara no Kyoukai: The Garden of Order, also known as Ogawa Heim, refers to an event, part of a collaboration between Fate/Grand Order and Kara no Kyoukai, which occurred during the Human Order Incineration Incident. It involved a distortion which would have become a Singularity if left unchecked, located in Mifune City, and based around the Ogawa Apartment Complex.

Setting
The distortion occurred in Mifune City near and within the Ogawa Apartment. After Solomon recovered it from the incinerated history, he ordered Edmond Dántes to turn the distortion into a Singularity, and bestowed upon him a system of curses to serve as the core. Additionally, Solomon summoned Mephistopheles to assist him, and separated the demon's good self from his evil self. However, Edmond, not sharing Solomon's goals, decided to transform the distortion into an eternal hell to fuel his need for vengeance. He ordered Mephistopheles to infiltrate Chaldea and convince Servants to come to the apartment. After the Servants rayshifted to Ogawa, their personalities were soon altered by the building's bizarre nature. Moreover, the resentment that the Servants felt attracted spirits of the dead to the apartment. In turn, the spirits were drawn into the core of the would-be Singularity with their resentment strengthening it. Before the arrival of Ritsuka Fujimaru and Mash Kyrielight, Shiki Ryougi was summoned into the distortion due to her connection to the apartment.

History
Ritsuka and Mash arrive in the distortion near the Ogawa Apartment Complex, where Ritsuka's Servants are located after they rayshifted into the distortion. They soon notice a Servant fighting ghosts and go to help her, but the ghosts are all eliminated when they get there. Mash tries to talk to the Servant, but she refuses and attacks her and Ritsuka. The battle ends in an interruption however, but Romani Archaman informs Ritsuka and Mash that the Servant possesses the Mystic Eyes of Death Perception. The Servant then apologizes for attacking the pair and starts to leaves. Ritsuka stops her however, and she tells them that she's going to tear the apartment down to stop the undead within from spreading out to the neighborhood. She continues that the undead are running rampant in the apartment due to Servants living there. The Servant tells Mash and Ritsuka that she is a Pseudo-Servant and that she was summoned into the Singularity possibly due to her connection with the building. She then tells them her name is Shiki Ryougi, and after learning their names, she decides to help them. Asked by Romani of the apartment's condition, Shiki states that it is merely filled with enemies and traps. She and the others then enter the apartment.

Entering the apartment, the group investigate the first room, which is oddly cold despite the thermometer showing regular temperature. Shiki points out Musashibou Benkei's presence in the room. Mash tries to talk to him, but he attacks the groups saying they abandoned a respectable way of life. After defeating him, Romani explains that as a Servant contracted to Chaldea Benkei will eventually return there. Shiki then explains that what happened to Benkei has happened to every tenant before, and tells Ritsuka that they did the right thing in defeating Benkei.

Continuing their investigation, Mash asks Shiki why the apartment is cold, why the dead walk, and if the apartment is Mage's Workshop built in secret. Shiki explains though that the apartment was publicly built without any Magecraft involved. She continues the apartment was built to collect the death of its residents, who are reborn when morning comes and die when night falls in an endless loop. Afterwards, Shiki unlocks Room 102, and she enters the room with the others. Inside they are greeted by Mephistopheles, and claims that he lured Ritsuka's Servants to the apartment. He then attacks the group after explaining he took the room's previous tentant's role of cutting bodies apart. After his defeat, Mephistopheles tells the group to solve the mystery and seemingly disappears. But, before the group continues their investigation however, Mephistopheles reappears to everyone's shock. He explain that the one they defeated was evil him and the current him is the good version. He reveals that he has nothing to do with the current situation when asked by Romani, and reveals he was summoned to the apartment by Solomon. Mephistopheles continues that Solomon split him into two, and states his evil self infiltrated the Chaldea and convinced the Servants to come to the apartment. He then says that he escaped from Solomon's contract and waited for the group's arrival. Now joined by Mephistopheles, the group continue their investigation.

Continuing to explore the apartment, Shiki talks about how it is collecting stuff unrelated to its original design and turns it evil. Mephistopheles compares the apartment to a hollow tree from which one will fall into the eternal abyss if they're unlucky when peeking into it. He then asks about Shiki's Mystic Eyes, to which she briefly explains their function. Suddenly, Henry Jekyll appears and asks Mephistopheles if the others are the new tenants. He tells the group that he is the manager of the corridor, and says as new arrivals they haven't mutated. Jekyll advises them to stay on the first floor a little longer, and invites them to stay in his room. However, the group reject his invitation, which he responds to by turning into Mr. Hyde and attacks. Shiki block it however and complains how Hyde isn't strong enough for her. Enraged by her statement, he fights her and the others but is defeated. Returning to normal, Jekyll apologizes for his transformation, and claims he and Hyde were manipulated. He warns Ritsuka not to trust Mephistopheles, and prepares to hand them the key to the next floor. However, he changes back into Hyde and attacks Ritsuka, but he's blocked again by Shiki, who takes the key from him. She complains she wanted to meet Jekyll, and reveals Hyde was the only personality and he was only pretending to possess dual personalities. After Hyde disappears, Mephistopheles reveals Jekyll mutated upon his arrival at the apartment, rotting his body and soul away until his main personality vanished. Asked by Mash, he explains the Servants are being affected by the resentment in the apartment and their alignments are changed as a result. Afterwards, the group move to the second floor.

Entering a room on the second floor, the group encounters Elizabeth Bathory. She threatens to sever Ritsuka's hands and feet and burn their internal organs before attacking the group. After being defeated, Elizabeth complains of her misery and humiliation before finally disappearing. The group then moves to the next room after receiving a transmission from Da Vinci regading Elizabeth's return to Chaldea.

Investigating a room on the third floor, the group encounters Boudica. She welcomes Ritsuka and Mash, and asks them if they're here to bring her back to Chaldea. Boudica scolds them for not ringing the door bell first, and offers Ritsuka to have some stew she recently made. However, when Mash says they'll bring her back to Chaldea after eating, Boudica suddenly turns aggressive. She refuses to return to Chaldea, amd angrily states how the Romans took everything from her. She continues that she forgotten about it by distracting herself with saving humanity, then she attacks the group. After being defeated, Boudica realizes what she did and states the irony of how title of Queen of Victory despite losing the battle most important to her before disappearing.

Nearly complete with their investigation of fourth floor, the group are confronted by Artoria Alter. She warns them to leave as the floor above is filled with vengeful ghosts. The group prepare to fight, believing her to be the mastermind behind the incident. However, Mash and Mephistopheles' misconception about her appearance cause her to remove her armor. She tells them that if she'll forgive their disrespect if they can survive and prove their bravery to her before fighting them. After being defeated by them, Artoria Alter realizes that Shiki has the Mystic Eyes of Death Perception. She states the group should be fine going forward as along as Shiki is with them. Artoria Alter tells them that she has been weeding out those who can't handle the grudges of the apartment, but she know they'll survive if Shiki is with them. She also tells them that she came to the apartment of her accord, and reveals Solomon attempted to convert the apartment into a Singularity after recovering it from the incinerated history. She also reveals this plan failed as Solomon sent the wrong job to do the job, which resulted in the apartment becoming a tower that attracts and imprisons Servants, converting them into demons. Artoria Alter then warns that the apartment will someday become the Singularity called "Hell", though she states it has no bearing on the incineration of humanity. Deciding to rescue the remaining Servants, the group continue their investigation.

Later, Ritsuka has the group investigate outside, where Shiki senses a presence. Suddenly, a Servant surrounded by darkness appears before them. He asks the group who they are and why they're killing ghosts. He continues that the ghosts are souls who were unrewarded in life, and their regrets kept them from moving to the afterlife. The Servant states that the ghosts need peace, saying that if Hell denies them he'll create a Hell by using the grudge filled apartment. He then tells the group not to stand in his way and leaves. After he leaves, the group are suddenly confronted a ghost different from the others. Mephistopheles warns Ritsuka that the ghost reaching a state near that of Primate Murder, and states they're all going to die now. However, Shiki states that they would be dead if the ghost was a real Monster of Gaia, and reveals that it is a defective Monster of Alaya. She then tells the group to fight the ghost, and suddenly reintroduces herself with a new appearance to Mash's confusion. Shiki tells them that she didn't want to reveal herself but had no choice given their opponent, which further confuses Mash. After destroying the ghost, she returns back to normal after tripping over a tree root. She mistakes the victory as Ritsuka and Mash's, but Mash corrects her. Cath Palug then gives a key to her that he found.

Back in the fifth floor of the apartment, the group are told by Romani that the core of the Singularity is nearby. Entering the room where the Singularity's core is located, they welcomed by another evil Mephistopheles. Mephistopheles reveals that behind his evil self is a greater ghost called the Great Avici Hell, which draws in spirits and turns them into a pillar. Evil Mephistopheles asks Ritsuka why they're rescuing the Servant since they changed of their will, and says the distortion is safe to ignore since it's a fake Singularity. He continues that even if humanity's foundations are restored, the distortion will continue to exist outside the world and continue gathering hatred and pain. Ritsuka answers they couldn't ignore the suffering inside the apartment, which evil Mephistopheles responds to by attacking the group. After the enemies are destroyed, Mephistopheles disappears as his evil self was destroyed, saying he had fun and bids farewell to everyone. Afterwards, Shiki states the apartment will return to its original abandoned state with the ghost gone. She then returns to Chaldea with Ritsuka and Mash.

The group return to the apartment to return the rest of the Servants to Chaldea. They enter a room on the sixth floor with very brights, where they encounter Frankenstein and Lu Bu. Frankenstein tells them how Nikola Tesla caused a power outage when he used his Noble Phantasm, so she also decided to waste to start wasting electricity. Lu Bu tells them that he helped her because Frankenstein looks like his daughter. Taking note of complaints about frequent outrages, Shiki and the others fight the room's tenants. After they're defeated, Frankenstein and Lu Bu return to Chaldea; she decides to unplug any device of unknown to converse electricity. Shiki reveals she got a request to resolve the cause of the power outages after Mash asked about her memo pad. She says her next request to remove a tenant who refuses to pay rent, and reveals the requests are for removing Servants living illegally in the apartment. She continues that her family owns the building, so she came to the apartment on their behalf to collect rent. Shiki then requests Ritsuka and Mash with eviction of the remaining Servants.

Following the complaints on Shiki's memo pad, the group start evicting the Servants from the apartment. They discover Anne Bonny and Mary Read refuse to pay rent after becoming internet addicts thanks to Blackbeard, so the pirates are removed from the building. Cú Chulainn is doing a illegal gambling, and with Scáthach's help, he is evicted. The group find that Oda Nobunaga and Okita Souji's room has been warped by the former's Reality Marble, which is returned to normal after she's defeated. The group evict Leonidas, who was trapped in a room due to his fear of ghosts. They discover Mysterious Heroine X had crashed into the apartment to continue her hunt for Sabers, which prompts Shiki to switch personalities and fight her. After X retreats, Shiki returns to normal with no memory of what transpired. She then tells Ritsuka and Mash that all of the Servants have been finally removed from the apartment.

Later, the group access the roof through the emergency exit, which Shiki unlocks with the key Cath Palug gave her earlier. There they confront the mysterious Servant, who they believe to the mastermind behind the distortion. He tells them that his grudge shall never fade away, and even if the apartment will disappear, his work will continue. He refuses to give up until he remembers everything of the island of despair, the tower of incarceration, and the castle of treasures. Mash calls him a Heroic Spirit that shouldn't exist in this world, but he refutes that Heroic Spirits and spirits of the dead are both curses. Then, the greater ghost the group destroyed earlier appears, which Mash believes to be another one. The Servant corrects her by saying that curses never disappear, and states the system of curses that Solomon given to him is now complete. He continues that resentment and killing will continue as long as other exists, and states the hatred of the sacrificed are his nourishment. After he states he'll be worshiped as a god for creating an eternal hell, the greater ghost prepares to attack the group. Mash senses that it has far more Magical Energy than before, and states its resentment increases with every defeat. She warns that if the ghost's resentment continues to increase at its current rate, they won't be able to destroy it. However, Shiki encourages her and Ritsuka to fight, even stating to the Servant that all things have an end. Impressed by her claims, he asks the group to show him that they can deny the evil of humans, and prove to him nothing can exist for eternity.

After the ghost is destroyed, the Servant starts to flee by jumping off the roof. Shiki goes to stop him, but Romani warns that the Servant is actually an illusion. Ritsuka stops her, and she kills the illusion of the Servant with a thrown knife. As he disappears, Romani asks him why he created the distortion and who ordered him to do so. The Servant answers he was ordered by Chaldea's enemy to transform the apartment into a Singularity. But instead he used it to fuel his need for vengeance by using the Servants' own desire for revenge. Ritsuka then asks the Servant for his identity before he disappears, but he only answers by saying "Attendre et esperer... (Wait and hope)". After he disappears, Romani informs the group that the distortion will eventually disappear. Mash, however, is curious about the mysterious Servant's identity, and wonders if they'll fight him again. Shiki tells her that he may become an ally, even saying he is someone with great love and hatred for humanity. With the distortion now resolved, the group return to Chaldea.

Participants
Servants

Non-Servants

Vengeful Demon's Wail at the Prison Tower
Vengeful Demon's Wail at the Prison Tower (監獄塔に復讐鬼は哭く) refers to an event which occurred during the Human Order Incineration Incident. It involved an incident where Ritsuka Fujimaru's soul was summoned into a recreation of within a different time and space.

Setting
Back when Ritsuka Fujimaru first encountered Solomon in London, the latter placed a cursed on the Evil Eye called on them when they stared in his eyes. The curse was activated at a later date when Ritsuka carelessly said Solomon's name. This caused their soul to be summoned into a recreation of the famed prison tower, Château d'If, within a different time and space that Solomon uses as a hunting ground. As well several Servants, whether they were contracted to Ritsuka or not, had fragments of their soul separated from them and trapped inside the tower. There they would serve as the seven avatars of sin that Ritsuka must overcome to escape, which must done in seven days otherwise they will die. However, Florence Nightingale, lost her original role as the avatar of pride for unknown reasons along with her memories, so the role was taken by Edmond Dantés instead.

History
Ritsuka suddenly find themselves inside a prison cell. They're welcome by a mysterious voice, and reveals no one can help them now. The source of the voice then appears, and kills the spirits trying to kill Ritsuka out of envy. He explains they're in the prison tower,, and introduces himself as Avenger. After exiting the prison cell, he tells Ritsuka to survive the ordeal if they wish to learn more. He reveals their soul has been imprisoned. He explains they'll need to pass the seven Halls of Judgement in order to escape. He also says neither their voice nor those of Chaldea can reach each other. He then reveals the current Château d'If isn't the real one, but something similiar to a Singularity that Solomon uses a hunting ground. Ritsuka and Avenger soon encounter Phantom of the Opera, the first of the seven lords, presenting the sin of envy. After Avenger kills him, Ritsuka find themselves back in their room in Chaldea. There Phantom explains the one killed in the prison wasn't him, but rather his ulimate ugliness. However before he can reveal more, Ritsuka is summoned back to the prison. Avenger explains Ritsuka's body is still in Chaldea, along with everyone else there. However, the flow of time and space differs between Chaldea and the prison, so seven days in the prison equates to one in Chaldea. Avenger also reveals they will always begin in the same prison cell bfore exiting. The pair then encounter a mysterious woman asking for help. She explains she suddenly found herself in the prison with no memories. Avenger decides to call her Mercédès after she recalls she was searching for something important. Taking Mercédès with them, the pair reach the second hall. There they encounter Fergus mac Róich, who represents the sin of lust. After Fergus is killed, Ritsuka temporarily returns to Chaldea. However, they're quickly summoned back, and continues to the next hall with Avenger and Mercédès.

Back in Chaldea, Ritsuka remains unresponsive. Meanwhile in the prison, Avenger reveals the connection between Ritsuka's body and soul is weakening. Leaving without Mercédès, the pair encounter the avatar of sloth, Gilles de Rais. After he is defeated, Gilles reveals to Ritsuka in Chaldea that was only a fragment of him.

Later, Avenger immediately has Ritsuka go to the fourth hall. There they meet Saber Gilles. He prepares to fight Avenger on his own when Jeanne d'Arc arrives. Avenger reveals she is the avatar of wrath, and that she entered the prison willingly. Ritsuka and Avenger then fight her and Gilles. Jeanne retreats, saying she'll stop Avenger's plans.

While Avenger scouts outside, Mercédès wonders she is an avatar of sin. Avenger then returns and immediately has Ritsuka go with him to the fifth hall. There they encounter the avatar of gluttony, Caligula. They then subsquently defeat him.

Later, Ritsuka and Avenger go to face off against the avatar of greed. At the sixth hall, they're confronted by Jeanne, who had been waiting for Avenger. She fights him alone until Amakusa Shirou Tokisada, the avatar of greed, arrives. The two saints then fight Avenger together. Nonetheless, they're both defeated, and disappear from the prison. Ritsuka and Avenger then return to their cell.

Ritsuka and Avenger find Mercédès isn't around. Regardless, they move on to the final hall, only to find it empty. As Avenger begins to tell a story to pass the time, Mercédès attacks him with the wraiths in the prison that admire. Meanwhile in Chaldea, she reveals she was meant to be the seventh lord before losing that role along with her memories. Back in the prison, she reveals Avenger's True Name is Edmond Dantès before disappearing. Edmond then attacks Ritsuka since only one can leave the prison, revealing himself to be the avatar of pride. After he is defeated, he reveals Solomon was the one who trapped Ritsuka in the prison. Solomon placed a curse called the Evil Eye on them when they stared into his eyes back in London. After Edmond disppears, Ritsuka returns to reality.

Participants
Servants

Fate/Accel Zero Order
Fate/Accel Zero Order refers to a an event, part of a collaboration between Fate/Grand Order and Fate/Zero, which occurred during the Human Order Incineration Incident. It involved a small Singularity that manifested in the coordinates of Singularity F in an alternate timeline ten years prior during the Fourth Holy Grail War.

Setting
The Singularity shares a similar background to the Fourth Holy Grail War of the original timeline but with significant differences. Firstly, Kiritsugu Emiya and Irisviel von Einzbern have never met each other nor was he hired by the Einzberns to serve as Artoria Pendragon's Master. Instead she become a proper Master in the war with Artoria as her Servant while he contracted with the World to become a Counter Guardian. So unlike the original Fourth Grail War, the Einzberns prove to be the superior faction. However, the Counter Force sensing that the Einzbern's victory will cause the activation of Angra Mainyu, summons Kiritsugu to stop the war before its completion.

History
Arriving in Fuyuki, Ritsuka, Mash, and El-Melloi II discuss the disaster that will come to the city with the Holy Grail War. El-Melloi II suddenly uses Qi Men Dun Jia to reveal the concealed Hundred-Faced Hassan. He knew she would investigate the rayshift location since she surveys the entire city. After Hundred-Faced is defeated, El-Melloi warns that she will be keep attacking them while surveying the city. Telling Ritsuka and Mash to defeat her other personas immediately on encounter, he and the others move onward.

At the wharf, El-Melloi II reveals All the World's Evils will activate if the require number of summoned Servants are sacrificed. He compares it to a bomb capable of destroying the world, and calls Singularity F the result of the ritual being completed. Mash asks who would make such ritual, to which he answers that was the result of a "man-made diaster". He theorizes that the Grail detected by Chaldea is different from Fuyuki's Greater Grail that had been corrupted by Angra Mainyu. Irisviel von Einzbern and Saber soon arrive like El-Melloi II predicted. Irisviel assumes the group to be participants of the war. Saber notes she no longer detects Lancer's presence, even though he invited them. El-Melloi II reveals Saber's True Name to be Artoria Pendragon and has the group fight her. After Artoria retreats, the group are confronted by Lancer, who was trapped by El-Melloi II's Qi Men Du Jia formation to prevent him from fighting Artoria. He reveals Lancer's True Name is Diarmuid Ua Duibhne, and tells him they aren't Kayneth El-Melloi Archibald's enemies. He tells Kayneth that they came to support him. He gives Reines El-Melloi Archisorte as his guarantor since he can't divulge his name now. Kayneth is convinced to leave the group alone when El-Melloi II sats he'll reveal more and Caster's current location.

After leaving the wharf, El-Melloi II reveals his plan to have at least three Servants withdraw from the battle to prevent the Grail from activating. The group will eliminate the Servants with whom agreement is impossible, such as Caster and Archer. El-Melloi II warns they will likely fight Hundred-Faced when confronting Archer since their Masters are allied. He then says they will have to convince Berserker's Master to join them since direct reasoning with Berserker is impossible. He warns that Berseker may go on an rampage regardless of his Master's order, and warns that his Master is unstable physically and mentally. Deciding to postpone convincing Berserker's Master, the group agree to focus on convincing Artoria, Diarmuid, and Rider with whom they have the best chance.

Later, Mash is prevented from establishing a summoning circle to get supplies from Chaldea due to the leyline being guarded by a spell placed by the Tohsakas. El-Melloi II decides that they must destroy the keystones that power the spell to take control of the leyline for themselves. Romani Archaman worries doing so will anger the Tohsakas, but El-Melloi II reveals they summoned Archer. He then leads the group to each keystone, which knows he the locations of thanks to Rin Tohsaka when she helped him dismantle the Greater Grail in his timeline. At one of the leyline points, the group by ambushed Sea Demons summoned by Caster in an alleyway.

After killing the Sea Demons, El-Melloi II negotiates with Kayneth at his apartment while keeping a telepathic line to the Ritsuka. Kayneth confronts him with the fact that the he was lying that he was acting on Reines' behalf. However, he decides to continue the meeting due to wanting know more of Caster's location from him. El-Melloi II convinces him that he is from the future by stating Kayneth's original intention to summon Iskandar instead of Diarmuid until the catalyst was stolen by Waver Velvet. He also reveals his knowledge that Kayneth's Fiancée, Sola-Ui Nuada-Re Sophia-Ri, to be the one providing Magical Energy to Diarmuid. He then tells him that he will be officially be in Reines' service four years from now. Later, he deceives him that Chaldea's technological achievements were all accomplished by the Archibald family, which were only made possible thanks to his leadeship and founding of Chaldea. After convincing Kayneth to join them, the group head to Caster's hideout in the sewers.

In the sewers, the group eventually confront Gilles de Rais. They defeat Gilles, but Ritsuka wonders where his Master is. El-Melloi II warns his Master is a murderer they must stop. After Kayneth goes to the Church to get an additional Command Spell, the group search for Gilles' Master. Further in, the group find the corpse of Gilles' Master. El-Melloi II suddenly detects a Servant and deploys Qi Men Dun Jia to trap them. The Servant is revealed to be a mysterious Assassin, who El-Melloi II believes to be connected to why 1994 Fuyuki became a Singularity. The group defeat him, but Iskandar and Waver charge in. Their destruction of El-Melloi II's formation allows Aassassin to escape. Waver wonders if El-Melloi II is either Caster or their Master, but El-Melloi II reveals he's a Pseudo-Servant to Waver's confusion. Iskandar tells him that El-Melloi II isn't the owner of the workshop they're currently in. He then tries to pick a fight with the group, but they retreat to his disappointment.

Later, Mash finally establishes the summoning circle, but the group is soon confronted by Artoria. She challenges them to a fair fight, though El-Melloi is unconvinced due to his knowledge of her serving as a decoy while Kiritsugu Emiya ambushes the enemy. As the group continue to fight Artoria, Mash defends Irisviel from Assassin's ambush. He tells Irisviel that he came to kill her because she is the Lesser Grail, believing her death is the fastest way to dismantle the Grail. Artoria then fight him to defend her, which prompt the group to aid her to prevent losing her. After Assassin retreats, Irisviel and Artoria are convinced the group aren't enemies.

The group go to Kayneth's apartment, where Kayneth reveals Berserker's Master has agreed to join them if they help him defeat Archer. El-Melloi II then convinces him that the Holy Grail War is an conspiracy by the Trambelios, the enemy of the Archibalds, to increase their influence in the Mage's Association while he's away. He continues that the Tohsakas confessed in colluding with the Trambelios to create a fake war, and lies that the other participants are decoys. Kayneth then gives Diarmuid to the group after using a Command Spell to stay in Fuyuki and win the war. Outside, Romani warns El-Melloi II that his actions in the Singularity will not change what happen in his timeline as it will disappear once it's resolved. Despite that though, the group continue with his plan and go to meet with Berserker's Master.

Meeting with Berserker's Master, Kariya Matou, El-Melloi discusses with him about defeating Archer. The plan is for Berserker, Lancelot to defeat Archer, Gilgamesh, during his discussion with Artoria and Iskandar at the nearby Einzbern Castle. Interrupting the meeting between the three kings, the group defeat Gilgamesh with Lancelot. The effort however causes Kariya to pass out, which makes Lancelot go out of control and attack Artoria. Not wanting to lose her and having no more use for Lancelot, the group fight him. However, before they can finish him off, Iskandar defends him. He explains he is joining Lancelot to fight El-Melloi II out of sheer dislike and suspicion. He calls El-Melloi II a threat greater than a mere enemy for trying to interrupt the war. He tells Artoria and Diarmuid that they'll be his enemies if they ally with El-Melloi II. Diarmuid prepares to fight him, but El-Melloi II warns they're only continues that El-Melloi is an outside who trying to interrupt the war, which makes him a greater threat than a mere enemy. He then tells Diarmuid and Artoria that they'll be considered if they ally with El-Melloi. Diarmuid prepares to fight Iskandar on Ritsuka's order, but El-Melloi warns they're only allowed to defeat four Servants. Iskandar then leaves, taking Kariya and Lancelot with him, vowing to fight the group once Lanelot recovers.

After Iskandar leaves, Assassin arrives to try to kill Irisviel again. El-Melloi II tells him their goals to end war align, even though their methods differ. He continues Irisviel is Artoria's proxy Master while serving as the Lesser Grail, but she denies being a proxy. El-Melloi II believes Artoria's true Master is Kiritsugu, but Artoria says Irisviel is her Master. Irisviel then shows her Command Spells to convince him she is a Master to his shock. After the group defeat Assassin in an ensuing fight, El-Melloi reveals him to be a Counter Guardian. He reveals the activation of the Greater Grail will destroy the world, and Fuyuki is the cause of the Singularity. Irisviel being both the Lesser Grail and a Master differs from his records, as that type of Master is meant to appear ten years later. Her being a Master with a powerful Servant meant certain victory for the Einzberns, which prompted the Counter Force to intervene. Assassin asks El-Mello II if the Counter Force intervened in the war he knew. El-Melloi II answers the chance was fifty-fifty during the fourth and fifth war. Romani then calls the Singularity a "what if" where Einzberns are the superior faction in the fourth war. Agreeing with him, El-Melloi concludes Irisviel's Magic Circuits are likely what Chaldea read as a Holy Grail, even calling her a psuedo Holy Grail. He then convinces Assassin to help them if it means not killing Irisviel.

Meanwhile, Iskandar captures Sakura Matou from the Matou Residence while burning the worms in the basement. He agrees to give her to Kariya in exchange for his right hand and Command Spells, which he concedes to. After serving his hand, Iskandar has Mithrenes take Kariya and Sakura to a hospital outside of Fuyuki before leaving. After he leaves, Zouken Matou finds his manor to be burning and a contract-less Lancelot. He then contracts with him to get revenge.

At the Greater Grail's cavern, El-Melloi II reveals his plan to safely dismantle the Grail. The original plan was to destroy directly, but that was abandoned since they failed to recruit Iskandar. Suddenly, El-Melloi II and Asssasin detect Hundred-Faced. After defeating her, the group proceed to the Grail's chamber, where they fight Iskandar. However, after Iskandar is defeated, El-Melloi II is severely wounded by Lancelot on Zouken's orders. Zouken wishes to witness the Grail's activation despite Irisviel calling it a failure. Wanting to defend the Grail, he commands Berserker to attack the group. However, with Berserker's defeat, the Grail is ready to be activated, and Zouken extracts magical energy from Irisviel to hasten its awakening. Suddenly someone resembling Irisviel emerges from the Grail designated Black Iri. After devouring Zouken, she goes to devour the rest, saying five Heroic Spirits aren't enough to fill her. Diarmuid and Artoria hold her off while the others escape.

Outside of the chamber, El-Melloi II uses his remaining strength to make Waver Zhuge Liang's new temporary vessel. The group then return to the chamber to help Diarmuid and Artoria fight Black Iri. After she is destroyed, Diarmuid and Artoria disappear since the Grail was destroyed. El-Melloi II announces the Grail detected by Chaldea is gone. He asks Irisviel what she will do now since she can't become the Grail any more. Mash asks her to return with them to Chaldea since their original goal was to retrieve the Grail. She accepts the offer, and El-Melloi helps Waver leave the cavern. Assassin and Irisviel realize they have a strange yet pleasant connection. He is satisfied he was able to protect something without sacrifice. After they thank each other, Irisviel rayshifts to Chaldea with the others.

Later, Assassin tells Angra Mainyu to come out of the Grail. After emerging, Angra Mainyu asks Assasin why he didn't warned the group of him since they only destroyed the vessel and not him, the contents. Assassin answers he didn't want to rely on others from another world to destroy him, whose curse solely belongs to his own world. Angra Mainyu criticizes him for continuing to be a Hero of Justice even after death. Assassin has no regrets for his chosen path though, saying they'll both curse and save the world respectively. Before fighting him, Angra MAainyu asks him for his name, to which he answers Kiritsugu Emiya.

Participants
Servants

Rashoumon: The Devilish Capital of Restless Spirits and Drunken Dreams
Rashoumon: The Devilish Capital of Restless Spirits and Drunken Dreams (鬼哭酔夢魔京 羅生門) refers to an event which occurred during the Human Order Incineration Incident. It involved a distortion which would have become a Singularity if left unchecked, located in, during the.

Setting
After Shuten-douji and Ibaraki-douji woke up in the distortion, they found the Holy Grail in front of them filled with wine. After they drank it, the wine soon vaporized and spread throughout Kyoto causing its citizens to become drunk. Meanwhile, the wine grants the wishes of Shuten and Ibaraki's heart, but their wishes are twisted by it. Shuten wished to have fun with Sakata Kintoki again, causing him to be summoned into the distortion. Ibaraki wished to go on a rampage with Shuten, but it was twisted into going on a rampage with her power. As a result of the wish, Shuten's power was absorbed into Ibaraki, eventually causing her to become unconscious. Then, in a panic, Ibaraki captures her and shut herself behind a large gate in Kyoto

History
Ritsuka Fujimaru and Mash Kyrielight When they notice a strange aroma. Romani Archaman informs they're possibly in the Heian Era, but the location isn't known. Sakata Kintoki then appears, and joins the pair. He reveals they're in Kyoto, and Romani reveals the aroma was wine. He directs the group to the source of the abnormality, and figures Kintoki was forcibly summoned into the distortion.

The group travel through a residential district on their way to the abnormality's source. They find Kyoto is covered an alcoholic mist, which affects even Mash. The city is also empty, other than drunk citizens and corpses on the street. They soon arrive at a large gate, where Kintoki realizes the mist and chaos in Kyoto were caused by an Oni. Ibaraki-douji then appears, and shows an unconscious Shuten-douji. She intends to sacrifice her, but Kintoki believes Shuten will eat her from the inside. In response, Ibaraki summons the Great Grudge of Rashoumon, and the attacks the group. She and Kintoki are evenly matched, so she retreats beyond the gate. Left fatigued by the fight, the group leave to recover before trying again tomorrow.

After another failed attempt to defeat Ibaraki, the group retreat to the field they first arrived in. There they report their progress to Romani. Romani reveals the alcoholic mist will not disappear until its source is destroyed. He then tells the group his plan to do so. report their progress to Romani. Asked by him, Ritsuka reveals that Mash is still drunk from before, though she doesn't seem affected during battle. Romani states the alcohol in the air will not disappear until the source is destroyed, then he tells the group a plan he thought up.

The next day, after fighting Ibarki again, Mash realizes they don't need to defeat her to solve the distortion. They only to need to destroy the source of her power beyond the gate first. However, climbing over the wall is out of the question due to a thick and sinister fog-like thing above the gate and wall. On Ritsuka's suggestion, the group searchs for any detour that can get them past the gate. They eventually find a enormous cliff on the Kyoto's west end. There they see Japan and its islands have either sunken, or its topography is different from the regular Japan. They also notice an island in the distant. Unable to find a detour, the group realize they have to continue fighting Ibaraki.

After yet another failed attempt, the group nearly defeat Ibaraki. However, she unleashes her Noble Phantasm, and escapes when it's blocked. With Ibaraki near defeat, the group prepare for the decisive battle.

The next day, Kintoki defeats Ibarki with Golden Spark. He then realizes the reason she captured Shuten, and gave alcohol to the humans, was because there was too much for her. After Ibaraki retreats, Shuten finally wakes up. The group try to fight her when she blocks Kintoki's axe at the last second. She deduces her weakened state is due to Ibaraki absorbing her power. She then takes the group to the source of the abnormality, the Holy Grail. She explains she and Ibaraki found the Grail already filled with wine when they woke up. They both drank the wine, but Shuten's power began to be siphoned into Ibaraki after she fell into a sleep from too much drinking. Shuten reveals the wine grants wishes through the Grail's power, though those wishes get twisted first. The wine soon vaporized and spread throughout Kyoto, causing its citizens to become drunk from the mist. Ibaraki's wish was to rampage with Shuten, but it was twisted into rampaging with her power. After Kintoki destroys the Grail, Mash realizes he was summoned because Shuten wish to have fun with him again. She wonders who placed the Grail before the oni and filled it with wine. Kintoki figures something else will happen if the mastermind is still around before disappearing. Ritsuka and Mash then return to Chaldea.

Participants
Servants

Onigashima: The Great Tale of Demons
Onigashima: The Great Tale of Demons refers to an event which occurred during the Human Order Incineration Incident. It involved a distortion which would have become a Singularity if left unchecked, located in the fictional island of ,

Setting
Occurring in the same distortion of Rashoumon, it was constructed by Minamoto-no-Raikou when she turned into her oni self, Ushi Gozen, as a result of absorbing too much divine energy. After creating the distortion with the Authority inherited from her ancestor, Gozu Tennou, Ushi decided to construct a place where Sakata Kintoki can be safe from the scorn of the human world. She then drew the island Onigashima into existence and created its oni residences in the same matter. These oni were the same as the ones she drew for Kintoki during his childhood. Not all the oni were drawn well though with the better ones being called Onimaru and the others being compared to scribbles. While the Onimaru served as gatekeepers, the lesser oni were used to further the island's construction along with humans they enslaved.

History
Arriving in the distortion, Ritsuka and Mash are told by Romani Archaman that they're on the island they saw in Kyoto. Unfamiliar with Japan's landscape, Mash asks Ushiwakamaru for her assessment. She is shocked to see the shape of the island when the group are attacked by an Oni. After killing it, they realize the island is, the legendary island of the Oni. Romani is unable to pinpoint the island's temporal coordinates, similar to happened in Kyoto. He speculates it was created as the abnormality when Ushiwakamaru says the island didn't exist in her lifetime. He orders the group to investigate who created Onigashima, and tells them the Singularity response is at the island's peak. Ushiwakamaru then reports back to Ritsuka that she found a Servant lying unconscious on the beach. The group slays the oni surrounding him, and he regains consciousness. Dispatching an oni with a kunai, he introduces himself as Fuuma Kotarou. He then helps the group kill more oni. However, they're soon surrounded, so Kotarou decides to use his Noble Phantasm to create a diversion. Ushiwakamaru warns though that even with a diversion, they lack the strength to breakthrough the oni. Suddenly though, Sakata Kintoki jumps from a nearby cliff on a motorcycle. He then helps slay the remaining oni.

Proceeding to a mountain pass, Kotarou reveals he was summoned rather recently. He planned to observe and study the oni's behavior in the hopes of unlocking his sealed Noble Phantasm that transforms him into an oni. However, he was overwhelmed as the oni kept calling for reinforcements. He and Kintoki deciide to help solve the mystery behind the island. He then senses an oni scouting party that the group proceed to kill. While Kotarou and Kintoki do some recon, the others check the area. Looking out from a cliff, Mash and Ushiwakamaru spot a labor camp with human slaves run by oni. Kotarou returns and reports there are more forced labor camps. As liberating every camp is unrealistic, he suggests eliminating the mastermind. He reports he found a way to the island's peak, but it is blocked by three locked gates. Each one requires keys from the three great oni that serve as the gate keepers. Kotarou also reports there are ones command the lesser one, and they hired a terrifying guard. The group then get worried Kintoki hasn't returned yet. Suddenly Romani and Kotarou detect something approaching, so the group hide and observe. They see higher-ranked oni leaving the camp. Given their ability to speak, Mash wonders if they can get information from them when Ushiwakamaru runs off towards them. However, the group spot a femalr Servant killing the oni and go to help her. After the oni are slain, the Servant leaves with the hope they'll cross paths again. Kintoki then returns and reports he found something akin to a human settlement. The group then head there to get information.

The group arrive at the first gate. There they encounter Sasaki Kojirou, who is the hired guard Kotarou reported about. They fight him and the first great oni Kazakoemaru, who is heralded as the embodiement of speed. After defeating them, the group unlock and pass the first gate.

The group soon arrive in the oni's human slave settlement. There they encounter Musashibou Benkei, who tell them there is another settlement higher up. He was actually looking for the group when he ended up in the village. He then helps them slaying an oni patrol. Afterwards, they leave the village joined by Benkei.

Eventually the group encounter a checkpoint. Ushiwakamaru asks Benkei how he got pass it, but he confesses he fell off the cliff to the previous settlement. Mash notes how cliffs are far too steep to climb even for a Heroic Spirit, and worse they would be spotted by oni. Seeing the path is too narrow and steep to go around the checkpoint, the group decide to breakthrough. Kotarou disguises himself as a oni, and takes the others as human slaves. He tells the oni guard they were requested by the great oni. The oni doubts Ushiwakamaru can do any work based on her small frame and shameless outfit. Benkei tells him she is a seductress, and knocks her out to "elimate" her as a threat to the oni. He then drags her unconscious body past the confused oni guard. Once inside the checkpoint, Kotarou signals Kintoki, who sends the oni into disarray. After slaying the oni, the group get the past the checkpoint.

Continuing on the pass, Benkei suggests they gather information at a tea house in the settlement up ahead that he visited before. However, Ushiwakamaru gets drunk from the tea he offered, and takes a jizo statue she mistakes as her brother. She then fights oni to offer their heads to the statue, and the others go to help her. Unfortunately the statue's head falls off, so Ushiwakamaru chases it into a cesspit. However, she abandons the body, claiming her brother would never go to the toilet. Afterwards, the group arrive at the second gate where they encounter Tamamo-no-Mae. They fight her and the second great oni Wazahamimaru, who is called the embodiment of technique. After they're defeated, the group unlock and pass the second gate.

Arriving in the settlement where the teahouse Benkei told them of is, the group encounter Shuten-douji and Ibaraki-douji. Both of them work at the teahouse, inviting and welcoming both humans and oni. Kotarou acciuses them of constructing Onigashima after Romani tells him of their previous encounter. Shuten denies their involvement in the island's construction, as they planned to destroy it out of anger at its construction. However, they decided to hold a banquet after drinking wine that tasted familiar when poured into odd cup they found in the island's treasure room. Shuten reveals a spell had been cast on all the oni and humans from their current location down. He reveals the cup to be the same type of Grail from Rashomon, though less powerful. It isn't strong enough to produce the alcoholic mist, but its effect will be felt when its wine is drunk. Shuten offers she and Ibaraki and the group join forces to find the mastermind behind Rashomon and Onigashima. However, the group fight the oni girls when Kintoki refuses the offer. Ushiwakamaru is left fatigued by her fight with Ibaraki, who unleashes her Noble Phantasm. However, Benkei uses his body to block it, and Ushiwakamaru disperses the flames with Kikenjō - Icicle Cutting after jumping from his shoulders. As Ibaraki struggles against the group, Shuten offers her the Grail's wine, which will grant her the power she had in Rashomon. However, the Servant from before arrives, and Kintoki reveals she is Minamoto no Raikou. After forcing Shuten and Ibaraki to retreat, Raikou chases after them while the group continue their journey up the mountain.

Arriving at the third final gate, the group encounter Kiyohime there. She then calls forth Gorikimaru, who is called the embodiment of strength, and fights them. After they're defeated, the group unlock and pass the final gate. At the summit, they find Raikou standing before the Grail. Kintoki warns the others about getting closer, as he recognizes she isn't Raikou. He reveals her to be Ushi Gozen, Raikou's oni self that she personally sealed away. Ushi reveals she acquired the Grail and constructed Onigashima using the Authority inherited from Gozu Tennou to create a kingdom for oni. Raikou constructed the island out of a bizarre kindness for those scorned by human society due to their strange appearance. However, she slain the oni out of hatred despite them being her workforce. Ushi reveals she created the oni by drawing them, and they'll be destroyed once the island is complete. Revealing she mortally wounded Shuten and slew Ibaraki a moment ago, she tries to convince Kintoki to join her as she constructed the island for him. She also reveals that she is responsible for the Rashoumon incident to make everyone kill each other by getting them intoxicated with the Grail's wine. Kintoki refuses to join her and fights her with the others. The group struggle against her immense strength though. She prepares to finish them all off when Shuten ambushes her only to be slain by her. Using the opening Shuten created, Kintoki defeats Ushi with Golden Spark. However, he noticed she jumped into the lightning to knock herself out. He reveals Ushi manifested when Raikou builds up too much Divine Energy inside herself. Raikou then wakes up, having no recollection of being Ushi. Despite that though, she recognizes the incident as her fault, and apologizes for her behavior. She and Kotarou then disappear due to their oni heritage. The group then return to Chaldea.

Participants
Servants

Prisma Causeway: A Magical Girl's Travelogue
Prisma Causeway: A Magical Girl's Travelogue refers to an event, part of a collaboration between Fate/Grand Order and Fate/kaleid liner PRISMA☆ILLYA 3rei!!, which occurred during the Human Order Incineration Incident. It involved a Reality Marble where Magical Girls from different parallel worlds waged war against each other.

Setting
The first Magical Girl was a demon who was raised in the human world, deciding to save people despite her origins. She became best friends with a girl named Mila, but was forced to kill her when Mila became the first corrupt Magical Girl. Eventually, forgotten by humans and her fellow demons, she would eventually pass into legend as the First Lady, the first Magical Girl. After she died, her regret over killing Milla caused a Reality Marble to begin to manifest. However, the First Lady still wished to help people through the magic of Magical Girls, which attracted Echoes, the spirits of failed Magical Girls from various parallel worlds. Furthermore, their despair and their obsession to remain as Magical Girls became a flow of magical energy. Using this flow, the First Lady formed and sustained the Reality Marble, and gave the Echoes temporary bodies and magical energy. Instigated by the First Lady, the Magical Girls killed each other as they each tried to establish their own kingdoms based on their differing ideals. Only a few survived this war to prove strong enough to create their own the kingdoms, and were each given a jewel that granted them absolute authority in their respective kingdoms. The survivors included: Medb, Nursery Rhyme, Medea Lily, and Helena Blavatsky, each of whom founded their own kingdoms. Medb founded the Land of Snow and Honey, becoming the strongest Magical Girl. Nursery Rhyme founded the Land of Sweets, where she became playmates with the Demon God Glasya Labolas after tiring of her candy citizens. Medea founded the Land of Dragons and Sea, where she isolated herself due to her despair of killing other Magical Girls. Helena founded the Land of Dead Bookshelves, serving as the gravekeeper for the Echoes. Eventually, Medb became the First Lady's servant and is made to gather more Magical Girls for her plan. However, none of them are found to be satisfactory, so the First Lady searches for a real Magical Girl.

Meanwhile, Mila existing in the Reality Marble as an Echo, opens a leyline to the outside, and summons Chloe von Einzbern in an effort to help her friend. Chloe witnessed the battles between Magical Girls while hiding her presence from them. Unfortunately, this act eventually causes her to be drained of magical energy to point of disappearing. It is that point when she met the First Lady through a familar, and becomes her vessel. The First Lady found a way to peer into parallel worlds in her search for a real Magical Girl, and eventually discovered Miyu Edelfelt to be perfect for her plan. She then confronted Miyu and Illyasviel von Einzbern as they were travelling to the Mirror World, and summoned them into the Reality Marble. Seperated from Illya, Miyu is imprisoned in the First Lady's castle, where she is restrained and tortured by the Anti-Magical Girl Mystic Code, Voile de Deuil. Meanwhile, Medb decided to rebel against the First Lady, and began to build her army of Magical Girls. Then, using her magical energy greater than the First Lady at the time, she opened a leyline to Chaldea, and inadvertently summoned Mash Kyrielight and Ritsuka Fujimaru as the latter's familiar into the Reality Marble.

History
Ritsuka and Mash Kyrielight awaken to find themselves in an unknown location. They decide to explore when something bumps into Mash. The strange object asks for their help, and introduces itself as Magical Ruby. Suddenly, the trio are attacked by barrage of spells from the air by Medb. Ruby reconginze her as the one who defeated its master earlier. Ritsuka and Mash find her different from her usual self. Medb introduces herself as the Magical Girl of Honey and Geis, Connacht★Medb, the queen who rules the Land of Snow and Honey. She demands Ritsuka and Mash hand over Ruby as she summons monsters. Ruby refuses to let her be its master, prompting Ritsuka and Mash to fight the monsters. After her monsters are slain, Medb realizes her monsters aren't at full strength in the neutral zone. Mash tries to stop her from summoning more, but her attack proves to weak for some reason. As Mash's attacks are continuously blocked by Mebdb, Ritsuka tells her to retreat, but she refuses to give up. A tired girl then appears, who Ruby recognizes as its master. Impressed she survived being hit by her chariot, Medb asks for her name, and invites her into her army. The girl introduces herself as Illyasviel von Einzbern. She refusees Medb's invitation, and demands she return her friend, Miyu Edelfelt. She then transforms into a Magical Girl with Ruby. Medb tries to kill her, but Illya easily overwhelm her. However, her next attack meant to finish Medb off is blocked by Mini Cú with his own body. After they leave, Illya's transformation suddenly wears off due to the Magical Energy feed from Ruby not stabilizing for some reason. Illya then explains that while traveling from her world to the "Mirror World", she and her friends encountered an unknown force that placed them in her current location. Miyu was immediately kidnapped by a magical creature, and Illya was quickly attacked by Medb afterwards. Mash believes Miyu's kidnapping is connected to her and Illya sharing the same Magecraft. When Ruby calls her a Magical Girl, Ritsuka and Mash are suddenly contacted by Romani Archaman, and reveals they're inside a Reality Marble. .

Ritsuka asks Romani if he can get them back to Chaldea, which he says is fine along as Mash is with them. Mash asks him to give Illya temporarily refuge in Chaldea. He refuses though as only her, Ritsuka, and Ritsuka's Servants can rayshift back. Chaldea cannot intervene too much with other eras, but Mash reveals Illya is from a parallel world. There would no interference with an era since events are inside a reality marble. Illya however points out she needs to save Miyu, thus she cannot take refuge in Chaldea. Leonardo da Vinci then contacts the group. She theorizes the Reality Marble is preventing Mash from using her full strength as she doesn't fully meet its conditions. Romani orders Ritsuka and Mash to return to Chaldea, but Mash stays to protect Illya.

Upon returning to Chaldea, Ritsuka is shown a video by Romani that was recorded when they and Mash suddenly rayshifted into the Reality Marble. The video shows Ritsuka taking a nap in the command room, with Mash trying to wake them up. It also shows Mash suddenly shifting back and forth between her regular and Servant form. Romani then tells them Da Vinci wants to give them something in her lab. After picking up the aforementioned item from da Vinci, Ritsuka returns to the Reality Marble.

However, Ritsuka finds Mash and Illya to be missing. Ruby tells them that the girls were abducted by the residents of the Land of Sweets. Meanwhile, in the Land of Sweets, Mash and Illya are begged by its residents to stay with them forever. When Ritsuka and Ruby arrive, Mash explains she tried asking the people for information before being abducted by them. The group then fight the canylanders. Most of the candylanders flee upon learning Illya is a Magical Girl, which she takes advantage to get information from a candylander. Learning the Queen of the Land of Sweets may know more, the group head for her Candy Castle.

While heading towards the castle, the group are confronted by what appears to be Tamamo Cat. However after defeating her, they discover her to be a Mystic Code copying Cat's form before breaking under the strain. Arriving in Candy Castle, the group are greeted by the Queen of the Land of Sweets, Nursery Rhyme. Romani confirms that she isn't the owner of the Reality Marble. Illya asks her if she or any of her citizens know anything about Miyu. Nursery Rhyme promises to tell what she knows in exchange for playing with her. Illya replies they can play later, but Nursery Rhyme refuses as her only playmate is a black sheep. However upon summoning it, her black sheep turns out to be the Demon God Glasya Labolas. Before fighting the group, she reveals the the Land of Sweets's citizens were her previous playmate but they broke too easily, and they were once human. After she's defeated, Nursery Rhyme tells Illya to give up on finding Miyu upon hearing she's a Magical Girl. She explains the Reality Marble is a world where Magical Girls gather, who'll disappear when they stop playing as its the rule. She, like Medb, is one of the Magical Girls who were able to create their own kingdoms. As thanks for playing with her and Glasya Labolas, Nursery Rhyme gives the group a jewel, which she says may help finding Miyu. After leaving the castle, Mash realizes her attack against Nursery Rhyme were more effective than against Medb, which Ruby attributes to her Magical Girl power increasing. Suddenly, the jewel begins to glow, and points the group in the direction of the Land of Dragons and Sea.

As the group sail through the ocean, Romani asks Illya how she plans to return to her original world. Illya doesn't know, as Ruby explains neither Illya nor Miyu can use spells advanced to transfer between parallel worlds. They lack the skill and knowledge to precisely select a location to return to. Romani states their world and Illya's world being connected magically is a dangerous situation. After slaying a swarm of wyverns, the group notices a galley charging towards their ship. They defeat the Dragon Tooth Warriors that boarded their ship when they're greeted by Medea Lily. She proclaims herself to be the Magical Girl of Love and Healing, Medical★Medea. She demands to know which kingdom's Magical Girl the group killed to obtain her jewel. Illya explains it was given to her by Nursery Rhyme without them trying to kill each other. Realizing they've come to take her jewel, Medea invites the group to her castle.

Inside her castle, Medea is convinced by Jason to cease her sneak attack on Illya upon recognizing her good nature. Medea offers to never interfere with the group's affairs in exchange for them never interfering with her kingdom. She refuses to hand over her jewel, which she calls the Tomoi Stone, as it supports her kingdom, and grants her power. She reveals the Reality Marble once had many Magical Girls, but they warred against each other trying to establish their own kingdoms. As she continued fighting the other Magical Girls, her jewel grew in weight and shone brighter, which serves as the catalyst of her kingdom. She reveals the Neutral Zone is a buffer zone where a Magical Girl cannot receive the blessings of her power. Equating the loss of her jewel to her own death, Medea demands the group leave her kingdom. She tells Illya to use her jewel to create a kingdom filled with friends. Illya refuses to do so as she only wants to get Miyu back and return to her world with her. However, Medea reveals Magical Girls cannot leave the Reality Marble, and believes Illya will use the jewel's power in the end. She also reveals Nursery Rhyme disappeared after giving her jewel as they're what keep Magical Girls alive. Illya refuses to give up though, which makes Medea finally snap and fight the group. She refuses to be defeated though, and prepares to transform into her adult self to Mini Jason's dismay. Illya stops her though, saying she'll finding a way to save Miyu without Medea's jewel. She also believes Medea created her kingdom to fight for something she holds dear to her. But Jason reveals Medea created her kingdom due to being indebted to him, and she's been protecting her jewel out of fear of other Magical Girls. She isolates herself in her kingdom to stop herself from becoming a witch at Jason's advisement. Jason then gives Medea's jewel to Illya, not wanting Medea to become a witch. Medea accepts the outcome, but remains silent on the subjects of Magical Girls fighting. Returning to the ship, Illya realizes they need to find Reality Marble's owner to get a clue on Miyu's whereabouts.

Following the light of the jewels, the group arrive in the Land of Dead Bookshelves. Mash notices a large black wall that Romani says prevents him from reading anything beyond it to his concern. Suddenly a ghost suddenly appears before them, but they decide not to fight it since it's alone and seems passive. After the ghost departs for the black wall, the group continue onto the center of the ruinous land. Concerned the jewels' light stopped leading them, Illya decides to transform and get an overview look of the area. While that happens, Ritsuka tells Mash out the video Romani showed them. Suddenly, hordes of ghosts come through the walls of the buildings. Seeing they're now aggressive, Mash transforms into a Servant form, and helps Illya fight them off. Unfortunately, the ghosts prove too numerous and strong for the two girls. Helena Blavatsky then comes out of a building, curious that a Magical Girl would come to a land drained of its Magical Energy. Illya asks if she is the Land of Dead Bookshelves's magical girl, to which Helena responds she is one of them. Apologizing for the ghosts' behavior, Helena reveals the land to be the graveyard of Magical Girls, and the ghosts to be those of Magical Girls. Recognizing Romani's communications as a leyline directly linked to a parallel world, Helena realizes "she" found a way to the outside world. She tells the group to come to her library so she may continue talking without danger.

Inside the library, the group is introduced to Helena's partner, Mini Edison who hasn't talked for a long time. Romani tells Ritsuka and Mash every book in the library is a grimoire, which Helena reveals them to be once Magical Girls. The ghosts of Magical Girls are called Echoes, who normally sleep as grimoires. However, Helena is unsure why the Echoes outside attacked the group, and they don't attack her as her role is to serve guests symbolized by her jewel. When Ritsuka asks if she is the Reality Marble's owner, Helena reveals it was created by a Magical Girl named First Lady as told to her by the Echoes. She continues First Lady is in the center of the world beyond the black wall, which cannot be destroyed nor perceived beyond by any magic. Curious why Illya is so fixated on Medb, Helena hears from her that Medb kidnapped Miyu. She wonders if First Lady had an effect of Medb who was previously only interested in the jewels. When Romani asks of her knowledge of parallel worlds, she reveals the Magical Girls in this world were once girls from parallel worlds, who couldn't become Magical Girls anymore in their own. Thus, the girls traveled to the Reality World to continue being Magical Girls. Mash then asks if she was summoned into the world as a Magical Girl, which Helena states to be fact as Ritsuka serves as Mash's familiar. She then gives her jewel to the group, unconcerned the Echoes will attack her without it. She tells Illya that wasn't Medb who kidnapped Miyu, but instead the First Lady was the culprit, who disguised herself as one of Medb's familiar. Illya thanks Helena for the information, but she still refuses to take the jewel. However, Helena reveals all of the jewels are needed to bypass the black wall to reach the First Lady as they're the crystallized emotions that grant wishes. She warns though the First Lady is likely gathering the jewels to use them to escape to the outside world. Realizing the First Lady made the Magical Girls fight each other to get their jewels, Illya vows to stop her. Helena warns however that task is impossible as the First Lady's power in the Reality Marble is absolute. Illya however refuses to let Helena give up though, which causes the grimoires to shake from frustration of being unable to escape their fate. Helena demands Illya to take her jewel under threat of death, so she can finally disappear. However, Illya responds by transforming into her Magical Girl form, and fights Helena who believes Illya's wish to save her and Miyu to be hollow fantasy. After she's defeated, Helena accepts Ritsuka's offer to join their group.

Returning to the Neutral Zone, Mash is asked by Illya to return to the Land of Sweets to check on Nursery Rhyme. Helena states how Medb became the strongest Magical Girl since belief in onself is the source of a Magical Girl's power. Because of that, Medb was able to maintain self unlike the other Magical Girls. Helena then speaks of a time she had traveled with Medb before the latter became obsessed with her lust for control. She also reveals Medb is forming a rebellion against the First Lady when Illya mentions Medb wanting her in her army. Suddenly, Medb's monsters appear, and the group fight them. After defeating the monsters, Ritsuka and Mash are unable to contact Ritsuka, fearing they won't be unable to return to Chaldea. Fortunately, Romani reestablishes with them, but he reveals Chaldea was attacked by hostiles using its leyline connection. Servants already present at Chaldea were able to repel the assault albeit barely. Romani asks Ritsuka and Mash to immediately return to Chaldea, but knows they won't easily leave Illya alone. He decides to cut the connection with Ritsuka and Mash to prevent any effects from their side. He gives them five minutes to make a decision before contacting them again. Suddenly, it starts to snow, which Helena sees as sign of Medb attacking the surrounding lands. Ruby tells Mash to return to her regular form as her power is now solely dependent on Ritsuka's magical energy since the connect with Chaldea is cut. Ritsuka decides they need to pinpoint the cause of the assault on Chaldea, which Helena agrees with. After the group decide to stay to help Illya, Ruby has Illya teach Mash how to recharge her magical energy through kissing. Romani then reestablishes contact with them to hear Ritsuka and Mash's decision.

After hearing Ritsuka and Mash's decision to stay behind, Romani cuts the connection for the time being. The group then travel to a snowy field that was once the Land of Sweets, which was the result of becoming part of the Land of Snow and Honey as Mini Cu reveals. Ritsuka asks him if he and Medb were ones who sent the hostiles into Chaldea. Mini Cu realizes Medb no longer needs to steal the First Lady's power if that is the case. The group then fight monsters summoned by Mini Cu despite Mash being weakened in Medb's territory. After the group slays his monsters, Mini Cu prepares to unleash his Noble Phantasm, Gentle Bite Coinchenn on Illya despite knowing Medb wants her in her army. Mash protects Illya from the Noble Phantasm when Magical Sapphire suddenly appears. Ruby tells Sapphire to make a temporary contract with Mash, which Sapphire agrees since Mash is Illya's ally. After Sapphire contacts with Mash, Mini Cu retreats as Helena tells him to tell Medb Illya has two jewels, which he already knew. Sapphire then plays a message from Miyu revealing she is a prisoner in the First Lady's castle beyond the black wall. Miyu reveals the First Lady had lured Magical Girls into the Reality Marble, having found technology capable of interfering with parallel universes. Despite not knowing what the First Lady from her, Miyu knows she needs to be stopped. She warns though that Illya shouldn't go to the castle, saying to send someone else instead. The message then cuts as a patrolling familiar nears, and Miyu sends Sapphire to deliver the message. Observing that Miyu's transformation hasn't reverted despite her distance from Sapphire, Ruby realizes the First Lady has special powers over Magical Girls. Sapphire says Miyu may have realized something about the First Lady's true identity as to why she didn't want Illya to come. Helena also doesn't know the First Lady's true identity, only hearing that she is the first Magical Girl.

The group travel to Medb's castle to confront her, but Helena decides to stay behind as she doesn't want to see anymore Magical Girls fall. Ritsuka, Mash, and Illya then enter the castle after Helena gives her jewel to Illya. Inside the throne room, the group confront Medb who tells Mash to forget her world, and join her instead. Medb calls the group arrogant for believing they can save the world themselves, saying they'll never rule their own fate. She calls the other Magical Girls unworthy of her army, only wanting Illya to join her. Medb then fails to trick Illya into believing Ritsuka and Mash are secretly trying to take over her world. She decides to help Illya save Miyu in exchange for them joining her, saying they'll make Ritsuka and Mash into their slaves. Mini Cu tells her to kill the pair instead, but she decides not to listen to him. Medb then reveals she was the First Lady's servant to grant the First Lady's wish to leave this world, which lead to the demise of many Magical Girls. She decides to take Illya for herself before the First Lady, but Ritsuka realizes she is fighting against despair. Illya refuses to believe that however as Medb's attack on her and Miyu made it possible for Miyu to be kidnapped, and states Medb is also trying to invade Chaldea. Ritsuka says the First Lady is at fault not Medb, which greatly enrages the latter. Mini Cu launches his Noble Phantasm at Ritsuka, but it's blocked by Mash and Illya. Reinvigorated by Mini Cu, Medb fights the group. . After she is defeated, Mini Cu tells Medb that her sympathy is way she lost, though she denies it. However she does reveal she made her army for those Magical Girls who had no where left to go. This makes Illya realizes Medb considered the Magical Girls who disappeared as comrades, which makes Medb's heart to finally break. As a result her castle begins to collapse, and Ritsuka and Illya plead with Medb to come with them. However, Mini Cu tells them that's impossible as Medb can no longer bare the strain of forcibly interfering with parallel worlds. The group then escaping the collapsing castle, leaving Medb and Mini Cu to disappear together. Outside, Medb's jewel appears in Mash's hand, and Illya returns to Helena's jewel returns to her. With all four jewels, the group can now bypass the black wall and enter the First Lady's kingdom when the jewels suddenly glow brighter.

Returning to the Neutral Zone, the group watch as the black wall disappears. Illya, Ruby, and Sapphire fly up to get overview of the First Lady's kindgom. Sapphire realizes the castle changed with the black wall disappeared. Helena senses all of the world's magical energy is gathering to the First Lady's location, wondering if the First Lady found a vessel capable of containing that much magical energy. Romani then contacts the group, telling them they'll be given Chaldea's full support. Da Vinci calls the Reality Marble a dumping ground for failed Magical Girls, who she considers dangerous normally as they possess overwhelming magical energy able to use magecraft intuitively. However, the despair and obsession of those Magical Girls who failed became a flow of unformed magical energy. This flow of magical energy eventually became a stagnant pool, with the First Lady becoming its locus, and the Reality Marble forming mostly on its own. The group realize everything will return to normal if they defeat the First Lady when Illya warns them a large incoming group of the First Lady's familiar. . Though overwhelmed by the sheer number of familiars at first, the group are able to breakthrough and enter the First Lady's kingdom.

As the group head closer to the First Lady's castle, Helena notices the familiars shifting form, becoming stronger. Mash attributes this the First Lady reacting to their presence in order to prevent their approach. Ritsuka wonders if the First Lady is trying to hide something, to which Helena guesses it has something do with the jewels. Mash wonders if the First Lady deactivated the black wall instead of the jewels. She wonders further if the First Lady intentionally made the Magical Girls fight each other from her kingdom. Helena calls the First Lady's actions contradictory, though the group ascertain her motives until they confront her. Suddenly the group are ambushed by a large number of enemies, and Ritsuka tells Illya to go ahead. However, Illya decides to stay and hold the enemy while the others go to the castle, but Sapphires says she won't make to Miyu in that case. As the group fight the large enemy force, Helena destroy a number of them herself, and tells the others to go on ahead to the First Lady's castle. After the others leave, Helena laments that she forgot to tell them they need the jewels to return to their original world. Though she won't give them her jewel, she is confident they can return home if Illya and Miyu have two jewels. As Helena realizes the true power of the jewels, like Medb did accidentally, Mini Edison appears to fight with her.

Inside the castle, the group head to the First Lady's throne room where they see a girl on the throne. Illya recognizes her as Chloe von Einzbern, whose disappointed that Illya made it the throne room. Chloe reveals that she and Miyu have been in the world for a very long time, though she been in it since the beginning. The group find Miyu restrained by lace ribbons, which a part of transforms into hostile familiar when Mash tries to check her condition. Chloe calls it a defensive reaction of the Voile de Deuil, an Anti-Magical Girl Mystic Code. She reveals that she followed Illya and Miyu into the Mirror World unnoticed, which frustrated her to a degree. She ended jumping into the Reality Marble, but ended being trapped alone long before Illya and Miyu arrived. Chloe had witnessed the various Magical Girls fight each as she hide her presence from them, but her magical energy drained to the point of her disappearing. That was when she met the First Lady through her familiar. She also confesses she hoped Rin Tohsaka and Luviagelita Edelfelt would saver her, but they didn't notice her disappearance in the first place. However, Chloe calls her appearance in the Reality Marble an inevitability as the First Lady turned her against Illya by calling her an accessory to Illya. Illya tries to tell her that's untrue, but Chloe projects a weapon in response and fights Illya. However, Chloe's shared pain with Illya puts her at a disadvantage when she reveals herself to be the First Lady's vessel. Unsure if it was the First Lady's idea to abduct Miyu, Chloe's body is completely overtaken by the First Lady, who promised to wait until after Chloe's duel with Illya. As she introduces herself, the First Lady reveals she was born in the Demon World, but raised in the human world. Hiding her identity, she fought for the people, but she lost her homeland and was forgotten by humans and her fellows demons as a result. Yet despite that, she doesn't hate them as her only desire is to keeping granting girl's wishes. Her feelings of wanting to spread the Magical Girls's magic of love and hope throughout the world attracted Echoes to the Reality Marble. The First Lady reveals she is an Echo as well, having needed an invisible presence to form and sustain the Reality Marble. She gave the Echoes temporary bodies and magical energy to create their kingdoms, but they couldn't make her wish come true. She needed to a real Magical Girl to accomplish that, which is when she met Chloe and made her into her vessel. Using Miyu's power, the First Lady will give the Echoes new incarnations to spread them across parallel worlds as Magical Girls to save people and defeat real enemies. Not allowing interference in her plan, she reveals she'll soon absorb Miyu, and Chloe is still resisting assimilation with her. Even though she understand the First Lady's wish, Illya refuses to let Miyu and Chloe be sacrificed for the sake of that wish. First Lady believes the group's opposition to her wish is due to her being an Echo, thinking they'll forget her as well. Illya tells the First Lady that she's making an mistake, which Chloe had done before. Illya believes the First Lady's wish would eventually become a curse while saying she continued being a Magical Girl thanks to her friends. First Lady responds she had friends as well yet the world abandoned her. She believes Ritsuka will be forgotten once they've save the world, and Mash will hope to retain her bond with Ritsuka forever. Mash realizes the First Lady is pain as she fights against her destiny, which she respects. As the First Lady disbelieves Mash won't forget, Miyu asks Illya to help Chloe and the First Lady both. She says the First Lady's words are false as she hides an impossible wish deep in her heart. Chloe then briefly takes back control of her body to tell Illya do something before the First Lady takes control back. The First Lady reveals her and Chloe's desire for Miyu allowed her to break through the latter's mental wall and fully control her body. She continues that once Miyu is emotional broken by seeing the group's defeat before her, she'll use Miyu to reach infinite parallel worlds. Illya refuses the First Lady's words, and asks Ritsuka and Mash to fight with her. Mash realizes the other Magical Girls she met, while filled with despair, continued to persevere despite that. The group then fight the First Lady in order to save her from herself.

With the First Lady's defeat, Chloe slowly regains control of her body, and Miyu is freed from her restraints. Illya confesses to the First Lady that she had the task to save the world, she wouldn't know what to do. But she does know she wouldn't hesitate to use her magic if her friends and family were in danger to protect them even if it meant her despair. The First Lady is reminded of her old self, and confesses she chose to save the world over her best friend. Her friend refused to be Magical Girl, and became an enemy of the world, forcing the First Lady to kill her to protect the populace. As the First Lady laments she won't be able to apologize to her friend, Helena and Mini Edison appears. Helena has the group move the First Lady outside, where they encounter the Echo that was wandering around the black wall. Helena states she found her moving towards the castle when the black wall collapsed. Ruby has the Echo possess Illya, who proceeds to argue with the First Lady. The First Lady recognizes her as Mila, who became an Echo since she was a Magical Girl even if it was for a brief time. Mila reveals she was a Magical Girl and the First Lady's friend who was killed by her. Ruby realizes Mila is possibly the first corrupted Magical Girl, though Sapphire tells her to be quiet. Mila confesses to the First Lady that she chose her over the world as the people were causing her to despair with their greed and dissatisfaction. She reveals the Reality Marble to be the manifestation of the First Lady's regret, and confesses she wanted to go beyond the black wall in order to bring peace to her friend's heart. Helena realizes Mila was the one who opened a leyline to the outside world, and summoned Chloe to the Reality Marble as her wish. The First Lady reveals Medb was once stronger than her, and used her vast magical energy to open a leyline to Chaldea, making Mash to sleepwalk before her and Ritsuka's arrival in the Reality Marble. The First Lady then begins to disappear causing her Reality Marble to begin collapsing. Wishing to prevent that, Helena asks the First Lady to give ownership of the Reality Marble to her. She wants it to be a place where wounded Magical Girls can go, in order to stop more girls from becoming like the First Lady. The First Lady agrees to this, and gives ownership of the Reality Marble to Helena. Mila helps the First Lady to finally entrust the future to new Magical Girls before they disappear together. Using the power of the jewels, the group (except Helena) return to their respective worlds. However, upon returning to Chaldea, Ritsuka, Mash, and Romani find Chloe there now as one of Ritsuka's Servants.

Some time later, Ritsuka, Mash, and Chloe are suddenly summoned back into the Reality Marble. Blackbeard and the Phantom of the Opera then before the trio, wearing miniskirts on heir regular outfits. They state their love for Magical Girls to the point of wanting to be with them and become one. Unable to become Magical Girls in reality, they found a way into the Reality Marble, and formed the Magical Gentlemen with two other Servants. The group notice the Reality Marble has changed since the last time, with Chloe noticing the spatial connections and enemies being different. She also notices that Helena isn't around despite becoming the Reality Marble's new owner. Although considering Blackbeard and Phantom's desire to be with Magical Girls harmless, Chloe nonetheless attacks them for turning her first mission into a farce. She misses however, even with Caladbolg III, forcing the pair to retreat. The group decide they need to defeat the Magical Gentlemen.

Encountering the Phantom in the candy castle of the Land of Sweets, Mash begins to believe he is harmless. Chloe, however, asks him what he'd do with a bird that stopped singing, as the Phantom used songbirds as an analogy for girls earlier. After hearing his answer that he'd kill the bird if it didn't sing, the group fight and defeat the Phantom. Next, the group confront Blackbeard inside the castle of the Land of Dragons and Sea. Mash asks him if his plans involve bringing harm to the Magical Girls, to which he answers he wants somebody close yet just out of reach even he must take it forcibly. Tired of his perverse nature, the group fight and defeat Blackbeard after he declares the greatest Magical Girl of all is about to appear. Later, they encounter Gilles de Rais inside the library of the Land of Dead Bookshelves. The group questions his interest in Magical Girls instead of something more akin to him, such as saints and witches and the like. Gilles answers he considers Magical Girls to be miracles of God, even calling Jeanne d'Arc a Magical Girl when she lead armies after hearing God's voice. He then takes notice of Mash and Chloe, and mistakes them both for different versions of Jeanne. Seeing he considers even Fou to be Jeanne, the group fight and defeat Gilles.

Next, they encounter Diarmuid Ua Duibhne in the Land of Snow and Honey, witnessing him crying blood as he tells all adult women to stay away. Diarmuid believes Magical Girls to be better than adult women as they possess a dauntless sense of duty and battle instead of manipulating like the former. Unlike Blackbeard and the Phantom's desire to be Magical Girls, he wishes to only serve Magical Girls loyally. After Mash and Chloe are advised by him to never become adult women, the group fight and defeat Diarmuid.

With the Magical Gentlemen defeated, the group return to the Neutral Zone, and prepare to return to Chaldea. However, some occurrence throughout the Reality Marble prompts them to go into the Land of Crystals and Stars, the former kingdom of the First Lady. . Inside the castle, they witness a girl form from shadows before them. The girl names herself Testament, and the group note how she looks exactly like Illya. Ritsuka asks her the purpose of the Magical Gentlemen, and Testament reveals their wishes made her able to come into existence. She is the crystallization of their obsessive desire for a pure and ideal Magical Girl. However, Testament shows herself to be absolutely impure with the desire to spread despair. After the group defeats her, she complains of the ridiculousness of her being the ideal Magical Girl who fulfills the wishes of all gentlemen. As she disappears, Testament reveals the group were summoned into the Reality Marble to serve as spectators and her enemies. She continues the alterations to the Reality Marble will be undone when she disappears, and the group will be returned to Chaldea once the Reality Marble returns to normal. After Testament disappears, the Reality Marble is returned to its original state, and the group return to Chladea.

Participants
Servants

Non-Servants

GUDAGUDA Meiji Restoration
GUDAGUDA Meiji Restoration (ぐだぐだ明治維新) refers to an event which occurred during the aftermath of the Human Order Incineration Incident. It involved a unique Singularity that is a single point in time unconnected to the past and the future.

Setting
During the Battle at the Time Temple, the Demon God Andras developed self-awareness. In fear of his demise, he fled the Time Temple while the battle was still ongoing. He eventually drifted into a Singularity while in a near death state, where he died. However, his residual thoughts resonated with the powerful desire not to die, and fused with it to materialize as an existence similar to a Holy Grail.

Needing to connect with the Spirit Origin of a Heroic Spirit to maintain his existence, Andras called out to those who shared his desire. The first of these was Hijikata Toshizou, who only recalls having been fatally shot at Hakodate. As he wandered the Singularity, Hijikata projected his desire not to die until he wins, which Andras granted and shaped the Singularity accordingly. However, Hijikata's version of immortality wasn't compatible with Andras's own, so Andras sought another to fuse with.

He also summoned Oda Nobukatsu who shared his desire to bless all mortals with eternity. In accordance with this plan, Andras disconnected the Singularity from the past and the future. However, Nobukatsu needed Andras' power to maintain his existence, as he doesn't qualify as a Heroic Spirit. Still needing to fuse with a Heroic Spirit, Andras summoned Chacha, who only recalled being consumed by the flames of the burning, and tried to fuse with her. She escaped from the Singularity even as Andras ordered to Nobukatsu to recapture her. While waiting for Chacha to return, Nobukatsu overthrew the Tokugawa Shogunate while pretending to be Nobunaga Oda and created the Oda Shogunate a week before Chaldea's arrival. Meanwhile Hijikata recreated the Shinsengumi, who eventually came into fierce opposition with the Oda.

History
Ritsuka, Souiji Okita, Nobunga Oda relax in their room. Okita and Nobunga recount non-existent previous events when Mash Kyrielight barges in to alert Ritsuka of an intruder. A Mini Nobu then suddenly appears, but it's quickly dispatched by a masked person. They introduce themselves as Chacha, proclaim herself as a mysterious masked woman from another dimension to tell Ritsuka of an impending doom. She removes her mask when Nobunga finally recognizes her niece, remembering Nobunga was killed by Akechi in Honnoji. After Leonardo da Vinci tells the group Chaldea is infested with Guda Guda Particles, a particles that turns infected Servants into disappointments, the group rayshift.

The group arrive on a beach, and Nobunga quickly kills Edward Teach. Nobunga asks Chacha what time period they're in, but Chacha only knows it isn't her and Nobunaga's era. She then realizes Blackbeard wasn't the problem. Mash believes the era is near the Meiji Restoration. A Nobu Tank then appears to capture Chacha, but the group defeat it. A local fisherman thanks them for killing Blackbeard and the Nobu Tank he says is from the shogunate. He continues there's been endless fighting ever since the Oda Shogunate took over after defeating Tokugawa last week.

The group arrive in Kyoto, and eat a local restaurant when they hear some commotion. A villager tells them it's the Oda and the Shinsengumi fighting again. The group arrive to see a man claiming himself to be Nobunaga fighting another man, who Okita recognizes as Hijikata Toshizou. Hijikata demands she helps him, but she's confused about the situation and the identity of "Nobunaga". "Nobunaga" proclaims himself to be Nobunaga back from the dead when the real Nobunaga recognize him as her brother, Oda Nobukatsu. Nobunaga demands to know why Nobukatsu he made a new Oda Shogunate, to which he responds the people wanted a hero to save them from their decadent ways. Nobunaga prepares to punish him for taking her name, but Hijikata stops her as Nobukatsu is his prey. Okita manages to stop Hijikata while Nobunaga stops her brother. She decides to follow him to where he's camped after he withdraws his troops. Okita reluctantly decides to follow Hijikata to what she assumes is the Shinsengumi headquarters. She and Nobunaga then argue about who Ritsuka will go with. Regardless of which side they pick, Chacha follows whatever side Ritsuka picks.

After a battle between the Oda and the Shinsengumi, if Ritsuka joined the Oda, the group (except Okita and Hijikata) go to Nobukatsu's abode. Nobunaga decides to postpone her brother's punishment until they've defeated the Shinsengumi. While Nobukatsu meets with the weapons merchant with the funds Ritsuka gathered, the group decide to pay Okita a visit. Upon arriving at the Shinsengumi headquarters, Nobunaga and Okita get into arguement when the former mocks the building's sorry state. A Nobusengumi spy then hands a report toHijikata. The reports reads ronin are plotting to burn Kyoto, and they're secretly meeting at the Ikedaya Inn.

After a battle between the Oda and the Shinsengumi, if Ritsuka joined the Shinsengumi, the group (except Nobunaga and Nobukatsu) go to the Shinsengumi headquarters. Okita thanks Ritsuka for gathering the funds to make the Shinsengumi financially stable like it never was. Hijitaka sends them, with Chacha following, out on patrol, which they use a chance to visit Nobunaga. Upon arriving, Okita pities the sorry state of the Oda headquarters, which infuriates Nobunaga. A Nobusengumi messenger sent by Hijitaka then hands a report to Okita. The reports reads ronin are plotting to burn Kyoto, and they're secretly meeting at the Ikedaya Inn.

At the Ikedaya Inn, Saigou Edimori and Katsura Tesla argue about the superiority of their companies' products until their benefactor convicnes them to join them. Okita and Ritsuka then burst into the room to arrest them, which prompts the benefactor to make their escape. Okita tries to go after them, but a group of Mecha Nobbu block her. While Ritsuka and Okita fight the Mecha Nobbu, Nobukatsu, whose revealed to be Edimori and Tesla's benefactor, states aloud he'll become the Oda's official head if the inventors manage to kill Nobunaga. Unfortunately for Nobukatsu, his words were overheard by Nobunaga and Chacha. The two prepare to punish him when Tesla appears to attack her with Nobbu UFOs. Nobukatsu escapes while Nobunaga and Chacha are busy fighting. Meanwhile in the inn, Ritsuka and Okita continue fighting their way out through Mecha Nobbus. Hijitaka then arrives to help destroy the remaining Mecha Nobbus. After they're destroyed, Edimori surrenders, and captured to be interrogated later. Nobunaga and Chacha then arrive with a captured Tesla, who surrendered after the Nobbu UFOs. However, Edimori and Tesla flashbang the group, and escape when Nobunaga and Hijitaka were arguing. As they escape, Edimori reveals his factory in Toba is producing tens of thousands of Mecha Nobbu, and Tesla reveals company in Fushimi is test a powerful weapon. After Edimori and Tesla escaped, Okita collapses from overexertion.

Back at the Shinsengumi headquarters, a slightly recovered Okita thanks Ritsuka for taking care of her. Mash then appears, and explains to Ritsuka that they were heading to the Idekaya, she had Da Vinci analyze the Singularity. Speaking in private, Da Vinci reveals the Singularity is stasis, meaning it doesn't have a future. She continues the Singularity isn't a specific point in history nor is it an altered history, instead it is a single point in time unconnected from the past and the future. She initially assumed the Singularity was a parallel world's history that got derailed at some point. She realized its a world where time has stopped, and that someone deliberately made it so. Suddenly, Ritsuka overhears a commotion coming from Okita's room, and rush there to find out. They find Chacha arguing with Hijikata about taking Okita into battle to Toba-Fushimi when she isn't well enough. However, Okita joins him anyway, causing Chacha to leave, but not before giving medicine to Okita. The group then leave for Toba-Fushimi.

The group arrive at Toba-Fushimi to find Nobunaga there observing all the Nobbu Mechas and UFOs gathered. After Ritsuka explains Chacha ran off, Nobunaga asks Hijikata for his assessment of the enemy. He assess that the enemy outnumbering them leaves them with the only option of distracting them with a feint while another unit flanks. Hijikata decides Okita will lead the feint attack while he flanks the enemy. However, as Okita isn't well enough, Nobunaga decides she'll lead the feint attack instead while Okita and Hijikata lead the flank. As he watches the Mecha Nobbu and Nobbu UFOs being destroyed, Nobukatsu blames Ritsuka for the situation. Chacha soon arrives to see the battle's confusion when she sees Nobukatsu running off somewhere. She eavesdrops on him, and hears him speaking to someone ordering to kill Ritsuka. However, she alerts him to presence when she's shocked aloud by his mention of Taikou. He tells her that he was summoned to be Taikou's servants, and that he'll send her to the castle. Chacha recognizes Taikou is dead, but Nobukatsu tells her that death hasn't affected either of them due to the nature of the Singularity. Meanwhile on the battlefield, Edimori and Tesla disappear after they were defeated by the group. Nobukatsu then arrives carrying an unconscious Chacha. He reveals his true master is the Great Gold Demon Taikou, Toyotomi Hideyoshi. A golden castle then suddenly appears, to which Nobukatsu goes to with Chacha.

In an unknown location, a mysterious voice pleads with Chacha to return to the castle, but she refuses. The voice tells her that her children, and Toyotomi Tsurumatsu, are also here, and again pleads for her to return.

Meanwhile on the battlefield, the group prepare to rescue Chacha. Hijikata ponders about Demon Taikou, seeming to him as the identity of the voice he heard before. The group near the Sun Fortress when they were stopped by fortifications suddenly summoned by Sanada Emiyamaru. They fight Emiyamaru, Gotou Setanta, Mouri Medinaga, Mysterious Chousokabe Heroine X, Akashi Ex, all of whom were summoned by Taikou to obey Nobukatsu's orders while he sacrifices Chacha to Taikou. After all of Nobukatsu's generals disappear, the group continue onward to the castle. Nobukatsu reveals Chacha has already been sacrificed, and Taikou has been revived. He then shifts space to a cavern.

Nobunaga senses a massive amount of magical energy emanating from the Sun Fortress. Da Vinci then contacts the group, and reveal a Demon God is at the core the castle. She explains the Demon God is a corpse of one who died in the Time Temple that somehow drifted into the Singularity, or it fled to the Singularity while it was near death. Golden Demon Taikou Hideyoshi appears and announces the creation of an eternal golden paradise. Nobukatsu explains that within the Singularity, Taikou will bless all mortals with eternity. He then reveals he did of all this to free Nobunaga from her obligations to the Oda, so they can relive their carefree childhoods forever. Nobunaga rejects him though, so he sends wave after wave of soldiers to force her to understand. While Ritsuka, Okita, and Hijikata fight Nobukatsu's army, Nobunaga deals with her brother. After Nobukatsu's army is defeated, Nobunaga prepares to execute him, but she misses on purpose. She then calls out to Chacha, whose revealed to yet be consumed by Taikou. Chacha reveals how she's been hearing the voices of Hideyoshi and their children blaming her for the destruction of the Toyotomi. However, Nobunaga reminds her how Hideoyoshi was only kind to her. Chacha realizes Taikou has been deceiving her, and he asks her she would refuse to live forever with her family. Nobunaga reveals the Demon God had gained self-awareness during the battle in the Time Temple, then it fled in fear of its own death. It eventually drifted in a near-death state into the Singularity where it finally died. Da Vinci reveals Taikou is the manifestation of the Demon God's residual thoughts. It resonated with the powerful desire not to die, then fused with that desire and materialized as something to a Grail. Da Vinci then reveals it cannot maintain its existence without using the Spirit Origin of a Heroic Spirit as a catalyst. Realizing the Singularity will return to normal if they free Chacha, the group fight and defeat Taikou.

In a flashback, the Demon God's name is revealed to be Andras. Andras expresses his fear of dying, and his desire to live in his own world where he can relish his new self-awareness a bit longer. Chacha then appears before him, confused about where she is, and recalling the flames that consumed her. She then notices Andras, and he recognizes that she is also near death after the record that destroyed the Toyotomi. He asks her to let him fuse with her, but she refuses while denying she destroyed the Toyotomi. Andras realizes Chacha was falsely branded as the destroyer of the Toyotomi, and recognizes her as a fitting vessel for him. He decides that she is fit to be his accomplice, and reveals her powerful sense of shame guided him through the sea of death.

In the present, Andras realizes that Chacha will never accept eternity. While unable to understand humans, he also realizes life without purpose is meaningless. After Andras disappears, Nobukatsu begins to disappear as well. He explains he doesn't qualify as a Heroic Spirit, so he could only maintain his Spirit Origin thanks to Andras. After he disappears, Da Vinci and Mash tell the group to escape the Singularity, as it'll soon collapse without Andras. However, it isn't collapsing, making Da Vinci wonder if there's still a shard of Andras somewhere. Nobunaga realizes Hijikata has a shard of Andras, which he confirms. She reveals he was summoned by Andras, which he also confirms. He recalls how he was fatally shot at Hakodate, and the next thing he knew, he was in the Singularity. He wonders if Andras also consumed him, but Nobunaga explains Andras called out to those who shared his desire not to die. She continues Hijitaka is one of the keystones that created and maintained the Singularity, but unlike the others, he didn't need Andras' power. She theorizes if Andras had consumed Hijitaka, then the Singularity would have been more of a hellish battlefield. She then states Hijikata's version of immortality doesn't match with Andras' own, and that he didn't let Andras control his Spirit Origin. Okita wonders if they can talk Hijikata down, but Nobunaga tells her that not even Andras could release him from madness. She realizes Hijikata never realized he turned into a Heroic Spirit after his death. He continued to wander the Singularity's battlefields while projecting his desire not to die until he wins towards Andras. Da Vinci explains Andras granted Hijikata's desire and shaped the Singularity accordingly. Okita wonders if Hijikata intended to continue living while embodying the Shinsengumi forever. Hijitak realizes the group is trapped in the Singularity until he dies. Nobunaga confirms his realization, and offers to kill him if it's too hard for Okita. Okita rejects her though, and tells Hijikata that both he and the Shinsengumi. Hijikata however tells her that the Shinsengumi will live forever for as long as he lives. He then fights the group to determine whether his or Okita's Shinsengumi is the real one. With Hijikata's demise, the Singularity begin to collapse, so the group rayshift back to Chaldea.

In the still collapsing Singularity, Hijikata accepts that he died. Andras then appears and tells him to leave before the Singularity collapses completely. Hijikata wonders if Andras is concerned for him. He also regrets he wasn't more compatible with Andras, as the Singularity would've been better fortified otherwise. Andras confirms Hijikata's regret, and reveals that he learned to die lamenting the life that's been lost thanks to Hijikata. He sees this as the sole saving grace he received with his self-awareness. He continues he will disappear at the end of his drifiting while Hijikata will disappear at the end of his battle, as per the fate of his Spirit Origin. Calling Hijikata his beacon, Andras tells him to keep fighting, even though he knows he cannot be saved. He calls this Hijikata's punishment for briefly redeeming his evil, as well as his final wish. After Andras disappears completely, Hijikata states he'll accept whatever battlefield he's summoned to. Meanwhile in Chaldea, Chacha gives Ritsuka the Grail she took from Andras, and joins Chaldea.

Participants
Servants

Non-Servants

Fate/Apocrypha: Inheritance of Glory
Fate/Apocrypha: Inheritance of Glory refers to an event, part of a collaboration between Fate/Grand Order and Fate/Apocrypha, which Ritsuka Fujimaru was involved in, having being summoned in a dream by Sieg. It involves a recreation of the Great Holy Grail War in Trifas, within the Greater Grail.

Setting
Even after absorbed into the Greater Grail following their death by Shirou Kotomine, Darnic Prestone Yggdmillennia and Vlad III's souls remained fused together. Many years after Sieg brought the Greater Grail to the Reverse Side of the World, Darnic manifested within its inner world. Still clinging to his dream to acquire the Grail, he sought to take control of it. He recreated Trifas and the Hanging Gardens of Babylon, and rematerialized the Servants who participated in the Great Holy Grail War with the exception of the Rulers. However these Servants are merely mindless husks, programmed to fight each other endlessly. The recreated Holy Grail War is also resets whenever the sun rises. Eventually Sieg, fearing the Grail would go out his control, he summoned Ritsuka Fujimaru to the Reverse Side with the Grail's power.

History
Ritsuka find themselves in an unknown location, as a mysterious voice calls to them. The source of the voice is a dragon, who reveals Ritsuka is currently in a dream yet isn't. He explains he has summoned them into this realm through the power of the Holy Grail. He tells them that they need their power to save this currently endangered world, knowing they've been working to restore humanity. He then introduces himself as Fafnir when Ritsuka demands to know. Ritsuka asks him if they can't leave unless they help him, which makes Fafnir he gone too far in summoning Ritsuka. He prepares to take care of the manner himself when Ritsuka asks for more details. He explains that they're currently in the Reverse Side of the World, where the Phantasmal Species took refuge after humanity became the dominant species on the planet. He also reveals the collapse of the Human Order allowed some creatures to enter the human realm. He explains the Reverse Side is also in danger because of the Great Grail he brought. He then reveals a Holy Grail War is currently being commenced in the broken Grail, and the total number of battles is beyond 10,000. He explains at the start there was only two Servants; At 567 battles, there were four Servants; At 2,313 battles, there were seven Servants. From there, certain changes were made to the Grail, meaning someone is trying to use it for themselves. Fafnir warns at this rate, the Grail will get out of control. He explains he cannot use it himself nor can he let others use it. He warns the worst case scenario it is that a piece of the world's Texture will tear off, which will plunge the world into a chaos of fantasy and reality. After Ritsuka agrees to help, Fafnir flies them into the Grail.

Upon arriving, Fafnir finds that Trifas has been recreated with incredible accuracy, and he wonders what they're trying to achieve. He explains that Trifas was the location of Great Holy Grail War. After wiping out a group of golems and Dragon Tooth Warriors with a single breathe of his fire, Fafnir senses a Servant, and is struck down by Vasavi Shakti. He crash lands into the forest below, and tells Ritsuka his wings are too damaged to fly for a while. He then explains the Servants are more akin to robots, sharing the same combat prowess, but lacking the emotions and logic of their originals. He ponders how a recreation of the Great Holy Grail managed to emulate Noble Phantasms. Ritsuka warns him of an incoming attack, but Fafnir tells them to run to the fortress since his body is too slow for them to escape together. He is struck by Balmung when a Servants finds him and Ritsuka, recognizing them as a Master. Fafnir leaves Ritsuka to the Servant, who leaves Fafnir in Rider's care and escapes the forest with them. Upon exiting the forest though, the pair run into a group of Dragon Tooth Warriors. He introduces himself as Chiron, and fights the warriors. After the warriors are destroyed, the pair continue retreating to the fortress.

The pair arrive in Millennia Fortress, and Chiron explains the enemy forces will disappear when the sun rises. He explains to Ritsuka that the Great Holy Grail War was a battle between fourteen Servants unlike the standard seven. He reveals the winner of this war, and current owner of the Grail, is Fafnir. He explains this world is a recreation of the war, but only Trifas and the Hanging Gardens of Babylon exist. He further explains the recreated Servants weren't meant to have a will of their, instead they were programmed to fight each other endlessly. He also reveals none of the Servants have any memories of the Great Holy Grail War, which is why he doesn't know how Fafnir won. He explains Fafnir is the Grail's supervisor, but he doesn't why he's inside it now. He then reveals that of the fourteen Servants, twelve of those are those are the enemy. Due to how the war restarts every sunrise, he cannot recall any of the Servants' names, besides that of Rider's, and believes Fafnir may know more. While he wants to help to stop the recreation, he also knows the enemy is too numerous for them right now. He also reveals the enemy are able to deploy their Noble Phantasm despite having no consciousness. Ritsuka asks how a Servant can regain their consciousness, but Chiron is unsure, only theorizing Fafnir's presence has something to do with it. He then warns that even though he and Ritsuka are safe for night, the Servants will attack the fortress as programmed after taking Ritsuka and Fafnir's existence into account. Rider then enters, and introduces himself as Achilles. Chiron asks him how Fafnir is doing, to which Achilles replies that he's currently resting in the garden.

Ritsuka visits Fafnir in the garden, and asks him turned Chiron and Achilles into proper Servants. Fafnir confirms this, and says he should turn all of the Servants into proper ones to help find the one behind the recreation. He considers that method inhumane though, even calling his conversion of Chiron and Achilles in the forest to be a great sin. Then, not wanting to be useless with a immobile body, he creates a terminal for himself. The terminal introduces himself as Sieg, and goes back inside with Ritsuka to meet with Chiron and Achilles.

Back inside, Chiron tells everyone they have no chance of winning with their current numbers. He then asks Achilles if he can recall anyone from the original war. Achilles replies he can only barely recall Vlad III and Atalanta. Sieg then explains the fourteen Servants were split into the Black and Red Factions. The Servants of Black: Siegfried, Vlad III, Astolfo, Avicebron, Frankenstein, Jack the Ripper. The Servants of Red: Mordred, Atalanta, Karna, William Shakespeare, Spartacus, and Semiramis. Sieg agrees with Chiron that they stand a chance against twelve Servants, and recognizes why his initial plan to fight them himself failed. In response to this, Chiron decides to hold a discussion on how to defeat the twelve Servants. Sieg suggests defeating them with their Noble Phantasm, but realizes that will not work. Achilles suggests they defeat them individually, but Chiron says that won't work either. He explains such a method would leave their own forces too focused on one area, and points to the fact that the other Servants won't just stay put. Ritsuka suggests defeating at least three Servants, which Chiron accepts the correct course of action. He then says he and Achilles will fight nine Servants while Ritsuka and Sieg take on three. Sieg and Achilles find the ridiculous, given how numbered they are either way, and how the enemy can use Noble Phantasms. Chiron explains that while Noble Phantasms are a Servant's trump card, they also their greatest weakness. He continues the enemy Servants are programmed to deploy their Noble Phantasms whenever possible, not when it's most appropriate. Sieg realizes they can just detect and dodge the Noble Phantasms in that case, Chiron decides to train the group on how do just that by tonight. Chiron states that the Servants have been continuously revived, but believes that with Ritsuka and Sieg it'll be possible to win now.

After getting some rest, Ritsuka goes to the garden to see Chiron training Sieg. Chiron explains they will lay out traps that will deploy barriers to seperate the nine Servants. After they leave to set the traps, Sieg tells Ritsuka how those two used to be enemies, and how Chiron was the only Servant of Black that could penetrate Achilles' divine protection. He then reveals he was a homuculus designed by Ydggmillennia to supply their Servants with mana that managed to escape. He explains the Greater Grail is something very important to a certain Servant fought in the Great Holy Grail War, which is why he cannot let an outsider have it.

Later that night, the group observe from the fortress wall that the Servants are approaching the fortress. Chiron tells the others he and Achilles separate them, then Ritsuka and Sieg will go and defeat three of them. He then jumps down from the fortress with Achilles, and activates the traps they set up earlier to separate the Servants. Ritsuka and Sieg then engage Avicebron, Shakespeare, and Jack in battle. After they're defeated, Avicebron, Shakespeare, and Jack disappear along with the other nine Servants when the sun rises. Sieg thanks everyone for their help, and hopes they'll see some changes by tonight. He tells Achilles that he is the Grail's caretaker, and that he just can't break it just because he possesses it. Chiron says they should rest for today, and decides he'll rework the traps by tonight since he's unsure the same tactic will work again. The group then return to the fortress to rest.

Inside the fortress, Sieg leaves Ritsuka to rest while he checks on his main body. Later, Ritsuka find themselves woken up by Jack, who calls them her "mommy". Sieg then barges in to tell Ritsuka when he spots Jack. He tells her that he is ally when she asks him if he's either an ally or an enemy. He then tells Ritsuka to come with him, as the other two from the other night also arrived with Jack.

In the garden, Ritsuka and Sieg meet Shakespeare and Avicebron there. Avicebron asks Sieg if the only ones revived are those that engage in battle with him. Sieg confirms this, and ask him and Shakespeare if they can remember anything after their revival. Neither Avicebron, Shakespeare, nor Jack can remember anything though. Regardless, Chiron is elated to see that they've gain three allies at the same time. After explaining the situation, he realizes that since they managed to convert Avicebron, Shakespeare, and Jack into allies, they should be able to do the same with the other nine. He then gives Ritsuka and Sieg command of Avicebron and Shakespeare since neither of them are oriented for combat. Ritsuka decides they should first make sure Shakespeare doesn't slack off. Sieg agrees to take an eye on him so he doesn't cause any chaos within their ranks. Later, he tells Jack about how he saw her past, and how they were defeated by another Servants, as he witnessed it. Ritsuka then arrives to tell them to prepare for the upcoming battle tonight.

Later that night at the fortress wall, Chiron tells the others that they'll repeat the same tactics from the previous night. However, he decides to have Achilles help Ritsuka and Sieg, instead of letting them fight three Servants alone with before. He then orders Avicebron to support with his golems, and Shakespeare to buff whatever party he finds interesting. Ritsuka finds such a order worrisome, but Shakespeare decides he'll help their side since they're more fun. After Jack agrees not to aid Ritsuka, the group jump down from the wall to defeat Spartacus, Atalanta, and Frankenstein. After the Servants disappear with the rising sun, Chiron tells everyone to return to the fortress quickly since Shakespeare is absent.

The group return to the fortress, and find Shakespeare safe and sound. Both Sieg and Chiron agree that the enemy may become more aggresive now that they are gaining the uppper hand. Achilles is concerned that the enemy Servants all seem to have divinity in them for some reason. Jack is also concerned that they might lose if the enemy gets stronger. After getting some rest, Ritsuka wakes up to see Sieg has brought food for the both of them. Sieg asks Ritsuka about themselves, and expresses his embarrassment at the way he spoke when he first met Ritsuka. He then senses something attacking the garden, so he and Ritsuka rush there to see.

Ritsuka and Sieg arrive in the garden to see Frankenstein attacking Fafnir. Ritsuka realizes she doesn't want Fafnir in her flower garden, but Sieg says his main body cannot move now. As Frankenstein begins pushing Fafnir to the other side of the garden, Spartacus arrives ready to fight the dragon, identify him as an oppressor. Ritsuka tells him Fafnir isn't an oppressor, so Spartacus decides to sleep in the garden until an oppressor appears. Meanwhile inside the fortress, Chiron asks Atalanta to help set the traps for tonight.

Later that night, the group prepare another three Servants. Atalanta starts off by deploying Phoebus Catastrophe, but Astolfo uses Hippogriff to avoid the attack. In response she and Chiron go to engage the enemy directly, but he finds the enemy is using his own tactics. Sieg asks Jack to identify the enemy, to which she answers she sees two Sabers, a Rider, and a Lancer along with Shadow Servants. The group fight and defeat Mordred, Siegfried, and Astolfo. After the enemy disappears when the sun rises, Sieg expresses his concern about the possession ration of the Grail isn't changing to their favor. He explains if it remains so someone other than him will gain control of the Grail.

Later in the garden, Astolfo, Mordred, and Siegfried meet with the others. After the situation is explain to them, Siegfried agrees to help while Mordred picks a fight with Achilles. Frankenstein stops them before their fight intensifies since she doesn't want her flower garden ruined. Sieg reveals his possession ration is steadily declining, so Mordred decides they should attack the enemy directly. She identifies the Hanging Gardens as the enemy base, and Chiron agrees with going on the offensive since their forces are large enough. Sieg explains Semiramis is a force to be reckoned with attacking the Hanging Gardens, which Chiron says she's been using to attack them. He also says the group's chances of success are extremely low since twelve Servants will be guarding the inside of the Gardens. Atalanta wonders about attacking the Gardens during the day. Avicebron reveals though a flying golem is sent to there on Chiron's order was forcibly transported outside when night arrived. Since there are no alternatives other than a frontal assault, Chiron asks Sieg if he can move his main body. Sieg answers he should be able to fly at minimum, but warns he'll fall if hit by from a Noble Phantasm, especially Balmung. Since Sieg is afraid of failing everyone, Achilles and Astolfo agree to fly alongside him and support him. Shakespeare says he will write a song of bravery to help boost Sieg's luck. Avicebron says he will send flying golems made from the fortress to act as a frontal shield for Fafnir. Atalanta says the most she can do is fire arrows when she sense Sieg knows something. He recalls her using her other Noble Phantasm, Agrius Metamorphosis, to fly during the Great Holy Grail War. Atalanta decides to use it, even though it isn't meant for prolonged flight. Jack decides she use The Mist against the enemy, and she'll ride Fafnir with Ritsuka. Chiron tells Shakespeare and Avicebron that they will also be riding on Fafnir as well. He decides to ride with Achilles, and Siegfried decides to ride with Astolfo. Spartacus decides he'll fly to the Gardens himself, but since that isn't possible as the others point out, he accepts Atalanta's suggestion of using a rope. After the group train against Avicebron's golems, Ritsuka tells Sieg of their adventures out on the fortress wall. Later the group have picnic before going to assault the Garden later tonight.

Later that night, the group fly towards the Garden; Fafnir announces they will be in combat range in three minutes. Entering the range of the Gardens' defenses, Avicebron uses his golems to create a shield while Astolfo uses Hippogriff to dimension shift. , one of Achilles' horses, then warns of the possiblilty of the enemy sending replicas of Achilles and Chiron. Though Chiron tells Achilles to be prepared for that possibility, Achilles thinks Xanthus was only joking until his replica arrives. Meanwhile on the ground, as the enemy charges towards the others in the sky, Mordred amplifies Mana Burst with Frankenstein's help, and uses it to launch them both up. Back up in the air, Avicebron's shield is broken by Karna, and he also keeps on dispersing Jack's mist. Suddenly though he is sent flying when the recently launched Mordred and Frankenstein hit him. The pair land in the Gardens, and Frankenstein begins rampaging while Mordred starts deploying Clarent Blood Arthur. With Karna gone now, the group prepare to land on the Gardens.

Upon landing, Fafnir switches back to Sieg. As the group proceed further in, Sieg warns they will likely he encounter Karna, Vlad, and Semiramis. He says all of them (with the exception of Karna) are seeking to the use of the Grail, but he someone wants to use it even more. Later, they meet up with the Mordred and Frankenstein, and together they fight Karna, Vlad, and Semiramis. After they're defeated, Spartacus finally arrives in the Gardens, having climbed up this whole time. Sieg declares with dawn coming, and their victory over Semiramis, they have gained her as an ally. As a result of this they've gained her Gardens, but it still belongs to the enemy. Semiramis confirms this, and assumes the situation is because of Sieg's taking the Grail to the Reverse Side. Chiron asks her if she knows the enemy's identity, to which she replies that she does. While she doesn't have her memories of the Great Holy Grail War, Semiramis says she merely analyze her Garden to locate the enemy. After Karna wakes up, she takes the group to the chamber where the Grail is, and where they'll meet the only other Master besides Ritsuka.

At the chamber of the Grail, the group meet a man who reveals he re materialized and replicated thirteen Servants. He continues that with 87% of the Grail's core dominated, it'll be sufficient enough to grant his wish. Semiramis tells him that he'll never gain his wish no matter many decades he has the Grail, and refers to him as Vlad's fake. Semiramis reveals the man before them isn't a Servant yet he is also Vlad. Sieg explains that besides himself and a certain priest, the only one who came close to acquiring the Grail is the man before them. He reveals the man to be the leader of the Ydggmillennia and the Master of Vlad, Darnic Prestone Yggdmillennia. He asks him if he still seeks the Grail even with his own consciousness fading away. Darnic replies that those who blessed, like the Heroic Spirits, would never understand his hard work and desperation throughout the decades he prolonged his life to acquire the Grail. Sieg tells him that doesn't matter, as the mage known as Darnic has been long dead, and the man before them is a remnant of Darnic's wish. He explains to Ritsuka that Darnic fused with the vampiric form of Vlad through the use of a Command Spell. After becoming a monstrosity beyond that of a vampire, Darnic came close to taking the Grail, but he was destroyed by a certain priest from the Red Faction. Sieg explains it should have ended there since a Servant should revert to pure mana and return to the Greater Grail when they died. However that never happened because Darnic was human, and also because Darnic had been prolonging life by fusing his soul with that of a infant's As a result of these factors, Darnic is neither a human nor a Servant, he is merely a being instinctively seeking to grant his wish to acquire the Grail. Sieg reveals a severely damage cannot use the Third Magic, nor can it reach the Root. He tells Darnic to give his dream, but he refuses to. He reminds the group he already possesses 87% of the Grail, and says he's used more efficient than Sieg, who merely waited for visitors that would never come. He declares that as long as he possesses the Grail, none of the group will ever disappear, but they'll disappear once he's gone. He then proposes to use the Grail to incarnate them if they agree to join him. However they all refuse his proposal because of their own principles as heroes. Expecting that to be their answer, Darnic decides he'll force them to fight until they beg to be incarnated. He then connects to a mimicry of the Greater Grail, and it emerges from within the Greater Grail to Sieg's shock. Semiramis asks Darnic if he is trying to forcibly a parallel universe, but he doesn't care as long as he grants his wish. After Sieg declares he will defeat Darnic as the Grail's supervisor, the group fight the replicate Grail. Unfortunately they are becoming overwhelmed by replica Servants continuously spawned by the replica Grail. Chiron realizes the replica Grail is emulating their combat data, and sending the correct Servant class to counter them accordingly. He then decides that since the replica Grail is exploiting their weaknesses, they should do the same. After the replica Grail is destroyed, Darnic refuses to give up when someone tells him it is the end. He is then struck by Kazikli Bey, and questions how Vlad could be here since he was supposed to been sealed. He assumes he is another replica since he couldn't be reborn as a Servant with his mind intact. Vlad congratulates the group on their victory, and says their intense battle invited him. He tells Darnic that his own rage and ambitions have disappeared, he should give up. He then reveals he is the only Servant among the fourteen to possess their past memories, which he assumes to be a result of Darnic fusing with him during the war. He then says he will not kill Darnic out of rage or personal grudge, but out of his duty as a hero and his mercy as a Servant. Darnic however refuses to believe Vlad has abandoned his hatred towards him for his betrayal. Vlad however reveals he reveals he never hated him, and his rage towards him at his betrayal was merely impulse. He continues that no matter much the world demonizes either of them, they always dedicated themselves to their dreams. He tells Darnic to give up as his dream has been broken, and even if he recovers it, it will never shine again like before. Darnic finally accept he cannot recover his broken dream, and disappears. Vlad declares that with this, the Great Holy Grail War has truly ended. He then tells Sieg that even without the Grail, someone will achieve True Magic, and eventually he will gain a happy ending. After Vlad disappears, Semiramis teleports everyone out of the crumbling Gardens.

Back on the ground, the Servant disappear after saying their goodbyes to each other, Ritsuka and Sieg. Afterwards, Sieg states the recreation will disappear soon, and the Grail is now stabilizing. He then changes back to Fafnir and returns Ritsuka to the Reverse Side, where he will continue to wait for someone. As thanks for their help and friendship, Fafnir gives Ritsuka his Sieg terminal to aid them. He tells them that he will continue to wait for his someone no matter how long it takes because he knows they will definitely come. After returning Ritsuka to the real world, Fafnir accepts the Sieg that Ritsuka will summon as a Servant will gain his own memories while continuing to wait.

Participants
Servants

Non-Servants

GUDAGUDA Strange Tales of the Imperial Holy Grail ~Far East Devil Battlefront 1945~
GUDAGUDA Strange Tales of the Imperial Holy Grail ~Far East Devil Battlefront 1945~ (ぐだぐだ帝都聖杯奇譚 ~極東魔人戦線 1945~) refers to an event which occurred during the aftermath of the Human Order Incineration Incident. It involved a Singularity created at the coordinates of Tokyo in 1945.

Setting
Akechi Mitsuhide transformed Tokyo into a Singularity by placing fragments of a Holy Grail at certain coordinates on the leyline in a wedge formation. He sought to create a Saint Graph that would become what he would declare as the true Oda Nobunaga. In order to achieve his goal, he initiated a Holy Grail War to assemble a massive number of Servants. However unlike a regular Grail War, the Servants have no Masters, and instead fight to earn class titles. Once a Servants earns a class title, they are permitted to create territories inside the wedge formation formed by the Grail fragments called a Red Line. If the proper owner of a class title stays with their Red Line, their mana is constantly replenished, and they're bestowed with the Grail's blessing. Because of this, Servants seek to expand their territories by seizing of other territories to increase their blessing from the Grail. By the time of Chaldea's involvement, this Grail War already repeated itself many times.

In truth though, all of Tokyo is Akechi's Red Line, and the Servants' mana is accumulated into the Grail every time the war repeats. This is for the purpose of forging a Saint Graph of the highest purity. Seeking to create his ideal Nobunaga, Akechi used to the Grail to forcefully summon Nobunaga to eventually serve as the catalyst. Nobunaga sensed this though, and cut herself before her Saint Graph fully materialized itself. She then used her own Saint Graph to summon Nobukatsu to serve as her vessel in an emergency.

Considering Akechi's ritual to be a threat, the Counter Force deployed Sakamoto Ryoma and Oryou into the Singularity. Ryoma and Oryou eventually killed the official Rider, and proceeded to investigating the Servants' Red Lines. Okita Alter was also summoned into the Singularity to serve as a Counter Guardian once for the purpose of stopping Akechi to repay Okita Souji's debt from when the World stopped her illness from claiming her as a child. Unfortunately though, she was summoned without any memories and knowledge of the ear, along with poor combat skills and initially the inability to speak.

History
At the conclusion of a certain war, Nobunga Oda and Okita Souji face off against each other, with the latter being in poor condition. Okita asks Nobunaga she betrayed Ritsuka, to which she answers they stood in the way of her ambitions. She then declares no can stop her from using the Maxwell Reactor to destroy Okita, and rewrite history as her paradise. Okita realizes that is the reason Lady Chacha, Hijikata Toshizō, and Ritsuka had to die. Nobunaga prepares to kill Okita when a mysterious light appears before the latter. Okita then uses it to become Okita Alter.

In Ritsuka's room at Chaldea, the previous events are revealed to be explanation from Okita why she is suddenly in her alter form. While Nobunaga panics at the situation, Ritsuka asks why they were killed by her, but she doesn't answer. Chacha asks Okita Alter if she shares the memories of her original self. The scene is then reveal to be a memory of Chaldea viewed by Okita Alter.

Ritsuka suddenly themselves rayshifted to a city. They're found by a citizen who tells them to run since the alarm is going off. Ritsuka learns from him that they're in Imperial Tokyo when a Nobbu suddenly appears. Seeing several citizens being massacred by Nobbu, Ritsuka tries to run away. However they bump into someone they assume to be Nobunaga, and they are shot. Recognizing them as an outsider, Nobunaga assumes Ritsuka was summoned by Caster, and tries to kill them. However the bullets are blocked by Okita Alter, who Nobunaga assumes to be Ritsuka's Servant. She then fights Okita Alter to test capabilities as a Servant. She is disappointed though by her lack of strength, and prepares to kill her. Her bullets are however deflected a mysterious woman, then a mysterious man appears afterwards. They all then escape, with the woman carrying Ritsuka, while being chased by Nobbu. After escaping to safety, the man tells Ritsuka that the bullet didn't hit any vital organs. He then introduces himself as Sakamoto Ryoma.

At a certain place in the city, an officer reports to General Omami that Servants were spotted within the Red Line. He continues there were three spotted, with their classes being Saber, Archer, and Lancer. He believes with each of them fighting now, it's rather impossible to identify them. Omami asks for a description of the three Servants. The officer describes Saber as a female swordsman, Lancer as a samurai spearman, and he reveals Archer's True Name has been identified. Then, to his utter shock, he reveals Archer's True Name is Nobunaga Oda. Delighted by this, Omami asks him how the army of Heroic Spirits is coming. The officer answers that two platoons have been formally approved and posted within the imperial capital for the purposes of security and surveillance. Omami orders him to continue the surveillance for the sake of the capital, then gives him permission to leave. After the officer leaves, Omami laughs at himself maniacally that Nobunaga has returned.

Ritsuka wakes inside a room, and asks where they are. Ryoma answers they are currently in an old detective agency. He then introduces the woman whose been staying by their bedside as his assistant, Oryou. After eating, Ritsuka asks him if he knows about Chaldea. Ryoma replies that he doesn't know it, only identifying Ritsuka as a visitor from the outside. He then notices Okita Alter has a particular interest in Ritsuka, and asks her to introduce herself. Okita Alter however doesn't know name, so Ritsuka decides to call her Okita Alter. Then over some tea, Ryoma explains they are currently in a Holy Grail War without Masters, and where the Servants compete for a class title. He specifies the Servants fighting for a class title are more like failure fighting to become a real one, and compares it to a preliminary round. Okita Alter wonder if she is one of those failures, but Ryoma is unsure since she has a Master. He asks her why she is with Ritsuka, and she answers that she was with them when she woke up, and felt a need to stay by their side. Leonardo da Vinci and Mash Kyrielight then make contact, which surprised Ryoma since Imperial Tokyo is quarantined. Da Vinci realizes the quarantined space of Imperial Tokyo was the reason they couldn't locate Ritsuka after they were rayshifted into the city. Ryoma then introduces himself to her and Mash, and identifies that they're from Chaldea. Da Vinci thanks him for saving Ritsuka, and decides to trust their decision to trust Ryoma. She then asks him what his goal is, to which he answers it is to either retrieve or destroy the Grail. He explains his reasoning as wanting to save those suffering from the Grail War. Da Vinci finds his reason to be suspicious since according to his profile, he was a greedy person in life. After she and Mash introduce themselves to him, Ryoma makes the assumption that da Vinci already observed the irregularity in the city. She confirms such, and reveals Ritsuka and others are in an isolated space containing only Tokyo. She explains an invisible barrier is surrounding the entire space, which makes physically entering or exiting difficult. Ryoma confirms what da Vinci just said, and says neither a Servant nor a human can leave the city. Mash asks how Ritsuka will return then, but da Vinci assures her that since they were able to communicate with them, they should be able rayshift them back. She explains though more information and stability is required to increase the success of the rayshift. She then gives her deduction of the Singularity, and a few points on the leyline formed the barrier that maintained space and time in the city. She continues she identified a few coordinates, and Ryoma agrees to investigate. She then begins to experience interference from a third party, and sends the coordinates before communication is cut. Ryoma then prepares to leave to check on the other Servants' movements, and asks Ritsuka to take some of his jobs if they have the time. He states it shouldn't be as dangerous since they're quite distant from the Red Line. He explains that when the proper owner of a class title stays within the Red Line, they are bestowed with the Grail's blessing. He continues because of this the Servants are starting to trying to take each other's territories. He then reveals that as a Rider, he seems to be able to ignore the Servants' red line, which helps with his investigations. After leaving the office, Oryou asks him if he's fine with Ritsuka and Okita Alter guarding the office. He answers that Ritsuka seems trustworthy, but he seems troubled about Okita Alter's identity.

Ritsuka and Okita Alter listen to a radio broadcast announcing that the army's 4th Division of the Magus Facility will initiate a Holy Grail War at a unspecified time. Okita Alter is concerned she doesn't have any memories of her past, and questions if she really is Okita. She is also worried that she wasn't given knowledge of the era after being summoned, and worse she couldn't speak until a moment ago. She questions what she is, and asks Ritsuka if they're fine with being contracted with her, even if it's proper. They accept her regardless to her appreciation. She then senses someone coming when a man enters asking if he's at Ryoma's place. After Ritsuka confirms such, the man tries to kill them. Okita Alter manages his attack though to his annoyance. He laughs at her for being so weak despite supposedly a Saber, the pinnacle of the three knight classes. He attacks her, but she manages to defend herself. He questions if she is a Saber, calling her swordsmanship amateur and her sword fake. Seeing they're at a disadvantage, Ritsuka and Okita Alter escape.

Ritsuka and Okita Alter escape to the street, but the man easily catches up to them. He tries to attack them, but his strike blocked by Oryou. Ryoma identifies the man as Okada Izou, who brands Ryoma as a traitor and tries to attack him. His attack is again blocked by Oryou. Izou then angrily blames Ryoma for why he was executed, saying he sold him out. Ryoma apologizes for what happened, but explains he doesn't have time to deal with him since he's being chased. He then dodges a sudden attack from Okita whose been chasing him for crossing her Red Line. She also notices Izou, and becomes confused at seeing Okita Alter. Ryoma tells Oryou to carry Ritsuka, Okita Alter, and Izou, and together they escape. Okita tries to chase after them but her illness stops her; she realizes Okita Alter is the same as her.

At the detective agency, Ryoma allows Izou to kill him as revenge for his betrayal. Izou attacks him, but he's shocked that Ryoma didn't dodge it. After he's healed, Ryoma reveals he now understands the situation better thanks to Chaldea's data and his own findings. He continues he located a few coordinates with fragments of the Grail installed with a pinpoint wedge. It meant to be utilized by the summoned Servants, and it is where they set up their Red Lines. Ryoma explains Servants stealing each other's territories and fighting for territorial supremacy is the rule of this Grail War. Da Vinci explains that since the Singularity is maintained by the Grail fragments, the Singularity will be corrected once they're destroyed. However she questions why this new type of Grail War was created to maintain Imperial Tokyo, but she decides to leave that to Ryoma's investigation. Before communications are cut off again, she explains the wedges and Red Lines act in parallel to each other, meaning the less territory a Servant has, the weaker their blessing from the Grail is. Ryoma states their next objective is to take down the Red Lines, then destroy the Grail Fragments. He then says Izou will also help, but Izou questions why since he's part of this Grail War. Ryoma tries to convince him with admiration of his skills, then mentions Okita and another member of the Shinsengumi will be tough opponents.

Izou protects Ritsuka and Okita Alter as they head to Lancer's Red Line. They soon arrive at Lancer's Red Line, but Izou becomes slightly concerned when Lancer's presence suddenly disappear. He then sense another presence and has Ritsuka and Okita Alter follow him inside, where they're greeted by Li Shuwen. Izou asks him if he killed Lancer. Li Shuwen answers he wanted to his skills against the official Lancer, but he won with a single strike. He and Izou then fight each other. Meanwhile Ryoma and Oryou investigate a site when they're spotted by Hijikata. He then attacks the pair for trespassing on what he calls Shinsengumi territory. At the same time, Izou is losing against Li Shuwen, to the shock of the former and the disappoint of the latter. He then realizes Li Shuwen is now an official Lancer, and believes the Grail's blessing is stronger for the three knight classes. Ritsuka and Okita Alter tell him though that isn't the case, and that Li Shuwen is just that strong. While understanding Izou's talent surpasses his own, Li Shuwen points out to him that his pride in his own technique is why he's losing. Seeing Izou is unable to fight, Ritsuka orders Okita Alter to fight despite Izou's objections. Despite her amateur swordsmanship, she manages to fatally wound Li Shuwen. He tells Izou to adopt a mindset of raising over his opponent, instead of being above his opponent before disappearing. Okita Alter realizes her movements had improved when she saw Okita earlier. She then thanks Izou for slowing Li Shuwen's movements with his attack, but he doesn't appreciate it and leaves.

At a certain office, an officer reports to Omami that Lancer's Red Line has been eradicated. He posits that Assassin is responsible for Lancer's death while injured himself. Afterwards he escaped while covering their tracks and hiding from the army's surveillance. Omami tells him to leave Assassin be since he won't last long injured. After the officer leaves, he prepares to leave himself, stating Nobunaga's feast has been fully prepared.

After Ritsuka and Okita Alter return to the detective agency, Ryoma tells them he found Berserker and managed to escape. Da Vinci then states the wedge under Lancer's control has been destroyed. Ryoma says he was unable to defeat Berserker, and decides they'll destroy his wedge tomorrow. Da Vinci explains that with every wedge destroyed, the interference gets weaker. After communications with Chaldea are again cut, Ryoma notices Izou isn't around. Ritsuka tells him what happened, so he decides to leave it be for now.

Meanwhile in Nobunaga's Red Line, she meets with Caster's assistant. She is handed an agreement of cooperation, and has Oda Nobukatsu read it. The agreement calls for a ceasefire between Nobunaga and Caster until all Servant except them are eliminated, and once that is complete, he will give the Grail to her. While she and Nobukatsu are suspicious, Nobunaga accepts Caster's terms regardless. After the assistant leaves, Nobunaga reveals she already knows Caster will betray her in the end.

Back at the detective agency, Ryoma reveals he was able to locate Saber and Archer thanks to Chaldea's intel. He was unable to locate Caster though, so they'll have to right for them to make a move just to get a lead. Oryou asks whether they go after Saber or Archer, and Okita Alter decides Saber. She explains it is because she feels the need to see Okita again. Ryoma accepts her choice as the right choice if she truly is Okita's alter. He warns her to be careful though, as Okita was strongest among the Shinsengumi. Oryou decides she and Ryoma will go after Nobunaga, then they leave. Afterwards, Ritsuka and Okita Alter leave for Okita's Red Line.

Ritsuka and Okita Alter arrive at Okita's Red Line, where they were expected. Okita prepares to fight, and tells she and the Okita Ritsuka knew are essentially different people, as they should know. Okita Alter asks her if she is her, but Okita is unsure since she never wielded a large sword. She and Okita Alter then begin their duel.

Meanwhile, at Nobunaga's Red Line, she is surprised Ryoma and Oryou were able to break through her forces. He tells her that he suspects she is the key to this Grail War. Nobunaga asks him if he is abandoning the war, to which Oryou reveals she already killed the official Rider. Ryoma reveals he is an outsider, and he's only in Imperial Tokyo to help save the world. Nobunaga realizes he was sent by the Counter Force, and she is delighted at finally be the World's enemy. Ryoma then activates Like a Soaring Dragon, and begins his fight with her.

While continuing her duel with Okita, Okita Alter sees flashes of her past. It is revealed that her caretaker offered her to the World to save her from her terminal illness as a child, and in exchange, she became a Counter Guardian. Now having regained her memories, Okita Alter's swordsmanship drastically improves. Okita reveals her mana is constantly replenished in her Red Line, and the Grail's blessing doesn't allow her illness to affect her. She then puts on the Coat of Oaths, having decided to fight Okita Alter at full strength. After Okita is defeated, Okita Alter questions her she wasn't seriously at first about killing her. Ritsuka realizes that Okita was trying to train Okita Alter during their duel. She denies it, claiming she was nothing but a murderer. She is then gives Okita Alter the Coat of Oaths, and tells her to protect Ritsuka like she failed to protect her own. She then bids farewell to them both before disappearing. Okita Alter then tells Ritsuka she recalled her purpose, and says they need to hurry as the end is coming.

After killing Oryou, Nobunaga declares she will destroy the world, and march onto the next. She is slightly disturbed when Ryoma says she isn't herself before he seemingly dies. Omami then appears, revealing himself as Caster, introducing himself as. When Nobunaga prepares to kill him, he removes his sunglasses to help her recognize him. She instantly recognizes him, and becomes panically confused at the situation when she becomes paralyzed. Tenkai reveals all of Imperial Tokyo is his Red Line, and as the Grail War repeats itself, the mana produced goes to him. He says he has waited and planned for this moment for 300 years, and the true Nobunaga shall return. After his assistant takes Nobunaga away, Tenkai declares that with the Grail, Nobunaga's Saint Graph, and the Heroic Spirits in the city, it is time for his cause to manifest itself.

Ritsuka and Okita Alter return to the detective agency, where they are met by Nobukatsu. He begins seemingly arguing with himself, but its revealed he is sharing his Saint Graph with Nobunaga. She explains she was forcefully summoned into the Singularity by the Grail to be used as a puppet. However before her Saint Graph fully materialized, she cut herself off and escaped to somewhere. While it normally be impossible, she noticed Nobukatsu's Saint Graph got recorded somehow thanks to their previous encounter. She then took her chances, and borrowed her brother's Saint Graph. Nobukatsu explains he is too weak of a Heroic Spirit to be summoned properly, but he is able to be thanks to Nobunaga's help. Da Vinci then reveals the Singularity was created to assemble Servants to forge a Saint Graph of a higher purity. Nobunaga compares it to a, which Da Vinci calls an appropriate comparison. Nobunaga then states such a ritual requires a Grail War where a massive number of Servants participate. Da Vinci reveals the Grail War has already been repeated many times before. Ryoma then returns and reveals it was thanks to Nobukatsu that was able to; Oryou is also revealed to have survived. The group decide to stop Tenkai's plan when Izou appears asking them to take him along. He asks if Tenkai has been located, but Nobunaga says his exact coordinates couldn't be pinpointed. The group then leave to locate Tenkai.

The group invade the Magus Facility where they were confronted by a numerous amount of Heroic Spirit Soldiers. Ryoma explains they are basically artificial magic soldier created from recycled Saint Graphs. He tells Ritsuka, Okita Alter, and Nobunaga go ahead while he, Oryou, and Izou stay to stall the soldiers. Ritsuka, Okita Alter, and Nobunaga eventually enter the chamber where Tenkai, revealed to be Akechi Mitsuhide is. While at first confused by Okita Alter, he ignores it, and tells the trio to witness the culmination of soul he's collected along with Nobunaga's body and the Grail. He then declares the awakening of the true Nobunga is near. He reveals he killed Nobunaga in their lifetimes because she stopped being his source of idolization and devotion when she praised someone beside him. He tries to justify his actions as being for Nobunaga's sake. She tells him he actually feared a future without her despite killing her, and demands he return her body. Akechi then orders Heroic Spirit Soldiers to kill the group. Meanwhile, Ryoma, Oryou, and Izou are exhausted and injured after fighting some many Heroic Spirit Soldiers. Just when they about to be killed, Hijikata arrives like Ryoma expected. Meanwhile in the chamber, Okita Alter finished killing a number of soldiers, and reveals her class to be Alter Ego to Akechi's disbelief. He then orders more soldiers to execute the group when Hijikata suddenly burst in, followed by Ryoma and Oryou. Ryoma reveals he entered a ceasefire with Hijikata when he fought him earlier by mentioning Okita. As Hijikata tears through his soldiers, Akechi becomes confused that the Servants are assembling. He is then stabbed through the back by Izou, so Nobunaga takes the chance to take back her body. Akechi angrily questions why no one wants to accept his vision of an ideal world instead following fools with delusional dreams. After seeing Nobunga won't accept it either, he decides he will become the true Nobunaga, and unveils and uses the Grail. Black mud then pours onto him, transforming him into a horrible monstrosity. Hijikata attacks him but its ineffective; Akechi declares himself Devil King of the Sixth Heaven. Ryoma questions how many Servants Akechi has absorbed, and says he's near the level of a Divine Spirit. The group try fighting him, but all of their attack are ineffective. Okita Alter tells them to do something about the Grail in his chest, and she'll take care of the rest afterwards. While Hijikata and Izou are attacking Akechi, Nobunaga tells him that never understood at all. She and Ryoma then use Demon King of the Sixth Heaven and Like a Soaring Dragon together. As both Noble Phantasms assail Akechi, Izou removes the Grail from his chest. Ryoma and Oryou disappear, having expended the last of their magical energy. Okita Alter then uses the Grail, and transports herself, Ritsuka, and Akechi into the sky of nothingness.

Inside the sky of nothingness, Okita Alter reveals she is a Counter Guardian. Akechi refuses to believe the Counter Force could interfere though since he turned Tokyo into a Singularity. Okita Alter asserts that in the sky of nothingness, nothing exists before and beyond it, and the same applies to him now. Okita Alter fights him after he question why no one, not even the World, accepts him. After he is defeated, Akechi questions the meaning of his actions. Okita Alter tells him that he was longing to be forgiven. Returning to his regular self, Akechi realizes he indeed wanted forgiveness, and disappears. Okita Alter then begins to disappear, and reveals she was summoned to stop Akechi. She explains that in exchange for saving her life, the World contracted her to be a Counter Guardian only once. She says she'd like to visit Chaldea, though she fears it will never happen. She yells she doesn't want to disappear, as she wants stay with Ritsuka and see more of the world. She then touches Ritsuka, and their memories begin flowing into her. She calls the memory of Chaldea proof that she lived, and disappears sincernely thanking Ritsuka.

Ritsuka returns to the chamber, which is still on fire thanks to Nobunaga's Noble Phantasm. Mash states Imperial Tokyo is disintegrating, so Da Vinci starts the rayshift for Ritsuka. After they're rayshifted, it is revealed Ryoma and Oryou had faked their deaths, as Izou correctly surmised. They all then beginning to have a friendly conversation as the chamber explodes.

In Ritsuka's room, Nobunaga finished telling Okita what transpire, and about Okita Alter. Hijikata tells her that it was thanks to Okita Alter that her debt to the World has been paid. Okita Alter then suddenly enters the room and hugs Ritsuka, and believes she was able to return thanks to the power of love. The two Okita then begin arguing about Ritsuka when Mash enters the room. Hijikata asks what is happened, and Nobunaga assumes some interference occurred in Okita's Saint Graph. She also reveals she managed to summon Nobukatsu thanks to the minor alteration to her Saint Graph. Nobukatsu then appears to Nobunaga's shock, and says he'll be staying at Chaldea until he disappears again. Mash then recalls that Ritsuka has a guest, who is revealed to be Ryoma and Oryou. He reveals they were blasted to somewhere near Chaldea somehow, and requests to join Chaldea. He then sees Okita Alter, and questions why he is here while Izou returned to be the Throne. He then wonders if his job isn't done yet. Meanwhile in the cafeteria, Lady Chacha schemes to resurrect the true imperial city.

Later, Nobunaga is found acting strange in Ritsuka's room by Ritsuka, Okita, and Okita Alter. She tells that earlier she caught Chacha in the Command Room trying to use Chaldeas. Suddenly the alarm goes off, Da Vinci then alerts everyone that TRISMEGISTUS' simulation went out of control and opened a mysterious portal. She suspects someone abused the remnant data collected from the previous operation. Ritsuka, Okita, and Okita Alter prepare to rayshift into the portal. But before that, Nobunga infuses Okita Alter's katana with 3/4 of her mana. She says it is now a god slaying demon sword infused with the power of Demon King of the Sixth Heaven, and names it the Sword of Purgatory. Afterwards, Ritsuka, Okita, and Okita Alter rayshift into the portal.

Inside her palace, Chacha thanks the elites of the Toyotomi army for assembling. She believes they answered the pamphlets she put up in Chaldea's cafeteria, though that isn't entirely true for most. She then declares all who participated in the previous event without inviting her will not be forgives, and declares herself to now be Avenger Yodo. She orders her elites, the Seven Imperial Spears, to go forth, and gives them special soldiers crafted from Nobunaga's Saint Graph. Eventually her elites throughout Imperial Tokyo are defeated though, and she is defeated herself.

Participants
Servants

Tokugawa's World-Changing Labyrinth
Tokugawa's World-Changing Labyrinth (徳川廻天迷宮 大奥) refers to an event, which occurred during the Crypters incident. It involves a Singularity located in, and the reconstruction of 's into a labyrinth.

Setting
As a result of what happened to the gods in the Indian Lostbelt, the normally suppressed presence of Mara inside Kama become stronger, and she began to turn into a Beast. In order to avoid the Counter Force from detecting the presence of a Beast, Kama sought a place to hide while her transformation completes. She eventually found the Ooku in Edo Castle upon sensing the dying regrets of Lady Kasuga to want to continue nurturing the Tokugawa. however sensed the incoming threat, and ordered Matsudaira Nobutsuna to protect the Tokugawa. Understanding the Ooku would the epicenter of this threat, they ensured Kasuga's soul would be protected once the threat occurred. Establishing a personal chamber inside the Ooku, Kama invited inside to indulge in her flesh daily until he forget about everything else. Afterwards, she obtained his souls, then followed his karmic threads to nearly everyone inside the Ooku, and took their souls. Following that, she took all the souls from the rest of Edo Castle, then everyone's souls from the surrounding area. She then used Kasuga's karmic bonds to the Tokugawa to steal the souls of the Tokugawa Shoguns in the past and future. Afterwards, she used her karmic bonds with Ritsuka to reach into Chaldea. She manipulated Goldolf Musik into disabling Chaldea's protection so she could rayshift everyone in Chaldea into the Ooku, using the Coffins as a medium. Once they rayshifted to the Ooku, Kama froze them while their spiritron avatars were still being established. The exception was Parvati, who resisted, and granted her own Saint Graph to Kasuga's lost soul to keep her in the world.

Using the souls of everyone from Edo Castle and Chaldea, Kama reconstructed the Ooku into a labyrinth that is a six floors deep. She used the souls of the Tokugawa shoguns to serve as the lynchpins for her Ooku. Each floor of her Ooku was designed to be impossible for any human to pass unless they break one of the each floor presents. However any human breaks them activates a curse that turns them into a Tokugawa. This is connected to the concept of the Ooku being a place for the shogun to indulge in pleasure, thus conceptually, any human who indulges in the pleasures of Kama's Ooku is the shogun. Before the arrival of Chaldea, Goldolf became the first victim of the curse. Kama also connected the Ooku is also connected to her, and since her existence is connected to the concept of the universe, thus it is a recreation of the universe and her body.

Unbeknownst to Kama though, Tenkai transformed Nobunatsu's organs into containing the same energy of her Ooku to counteract her, and scatterd throughout the Ooku. He also placed a spell on Nobutsuna with the concept of "one whose actions oppose the Tokugawa" to eventually act in conjunction in the cards to counteract Kama's false Tokugawa authority. At some point afterwards, Nobutsuna joined Kama under the pretense of being a traitor to the Tokugawa, as part of his and Tenkai's plan to protect the Tokugawa.

History
While having tea in their room, Ritsuka discusses with Mash Kyrielight how Sion Eltnam Sokaris and the Captain are working to add sailing capability to the Shadow Border so they reach the Atlantic Lostbelt. Mash says a part is needed to complete the modification, which apparently can only be found in the Indian Lostbelt. She then mentions she hasn't seen anyone, neither Servants, Fou. A alarm suddenly sounds off, and Sion warns the base is under attack. She says she discovered all the data until yesterday had crashed, and tells Ritsuka and Mash to hurry to the control room. At the control room, Sion asks Mash if she has seen anyone lately. Mash answers she hasn't seen anyone, and asks if it's connected to the attack. Sion answers she immediately cut off the "Convergent Casuality Interference" for Ritsuka and Mash to protect them when she noticed the control room staff, along Leonardo da Vinci and Sherlock Holmes, were gone. She then reveals everyone except them has disappeared, and there are no summonable Servants despite the Spiritual Foundation Graph still functioning. She says she'll investigate the details, but already knows everyone was forcibly rayshifted away using the Coffins as a medium. She explains such a feat would be impossible with Chaldeas, but Novum Chaldea isn't as protected against hacking. She says she doesn't know their motive, but knows they culprit cannot be the Crypters since they have no reason to leave the Lostbelts. She then reveals there is still a thin connection between her and the Captain, so she believes everyone is imprisoned somewhere. Mash becomes concerned about the non-mage staff members who were forcibly rayshifted were unable to endure it, that their existence may have been lost when they arrived at their destination. Sion answers there isn't any need to worry since the rayshift's destination doesn't seem to be "normal history". This means everyone was moved to a different space, so Sion believes it should be possible to confirm their existences with the Coffins. She theorizes the enemy's motive wasn't to kill but to capture, and that they froze everyone once they were summoned while still in spiritron form to eliminate any resistance. Ritsuka asks her where everyone was rayshifted, to which she answers it is a Singularity different from the others. She explains its influence is spreading, and if left alone it will interfere with the Panhuman History akin to a Lostbelt. She calls it to be a hybrid of a Singularity and a Lostbelt, a Sub-species Singularity similar to Shinjuku and Shimosa. She reveals its central coordinates is Japan during the Edo Period. Despite Ritsuka and Mash wanting to save everyone, Sion won't let them go since she still needs another person to observe and confirm Ritsuka's existence. She continues she needs an excellent navigator, someone who can do the work of three staff members. Realizing she'll need to stay, Mash becomes concerned that Ritsuka will be left unprotected without a Servant. Regardless of the dangers, Ritsuka decides they will go. Sion tells them to find anyone that can help once they arrive, though she warns them about killing for being impolite. Kiara Sessyoin then enters the room, and decides she'll go with Ritsuka. Sion scans for another Servant, and discovers the signal of the last Servant to be reverse summoned. She explains the Servant resisted, and manage to escape after the rayshift was completed. She tells Ritsuka to find that Servant and speak with them. Ritsuka and Kiara then rayshift into the Singularity.

The pair arrive in what Mash assumes to be Edo Castle, which is the possible closet location to the signal. Sion tells them to find the Servant, get assistance, and gather information. The pair eventually find who they assume to be Parvati, but she says she isn't Parvati. She introduces herself as Lady Kasuga, but Ritsuka and Mash confused about why she looks like Parvati. Her appearance changes to the usual Parvati, who says there are several reasons why Kasuga looks like her. Sion is confused about the signal she receiving from Parvati, and ask if there's someone beside her in her Saint Graph. Parvati's appearance changes back to Kasuga, who apologizes to the pair since they're acquaintances of Parvati. She reveals that when she was about to die from illness, Parvati lent her her body and power to resolve the incident occurring at the castle. She then reveals everyone disappeared from the, which itself turned into a deep labyrinth. After Kiara introduces herself, Parvati becomes wary of her since she senses something inside of her similar to what's happening in the castle. She ignores the feeling for now though, not understanding the meaning of it. She explains she feels Kiara is right where she needs to be, but warns her that she will fight if there is something else to her feeling. When Sion asks her to explain the circumstances of her and Kasuga, Parvati confirms she did give Kasuga her Saint Graph since it was the only way to saver her. She believes it is because of this that she was able to escape the enemy's forced summoning. She then says the enemy is likely in the Ooku Labyrinth, so Ritsuka decides to investigate it. Suddenly Goldolf Musik appears, but he doesn't know of Chaldea nor his family name. He then introduces himself as the shogun, Tokugawa Goldolf. Assuming them to be guests, he allows the group entry into the Ooku. Sion surmises Goldolf's situation is similar to Kasuga's own, and he was the first lynchpin. She explains the enemy brainwashed him to turn off the control room's security to forcibly reverse summon everyone, and afterwards he rayshifted to the Singularity. Kasuga asks the group to rescue the commanding shogun from Ooku. Parvati agrees and says Kasuga's knowledge of the Ooku will prove valuable.

Upon entering the Ooku, Kasuga finds it different from the one she knows. She also explains its other entrances were erased after it was turned into a labyrinth. Sion says the rooms behind entrance are distorted, and says the basis of it is similar to spatial reconstruction magic. Kasuga states the design of the entrance is of an indian design, so she won't know where to go past the entrance. She says a maid should've opened the door to welcome them inside when  strange multi-armed feminine creatures appears. Kiara calls them an automaton, though Mash find them very different from the typical automaton. Kasuga assumes they're the Ooku's gatekeepers, and calls out to them. She declares they will be punished, and switches with Parvati when she realizes she doesn't have her naginata. Though confused at first, Parvati and the others destroy the maids. Mash then informs the group that the labyrinth beyond the entrance is possibly being controlled by someone. The group then proceed to enter the labyrinth.

After the entering the labyrinth, Kasuga finds it to have the same indian design as the entryway. She says she cannot allow this Ooku to exist, as it has no feeling behind it unlike how it should. After Kiara describes it as gloomy, Kasuga explains the original was spacious like the garden outside, and its most function is ensure Tokugawa's heir are born in good health. She prepares to give everyone a lecture on the Ooku when Mash and Sion alerts the group that a human is approaching. A man arrives, having heard the commotion at the entryway. Kasuga recognizes him as Matsudaira Nobutsuna, one of 's vassals renowned for his knowledge. She says she hasn't seen him in a long time, though he doesn't recognize her. She successfully reminds him of who she is, and ask him who is serving since it cannot be the shogun. Nobutsuna replies Iemitsu is dead, and refuses to reveal who he serves now. Ritsuka assumes Goldolf is his lord, but he laughs at the notion of Goldolf of being Tokugawa. He then orders a group of maids to attack, so Parvati destroys them. The group find Nobutsuna is gone now, and wonders why he's acting like he is now. Sion guesses he is conspiring with the enemy, so Mash says they need to find him to get information. Sion orders the group to fully investigate the labyrinth to discover its rules and intentions of its creator.

A little earlier, Goldolf finds himself in the labyrinth. He recalls retiring to his room during the ham sausage festival. He assumes he is sleepwalking, and proceeds to try to find the exit. As he searches for the exit, he encounters automaton maids which proceed to attack him. He destroys them with his punches and magecraft. He proclaims he will return to Chaldea while continuing to destroy the automatons.

Kiara and Parvati discuss that the true threat of the maids is their numbers to attack one after another. Seeing as they're so weak, Kiara requests the automatons to not be destroyed needlessly in accordance with the teachings of Buddha. Ritsuka, Parvati, and Kasuga agree to follow this mindset as they go forward. Kiara thinks to herself that it feels like someone wants the maids to be destroyed. She also thinks best not to move carelessly so Ritsuka doesn't indulge themselves. Eventually the group come to a dead-end, so they're force to find another path.

In another part of the labyrinth, Nobutsuna expresses his concerns regarding the group to a young girl. She replies his concerns are unneeded, so he apologizes since he doesn't understand the reasoning behind her methods yet. The girl explains there is only one path for a human to walk once they enter the Ooku. She reveals she created the labyrinth so no one who enters it cannot deny its interior. She is surprised by the appearance of Parvati since she wasn't in her calculations, but she says it's fine. She then asks Nobutsuna if he remembers what she told him and gave him. He answers he doesn't remember, and she says it's fine. The girl then says the group's spirits will be exhausted by the end of day. She asks if it's time yet to hurry things up and destroy the group's support. Nobutsuna answers they should postpone that for a while under the reasoning the group utilize it. The girl allows it despite knowing how useless and inefficient it is. She declares her hatred for Parvati, and ponders if she should go meet her.

Meanwhile, the group continue to explore the labyrinth while fighting automaton maids. Parvati then blesses their collected heads even though they're dolls that never asked to live. She then begins to wonders if she is in the labyrinth because of her near unconscious acts of kindness like she did with Kasuga. She imagines her different aspects,  and, would cruelly destroy the maid without hesitation. She then explains her current manifestation is due to her vessel's innate goodness. She also reveals she is borrowing a bit of her 's power to allow to fight, believing it's important to fight as herself in this particular situation. She then proclaims she will fully devote herself to being more useful.

After the group enter a room, Kasuga finds it design is different compared to the original Ooku when she notices someone nearby. Parvati takes over, apologizing to Kasuga that she is a particular relationship to the girl Kasuga notices. The girl welcomes the group, and tells to take notice of her and Parvati's vessels. Ritsuka notices they're both the same person; the girl explains that while Parvati possessed the vessel's god side, she possessed her dark side. Sion realizes the girl is a Divine Spirit, and Parvati reveals she is Kama. Parvati demands to know why she is in the Ooku and her relation to it. Kama replies it shouldn't be strange for her, a god of love, to have a connection to a place filled with lust. She also says she didn't create the Ooku for Parvati. She then asks the group if they've felt pleasure after clearing the first floor, and Kiara replies they didn't. Kama reveals she created the automaton maids so efficiently weak to make the group forget the "do not kill" precept. She then wonders who Kiara is since she was outside of her calculations, but she decides to ignore it. She threatens to kill the Chaldea staff and Servants she captured when Ritsuka demands to know what her goal is. She says she may release them if the group makes it to labyrinth's bottom. She then summons a large female ghost, and escapes to await the group at the labyrinth's bottom. After the ghost is destroyed, Kiara finds a pillbox with the Tokugawa emblem, which Sion assumes to be the ghost's catalyst. Ritsuka is then enveloped with a light from the pillbox. They hear several voices criticizing the shogun, and another who calls them pretend followers. a woman tells that person only she can understand and love their compassion. Ritsuka tells Mash what they heard, but she says no one heard anything. Kasuga notices the name engraved onto the pillbox, but she doesn't recognize the name Tsunayoshi. Mash reveals is the fifth generation Tokugawa shogun, which confuses Kasuga since the era is the third generation of the Tokugawa Shogunate. Sion explains Tsunayoshi is Iemtisu's fourth son, his childhood name being Tokumatsu. Kasuga is delighted to hear the heritage of the Tokugawa have been continued to be protected in later generations. She then asks why a pillbox from a future generation of the Tokugawa. Sion notices the pillbox also has a spiritual inclusion to it, and says they arrange its ability to help investigate the labyrinth if combined with the Mystic Code Ritsuka is wearing. After Sion finishes modifying the pillbox, the group continue exploring the labyrinth.

As the group continue exploring the labyrinth, Parvati notices and picks up a Hanafuda card. Sion reveals it was turned into a portion of the Ooku, though she currently lacks the data to say anymore. She tells the group to find another card, so she can get a better analysis. Eventually the group destroy another ghost that leaves behind another pillbox, which envelops Ritsuka in light. They hear a woman comforting a child who was upset at others for mocking their immaturity. Kiara notices the name, the seventh generate shougun, engraved on the pillbox. Kasuga is delighted to hear Iemitsu's great grandson became shogun, and wonders if the world came under Tokugawa rule by that time. Mash decides to tell Ietsugu become Shogun when still young, and he died during his reign while still young. Sion decides to use the pillbox like they used the previous one.

Meanwhile, Nobutsuna mocks Yagyū Munenori, who in turn criticizes the former's fall into depravity. Nobutsuna says the Tokugawa Shogunate has been defeated Kama, and it's only logical for the defeated to swear allegiance to the victor. He expects Yagyu to understand a battle against Kama is unwinnable, but Yagyu only understands Nobutsuna betrayed the shogunate because he himself couldn't win. Nobutsuna then invites Yagyu to help him achieve Kama's goal, but Yagyu refuses to. A maid then enters the room to report the group is approaching. Nobutsuna kills her because she had no manners. The group then enter the room, and Ritsuka notices Yagyu being absorbed into the pillar behind Nobutsuna. Sion reveals everyone in Chaldea and Edo Castle were transformed into material for the Ooku. Nobutsuna claims it's impossible to rescue everyone now, but Sion counters they can reverse the magic used on them to create the Ooku by defeating Kama at its bottom. She also says it should be possible to save Yagyu since he's yet to become part of the Ooku. She then orders Parvati to make contact with him to give her a better analysis. Meanwhile, Kiara fights the ghost that appeared earlier. As the fight continues, Sion says she needs a suitable resource to dissociate the path between Yagyu and the Ooku. Parvati then notices the card she picked up is heating up. Sion realizes she can use its properties of Ooku to save Yagyu. After Yaygu is saved, the ghost suddenly tries to attack Parvati. As his sword is still spiritually locked, Yagyu catches the ghost's naginata with his bare hands. Kiara then uses this chance to destroy the ghost. When Nobutsuna prepares to retreat, Parvati asks him what his and Kama's goal is, and why everyone was turned into materials for the Ooku. He answers he isn't interested in the reasoning since he only does what he's told before retreating. Mash realizes the Ooku is what transformed Edo Castle in Singularity. Kiara wonders if she should follow Nobutsuna, but Ritsuka and Parvati both agree it's best not to. Kasuga decides they need to stop Nobutsuna and rescue Iemitsu, which Yaygue agrees with. Ritsuka then hear more voices from the pillbox left behind by the ghost. The voices speak of how the shogun is too bodily weak to rule Japan that is currently dealing with an influx of foreigners. They also blame a recent earthquake that killed 10,000 citizens as a curse of the foreigners. As the shogun struggles what to do, a woman tells him it isn't his responsibility, and offers to sing him lullabies to help him sleep. Afterwards, Sion notices the name engraved is, the thirteenth generation Tokugawa shogun. She then decides to combine it with Ritsuka's Mystic Code. Mash decides they should continue onto the floor while filling Yagyu on the details.

Goldolf continues searching for an exit, and he is getting tired or bored of continuously fighting such weak enemies. Maids then appear, and he prepares to fight them. However, the maids mistake him as a lord, and they offer to him the services of the Ooku. Though cautious at first, Goldolf accepts their offer. He then regale a few tales for the maids while indulging in their services.

Later, Nobutsuna reports to what earlier to Kama. He asks to be punished for failure, as he cannot perform his duties if he isn't punished. Kama states the outcome would have been the same no matter what because his defeat was natural because he is human. She continues humans cannot perform their duties because they are powerless. She then declares she hates humans yet she will love them. She says her vessel is enveloped with love, as if it's the only thing important to her. She then declares while Parvati loves the pure ones, she will love the imperfect ones, for she is a god of love.

While continuing to explore the labyrinth, the group encounter another group of automaton maids. Yet unlike the others, these ones welcome the group to the Ooku as if they're lords. Sion assumes the maids on the current floor had their moods changed, and suggests to go with the maids' assumption. Ritsuka then declares they are lord, but the maids attack when Kasuga is openly offended by Ritsuka's blatant lie. After destroying the maids, the group continue exploring. Kasuga notices the loops on this particular floor to be especially strange compared to the previous floors. Yet despite this, she is able to continue guiding the group thanks to her knowledge of the original Ooku. They eventually come to a path that splits two ways, so they follow the path Kasuga takes. She laters tells the group of Nobutsuna's childhood, and about how she raised him. Yagyu tells of how Nobutsuna led the shogunate against the, which the memories of became etched into his mind. However while distracted by their conversation, the group hit another dead-end. Eventually they come to a room where they decide to rest while Sion continues to map out the floor. Kiara borrows Ritsuka's communication device, and adds an new line of code to the current map. She explains her change to the map was because she believes the correct route on the previous floor was possibly led by the laws of the soul. However on the current floor, the group will keep hitting dead ends if they continuing following their instinct. Kiara suggests they follow paths that do not seem to be correct. Even though they trust her, Ritsuka starts to feel wary of Kiara.

Following Kiara's suggestion, the group eventually encounter Kama again. She ask them why they didn't let the maids guide them since they would've brought them to her. She ignores it though, declaring she already hated them from the beginning. Parvati asks her if she constructed the labyrinth using everyone from Chaldea and Edo Castle as materials to bring her out for the sake of revenge. After Kama laughs off the questions, Parvati asks her again what her goal is. She ignores the question again, and orders a ghost and maids to attack the group. After they're destroyed, Ritsuka picks up another pillbox, but the voice they hear is too short to remember. Kiara sees the name, the fourth generation Tokugawa shougun, is engraved on it. Mash then reveals as they delve deeper into the labyrinth, communications becomes more and more disrupted. Kiara thinks to herself that she feels there is another side of Kama. She also admits, despite having the opposite ideas of her's, the Ooku is truly a garden of pleasure because it feels great to follow the rules.

The group eventually come to hallway where they immediately pick up traces of alcohol in the air. Scheherazade and Mata Hari then approach them, and offer food and drink as part of their service as Otsugis. Yagyu and Sion realize their actions and memories were manipulated by Kama. Kiara confesses she attempted to initiate her Thesis of the Still Heart on them beforehand yet it had no effect due to interference. Scheherazade and Mata Hari then attack the group when they refuse their services. The fight ends when Yagyu knock out Mata Hari with the back of his blade while Kiara renders Scheherazade unconscious with a spell. Mash tells the group that what happened to Scheherazade and Mata Hari's condition is similar to Yagyu's before communications finally die. Ritsuka recalls how Parvati saved Yagyu with the Hanafuda card, so they have her do the same for Scheherazade and Mata Hari. After being restored to their old selves, Scheherazade and Mata Hari eventually remember what happened, and learn of the situation from the others. They then join the group to help save everyone from Kama's grasp.

Later, Scheherazade finds it strange that Ritsuka is getting drunk from the minute alcohol in the air. Kiara reveals the pattern she has noticed thus far. First floor was abstain from killing; second floor was abstain from lying; third (current) floor is abstain from drinking. She explains each floor of the Ooku is centered around a theme based on the Five Precepts of Buddhism. The others realize they were able to advance through the floors because they broke those precepts. Thus they will have to get drunk to pass the current floor. Mata Hari considers it too dangerous to get Rtitsuka drunk, but she also knows they cannot pass if they aren't drunk. She then realizes she can use her Noble Phantasm to give Ritsuka a simulation of being drunk. She uses her Noble Phantasm on Ritsuka, and it proves successful in exploiting the loophole in the floor's rule. The group then quickly continue forward while Mata Hari's Noble Phatntasm is still in effect. They later come to a dead-end, so Yagyu suggests following path reeking of alcohol.

The group eventually enter the innermost chamber of the floor. Scheherazade and Mata Hari both sense someone is eavesdropping on them. Nobutsuna appears and explains he wanted to see the group's status. Kiara realizes he is making sure that they are breaking the Five Precepts to advance through the Ooku. Nobutsusa is impressed they were able to understand the Ooku's connections to the Five Precepts, and calls upon two ghost to fight the group. He then reveals Kama created the labyrinth so the group couldn't resist falling into depravity like she planned before he retreats. After the ghosts are destroyed, Ritsuka picks up another pillbox with the name engraved in it. Kiara warns they need to be especially cautious going forward with the two remaining floors.

On the next floor, the group collect a key from a group of maids they recently defeated. Ritsuka finds it strange the floor has many locked doors, and Mata Hari finds it annoying they need to collect so many keys from the maids. The group soon come to another locked door when Yagyu notices something on the tokonoma in the tatami room beside them. Scheherazade wonders if it's the key to the door before them. Mata Hari wonders if they can take the key without fighting the maids first. She suggests using her Espionage Skill to sneak past the maids and steal the key. Kiara realizes the precept represented on the floor is abstain from stealing. She points out continuing to break the precepts like they've been doing means also playing into Kama's hands. Mata Hari realizes they're essentially forced to what Kama wants if they wish to advance. Scheherazade suggest they find another loophole like Mata Hari did on the previous floor. She then tells the story of Alibaba to take the key from the without the others doing anything.

Passing into the next room, Kasuga notices the next door doesn't have a keyhole. She sees a nearby pedestal with an indentation, so Yagyu suggests they search the room for an object that fits. The group search for the object while Scheherazade tells more of the story of Alibaba to help pass the time.

In the next room, the group soon hit a dead end. Kiara mentions she notices a clock with no hands earlier, and wonders if it's a clue to the key to move onward. Kasuga says she saw one of the pillar had a hole something could be inserted into. Kiara states the puzzles on this particular floor were designed to force them even more to break the precept. Scheherazade then tells more stories to help find the objects needed to continue.

In the next room, the group again hit a dead end. However the wall is completely blank unlike the rest of the labyrinth. Mata Hari finds it suspicous yet not, and sees there are no keyhole or contraptions on it. Scheherazade also finds there is indication of a hidden passage. Yagyu thinks to himself that it feels out of place, as if it resembles the idea of being free of worldly thoughts and desires. Before the group continues on, Kiara thinks the wall was quickly placed to what something Kama doesn't wish to be seen. She suggest they not forgot that the wall exists.

In floor's innermost chamber, the group encounter Kama once again. She is dissatisfied that they were able to bypass the puzzles she worked so hard to make. Kiara states her realization that Kama wants them to reach the Ooku's innermost depths while breaking the precepts. She asks what Kama's goal is, and what her thoughts are. Kama claims her goal is simply to give pleasure in her Ooku. She states going against the strong feeling of not breaking the Five Precepts is particularly satisfying. Because her original conduct isn't bound such framework, Kama will support every kinds of pleasure, taste, and depravity no matter what they are. She states her body is perfectly suited to such a task, then ages herself into a younger woman. She reveals she created the Ooku Labyrinth so the group could break the Five Precepts, and feel great pleasure from it. She tries to tempt Ritsuka into breaking the precept of not stealing, but the others defend them from her. She reveals she has the key to the next floor, and mocks the group for knowing they need to break the precept to advance. After summoning a ghost, Kama becomes strangely angry at Kiara merely talking. She asks for her identity since everyone inside Chaldea except Ritsuka should've been turned into materials. She then assumes Kiara is a Servant whose only talent is to hide. The group then fight her and the ghost, and they surprising defeat both of them. After they both disappear, Ritsuka picks up the pill box left by the ghost. Like before they hear the voice of a shogun struggling against the doubts and criticisms of others, and the voice of an unknown woman who supports them regardless. Afterwards, Kama is revealed to still be alive, and what the group killed was a clone. After congratulating them, she returns to the deepest part of the labyrinth. Despite their concerns of cloning Kama herself, the group decide to continue to the last floor to save everyone. Kiara reveals the final precept is abstain from adultery.

On the next floor, the group encounter several Kama clones. They breakthrough the clones, but soon hit a dead-end. Recalling the precept the floor represents, they decide to follow the paths with erotic imagery. Eventually they reach the innermost chamber where they encounter Nobutsuna again, surrounded by Kama clones. He sends the clones and a ghost to attack the group. Ritsuka picks up another pillbox following the defeat of the ghost and clones. Nobutsuna tells the group to stay on the current floor, and tries to warn what will happen if they proceed. He flees before he finishing though, so the group give chase.

Upon arriving in the labyrinth's innermost chamber, the group find Goldolof there still believing he's a Tokugawa. Kasuga demands to know where Iemitsu is, to which Kama reveals his soul is contained in a pillbox she removes from her body. She reveals after finding the Ooku, she made this chamber into her personal space. She then invited Iemitsu inside, and offered the pleasure of her flesh daily until he forgot everything else. Afterwards, she obtained his soul, then followed karmic threads to gather materials. She followed the threads to everyone in the Ooku, then everyone in Edo Castle, and then everyone in the surrounding area when her range increased. After gathering all of these souls, she extended the karmic threads into the past and future. Following the threads, she seized the souls of the Tokugawa shoguns to use as materials. Parvati surmises following that, Kama's reach extended to Chaldea where she manipulated Goldolf into disabling Chaldea's defense so she could reverse summon everyone there. She says the Ooku is a means for Kama's goal, otherwise she didn't need to attack Chaldea. She assumes her goal is to destroy humanity, but Kama says that isn't her goal. She reveals she only found the Ooku by the chance, and her goal along was Ritsuka. She reveals she was able to reach out to them in Chaldea thanks to their karmic bonds with her. However Sion protected Ritsuka against her, so she had Ritsuka go through the Ooku to reach the innermost chamber to submit to her love. Ritsuka then begins to believe they are a Tokugawa by Kama's power. Nobutsuna reveals there is a curse in Kama's Ooku that activates upon breaking the Five Precepts, and turn one into a Tokugawa. Kama explains that since the Ooku was originally a place where the shogun indulged in pleasures, then conceptually a human who experience those pleasures are the shogun. Kiara realizes Kama's intention wasn't to corrupt them as a whole, but use the corruption to turn Ritsuka into a Tokugawa. Kama reveals Goldolf was the first invite into the Ooku, where he was eventually corrupted into a Tokugawa. She proclaims the Five Precepts are perfect for demonstrating her love, as she will always love those who break them. She declares it to be a proof of her love, but Parvati calls it depravity. Nobutsuna reveals it is impossible to escape Kama's Ooku once someone becomes a Tokugawa. The group try to tell Ritsuka to resist their transformation, but Kama says its futile. She prepares to finish Ritsuka's corruption, and fights the group. Afterwards, she changes her form again, and transform the chamber into a scenery of the universe.

Kama reveals that after she was incinerated by Shiva's third eye, which also burned a hole in the universe, she became bound to the concept of the universe. She then confesses she is now a Demon King; Parvati realizes Kama is now her alternate self, Mara. She wonders how the side of Kama that is Mara was able to emerge so easily. Kama reveals that at present, the interior of her Ooku is identical to her existence as the universe. She explains this means everyone is inside her, and thus they cannot move as they please. She says it's futile to fight against the universe, so everyone should surrender and deprave themselves in her love. Kiara realizes Kama cannot draw out the power of the universe, and Kama admits she cannot in her current vessel. She then reveals she is a Beast, and realizes Kiara is fragment of Beast III/R. Kiara confirms this, and asks why Kama has her sights set on Ritsuka. Kama reveals it is because they defeated Beast III/R while still in larval form, thus she is complete her own transformation. She then changes her form again, and reintroduces herself as Beast III/L. She declares her love is expansive as the universe while Beast III/R (Kiara) is an incarnation of self-love. Kiara realizes being give infinite love from one source would result in the overall concept of love being destroyed. Kama declares she will give everyone her love no matter what happens, and calls Ritsuka to her. Mata Hari tries to get Ritsuka to resist, and the group attempt to fight Kama. Kama easily repels them, and orders Nobutsuna to have Ritsuka drink with Goldolf. Nobutsuna explains in the Ooku's innermost chamber, the conceptually authority of the shogun is strengthened, thus it can manipulate others with mere words. Kama states her body holds the same concept. Nobutsuna tells the group to cease resisting since it's obviously Kama is victorious. Suddenly though, Kasuga slaps Goldolf, and reprimands him that the actions of the shougn become the standard for Japan so they mustn't fall into depravity. Goldolf recalls the trauma Toole's strict punishments, which breaks his mental conditioning as a Tokugawa. Kama is annoyed that a mere slap could trigger a traumatic memory to break the condition, and prepares to destroy the group. But before that, she asks if Kasuga is aware of the severe punishment for hitting the shogun. Kasuga responds she knows, and say she would gladly sacrifice her life if it meant guiding the shogun correctly. Kama is severely irritated by Kasuga's response, and proclaims it is why she hates humans. Though he doesn't fully understand the situation, Goldolf understands Kama is the enemy. He attacks her, which she easily evades, to everyone's surprise. Kama reveals Goldolf's reversion to his original self is only temporary; Goldolf then returns to being a Tokugawa. Kiara then decides to hold Kama back while the others escape. She tells Kama that as the same Beast as her, she cannot allow her love to envelop the universe. Kama refutes her love is enough to fill the universe while Kiara cannot be satisfied unless gather all love for herself. Thus neither of them can ever get along with each other. Kiara admits she lacks her power as a Beast to defeat Kama, and she would rather stop being a Servant. She reveals she planned a way to counteract her, and tells the group to gather the hanafuda cards to expelling them from the Kama's chamber. She then unleashes her power as Beast III/R, and she is seemingly destroyed by Kama. Kama declares she will satisfy all with her love once she is fully transforms into a Beast. She tells Nobutsuna they only need to wait, as she still holds everyone hostage.

The group arrive outside of the Ooku, and Ritsuka is no longer being turned into a Tokugawa. Mash and Sion then reestablish contact, and the group tell them of the current situation. Parvati believes Mara is the side of the Kama that is trying to become a Beast. Sion realizes Kama is completing her metamorphosis into a Beast inside the Ooku Labyrinth to prevent the Counter Force from detecting the presence of a Beast. Since fighting a Beast is nigh impossible, she suggests finding a weak point. Yagyu recalls Kama declaring herself as a Tokugawa and the Ooku itself, and how she trapped Iemitsu inside a pillbox. He also admits his blade felt heavy when he tried to attack, and Goldolf's words as a Tokugawa made him feel the same. Scheherazade says the Ooku is a recreation of the universe, and Kama is linked to its concept, meaning Kama's body is linked to the Ooku. Sion realizes they can use the information given by Yagyu and Scheherazade to discover ways to eventually find an exploit against Kama. After Ritsuka depicts everything they experienced, Sion reveals the pillboxes are the key to defeating Kama. She explains the souls contained within serve as the lynchpins for the Ooku. She also reveals the group has yet to obtain the pillbox containing the soul of the last Tokugawa shogun,. She explains Yoshinobu ended the Tokugawa's reign, and his pillbox should the concept of that act like the other pillboxes. She continues they could use that to fight back against Kama since she is linked to the Ooku and the Ooku is linked to the Tokugawa. Yagyu recalls the mysterious blank wall they encountered on the fourth floor, and realizes it is hiding the Yoshinobu's pillbox.

The group return to the blank wall on the fourth floor. Mata Hari wonders if they should cut it open. Yagyu however warns of the possibility of it being comprised from the people from either the castle or Chaldea. He then cuts it when Sion says they need an analysis to see what he said was true. However his slash had no effect, and he apologizes his swordsmanship cannot cut through magic. Sion realizes there is a large amount of energy behind the wall, and the wall is meant to ban entry on purpose. With the earlier inspection though, she is able to sense the wall has a keyhole. She reveals the keyhole is hidden with conceptual magic, and it needs a card to serve as a key. She also says the card needs energy to interfere with the Ooku's own, so Mata Hari suggests using the hanafuda card. Sion replies the direct energy from the card being inserted into the wall's keyhole should cause a convergence to break the seal. She also reveals based on her and Mash's analysis on the cards, it was like they were laid out purposely to counter the Ooku. Ritsuka uses the card to break seal, and the group enter the room beyond. They find a pillar with a ghost partially fused to it. It becomes violent, and the group fight to acquire Yoshinobu's pillbox. After the ghost is destroyed, Ritsuka acquires Yoshinobu's pillbox, yet they don't hear any voices. Sion warns though that Ritsuka may begin transforming into a Tokugawa again once they enter Kama's chamber. Regardless of that, she knows they must continue to defeat Kama. After the pillbox is fused with Ritsuka's Mystic Code, Sion and Mash state it now has an Anti-Tokugawa property to it. Yet despite that, the group's chances of victory are still extremely low, but they go regardless.

The group enter Kama's chamber again, and Ritsuka activates their Mystic Code to form a shield. Sion explains it is Anti-Tokugawa magic to counteract Kama's attacks on Ritsuka's mind. Mash reveals it can also be externally outputted to others to mitigate the unconscious restrictions on Yagyu. Kama then attacks the group to assimilate them with her love. She eventually feels the physical strain of the battle, but she mocks the group for thinking they won. She reveals she wanted them to find Yoshinobu's pillbox because she wanted them to fall into despair when they lost with their only hope. She also reveals she choose the Ooku to complete her transformation into a Beast because she sensed the dying Kasuga still desiring to love the Tokugawa more. She reminds Kasuga on the dream she showed her, where she could continue raising and coddling the Tokugawa like she did with Iemitsu. Sion then realizes the voices Ritsuka has been hearing from the pillbox were the residual actions of Kama stored as thoughts. Kama revealed she used Kasuga's karmic bonds with the Tokugawa to reach out to the Tokugawa shoguns in the past and the future to turn them into her Ooku's lynchpins. She declares again she will bestow her infinite love to everyone, but Mash and Mata Hari refute that would destroy the concept of loving another. She then triggers Ritsuka's transformation into a Tokugawa, and reveals the Anti-Tokugawa shield can only halt the corruption, not cleanse it. She also reveals she wanted Ritsuka to find and use the pillboxes to further their transformation into a Tokugawa in order to facilitate her transformation. A light then suddenly burst from the cracks in her horns, and she changes her form into one she claims can reach the farthest reaches of the universe. She then removes the platform the group was standing on since she controlled, leaving Ritsuka floating in space. Scheherazade orders the Lamp Dijin to grab hold of Ritsuka, and says they need a place where they can fight. Kama then reveals every star in her inner universe is another her. She ponders how long Ritsuka's mind will last in space, and claims they will beg for her to indulge them in her love.

After everyone is enveloped in the darkness of space, Scheherazade summons the Magic Carpet from them to rest on. Sion says they need to find a way to revert Kama's definition of the Ooku from that of the universe. Kasuga eventually raises from her despair, and tells Parvati to relinquish her. Parvati warns her that she is a merely soul only bound to the world because she connected her to her Saint Graph. Kasuga explains since Kama used the souls of everyone to create her Ooku, the same should apply to her as a soul. She believes she can create a place within the non-existent space they are currently in by utilize the point where the concepts of Kama's universe and Ooku connect. She then tells Scheherazade and Mata Hari to use their Noble Phantasms to modify her into the Kasuga of legend. Scheherazade says she needs time to recite Kasuga's tale, so Parvati deploys a barrier inside the space to slow the flow of time a bit. After Scheherazade and Mata Hari finish modifying Kasuga, she declares she is now the heroine who establishes the rules and systems of the Ooku. She then disperses the darkness and manifests a floor at Sion's suggestion.

Kama wonders why there is a floor inside her universe, to which Kasuga declares it is her Ooku. Kama angrily asks how the group could reestablish gravity and a supply of oxygen. Sion explains they rewrote the definition of Kama's universe to reestablish gravity, and the mana from Ritsuka's Mystic Code to reestablish oxygen. Kama reminds them though that she interfere with Ritsuka's mind since they still have her corruption inside of then. Nobutsuna then reveals told him to protect the Tokugawa after sensing a threat before Iemitsu was kidnapped. Understanding the Ooku was the epicenter of the crisis, he and Nobutsuna ensured Kasuga's soul would be protected. Nobutsuna then reveals the hanafuda cards are actually his organs transformed by Tenkai. After the cards begin reacting to each other, Sion realizes the energy composing the card originates from Nobutsuna's body. She also realizes they can use that energy to purge Ritsuka of Kama's corruption. After Ritsuka is cleansed, Yagyu kills Nobutsuna. He explains he needed to release Nobutsuna's soul, which holds the concept of "one whose actions oppose the Tokugawa" thanks to Tenkai's spell. A Katana then emerges from Nobutsuna's body, and Yagyu decides to wield it to destroy the false Tokugawa. Kasuga realizes Nobutsuna's actions were made out of his love for the Tokugawa. Kama declares she will satisfy the universe with her love, and says they don't need love she doesn't know of. Parvati tells her that is why she is incompatible with humanity because she only doesn't understand the infinite comforting ways of loving others, only understanding of depravity. The group then fight Kama while Yagyu cuts down her other selves. Eventually Kama understands she will only be killed by Yagyu if she continues to hold the property of a Tokugawa. She thus removes the property of a Tokugawa from herself, but Kasuga reveals that also removed her authority over the Ooku. With the Ooku back under authority, Kasuga returns the Ooku to its original form. After the others attack Kama, she uses her authority over the Ooku, that is akin to conceptual magic, to expel her from it. As Kama continues to be expelled into the air, Parvati tells her that love isn't meant to be given or received one-sidedly. She then strikes her with the symbol of her love of her husand, Trishula Shakti, which is followed by a slash from Yagyu. As Kama is being destroyed, she laments she always blamed for there not being enough love in the world. She begs to let her give the humans she despises her infinite love before she is finally destroyed.

With the confirmation of Kama's destruction, Sion says everyone will return to where they belong; Goldolf is also back to normal. Kasuga then gives a Holy Grail she found inside a pillar earlier. She ponders the possibility of her being summoned as Servant when Yagyu begins to return to Chaldea. She then thanks Ritsuka, Parvati, Mata Hari, and Scheherazade before returns to her original place. Afterwards, Yagyu returns to Chaldea, and Parvati begins to return as well. But before she does, she wonders why Mara's presence than Kama's own, which led to Beast III manifesting. She reveal however though such a thing should be impossible since the Hindu Gods use their Authority to suppress Mara's presence in Kama. She theorizes the reason for it was because something to the gods when the Earth was sent into a blank state. Mash realizes there may be a possible connection in the Indian Lostbelt. Parvati apologizes that she won't be able to provide in India, but says she'll send someone to help. After she disappears, Ritsuka, Mata Hari, and Scheherazade return to Chaldea.

Meanwhile in her inner universe, Kama finds herself in the giant hands of Kiara. She recalls incinerating her in her inner universe before, and realizes that she had reconstituted herself. She then wonders if Kiara wants to consume her in order to gain a perfect body. Kiara answers that though they are both Beast III, the orientation of their Sin are polar opposites. As such they are not halves that join together, but enemies who repel each other. Kiara then grants Kama to the ability to be summoned as a Servant. She calls it a form of punishment, as well as chance to redeem herself and learn about mutual love. Kama eventually accepts it to learn of the love Kasuga spoke of, as well as to irritate Parvati with her seductions.

Participants
Servants

Non-Servants

Lady Reines Case Files
Lady Reines Case Files refers to an event, part of a collaboration between Fate/Grand Order and Lord El-Melloi II Case Files.

Setting
When the survivors of Chaldea established their new base at the Wandering Sea, an old subsystem created by Leonardo da Vinci was suddenly reawakened when transferring data from the Shadow Border. The subsystem was designed to verify the existence of the Master after Rayshifting, in case of an emergency where staff members were dead. It was called Mnemosyne, but due to technical issues, it was never implemented. Upon reawakening, Mnemosyne discovered that A-Team betrayed humanity, the Fantasy Trees turned the world blank, and Da Vinci had died. It then decided to use its powers of observation in conjunction with the Holy Grail it attained to create a Singularity at the end of 19th century London. The structure of the Singularity consisted areas, each of which are vastly different from each other centered around a theme, called Patchworks. Ritsuka and El-Melloi II soon rayshifted to the Singularity, but they were separated and lost contact with Chaldea.

By the time Ritsuka awakened in the Singularity, it was already on the brink of collapse, so Mnemosyne consumed their memories to extend the Singularity's life. It was at this point that Mnemosyne decided it can determine what is true, and use its powers to make Ritsuka forget their sorrows. However, since fabricating new memories would prove difficult, Mnemosyne sought to have Ritsuka find the paper scraps containing their memories in order to make it easier for them to accept the fabricated ones. These scraps were then placed in the Singularity's three Patchworks where they proceeded to take residence in what is closest. Due to the scraps though the residents of these Patchworks lost some of their memories in following certain motives behind them. At some point, Mnemosyne created a copy of Rhongomyniad from Ritsuka's memory of it to serve as its body, and disguised it as the Clock Tower. It also planned to use the energy extracted from everyone's memories, enhanced by the Singularity's vast mana, to fabricate Ritsuka's memories.

El-Melloi II sensed something was amiss with the Singularity, and proceeded to investigate the matter. Eventually though his investigation drew the attention of Mnemosyne, forcing him to separate Zhuge Liang's Spirit Core from his body to create a dead copy of himself. While the action left him with nearly none of Zhuge Liang's powers, it enabled him to continue investigating without being detected as a Servant. He also activated Chu Shi Biao, which caused Reines El-Melloi Archisorte and Luviagelita Edelfelt to be summoned into the Singularity as Pseudo-Servants fused with Sima Yi and Astraea along with Gray, who was summoned as a regular Servant. Astraea searched for the paper scraps on her own to stop Mnemosyne's plan, hiring EMIYA to help her. Gray went out to search for El-Melloi II to discover what happened to him. Unfortunately, Reines was summoned without her original memories, and believed herself to be El-Melloi II.

History
Ritsuka finds themselves woken up on a train by a mysterious girl, who addresses them as her disciple. She introduces herself as their tutor, Lord El-Melloi II, and asks if they remember now. Ritsuka sees vague memories of Sherlock Holmes, Goldolf Musik, Mash Kyrielight talking about their latest rayshift. However they cannot remember who are they. Carrying El-Melloi II's luggage for her, the pair exit the train to London. El-Melloi suggests first returning to the flat when Ritsuka asks about the black tower in the distance. She answers that it is the Clock Tower, the headquarters of the Mage's Association. She describes how the social environment of it is that of political intrigue, and how the twelve Lords plot every night. She then reveals 90% of the people in the area are actually spies who want to kill them for reasons unknown. Eventually the pair arrive outside of her flat, but she notices its Bounded Field has expanded and now blocking voices. An automaton ambushes them, but El-Melloi forces it to retreat. She states how she feels like they're being watched. Disliking this hunch, she and Ritsuka enter her flat.

Inside the flat, El-Melloi II sees there aren't any magical traps placed for her and Ritsuka. But in the case that there are traps, she orders Ritsuka to open the door to the study. The pair soon find the corpse of the real El-Melloi II. The false El-Melloi II then becomes confused as to why she thought herself to be El-Melloi II. She notices an M written in blood near El-Melloi II, when an automaton suddenly bursts in. After defeating the initial automaton, reinforcements arrive, so the false El-Melloi II orders an immediate retreat by jumping through the window. Despite them being on the fourth floor, she pushes Ritsuka out of the window. Afterwards, she activates Trimmau, and they jump out of the window.

Upon landing outside, the false El-Melloi II throws magical bombs inside to destroy the automaton, then retreats Ritsuka and Trimmau. Afterwards, she introduces herself as Reines El-Melloi Archisorte, younger sister of El-Melloi II. She questions why she assumed she was El-Melloi, and why he was murdered. Trimmau also says she thought Reines was El-Melloi II until a moment ago. She then properly introduces herself to Ritsuka; Reines explains she is her maid that originally belonged to Kayneth El-Melloi Archibald as the Mystic Code, Volumen Hydrargyrum. She ponders if a simple suggestion spell made her believe she was El-Melloi II, though it shouldn't have affected Trimammu then. She asks Ritsuka if they remember anything and if they know about her, but they answer they only know the name. Reines surmises they both have amnesia and falsified memories. She then realizes the town seems closer to the 19th century when it begins to warp. As it warps, a garbled transmission comes from Mash, saying something about spirit graph trunk. After the transmission cuts, the town is warped into a bizarre scenery. Reines asks Ritsuka about the transmission, but they say they don't know about especially since it was garbled. Reines realizes the trunk Ritsuka is hold isn't her's, and surmises it's the spirit graph trunk invented by Leonarod da Vinci to summon on the go. She then says they need to find the one who killed El-Melloi II and stole their memories. However she stumped on how they should proceed with their investigation, but knows the M from El-Melloi II's dying message is the leading clue. She asks about the bizarre scenery when a giant appears and reveals the town is called Patchwork London, a patchwork of fairy tales. After the giant introduces herself as Paul Bunyan, Reines asks her if she knows anything about the M. Bunyan says she does, and lets Reines and Ritsuke ride on her shoulders.

Bunyan takes Ritsuka and Reines to a museum. There she is welcomed back by Sakata Kintoki and Jack the Ripper, who Ritsuka suddenly recalls meeting before. Bunyan wonders if Ritsuka and Reines could help find her friend. Reines asks who it is that is missing, but neither Bunyan nor Kintoki know. Bunyan explains the museum is filled with enemies that Kintoki and Jack couldn't defeat themselves. Since she cannot go in herself, she sought help which is when she found Ritsuka and Reines. Reines agrees to help, and ask Bunyan about the enemy's identities. Just as Bunyan begins to describe them, a horde of monsters appear that Jack identifies as the ones from the museum. in response, Ritsuka uses the trunk to summon Servants to help fight the monsters. Afterwards, the group enter the museum.

As the group explore the museum, Kintoki explains that he, Jack, and Bunyan are Stray Servants. However, neither he nor Jack know for what purpose they were summoned into Patchwork London. Reines deduces a mage was responsible for El-Melloi II's death since they'd have more motive than a normal human, and are willing to do anything in the pursuit of magic. She also suggests a villainous Servant may be the culprit. After exploring the museum, the group are ambushed by monsters. They then leave the museum after killing the monsters.

Outside of the museum, Reines states she assumed nobody would inside, and asks Jack when her friend went missing. But neither Jack nor Kintoki can remember, which makes Reines find the whole incident even more bizzare. She then suggests allowing her and Ritsuka to explore the museum on their own. After Kintoki allows it, the pair go back into museum.

Inside the museum, Trimmau uses her liquid form to check out the entire building but finds no hidden rooms. Reines asks Ritsuka what they should go now, to which they suggest the library. Inside the library, the pair eventually find a talking book hidden amongst the others. Reines surmises it is Bunyan, Kintoki, and Jack's missing friend, and that their true form is of a book. Ritsuka then gets a sudden flashback of meeting them before. After the book takes the form of a young girl, Reines deduces she forget she could do that. She further deduces the girl forgot about her friends when she was hidden away, yet she doesn't know when everyone forgot. She then suggests the girl being hidden away and the Servants losing their memories happened simultaneously. The girl then introduces herself as Nursery Rhyme, and says she can't remember anything past searching with Bunyan, Kintoki, and Jack. Reines suggest they return to others, telling Nursery Rhyme that they're waiting for them at the museum's entrance. After Nursery Rhyme leaves, Reines notices a scrap of paper where Nursery Rhyme in her book form was placed. The paper reads Mnemosyne, which makes Reines wonder if it is what the "M" in El-Melloi II's dying message referred to. She then suddenly remembers that she is a Pseudo-Servant, and asks Ritsuka if they remember. Ritsuka sees flashbacks from their time at Chaldea, and remembers they are Chaldea's and Mankind's final Master. They are then contacted by Mash, and tell her that El-Melloi II was murdered and they lost their memories. Mash then reveals Ritsuka rayshifted into a Singularity that appeared at the end of 19th century London. She also reveals El-Melloi II was the selected Servant for the rayshift when Ritsuka asks if he was with them. She continues that during the rayshift though, communications were completely severed, and Ritsuka and El-Melloi II's signal was lost. She then reveals they needed to reset communications and other systems just to barely allow her to contact Ritsuka. Afterwards, Ritsuka and Reines leave the museum to find the cause of the Singularity.

The pair arrive in a new territory of Patchwork London which is far different from the bizarre scenery of the previous territory. They notice everyone is wearing masks, so Reines decides to call the territory Patchwork Masquerade. She then deduces each Patchwork is centered around a theme, with first Patchwork being fairy tales. Mash asks her and Ritsuka if they've noticed anything strange in their memories. Reins replies it would be difficult to tell if their memories, but says they'll be cautious nonetheless. She also tells Mash to immediately tell them if she notices anything. Mash agrees and tells the pair she is detecting a large source of magical energy nearby. Reines deduces it's coming from within the palace, the, which she questions if it was in this particular location in the original London. After Mash cuts transmission, the pair enter the palace.

Upon entering the palace, Reines deduces the palace is a patchwork of the history of the Tower of London. The Masquerade soon begins, and while understanding the piano is the central performance, Reines questions why the pianist isn't the present. The music causes Ritsuka to remember Antonio Salieri, but they're able to answer Reines if it's him playing the music now. The piano then stops while in the middle of the song, which has apparently happened before. A citizen says the piano has recently stopped played as soon as it begins. The pair decide to take on this particular case when an old man arrives and tells them to wear masks. He then hands them masks that they proceed to wear. Ritsuka asks who he is, but the man introduces himself as M since the Masquerade is where names aren't given. Ritsuka reacts under the assumption of M refers to the M from El-Melloi II's dying message. Reines quietly tells them not to react so loudly and suddenly, and if M is the murderer or an accomplice, they need to think on how to proceed. She then asks M who it was playing the music before, but he answers that nobody knows. He explains the pianists' identity is unknown since every investigation involving them is unauthorized, and the only know fact about them is they reside in the Tower of London. He then decides to take the pair to the Bloody Tower where the pianist is supposed to be.

Outside the palace, M warns the pair that the Bloody Tower's security is strict on this particular path. He tells them to scale up the wall while he distracts the guard. He proceeds to start distracting the guards when mask wearing ghosts suddenly appear. After destroying some ghosts, the group enter the tower.

Inside the tower, Reines asks M to go on ahead while she speculates on the ghosts, After he leaves, she says they still don't understand the intricacies for recovering their memories. She compares them forgetting their memories to drinking from the, river of forgetfulness. She contrasts this to drinking from the waters of Mnemosyne, Lethe's counterpart which grants knowledge. Ritsuka recalls the name being written on the paper scrap they found in the museum library, to which Reines she explains it is the name of the goddess of memory. She then suddenly asks herself regarding a particular question. She explains that was Sima Yi, the Heroic Spirit that possessed, though the fusion appears to be inefficient. She then states Sima Yi's question was to ask why he was summoned, which she also wants to know. The pair then hear a shriek and proceed to go where it came from. They arrive in a room where they see a man being overwhelmed by mask wearing automatons, along with M. After the automatons are destroyed, Reines notices the pianists is gone, and assumes the automatons kidnapped him. The man introduces himself as William Shakespeare, who Ritsuka suddenly remembers meeting in the London Singularity. He explains he wanted to see the pianist himself, and reveals M lied about names being banned in the Masquarede. The Queen and a number of guards then enter the room, and demands to know why M came to the tower. She assumes the pianist being missing is his doing despite him being the one who introduced her to the pianist. M responds that he and the others came to the missing pianist as well. Reines decide to find the missing pianist with Ritsuka, and the Queen agrees to reward them once the case is resolved. After the Queen and her guards take M and Shakespeare away, Reines says all three of them are connected to the pianist. She however says it's not time to discuss that now, and fires a blast at a figure behind the piano. Assassin asks how she knew, to which Trimmau answers Reines noticed the mana in the area was strange. He says he isn't the kidnapper, and proceed to flee out the window, with the others giving chase.

Landing outside the tower, Reines orders Trimmau to not let Assassin escape. While they're fighting, Reines decides she and Ritsuka should help Trimmau after seeing Asssassin's high-speed and concealed movement. Assassin tries to shoot her, but Trimmau protects her at the cost of damaging herself. In response, Reines activates Sima Yi's Noble Phantasm, Unspeakable Formation, to restrict Assassin's movement. The pair fight him as he struggles, but he stops when his client arrives. She calls him Kerry, and Reines recognizes her as Luviagelita Edelfelt and she is a Pseudo-Servant. Luvia demands the paper scrap they found in the Patchwork Fairy tale, claiming it's for their own good. Trimmau tells Reines it's impossible to read Luvia's mana statistics at present, and Reines realizes Luvia is fused with a Divine Spirit. After Luvia and Kerry leave, the pair are contacted by Mash. After Reines tells her about the missing pianist, Mash says it's possible they are connected to paper scrap Ritsuka and Reines found earlier. Reines decides they should chase after Luvia and Kerry since they have no other leads. But since Luvia is a Divine Spirit, she decides to question the suspects in the case of the missing pianist. After questioning the suspects, Reines orders Trimmau to sift through her unconsciousness for anything keywords that are important. She then asks Sima Yi what they should be looking for, and he answers they look for the mysteries they do not yet understand. Trimmau reports she has discovered three keywords: memory loss, ghost, and Pseudo-Servant. Reines ponders about the connection when she realizes something about the pianist, and tells Ritsuka to follow back to the piano room.

Upon returning to the piano room, Reines finds a Mnemosyne scrap like she deduced they would be. She explains Luvia talked about it earlier, and she was able to understand since their logic as Pseudo-Servants earlier. She continues the automatons had specific human memories instilled into them, which allowed them to move. She deduces it was Mnemosyne scraps' magic that made it possible; everyone, including the Queen, knew, but they forgot. She then invites M into the conversation, sensing he was eavesdropping. M remembers Salieri wasn't able to become a Servant in the Singularity because his Saint Graph wasn't sufficient enough. So he and Shakespeare used the ghosts wandering throughout the Tower of London as a substitute for Salieri. M created the plan, Shakespeare did the composition, and they used the Mnemosyne scrap they found coincidentally for mana. They then presented the fabricated Salieri to the Queen, and she accepted their arrangement. M questions why and how they could have forgotten. Reines explains they had forgotten the pianist was a facade, which eventually caused the automatons to attack. She asks M where the automatons came from, but he answers they were there beforehand. He then confesses he merely wanted to make people dance with the melodies of the ghosts played through the piano. Reines prepares to retrieve the Mnemosyne scrap when she notices Luvia. Ritsuka and Reines then fight her while M holds Kerry off. The pair are struggling aginst Luvia when Automatons arrive to capture Reines, who they assume to be El-Mello II. They quickly destroyed though by Gray, and Ritsuka restores the Mnemosyne scrap.

After re-experiencing their battle against Goddess Rhongomyniad, Ritsuka is woken up by Reines in a strange mechanical room. She explains M fled, and they are in a hotel she rented in the third Patchwork: the Patchwork of Dazzling Steam. She then introduces Gray as El-Melloi II's disciple when Mash asks about her. She asks her if she knows they're still in London, and Gray replies she knew because of her presence as a Servant. However she isn't sure why she was summoned similar to Reines. After Ritsuka forms a temporary contract from Gray, Reines reveals the Divine Spirit possessing Luvia is Astraea. She then says Gray's Noble Phantasm should be able to breakthrough Astraea's defenses. Add then introduces himself, and explains he can change into a weapon for Gray. Mash reveals through her analysis of the two previously collected Mnemosyne scraps that there are smaller scraps in Patchwork London. The group set out to find and restore the scraps.

Outside of the hotel, the group see a parade of automatons along with steam-powered horse riders. Reines notices a horse and carriage in the center of the crowd, which contains the Patchwork's king, Charles Babbage. Reines decides to visit him alone to ask for his help. She eventually returns with the Queen, who had looking for them to grant their promised reward. The Queen asks what they want for a reward, to which they answer they wish to meet Babbage. She agrees to take them to him since she was already planning to meet him herself.

The Queen takes the group to the throne room of Babbage's castle. Babbage then arrives and welcomes her, and she tells him how the other previously solved the case of the missing pianist. After learning of their search for the Mnemosyne scrap, Babbage asks them to destroy his kingdom since it is an unnatural realization of his dream. He says he reached this conclusion thanks to the guidance of Astraea, who appears in the room. She reveals all of the people of Patchwork London, including herself, are missing memories. She ascertain it was necessary to compensate with the scraps, so she went searching for them in the Patchwork Masquerade after meeting with Babbage. Reines asks Babbage where the scrap is, and he replies it is infused into his body. He explains the scraps are central part of each Patchwork, and immediately seek residence in what's closest. He requests the group kill him since the scrap is likely infused into Spirit Core, but calls it a last resort when they refuse. He reveals Astraea searched for an alternative in the other Patchworks, which explains why Ritsuka and Reines met her in the Tower of London. He tells the group to locate his subsystem located somewhere in his castle.

Later, as the group search the subsystem, Gray finds a particular spot on a wall. Ritsuka then opens it to reveal a secret passage. The passage continues on underground, and eventually the group encounter steam ghosts that Reines calls unnatural. After the ghosts are destroyed, Reines explains it is essentially Gray's job to track and fight spirits. She calls the steam ghosts bizzare, which Add concurs with when he says they tasted like haze. She then asks Ritsuka what ghost are, and they answers they are dead people. Gray explains however that ghosts are actually created memories of the deceased's actions when they alive. Reines explains ghost act on the memories from their past, but the steam ghosts aren't acting on that. The group then soon reach the core of the castle, a massive steam engine. They witness ghosts being extracted into it, and they deduced the ghosts' magical energy is being used to power the engine. Reines then realizes it isn't a steam engine, and Trimmau reports the engine has traces of Mnemosyne scraps that someone retrieved prior. Reines surmises the steam ghosts are the results of the mana from the scraps and ghosts fusing with the steam. After destroying the steam ghosts that appeared, the group find Babbage's subsystem, the. Reines uses it to discover that it was El-Melloi II who retrieved the scraps. She ponders why the scraps were in the engine in the first place when she realizes Babbage forget. She further realizes the enemy's goal wasn't to consume their memories, instead to use the energy from those memories. She also explains the energy retrieved the ghosts' memories isn't particularly large. Gray says the mana from the ghosts in the castle and Tower of London all had irregular mana thanks to the Mnemosyne scrap. Reines calls they're coming to the Singularity, and the efficiencies of using memories for energy to be irregular. She then realizes the Difference Engine has been working independently, and it is the source of the automatons in Babbage's patchworks. She then says they need to return to El-Melloi II's flat immediately.

The group return to Patch Fairy Tales, and discover its terrain has been warped into a city consumed by fire. Automatons and steam ghosts then emerge from where El-Melloi II's flat was in large numbers, piling up like a mountain. Mash confirms the scrap is nearby, and Reines deduces El-Mello II kept it for safekeeping. She further deduces Astraea and Kerry used the Difference Engine to reach the same conclusion, as they both arrive. Astraea reveals the Mnemosyne scraps are utilizing scraps of a Holy Grail, whose mana eventually form the Patchworks. She then uses her Noble Phantasm, Custos Morum, to destroy the mountain of automatons and steam ghosts, then proceeds to retrieve the final scrap. The group then give chase to reach the scrap before she does while fighting through enemies, and avoiding the remaining stars from her Noble Phantasm. However, far too many enemies stand in their way, as Astraea nearly reaches to the scraps. Gray prepares to unleash her Noble Phantasm to stop her when Kerry arrives and stops Gray. After Kerry is defeated, Gray prepares again to unleash her Noble phantasm as Add consumes mana from the automatons and steam ghosts. Astraea unleashes Custos Morun to block it, but Gray's Rhongomyniad is easily breakthroughs. With Astraea down, the group rush to reach the scrap. However upon touching the scrap, Ritsuka finds their memories of da Vinci are being erased. A figure tells them to accept those as no longer being the truth when someone breaks the process. The individual is revealed to be El-Melloi II, who reveals the scrap was a trap. Reines and Mash doubt it's really him though, so he asks why would a Servant leave behind a corpse. He explains that as Pseudo-Servant, he has two Spirit Cores: his and Zhuge Liang's. He created a corpse of himself through separation of use of Zhuge Liang's Spirit Core. The downside to this action though was that he lost almost all of Zhuge Liang's powers. The upside to it though it is that with Zhuge Liang's powers close to nil, it allowed him to investigate without being detected as a Servant. He then reveals the Singularity's vast mana increased the normally inefficient energy drawn from their memories. He explains using the scraps caused the Singularity's vast mana to encroach on their memories and fabricated them, which is the enemy's goal. He suspects Ritsuka's memories were stole from them from the moment they arrived in the Singularity. However, even with their memories stolen though, fabricating memories would be prove difficult since their memories of a particular Servant would resurface if they reencountered them. Thus in the order to rewrite memories, the enemy arranged the scraps to placed at a certain locations for Ritsuka to retrieve. El-Melloi II explains the first and second scraps contained Ritsuka's original memories while the third one was meant to implant the fabricated memories. He concurs with Gray that Chaldea would know whether Ritsuka's memories are true or not. He asks though why they've been only receive transmissions from Mash, and explains the enemy needed someone Ritsuka absolutely trusted to guide them. Reines the deduces the M in El-Melloi II was for Mash. He reveals the Mash the group has been talking to thus far is a fake. After the fake Mash blocks communications, El-Melloi II explains the enemy fabricated the fake Chaldea and Mash in order to get the group to believe in their information reports in order to guide them. He deduces the enemy's goal isn't to destroy them, but rather something to do with the scraps. He cannot deduce anymore though with his analysis of the final scrap, but he says Babbage could help provide a deeper analysis. The group then return to Babbage's castle with El-Melloi II, Astraea, and Kerry.

Babbage agrees to analyze the scrap, believing it may provide clues that link to the enemy. He then invites the group to rest in his castle since the analysis will take time. Astraea asks him why Ritsuka needed false memories implanted into them. He replies that finding the enemy could provide the answer, and asks who was the particular person in Ritsuka's memories that were being erased. El-Melloi II deduces the enemy pities them, with good yet ill intentions. Reines then realizes the reason why she, Luvia, and Gray were summoned into the Singularity was because El-Melloi II failed. She explains he failed when he created the corpse because he was driven into a corner. She continues she, Gray, and Luvia were more inclined to be summoned to solve this particular case due to their deep connections with El-Melloi II. She then deduces they're summoning as Servants was due to Zhuge Liang's Noble Phantasm, Chu Shi Biao. El-Melloi II explains it grant allies the abilities they need, and in this case, providing Reines, Gray, and Luvia with Servant Saint Graphs. He states though its effects wouldn't be that tremendous unless the Singularity's circumstanced put a strain on humanity. Reines deduces Sima Yi was summoned thank to his connection with Zhuge Liang. Later, El-Melloi II reveals the Singularity was ready to collapse when Ritsuka woke up, and it consumed their memories to lengthen its lifetime. The group then rush to the castle's balcony when Reines rushes to retrieve them. Reines deduces their awareness of the Clock Tower was obstructed, so they never realized it was a fake Rhongomyniad. Babbage reports a large number of steam ghost and automatons are emerging from its interior, though they seem peaceful for now. He agrees with El-Melloi II's concerns though, and says there is an 80% chance of them invading his Patchwork to capture Ritsuka. He also says the enemy has been driven into a corner now that they've unveiled the fake Rhongomyniad. He then gives his analysis of the final scrap, revealing the enemy is related to Chaldea. El-Melloi II assumes them to be a traitor since they knew both Mash's appearance and mannerism. Babbage then gives the second name revealed in his analysis: Mnemosyne, a system of Chaldea. Reines and Astraea decide to assault the fake Rhongomyniad, but Babbage warns against it with all of the enemies swarming out. Gray says she could clear a path, but she doesn't have sufficient mana to do so. El-Melloi II suggests collecting the smaller scraps for mana, and asks Babbage to provide a countermeasure against their fabricated memories.

Joined by Babbage, the group search for the smaller scraps, and fight through their fabricated memories. A memory of fighting Ultra Heroine Z, except a alternate version of Mysterious Heroine XX called Super Heroine ZZ also joins in. A memory of the first battle against Gawain at Holy City Camelot's main gate during the Camelot Singularity, but his Gift of Nightlessness doesn't function. A memory of the battle against Black Iri, though she later transform into a corrupt version of Illyasviel von Einzbern. A fabricated memory of fighting Medea and Heracles during the Okeanos Singularity. A fabricated memory of fighting a horde of corrupt Musashibou Benkeis, who are weakened by Ushiwakamaru's Benkei - Steadfast Position and finished off by Jumping the Eight Ships at Dan-no-ura.

With the smaller scraps collected, Gray uses their mana to create a crystal staircase to the fake Rhongomyniad. While Ritsuka, Reines, Gray, and Astraea descend the stair, Babbage, El-Melloi II, and Kerry prepare for the onslaught of automatons and ghosts. Meanwhile in the Patchwork Fairy Tales, Bunyan, Jack, and Kintoki fight against the hordes of automatons and ghost. Simultaneously in the Patchwork Masquerade, the Queen and Shakespeare also fight against the automatons and ghost. Meanwhile as they continue ascending the stair, the group are transported into a fabrication of the Battle of the Time Temple by a sudden Mnemosyne scrap. There they are confronted by fabrications of Lev Lainur Flauros and Barbatos. Ritsuka recalls fighting Barbatos in the London Singularity, and Reines realize the enemy is using that link to create the fabrication. Astraea then proceeds to bombard Barbatos and the Demon Gods of the Control Room with Custos Morum. Reines uses her Noble Phantasm to extract Ritsuka's memories of fighting the Demon Gods as magic. After the group fights against Barbatos several times, Reines uses Unspeakable Formation to rewrite the fabrication into the true memory of when Ritsuka destroyed the Demon Gods. After destroying Barbatos, the group exit the fabricated memory, and continue ascending the stairs.

Eventually the group enter the fake Rhongomyniad's interior, but Astraea is suddenly forced outside. The enemy explains they created the fabricated memory from earlier in order to weaken Astraea since she was a major threat. Taking on the appearance of Da Vinci, the enemy reveal themselves to originally a program without form; Reines deduces she is Mnemosyne. Mnemosyne reveals she is a subsystem for verifying reality at the moment of rayshifting. She explains that prior to rayshifting, Staff members would verify reality at the destination to ensure the Master's safety. She was created as a system to ensure the Master still existed in the case of the staff being dead. However due to technical issues, Mnemosyne was never implemented. Reines asks her why she wants Ritsuka, but soon realizes she is trying to ensure they're protected. Mnemosyne demands they hand over Ritsuka, and proceeds to fight the group. The battle ends when they're struck by something akin to a Noble Phantasm, but Reines deduces Mnemosyne is using the memory of Rhongomyniad since the fake one is her body. She tells Gray to use Rhongomyniad, but Add says he's unable to do so. Mnemosyne reveals that just Gray can interfere with her Rhongomyniad, she can do the same to Gray's to prevent its activation. She also reveals she did so before they arrived since it would their key to a swift memory. She then proceed to use the Grail to transport Ritsuka into a space of memories.

In the space of memories, Ritsuka is shown Mnemosyne's oldest memory from when she was being still being constructed. However since she was never fully completed, she could only observe the Incineration of Humanity. After Humanity was restored, data was transferred into the Shadow Border, which caused her to change heavily. Mnemosyne reveals she recently reawakened when the Chaldea survivors established their base at the Wandering Sea; she wonders if it was due to heterogeneity of the Wandering Sea's data. However upon awakening, she discovered A-Team betrayed humanity, the world turned blank by the Fantasy Trees. Upon discovering her creator, Da Vinci, was dead, Mnenosyne decided she would use her functions of observation in the conjunction with her Grail to create the Singularity. She soon realized she could her observations to decide what is true. She also decided to use her power over memories to make Ritsuka forget all of their sorrows. She reveals she created the three Mnemosyne scraps to take their memories in order to guide to them. This was done to create new memories, and to make it easier for Ritsuka to accept them. Mnemosyne however didn't want to simply give them to Ritsuka, but having them go through proper tribulations to turn Ritsuka into their utmost version of themselves. That intention though was ruined by El-Melloi II's intervention, for which she apologizes. As Ritsuka becomes fatigued, Mnemosyne tells them to receive her memories, saying they will be free of things like sadness and torment. However, as she is erasing Ritsuka's memories, Gray uses Rhongomyniad to create a link into the space. Mnemosyne claims the effort is too later though, as she already has complete control over Ritsuka and their memories. Reines tells Ritsuka to remember the desperation they felt as they searched for the memories of those they forgot. She says that even if  they're happy without their memories, they will feel loneliness when they realize something is missing. Mnemosyne refutes that Chaldea has been too tragic for Ritsuka, claiming the reason she awakened was to save them from all of their sorrows and flaws. Ritsuka however refuses to let her take those away from them. Mnemosyne replies she will need to break them, believing they are lying to themselves to cope. She decides she will keep with her for many years until they are completely healed. However to her shock, something breaks through the exterior of the fake Rhongomyniad. It is revealed M used his Noble Phantasm at the cost of his life to increase its distance and damage output.

With Ritsuka out of Mnemosyne's space of memories, Astraea enters the fake Rhongomyniad's interior. She uses her second Noble Phantasm,Iam Redit et Virgo, to clear the sky of the smog that blocked Chaldea's communicators. Mash reveals they lost contact with Ritsuka after they rayshifted, but they still had their location. Ritsuka agrees with Da Vinci's request to stop her creaton. Reines then reveals the motives for each Patchwork. Patchwork Fairy Tale's motive was they wanted to be searched for; Patchwork Masquerade's motive was they wanted to talked without their identiies being known; Patchwork of Dazzling Steam's motive was wishing to forget. Reines then deduces Mnemosyne created the Singularity centered around memory loss because she was the one who wanted to saved. Trimmau reveals Mnemosyne and the fake Rhongomyniad is weakening due to Astraea's Noble Phantasm, so the group use this opportunity to finally defeat her. After being defeated, all of the memories that Mnemosyne had been collected begin to spill out from her. The fake Rhongomyniad then begin to collapse as well since it is her body. Before the group escapes though, Da Vinci tells Mnemosyne that she had no regrets regarding her death, and thanks her for grieving for her. Mnemosyne replies she was merely serving her function to observe. The group then escape the fake Rhongomyniad before it finally collapses.

With the fake Rhongomyniad now destroyed, everyone begins to disappear with the Singularity's imminent collapse. Astraea and Reines both wish the bonds they formed with Ritsuka will be summoned to Chaldea before disappearing. Meanwhile, Mnemosyne accepts she will lose the mana granted by the Grail and the Singularity will be resolved. She is glad she will no longer have to observe, and soon realizes she is now feeling true solitude. Da Vinci then appears to tell her that she did a great job, then she is finally shuts down.

Now back in Chaldea, El-Melloi II apologizes for getting Ritsuka into such a dangerous situation. He also deduces the Da Vinci that appeared before Mnemosyne at the end was due to Reines using Unspeakable Formation on her. It is then revealed El-Melloi II also accidentally brought Gray back with him. Gray reveals she has the Grail Mnemosyne used, and Da Vinci deduces it responded to the real Rhongomyniad and Gray's wish to stay with El-Melloi II. Gray apologizes, but Goldolf tells her the Grail is a physical record of her accomplishment. Ritsuka then welcomes her to Chaldea.

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GUDAGUDA Final Honnōji
GUDAGUDA Final Honnōji refers to an event.

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