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
Ritsuka and Mash discuss how Sion Eltnam Sokaris and the Captain are working to add sailing capability to the Shadow Border so they can reach the Atlantic Lostbelt. Mash states a part they need can only be found in the Indian Lostbelt. She then mentions that she hasn't seen anyone, not even Fou. The alarm suddenly sounds off, and Sion warns Chaldea is under attack. She discovered all the data until yesterday crashed, and orders Ritsuka and Mash to the command room.

At the command room, Sion explains 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 reveals everyone expect them has disappeared, and there are no summonable Servants despite the Spiritual Foundation Graph still functioning. She deduces everyone was forcibly rayshifted using the Coffins as a medium. Such a feat would be impossible with Chaldeas, but Novum Chaldea isn't as protected against hacking. Sion suspects the culprit is someone unrelated to the Crypters since they have no reason to leave the Lostbelts. She then reveals everyone was rayshifted to a space beyond the "Proper History". She theorizes the enemy's motive wasn't to kill but to capture, and they froze everyone once they were summoned while still in spiritron form to eliminate any resistance. She reveals the destination is similiar to a Singularity, but left alone it will interfere with the "Proper History" akin to a Lostbelt. She calls it a hybrid of a Singularity and a Lostbelt, similiar to Shinjuku or Shimosa. She reveals its coordinates are in Japan during the Edo period. She warns she cannot let Ritsuka and Mash go since she need another person to observe and confirm Ritsuka's existence. Mash realizes she'll need to stay when Sion says she needs someone who can do the work of three. Kiara Sessyoin then enters the room, and decides to go with Risuka. Sion then discovers the signal of the last Servant to be reverse summoned. The Servant had resisted and escaped after the rayshift was complete. Sion orders Ritsuka to find the Servant and speak with them. Ritsuka and Kiara then rayshift into the Singularity.

Ritsuka and Kiara arrive at Edo Castle, which is the closest location to the signal. The pair find who they assume to be Parvati, but she introduces herself as Lady Kasuga. She explains 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. Paravati confirms giving her body to Kasuga was the only way to save her. It was also the reason she could escape the enemy's forced summoning. The group are then contacted by Goldolf Musik, expect he doesn't know of Chaldea or his family. He then introduces himself as the shogun, Tokugawa Goldolf. He assumes the group are guests, and allows them entry into the Ooku. Sion deduces the enemy manipulated him into turn off the control room's security to forcibly reverse summon everyone. Afterwards, he rayshifted to the Singularity. Kasuga asks the group to rescue the commanding shogun from Oooku. Paravati agrees, as Kasuga's knowledge will prove valuable.

Upon entering the Ooku, Kasuga finds it different from the one she knows. She explains its other entrances were erased after it was turned into a labyrinth. Sion notices the rooms are distorted, and finds it similiar to spatial reconstruction magic. The group are then confronted by multi-armed female automatons, who Kasuga suspects are the Ooku's maids. After destroying them, they proceed into the labyrinth.

After the entering the labyrinth, the group are met by Matsudaira Nobutsuna. He reveals  is dead, but he refuses to reveal whom he serves now. He then orders maids to attack, so Parvati destroys them. After Nobutsuna is gone, Sion suspects he is conspiring with the enemy. She orders the group to fully investigate the labyrinth to discover its rules and its creator's intentions.

A little earlier, Goldolf finds himself in the labyrinth. He assumes he is sleepwalking, and tries to find the exit. As he searches for the exit, he encounters maids that 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 maids to not be destroyed needlessly in accordance with the teachings of Buddha. The others 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. Later after destroying more maids, Paravati blesses their collects heads even though they're dolls that never asked to live. She wonders if she was summoned to the labyrinth because of near unconscious acts of kindness.

After the group enter a room, the group are welcomed by a young girl. Ritsuka notices she and Paravati both have the same vessel. The girl explains that while Parvati possessed the vessel's good side, she possessed her dark side. Paravati reveals she is a Kama. She 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 felt pleasue after clearing the 1st floor. She reveals she made the maids so efficiently weak to make the group forget the "do not kill" precept. 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 that Sion assumes to be the ghost's catalyst. Ritsuka is then enveloped with a light from the pillbox. They exclusively hear voices criticizing the shogun, and a woman comforting said shogun. Kasuga notices the name Tsunayoshi engraved onto the pillbox, but she doesn't recognize it. Mash explains is the fifth Tokugawa shogun, which confuses Kasuga since the era is the third generation of the Tokugawa. She then asks why there is a pillbox from a future generation of the Tokugawa. Sion notices the pillbox has a spiritual inclusion to it. Its ability can help investigate if combined with Ritsuka's Mystic Code. After Sion finishes modifying the pillbox, the group continue exploring the labyrinth.

while contining to explore the labyrinth, Parvati notices and picks up a Hanafuda card. Sion reveals it was turned into a portion of the Ooku. Needing further analyasis, she asks the group to find more. They destroy another ghost, and Ritsuka is enveloped in light after the pillbox it left behind. 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. Sion decides to use the pillbox like she used the previous one.

Meanwhile, Nobutsuna tries to convince Yagyū Munenori to join him and Kama, but he refuses. A maid reports the group is approaching; Nobutsuna kills her for interrupting. Upon entering the room, 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. She says it's 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 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. After Nobutsuna retreats, Mash realizes the Ooku is what turned Edo Castle into Singularity. Yagyu agrees with Kasuga that they need to rescue Iemitsu. Ritsuka then hear more voices from the pillbox left behind by the ghost. The voices blame the shogun for the influx of foreigners, who they blame for a recent earth quake. A woman convince the shogun to relax when he struggles what to do. Sion notices the name engraved is, the thirteenth Tokugawa shogun. After she combines it with Ritsuka's Mystic Code, the group continue onwards.

Earlier, Goldolf gets bored of fighting weak enemies while searching for an exit. Maids then appear, and offer him the Ooku's Services. Though cautious at first, Goldolf accepts their offer. He then regale a few tales for them 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 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 going 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 the floor are especially strange compared to the previous floos. Nonetheless, her knowledege of the original Ooku lets her guide the group. They eventually come to a path that splits two ways, so they follow the path Kasuga takes. They come to a room where they rest while Sion maps out the floor. Kiara borrows Ritsuka's communicator, and adds an new line of code to the current map. She explains her change 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.

Following Kiara's suggestion, the group eventually encounter Kama again. She orders a ghosts and maid to attack them.After they're destroyed, Ritsuka picks up another pillbox, but the voice is too short to remember. Kiara sees the name, the fourth generation Tokugawa shougun, engraved on it. Mash reveals communications become more disrupted, as they delve deeper into the labyrinth. Kiara thinks to herself that she feels there is another side of Kama.

The group eventually come to hallway where they immediately pick up traces of alcohol in the air. Scheherazade and Mata Hari then approach them, offering 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. Yagyu eventually knocks out Mata Hari with his sword pommel, while Kiara renders Scheherazade unconscious with a spell. Mash explains what Scheherazade and Mata Hari's condition is similiar to Yagyu's when communications die. Ritsuka then uses a hanafuda card to return them to their old selves. Scheherazade and Mata Hari then join the group.

Later, Kiara reveals the pattern she has noticed thus far. The 1st floor was abstain from killing; 2nd floor was abstain from lying; 3rd (current) floor is abstain from drinking. Each floor is centered around a theme based on the of Buddhism. The group 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 drunk. She then uses her Noble Phantasm to give them a simulation of being drunk. 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 come to a dead-end, so Yagyu suggests following paths reeking of alcohol.

The group eventually enter the innermost chamber of the floor. Nobutsuna appears to check if they're breaking the Five Precepts to advance through the Ooku. He summons two ghosts to fight the group. He then reveals Kama created the labyrinth so they couldn't resist falling into depravity before he retreats. After the ghosts are destroyed, Ritsuka picks up another pillbox with the name engraved ion it. Kiara warns they need to be especially cautious going forward.

On the next floor, the group collect a key from the maids they recently defeated. Ritsuka finds it strange the floor has many locked doors. 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. Mata Hari realizes they're essentially forced to what do 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 maids 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. In the next room, the group soon hit a dead end. Kiara wonder if the handless clock she noticed earlier is a clue to advance further. Kasuga noticed one of the pillars had a hole something could be inserted into. Kiara realizes the puzzles 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. 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 hide something Kama doesn't wish to be seen. She suggest they don't forgot that the wall exists.

In floor's innermost chamber, the group encounter Kama once again. Kiara realizes she wants them to reach the Ooku's innermost depths while breaking the precepts. Kama claims her goal is simply to give pleasure in her Ooku no matter what is. She then turns heself into a young woman. She reveals she created the labyrinth so the group would feel great pleasure from breaking the Five Precepts. She tries to tempt Ritsuka into breaking the precept of not stealing, but the others defend them. She reveals she has the key to the next floor. After summoning a ghost, she asks for Kiara's identity since everyone inside Chaldea except Ritsuka should've been turned into materials. The group then proceed to defeat her and the ghost. After they both disappear, Ritsuka picks up the pill box left by the ghost. They hear the a shogun struggling against the doubts and criticisms of others, and a 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. After obtaining his soul, she followed the karmic threads to gather materials. She followed them 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 its defenses so she could reverse summon everyone there. She deduces the Ooku is a means to Kama's goal, otherwise she didn't need to attack Chaldea. Kama reveals she only found the Ooku by the chance, and her goal was Ritsuka. 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 to 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 experiences those pleasures are the shogun. Kiara realizes Kama's intention was to corrupt Ritsuka into a Tokugawa. Kama reveals Goldolf was the first invite into the Ooku, where he was eventually corrupted into a Tokugawa. 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 insists it's 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 she became bound to the concept of the universe after Shiva's third eye that incinerated also burned a hole in the universe. She then confesses she is now a Demon King. Parvati realizes Kama is now her alternate self, Mara. Kama reveals that at present, the interior of her Ooku is identical to her existence as the universe. This means everyone is inside her, and they cannot move as they please. Karma says it's futile to resist the universe, so everyone should surrender and deprave themselves in her love. Kiara realizes Kama cannot draw out the power of the universe, which Kama admits she cannot in her current vessel. She then reveals she is a Beast, and Kiara confirms she is a fragment of Beast III/R. Kama reveals she sought Ritsuka because they defeated Beast III/R while still in larval form to complete her 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 the incarnation of self-love. Kiara realizes infinite love from one source would cause the overall concept of love to be destroyed. Declaring she will give everyone her love no matter, Kama calls Ritsuka to her. Mata Hari tries to get them to resist, while the others attempt to fight Kama. She easily repels them, then orders Nobutsuna to have Ritsuka drink with Goldolf. Nobutsuna explains in the Ooku's innermost chamber, the conceptual authority of the shogun is strengthened, thus it can manipulate others with mere words. Kama states her body holds the same concept. Suddenly though, Kasuga slaps Goldolf to temporairly break his mental conditioning as a Tokugawa. Kama prepares to destroy the group when Goldolf attacks her, which easily dodges. Goldolf then returns to being a Tokugawa since his reversion to his old self was only temporary. Kiara decides to hold Kama back while the others escape. She tells the others to gather the hanafuda cards as part of her plan to counteract Kama. She then expells them from the chamber, and fights Kama using her power as a Beast fragment. Kama seemingly destroys her.

The group arrive outside, and Ritsuka's transformation into a Tokugawa stops. Mash and Sion then reestablish contact. Parvati believes Mara is the side of Kama 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 realizes Kama's body is linked to Ooku since it is a recreation of the Universe, and she is linked to the concept of the universe. Sion realizes they can use this information to discover an exploit against Kama. When Ritsuka recounts the voices they heard from the pillboxes, Sion reveals they contain the souls that serve as the lynchpins for the Ooku. She points out the group has yet to obtain the pillbox containing the soul of the last Tokugawa shogun,. She explains Yoshinobu ended the Tokugawa's reign, so his pillbox should hold the concept of that act. Thus it can be used against Kama since she is linked to the Ooku and the Ooku is linked to the Tokugawa. Yagyu realizes the blank wall they encountered on the 4th floor is hiding Yoshinobu's pillbox.

The group return to the blank wall on the 4th floor. Yagyu warns against cutting it open due to the possiblity of it being comprised from the people from either the castle or Chaldea. He cuts it though when Sion needs a analyis to what he said was true. However his slash had no effect, as his swordsmanship cannot cut through magic. Sion senses the wall has a keyhole hidden with conceptual magic. It needs a card to serve as a key that needs energy to interfere with the Ooku. Mata Hari suggests using the hanafuda card, which Sion suspects could cause a convergence to break the seal. She also suspects the cards were laid out purposely to counter the Ooku based on her and Mash's analysis. 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 attacks the group. After the ghost is destroyed, Ritsuka acquires Yoshinobu's pillbox, yet they hear no voices. Sion warns Ritsuka may begin transforming into a Tokugawa again once they enter Kama's chamber. After fusing the pillbox 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 return to Kama's chamber, 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. 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 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 because she sensed the dying Kasuga still desiring to love the Tokugawa more. She reminds Kasuga of 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 heard from the pillboxes were the residual actions of Kama stored as thoughts. Kama reveals 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 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. She then charges her form into one she claims can reach the farthest reaches of the universe. She then removes the platform the group was standing, leaving Ritsuka floating in space. Scheherazade orders the Lamp Djin to grab hold of Ritsuka. Kama then reveals every star in her inner universe is another her. She then envelops the group in the darkness of space.

After everyone is enveloped in the darkness of space, Scheherazade summons the Magic Carpet for them to rest on. Sion realizs they need a way ot 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 she is a merely soul only bound to the world because she is connected to her Saint Graph. Kasuga explains that since Kama used the souls of everyone to create her Ooku, the same should apply to her. She then requests Scheherazade and Mata Hari 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 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 can use the corruption inside Ritsuka to interfere their mind. Nobutsuna however 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 to release his 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 for Yagyu to wield against the false Tokugawa. he group then fight Kama while Yagyu cuts down her clones. Eventually Kama understands she will only be killed by Yagyu if she continues to hold the property of a Tokugawa. She thus removes said property from herself, but that also removes 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 strikes her Trishula Shakti followed by a slash from Yagyu. Kama is destroyed lamenting she couldn't give the humans she despises her infinite love.

Sion confirms that with Kama destroyed everyone will return to where they belong; Goldof is also back to normal. Kasuga then gives the Grail she found inside a pillar earlier. She thnaks the others before returning to where she belongs. After Yagyu returns to Chaldea, Paravati reveals Beast III/R manifested because Mara's presence became greater than Kama's She explains such a thing shouldn't be possible, as the Hindu Gods use their Authority to suppress Mara's presence in Kama. She theorizes the reason for it was because something happened to them when the Earth turned blank. Mash realizes there may be a possible connection in the Indian Lostbelt. Parvati apologizes that she won't be able to help 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 realizes Kiara reconstituted herself after being incinerated by her. She then wonders if Kiara wants to consume her to gain a perfect. Kiara answers that though they are both Beast III, they repel each other since their Sins are polar opposites. She then grants Kama 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 accepts it as a chance to learn about the love Kasuga spoke, as well as a chance to irritate Paravati with her seductions.

Participants
Servants

Non-Servants