Atlantic Lostbelt

The Atlantic Lostbelt (大西洋の異聞帯, Taiseiyō no Ibuntai^?), alternatively the Greek Lostbelt and Lostbelt No. 5 (ロストベルト No. 5^?), 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.

The events of Chaldea's visit to this Lostbelt are covered in fifth chapter of Cosmos in the Lostbelt, split into two parts; Atlantis: Ocean in the Age of Titans (神代巨神海洋^?) and Olympus: Interstellar Mountain City (星間都市山脈^?, localized as "Interstellar Mountaineous City"), alternatively The Day God Is Shot Down (神を撃ち落とす日^?, localized as "The Day to Bring Down Gods").

Setting

• Titanomachia
• Leukosmachia
• Gigantomachia

1/3

When their universe was on the verge of collapse, a failing Chaos, a technologically advanced, terraforming Dyson-Sphere flagship of an alien civilisation escaped to this universe. It deployed various machines to fine a suitable world to rebuild their civilisation, and the machines eventually found Earth, landing there with the intent of reviving their civilization. These machines, who would be known as the Titans, created the Twelve Pillars, the original God Concepts, during their recolonisation on the planet. The Twelve Pillars, along with the Titans were accepted and deified by the human population, eventually adopting human forms and becoming the Olympian pantheon, the Twelve Machine Gods. However, the Olympians went to war with the Titans, and shortly after their war did Sefar Sefar invaded Earth on 12000 BC. Unlike what occurred in the primary history though, Sefar was defeated by Zeus fusing with the other Olympians against their consent, gaining their authorities and power.

However, a civil war was triggered when his decision to expand the Age of Gods was opposed Hephaestus, Hades, Athena, Apollo, Hestia, and Ares. Zeus, Artemis, Poseidon, Demeter, Aphrodite, and Hera survived this conflict, and continued their rule after Zeus defeated the opposing gods. Their powers and technology eventually advanced to the point where they redefined the concept of Gods. They fully became machines using powerful divine nanomachines as their Authorities. Some of their nanomachines, however, were taken by others. Hera, who was critically wounded in the war, allowed Zeus to fuse her with Europa, thus allowing him to be with them both. Months before Chaldea's arrival, the Counter Force summoned Servants to aid them when they arrive, but they were very quickly defeated by the gods' power.

History

Atlantis: Ocean in the Age of Titans

Upon arriving in Atlantis, Chaldea's Nautilus is attacked by Odysseus' forces. He serves as Kirschtaria Wodime's main general in his plan to take out Chaldea in one swipe, using Atlantis as a trap. Chaldea defeated Odysseus' forces, but the Nautilus was left vulnerable to orbital destruction from Artemis. Ritsuka becomes separated from the others, but they reunite with the help of Charlotte Corday and Orion. It is learned Artemis usually only attacks those nearing Olympus, but her pattern with Chaldea's arrival.

Olympus: Interstellar City Mountains

Chaldea arrives on Olympus using their new "Storm Border" transport. However, they're shot down by Zeus on the city's outskirts. The Counter Force summons Thomas Edison, Nikola Tesla, Caligula, Mordred, Frankenstein, Minamoto no Raikou, and Sakata Kintoki to aid against him. Miyamoto Musashi also helps Chaldea in their fight. Chaldea confronts and defeats Demeter and Aphrodite. Edmond Dantès also saves Ritsuka from Aphrodite's song from they lose their mind. Caenis allies with Chaldea after she was saved by Goldolf Musik in Atlantis. She, Caligula, and Musashi fight Dioscuri. Meanwhile, Edison and Tesla proceed to build a mech to fight Zeus that uses divine lightning absorbing technology gleamed from studying Kintoki. Helena Blavatsky is later killed by Olympian guards as she buys them time.

Later, Holmes duels Muramasa, who escapes to the English Lostbelt. He was sent there by the Alien God to deal with a problem. It is revealed Zeus intends to use Fantasy Tree Magellan to expand the Lostbelt to fully cover the world, then absorb all the power of Fantasy Tree intended for the Alien God to turn Olympus into an interstellar colony and leave Earth for a new world, though Humanity would not survive space. Ashiya Doman and Rasputin wait for the Alien God to supposedly descend on Magellan. Tamamo Vitch attempts to ascend into a Beast different from the original Tamamo-no-Mae's nine-tailed form, and with no connection to Amaterasu. She partially succeeds in becoming the Beast of Affection, but she is defeated by Chaldea as she lacked something to complete her transformation. Caligula dies, and his body is used as a catalyst for the Grand Lancer, Quirinus. Mash is also given the original Black Barrel by Sion Eltnam Sokaris.

Eventually, Chaldea and their allies fight Zeus using the mech built by Edison and Telsa, Kintoki's Golden Bear-Go. Zeus learned of Kirschtaria's plan to betray him, so he planned to absorb Magellan's mana early to expand the Lostbelt himself. He quickly defeats most of Chaldea's allies, and battles the Golden Bear-Go. The mech is nearly destroyed, but Kintoki uses to the defeated Servants' Spirit Cores to summon Ares from the primary history. Ares becomes mech using the Golden Bear-Go as a base. He reveals he came in response to Achilles' heroic sacrifice during Atlantis, and to Ritsuka's bond with various Roman Servants. Zeus is eventually defeated, with Caenis dealing the final blow that sends him plummeting. Vitch steals his Authority to fully transform into a Beast. Suddenly, Chaos emerges from a tear in the sky. Musashi rides on top of the Shadow Border as she charges her Noble Phantasm, while Quirinus ensures it gets closer enough. Her attack succeeds in destroying Chaos, but it erases her Spirit Origin from Chaldea's records. This renders her permanently unable to be summoned, as she was never recorded in the Throne of Heroes.

Later, Kirschtaria forces Caenis with a Command Spell to rejoin him. It is revealed the Alien God trapped him in simulations depicting A-Team's completion of the Grand Order. He plans to turn humanity into hybrids of humans and gods, similar to how people in the Lostbelt are merged with Zeus' nanomachine, so humanity can move forward truly united. In order to achieve this, he needs the power of Magellan, so he hides the Titan Atlas inside it. He plans to stop the Alien God's descent, and simultaneously Atlas will trigger a massive spell from Magellan to ascend humanity to their new form. However, the Crypters will perish due to their pact with the Alien God.

While Chaldea fights Kirschtaria and Caenis, Douman attacks Kadoc Zemlupus for helping Edison and Tesla create the Golden Bear. Before he is critically wounded, he warns Ritsuka n how Zeus's nanomachine network is dispersed, which tips them on how to disrupt it. While Scandinavia Peperoncino chases Douman in revenge, Rasptuin brings Kadoc to the Shadow Border to save him out of a promise to Anastasia Romanova. Peperoncino eventually catches up to Douman, and permanently destroys his shikigami to make him unable to escape any future battles..

Meanwhile, Kirschtaria is finally defeated, and he blocks Beryl Gut's attempt to assassinate him. Beryl then reveals a higher authority launches Rhongomyniad whenever he announces his presence, and a blast from it is currently on its way. His presence was previously Aphrodite since she supported him out of disinterest in this Lostbelt, and sensing there is someone similar to her in the English Lostbelt. Kirschtaria blocks Rhongomyniad with his magecraft, but leaves him open to Beryl's attack. Peperoncino vows revenge on him and escape to link up with Daybit Sem Void. Before he dies, Kirschtaria uses his Sirius Light to repulse the descent of the Alien God. He pleads with Ritsuka to ensure the English Lostbelt nor the South American Lostbelt do not rewrite the primary history. Caenis arrives, so Beryl calls Vitch and takes a seed from the dying Magellan. The two are then presumably transported to the English Lostbelt by the witch Beryl called to. Then to everyone's shock, a figure similar looking to Olga Marie Animusphere emerges from Magellan. Trismegistus's sensors detect her as Beast VII, the reason why Orion was originally summoned. She names herself U-Olga Marie, and declares herself to be the Prime Minister of Earth.

Participants

Servants

Designation	Identity	Affiliation
Rider	Leonardo da VinciWP (Child)	Ritsuka Fujimaru
Ruler	Sherlock HolmesWP	Ritsuka Fujimaru
Assassin	Charlotte CordayWP	Ritsuka Fujimaru
Archer	OrionWP	Ritsuka Fujimaru
Lancer	CaenisWP	Kirschtaria Wodime
Rider	MandricardoWP	Ritsuka Fujimaru
Rider	Bartholomew RobertsWP
Saber	JasonWP
Rider	OdysseusWP	Kirschtaria Wodime
Rider	Francis DrakeWP
Assassin	Mochizuki ChiyomeWP	Ritsuka Fujimaru
Caster	MedeaWP (Child)
Lancer	HectorWP	Ritsuka Fujimaru
Archer	ParisWP
Rider	AchillesWP
Archer	ChironWP
Saber	MordredWP	Ritsuka Fujimaru
Berserker	Minamoto no YorimitsuWP	Ritsuka Fujimaru
Rider	Sakata no KintokiWP	Ritsuka Fujimaru
Berserker	FrankensteinWP	Ritsuka Fujimaru
Saber	Miyamoto MusashiWP	Ritsuka Fujimaru
Berserker	CaligulaWP	Ritsuka Fujimaru
Archer	Nikola TeslaWP	Ritsuka Fujimaru
Caster	Thomas EdisonWP	Ritsuka Fujimaru
Caster	Helena BlavatskyWP	Ritsuka Fujimaru
Lancer	QuirinusWP	Ritsuka Fujimaru
Saber	Castor and PolluxWP	Kirschtaria Wodime
Ruler	AstraeaWP
Rider	EuropaWP
Alter Ego	Ashiya DoumanWP	Beast VII
Alter Ego/Beast	Tamamo Vitch	Beast VII
Alter Ego	Rasputin	Beast VII
Alter Ego	MuramasaWP	Beast VII
Beast	Goetia	Himself

Non-Servants

Designation	Identity	Affiliation
Fantasy Tree	Fantasy Tree Atlas
N/A	EchidnaWP
Crypter	Kirschtaria Wodime
N/A	ArtemisWP
N/A	HephaestusWP
N/A	DemeterWP
N/A	AphroditeWP
N/A	PoseidonWP
N/A	ZeusWP
Crypter	Kadoc Zemlupus
Beast	U-Olga Marie
Crypter	Beryl Gut
Divine Spirit	Ares	Ritsuka Fujimaru