Fate/Grand Order Absolute Demonic Front: Babylonia (Original Japanese Version)

The year is 2010 AD. Romani Archaman has been posted to Chaldea, where he becomes the primary doctor for a young girl. Mash Kyrielight, Chaldea's second successful summoning experiment, is interested in the word "Senpai."

At Chaldea Security Organization, the final Master of humanity Ritsuka Fujimaru and his Servant Mash Kyrielight have journeyed through six regions of differing eras in order to retrieve their future.

Fujimaru and Mash head for Uruk, led by a young man named Enkidu who has volunteered to be their guide. However, within the forest, Mash feels an ominous feeling in the air as Enkidu walks down a path different from the direction of their destination.

Fujimaru's entourage successfully has an audience with the wise king Gilgamesh ruling over Uruk.

Fujimaru recalls his journeys in the other Singularities, particularly the regret he feels for those he couldn't save. Fujimaru finds himself questioning his decisions. Meanwhile, Gilgamesh dispatches him to investigate the city of Ur under royal orders.

Fujimaru and company are dumbfounded by Gilgamesh's sudden visitation of the Chaldean Embassy. There, they are given a new request from the king which is to investigate the Persian Gulf. Merlin and Ana cannot join as they have no travel permits.

Finishing up the investigation at the Persian Gulf, Fujimaru and company are given a new order from the king. The new order is to retrieve a clay tablet that Gilgamesh had previously lost in the city of Kutha.

Fujimaru successfully retrieves Gilgamesh's clay tablet, and within a deep slumber, he remembers his encounter with the King of Mages in London, the Fourth Singularity, which renews his understanding of the importance of the final Holy Grail.

Fujimaru and entourage, in order to rescue the people left behind in the fortress city of Nippur after communications were severed, begin their battle against the fake Enkidu who had been awaiting them.

Fujimaru and entourage have lost Ushiwakamaru and Leonidas I. Upon receiving the report from the group that returned to the ziggurat, Gilgamesh decides it is necessary to conquer the three goddesses in certain order to fight against Gorgon.

Fujimaru and company greet Ishtar to their ranks without hitches, and gain information from Gilgamesh about the key for defeating Gorgon, "the Axe of Marduk" stowed away in Eridu within the southern jungle.

Fujimaru and company ever so easily have Jaguar Warrior join their ranks, and are reunited with the soldiers of Uruk, thought to all be dead, outside Eridu. Learning of their safety, the group sees a way to defeat Quetzalcoatl.

Due to overwork, Gilgamesh finds himself in the arms of eternal sleep. Fujimaru and the others are shocked by the news. They also hear from Siduri that there have been many reports of deaths from weakness within Uruk.