Absolute Demonic Battlefront: Babylonia/Episode 0

Initium Iter is the prologue episode of the Fate/Grand Order - Absolute Demonic Battlefront : Babylonia Anime.

Summary
In the year 2010 A.D. Romani Archaman has been posted to Chaldea. There, he becomes the primary doctor for a young girl. Mash Kyrielight, Chaldea’s second successful summoning experiment, is interested in the word "Senpai". The interaction between the two gives Mash a reason to hope. That hope becomes a wave and starts to spread.

That is your story, the story of a normal “somebody”. The story at the beginning of a journey that weaves the future.

Plot Details
Inside a mysterious facility, a young girl is transformed into a servent by. She breaks free of her restraints and the security system tries to subdue her. However, she is too powerful for the defensive systems and he scientists refuse to evacuate. Before she can harm them, the girl becomes docile and loses consciousness.

Later on, a scientist from that facility, Romani Archaman, travels through a city and gets spooked by the fireworks. He reminds himself he has to hurry and recalls the various occupations he's worked as over the course of his life.

Currently, he works for Chaldea, a corporation that creatures Psuedo-Servants by using Heroic spirits to possess humans. For ten years, the corporation has been experimenting on fusing a human spirit with a heroic one in a project called Demi-Servant Project.

Mashu Kyrielight that appeared earlier was the most perfect among all their tests. Her body is degrading, but Archaman's boss is okay with that as long as she proves useful. Irritated, Archaman asks for permission to watch over the girl. He meets the girl a few minutes later in her isolated room.

They talk, and Archaman ries to help the girl understand human emotions and the meaning of altruism. He also tells her about her lifespan but she doesn't seem bothered by it either. Two years later, Leonardo Da Vinci is the third hero spirit summoned by Archaman. In 2014, Mashu is still innocent and good despite all the torture she has endured. She only wishes to learn about the good parts of humans.

In 2016, Mash is put on a team of Ray Shifters sent to the past to prevent the disappearance of the future. Her vitals improve and she's allowed to leave the cleanroom. She's drawn to the outside world and readies herself for the coming challenges ahead. Doctor Romani views all the memories of the heroic spirit and is astonished by it.

Characters

 * Romani Archaman
 * Mashu Kyrielight
 * Leonardo Da Vinci
 * Ritsuka Fujimaru
 * Fou