Fate/Extra CCC: Fox Tail

Waking up in a strange virtual world with no recollection of the past, Hakuno finds himself forced to fight for survival in a war he does not understand for a prize beyond value; the opportunity to have one's wish granted. With only an enigmatic "Servant" by his side, Hakuno Kishinami will have to face both friends and foes in battles to the death in order to not only gain possession of a mysterious object known as the "Holy Grail," but also to find the answer to the most important question of all: "Who am I?"

The story is set on the Far Side of the Moon Cell, where BB used her abilities to create the Sakura Labyrinth. She brought over various Masters and Servants from the Moon Cell Holy Grail War on the Near Side, some taken instantly before their deletion and others brought during the sixth week. Note: Includes nine extra chapters.

A gag manga featuring numerous characters from various Type-Moon works in a school setting.

The stage is set on an ocean oilfield base, Seraphix. A hell that tries to imitate the Holy Grail War of the Moon. A pleasure prison that you can never escape from unless you're the last one standing. There's not much time until it reaches the limit and collapses. What lurks within the depths of the "Ego" that desires to dance --- This is the adaptation of the Epic of Remnant Chapter 1.5 from the mobile game, Fate/Grand Order.