In 2010, Dr. Romani Archaman was posted to Chaldea, where he becomes the primary doctor for a young girl. His patient, Mash Kyrielight, is a powerhouse but is more interested in books, Japan, and Sherlock Holmes. This collection of shorts by beloved Type-Moon artist NAKATANI focuses on the "Absolute Demonic Front" arc of F/GO Babylonia, the latest game in the FATE/Grand Order franchise. A prequel of sorts, this arc focuses on the origins of the game's most iconic character, Mash. This is the destined era where humans and gods part ways - this is the start of the final battle.