A "project book" once sold in Comiket at the Kirara booth, "Manga Time Kirara Exhibition FINAL" returns as merchandise after 7 years! The magazine's characters visit the final Kirara Exhibition in this comic anthology book with all newly-written chapters! (Source: Kiraraten)

A sequel set after the ending of Gakkou Gurashi! which details the aftermath of the characters.

Set in the year between the events of the first two games, the story revolves around two new characters exclusive to the manga: Tyr and Mizuha, and the mystery of severed Gear parts falling from the sky. Members of the Post War Administration Bureau (P.W.A.B. for short) - the secretive organization responsible for many events in the games - serve as the antagonists of the story. Characters from the games, such as Sol, Ky, Axl, Potemkin and Kliff, also appear, albeit with relatively minor roles. (Source: MAL)