The Detective Is Already Dead, Vol. 11 -

I want to protect my friends. If I can't do that, I don't mind being an enemy of the world instead.Having learned the truth of the Akashic records, Kimihiko Kimizuka, the Ace Detective, and their companions reach the System, the final piece needed to restore the world's missing history. There, they recover all their memories of the Great Cataclysm, and Kimihiko is reminded of a promise he once made that will help him awaken the sleeping beauty and get their happy ending. However, the Singularity is forced to make an ultimate choice... The detective is already dead--but there's no way Kimihiko is going to let it end that way. Even if people end up calling him the Great Cataclysm!