The Detective Is Already Dead Novel Volume 8 is written by Nigozyu with illustrations by Umibouzu.

Kimihiko Kimizuka was once the assistant to two ace detectives, and after achieving a miracle, the sequel was ordinary life. The Ritual of Sacred Return was supposed to be the moment world peace was achieved—but instead, it was discovered that this was a product of false memories. As the search for the truth begins, it seems the memories of another Tuner, Rill, may hold the key…