[ From Teedotcalm ] The manga is based on Kairi Aotsuki's novel series of the same name. The manga centers on Kanna, a serial killer so deadly that he has been given the nickname "Reiwa-Era Jack the Ripper." He meets a boy named Mikage with features as delicate as porcelain. Mikage tells Kanna, a man looking for love, that he will love him, revealing that he is a vampire.