A high-school girl named Mayu arrives at a Japanese-style bar being tended by Ginti. He demands that she play a game against the man in the bar, who she instantly recognizes as Harada, of the boy idol band C.H.A, and she eagerly accepts.

Prior to the arrival of a pair of guests--a police detective and young man raising his sister--Decim wonders if there has been a mistake, since the memories he has received are those of a killer. But despite his protestations, Nona prods him to continue.