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.

Decim visits Nona and tells her that he believes that their way of passing judgment is flawed. Nona sends him another customer, whose case may unravel the mystery of the black-haired woman, and whom Decim chooses to judge without the aid of any memories.