Pareto's Miscalculation: Caseworker Murder Case

Satomi is told by a detective, Wakabayashi (Yukiya Kitamura), that Yamakawa's death could result in murder. While visiting the houses of the users who were burned out by the fire without being able to hide their upset, he visited Onodera, but while knowing how trusted Yamakawa was, he was spending an unnaturally long time together (Kako ( Marika Matsumoto) and Satomi's older brother, Kaneda (Yasuto Nasu) and their relationship with suspicious people can be seen.