Minagawa saves Yugo and the truth behind the case 20 years ago gradually becomes clear. Keigo is suspicious. Yamazawa has a violent past and wouldn't have poisoned Umino. He hears about an incident that occurred around the apartment Yamazawa lives and rushes there. Meanwhile, Kuno visits the hospitalized Shiori and meets Minagawa. He becomes suspicious that Yugo had a collaborator. On the other hand, Satomi worries about Yugo's injury but can't do anything due to Keigo's suspicions. Satomi's neighbor, Nemoto, realizes she knows Yugo.