Shishigami returns to Shion's house, overwhelmed by recent events. In a flashback, Shishigami waits for a train in a crowded underground station, and a middle-aged man steps in front of it. Later, Shishigami admits to Shion that he is the killer, but she refuses to believe it. He tells her about the railway incident, the pleasure he felt when a life was erased, and how alive he now feels at taking other people's lives...