Satoru rescues Airi from the fire engulfing her home. After confirming that the fire is related to his mother’s death, Satoru relies on a note she left behind to make contact with Sawada, a former reporter for TV Ishikari. Sawada shares that Sachiko knew the identity of the serial killer from 18 years ago and surmises that the killer always sets up an innocent person to be his patsy. When Satoru reads Sawada’s list of suspects, he realizes something else that’s important about the killer…