As Class 3-3 goes on its trip to the Yomiyama mountains, Kōichi and the others listen to the repaired tape, in which Katsumi explains he accidentally killed one of the surviving students in a fistfight. When he couldn't find the body the next day, Katsumi discovered no one else remembered the dead student, leading him to the conclusion that he had killed the "extra one", believing that is what can stop the calamity. During dinner that night, as Izumi starts blaming Mei for the deaths, Daisuke Watui suddenly suffers an asthma attack. Chibiki offers to drive him to to the hospital. Later, Mei invites Kōichi to her room to show her the haunted Class 3-3 photo of 1972, showing Yomiyama Misaki; before revealing that her cousin, Misaki Fujioka, was actually her twin sister, as Mei herself was taken in by her aunt (Kirika) upon her stillbirth. This means that Fujioka's death in April was the first of this year's calamity, meaning the "extra one" was already in the class before Kōichi arrived. Mei then explains that her doll's eye lets her see the "color of death", her proof that Kōichi is not the "extra one". Before she can reveal who it is, though, Naoya bursts in, claiming he may have just done something terrible.