Glass Eye

As the class goes on its trip, Kōichi and the others listen to the repaired tape, in which Katsumi explains he accidentally killed someone in a fistfight. When he couldn't find the body the next day, he discovered no one else knew of the dead one, leading him to the conclusion he had killed the "extra student", believing that is what can stop the calamity. During dinner that night, as Izumi starts blaming Mei for the deaths, a boy suffers an asthma attack. Chibiki offers to drive him to to the hospital. Later that night, Mei invites Kōichi to her room to show him the haunted Class 3-3 photo of 1972, before revealing her cousin, Misaki Fujioka, was actually her twin sister, as she herself was taken in by her aunt when her pregnancy failed. This brings up the prospect that Fujioka's death in April was the first that occured, meaning the extra student was already in the class before Kōichi arrived. Mei then explains how her doll's eye lets her see the "colour of death", which is her proof that Kōichi is not the "extra student". Before she can reveal who the extra is, Naoya bursts in, saying he may have just killed someone innocent.