The class president of Moriguchi’s former class, Mizuki, writes a letter to her to tell her what has happened since her retirement. Naoki Shitamura (B) did not show up to school, whereas Shuya Watanabe (A) acted as if nothing had changed. Their new teacher, Werther, enlisted Mizuki’s help to visit Naoki and encourage him to come back. His mother became less accepting of Werther and Mizuki’s visits over time. Werther found out Shuya was being bullied, and Mizuki’s classmates forced her to participate, believing she snitched. Mizuki later revealed to Shuya that after the day of Moriguchi’s confession, she had tested the milk cartons to find that there had not been blood in them, which Shuya had confirmed with his own blood test. He then weaponized his fake illness to end the bullying. The two then began a relationship. Shortly after Werther and Mizuki’s last visit to Naoki’s house, Naoki killed his mother.
