Anna, who was at school for summer school, was remembering a certain incident. A few years ago, Sasaki, a student who had a crush on Anna, took his own life because he was unable to respond to her feelings. Anna's wounds had healed, but she was worried about the change in the atmosphere of the class since a student named Yamamoto transferred to the school in the middle of the first semester. And during summer school, her fears were realized. Anna was held in a headlock by the students and heard shocking words from Yamamoto...
