Anna, who went to work at school for a summer course, remembered an incident. years ago-. She couldn't respond to the feelings of her student, Sasaki, who was in love with Anna, and Sasaki took his own life. Anna has healed from her wounds, but she is worried about the change in class atmosphere since a student named Yamamoto transferred in the middle of the first semester. And her anxiety hits the mark in her summer course. Anna, who was strangled by her students, heard shocking words from Yamamoto's mouth.
