Rei, a married woman who teaches at the same school as her husband. One day, she receives a report from her husband that Tonda, a student in her class, seems unenergetic. The next day, her husband witnesses a student named Yamaguchi bullying Tonda. At that moment, her husband rushes to protect Tonda, and Yamaguchi gets injured. After school, Rei also summons Yamaguchi and Tonda to find out what happened, but Yamaguchi threatens to report the incident to the Board of Education using his injury as an excuse and orders her to show him her breasts if she doesn't want that…
