In this adult school role-play, Kanna and her husband teach at the same school and enjoy good relationships with each other and their students. One afternoon, her husband catches adult “student” Iizuka extorting a classmate and loses his temper, striking him despite Kanna's attempt to intervene. Wanting to avoid a scandal, Kanna secretly apologizes the next day. Iizuka refuses to forgive the corporal punishment and orders her to strip, beginning the revenge that will steal the teacher away from her husband.