Kaho is a female teacher who is invited to her home on weekends to give supplementary lessons to students whose grades are not improving. Her husband was on a business trip that day, so she was planning to study quietly, but the students started slacking off and ended up going to bed, disappointed. Then, late at night, the students carried out a rape plan in which they attacked the teacher while he was asleep, saying, ``I want to fondle the teacher's breasts.''