Yuu's voluptuous, ripe curves are irresistible. Tanaka and Yamada decide to have a study retreat at their homeroom teacher's house. However, Tanaka becomes captivated by the teacher's wife, Yuu, and can't focus on studying. One night, after witnessing Yuu's sexually frustrated masturbation, Tanaka takes advantage of the teacher's absence and enters into a forbidden relationship with her. When Yamada finds out, he blackmails them into a threesome (3P), but.
