Rei, a teacher who cares about her students, is a bit of a natural school Madonna who forgets to put on her bra and unconsciously presses her breasts against her students. Yuta, a student who is approaching a sensitive age, is unable to concentrate on his studies because of Rei's behavior, and his grades have been dropping. Rei, worried about this, decides to have sex with Yuta, who comes to her for extra lessons one day. He made a suggestion...