Kaori, a teacher at Teito Seminar, one of the most prestigious cram schools in Japan. In her class is a problematic student named Okumura Yuma, who dreams of entering medical school. Yuma shows no interest and performs poorly, causing Kaori great frustration. However, since his father is a major investor in Teito Seminar, the instructors are under immense pressure to improve his grades. Under this pressure, Yuma forces Kaori into private tutoring sessions, escalating into explicit situations where he sexually humiliates and violates her body.