Suddenly, Reina (Reina Nanjo) is caressed by one of her students during class, and she is torn between frustration and pleasure. While playing the role of a strict teacher at school, Reina enjoys a life of indulging in affairs with her students behind the scenes, but the students' desires escalate and they eventually start to play pranks on her even during class. If this is discovered, she will lose both her family and her teaching career. She knows it in her head, but she can't stop her body from getting hot from her student's caresses. Reina, too, is addicted to the thrill and sense of immorality.