Sara, a female teacher who secretly had an affair with her student, Hashimoto. She is so absorbed in the thrill of dealing with people other than her husband that she often asks for one another at school. However, she was unlucky enough to be found by Ueda, an inferior student in her class, and allowed her body as an exchange condition. Of course, she can't be done just once, and Ueda follows her around with a photo evidence of her. She was even known by her bad friend, Hirai, and finally decided to call Hashimoto to her after-school classroom.
