Sara, a female teacher who secretly had an affair with her student, Hashimoto. She became addicted to the thrill of being with someone other than her husband and even engaged in intimate acts within the school premises. Unfortunately, she was caught by Ueda, the class's underachiever, who then demanded sexual favors as a condition for his silence. Naturally, this did not end after one encounter; Ueda continued to harass her using the compromising photos. Sara's bad friend, Hirai, also found out, and eventually, she summoned Hashimoto to the classroom after school…
