Teacher, Yumi Shimaoka. I teach biology at a school. At first glance, he was gentle, but he was full of a sense of justice, and he was a valuable teacher who was able to scold his students, which is rare these days. He is also an advisor to the student council and is popular among the honor students. However, she is troubled by Kohei Tsujita, a student who repeats acts that make her angry on purpose. Then, Yumi has the worst day of her life. Tsujita plunges Yumi into a feast of acme from his distorted affection. Yumi's hidden sexuality is exposed.
