Ayaka Natsume, her son's homeroom teacher, and her husband, Natsume, knowing full well that they shouldn't be doing these things, are still drawn to each other and have frequent clandestine meetings. (NTRH-015)

Even after marriage, Natsume chooses to remain on the podium. However, his already busy teaching life makes balancing family and work difficult, and his relationship with his wife has cooled. In this situation, he visits the home of a student who has stopped attending school. The father's struggle as a protector... The two lonely souls are drawn to each other, knowing full well that they shouldn't do it, yet they still sink into an inescapable quagmire of incest.