Misuzu Hara works as a high school teacher and prefers to keep a distance from her students. In her past, she was raped by her best friend's boyfriend Hayafuji after he found out she liked him. She didn't report the crime to the police and she didn't tell anyone else what happened. She still suffers from the trauma from what happened, but she continues to have a forceful relationship with Hayafuji who is now her best friend's fiancee. One day, a rumor spreads that her student Yuki Niizuma is in a secret affair. Misuzu Hara, as his teacher, has a meeting with him to provide counseling.Meanwhile, Misuzu is approached by one of her homeroom students, Niizuma, who wants advice about a sexual matter. For some reason, she partially sympathizes with him, and confesses her deeply suppressed feelings to him. Eventually, Niizuma opens up to her completely, and develops feelings for Misuzu, who accepts him as he is. This romantic quadrangle gradually becomes even more misshapen, warping and and twisting uncontrollably...