Chizuru Shiina has had a crush on her teacher, Tsukino-sensei, for quite some time. She would do just about anything for him! Her love is promptly put to the test. Tamura, another of her teachers, has been embezzling money from the class treasury for a while. Now he tries to pin it on Tsukino, though he quickly remembers that this won’t be possible - the cameras in the banks would give him away. Luckily for him, Chizuru catches him at it and believes his lie that it is Tsukino who is embezzling money. To save her beloved sensei, Chizuru gets involved in a relationship with her sadistic teacher and gives him her virginity. But that is not the end of their relationship, for much worse things await Chizuru, as Tamura plans to take out all his frustration on her…