Protagonist Tokorozawa Kouka, girl who was trying committing suicide on the rooftop. "What happened on earth!?" Kouka, Schoolgirl Nakai Yuri who exists in chest, Circumstances are asked while embraced closely.

Yuri, Classmates Higashi-Fushimi Sumire and Nomaguchi Akira From 2 people, the thing that keeps receiving a sexual bullying to worry, it tried to commit suicide. Kouka gets angry at the past bullying of the degree, Nogata Kaede of homeroom teacher although appeal to "Solve students problem among students" not taking notice. There "Tokorozawa Kouka is an assailant of the bullying?" Saginomiya Ayame of student council president it is suspected. After all, it has become a suspension by the unjustified accusation.

In the situation in which the teacher and student government do not become it for the ally, what do you be able to do? Yuri not only... but personally to corner kouka. It determines on revenge.