Ikenoue Takumi, the protagonist, is the only male student who entered the former prestigious girls' school, Okyo Gakuen, as a special scholarship student. Kisshouji Arisa, the highest authority in the school, and her secretary, Kuga Yuriko, were planning to sacrifice the protagonist and control the minds of the female students in the school as the owners of the ideology of female honors. When the protagonist learns that Arisa and Yuriko are the cause of his unreasonable bullying, he steals the magic hypnotic tool, the music box, and attempts revenge.