Marie Moriya is a rather timid girl, who is frequently bullied by her classmates. On top of that, Kanamori, her homeroom teacher who initially defended Marie, has begun to molest her at night in the Old School Building. When some of other students start talking about the seven mysteries of the school and that she may be a Youkai, Marie desperately wishes to become one in order to kill everyone who makes her life a living hell. That wish is about to come true... This entry has a character sheet. A fan translation of the first sound novel has been complete.