" kaede akamatsu, angie yonaga, kokichi ouma, and tenko chabshira go to hopes peak academy, and live in an apartment as roommates. a series of murders start to appear, including their friends. all of them die in a grotesque manner, and all in the same way. the person or people who are murdering the students among the class, and tenko, kaede, angie, and kokichi, are up to solve the case "