Trap: Depravity After School / Wana: Hakudaku Mamire no Houkago

After her brother's sudden strange death, Raika transfers to his academy to study all the details of the death and investigate the case. Since the school where her brother studied is all-male, she has to pretend to be a boy. As her investigation progresses, she discovers that a group of rapists operates in the academy, which is active only after classes end. Raika learns that her brother was one of them. Trying to justify his actions and not believing that her brother could become like that, she infiltrates the very heart of the lewd gang, but soon she is caught...