Mei no Naisho

Mei Haruna, an effeminate boy raised as a girl by his witch mother, enrolls at an all-girls high school after her death. He moves into the school dormitory with Abel, his talking familiar cat, and shares a room with Fuuka Honjou, a member of the public morals committee. A magical display in the dormitory bath reveals to Mei’s new friends that he is male, a discovery that shocks him despite his awareness of the physical differences between himself and other girls. The principal allows Mei to remain at the school, and the next day he apologizes to his classmates for hiding that he is a witch and tells them he is a boy. The students soon accept him and are impressed by his magic.