Kira Kira☆Labyrinth

Arisu was once bullied by boys as a child and now openly despises men, attending an all-girls high school to avoid them. She believes her fate has changed when Fujimi Kira, another girl who claims to hate men, moves in as her dorm roommate. Both hide things from the strict dorm supervisor, Kamitani-Sensei: Arisu keeps a pet ferret, while Kira is actually a boy. Arisu is shocked to discover this, as Kira is at the school to investigate the supposed suicide of his older half-sister two years earlier. As they share a room, Arisu must decide whether to help him uncover the truth, despite the risks involved.