Akira Shindo has been transferred to Fuga High School where she is almost raped by a group of young thugs. She meets Mahiru Suruga, a mysterious but beautiful girl with both arms in bandages. Mahiru is aloof and cold. Her motto is, "I will neither rely on others nor have anything to do with others." The two girls get caught up in a series of incidents at school and Mahiru, a strong fighter, always manages to sort them out. Mahiru starts to soften up, as she becomes friends with Akira, who loves to stick her nose into other people's business.