Sachi Usui

The main character of the novel. Modest, shy and somewhat clumsy. Due to its physiological features, feels like an outcast at school and at home. Constantly exposed to ridicule and bullying by some pupils, particularly Kadokawa Ryu. The latter is the cause of numerous injuries and mutilations,lurking under the many bandages and band-AIDS on the body of Sachi. Her father left her and her mother died when Sachi was still a childIn.