Nishijima Kotsuo

Since the early death of his parents, Takami Akitoshi has lived alone with his beautiful elder sister, Hitomi, while concealing his dirty desires for her. One day, a mysterious girl named Mina enters his room. She introduces herself as Death and explains that she came to take his soul because he had reached the end of his lifespan. Hearing his screams, Hitomi runs in and, after the situation is explained to her, asks Mina to spare him. Mina, moved by her earnestness, tells them that if Takami fathers a child within a week, she will let him live another 10 years. Hearing her condition, he turns his face to Hitomi...

Pas facile la vie pour Erika et Yuto, condamnés à vivre ensemble suite au remariage de leurs parents sans pour autant avoir de vrais liens de sang. Entre les absences répétées de son père et le douloureux souvenir de sa défunte mère, Yuto se renferme sur lui jusqu'à ce qu'Erika découvre les affres qui le tourmentent et décide de lui donner un peu de chaleur humaine. Très vite, la complicité s'installe et les caresses intimes aussi. Mais une de leurs professeurs surprend les deux jeunes étudiants en plein ébat et décide de faire chanter Yuto pour lui donner des leçons très personnelles...