Ane☆Haramix

Since the early death of his parents, Takami Akitoshi has lived alone with his beautiful elder sister, Hitomi, while concealing his complicated feelings 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, desperately pleads for his life. Mina, moved by her earnestness, presents them with a mysterious condition that could potentially extend Takami's life. This unusual proposition sets in motion a series of complex and intimate encounters that will challenge the siblings' relationship and force them to confront their deepest emotions. (Source: AnimeNfo)