"Ane Haramix" is a hentai OVA series about Takami Akitoshi, who lives alone with his beautiful older sister Hitomi after their parents' early death, while secretly harboring lustful desires for her. When Death, a mysterious girl named Mina, arrives to claim his soul, Hitomi pleads for his life. Mina offers a deal: if Akitoshi impregnates Hitomi within a week, his lifespan will be extended by ten years, leading to a provocative and taboo supernatural romance.