Hentai taii: Iyarashii seikatsu (2005)

Medical student Hirotake was fascinated by photographs of figurine dolls depicting various sexual positions. As he and his girlfriend Mizuki engaged in sexual activity in the same poses as the dolls, Hirotake became aroused and begged Mizuki to become a doll with him. Hirotake was captivated by the perfect body of Reimi, who bared her own body in an attempt to break free from his obsession with dolls and lead him to love for humanity, but....