Anime Sex - Shoujo

Based on the erotic manga by Akatsuki Myuuto. Kengo returns to the hometown he left seven years ago after learning of his mother's death. There, he meets a group of young girls who are his half-sisters from his father's mistresses. These girls have never been permitted to leave the house and are terrified of the outside world. In order to release the girls, Kengo confronts his father, but he remains scared of him.