A psycho rapist lurks in the house! The third shocking controversial work! His step-sister is a high school girl who was born when his father remarried. Unable to resist her defenseless appearance, his step-brother goes on a sexual rampage! His step-sister desperately runs around the house, in his sister's room, the hallway, the entrance, the closet, the living room, the sofa, the Japanese-style room, the stairs... but no matter where he runs, he is always caught and raped over and over again! The sexual shock of his step-brother never ends, no matter how many times he cums inside her! No matter where he hides, he always finds her and cums inside her over and over again, no matter how much she resists!