A shocking story of a brother luring his own sister into the adult video industry! F, a male AV actor who took his younger sister's virginity when she was eight years younger, has been estranged from his family but reunites with her after three years. The sister, deeply drawn to her brother and unable to forget her first sexual experience with him, chooses to accept him. When their mother suddenly returns home, the panicked pair hide inside a closet. Suppressing their moans to avoid being detected by their mother doing housework just beyond the sliding door, they still reach climax. A documentary-style work intertwining complex emotions of sibling love and taboo!