GOS presents "Documentary: Consanguineous Incest," starring Moe Hazuki. When requested by his older brother to have sex with his 20-year-old college student sister—who is 16 years younger—Takeshi Karagi carries out an incestuous plan. The younger sister, introduced to a massage parlor job, enters a hotel room for a session. On the first day, only light bodywork occurs, but a week later, her guard lowered, she receives a full-body massage completely naked, her genitals becoming wet. Blindfolded, she's surprised when a penis penetrates her, yet quickly begins moaning and reaches climax in doggystyle. Unaware that the man has switched to her real brother, she writhes in ecstasy. Later, during her final shift, she is mounted in cowgirl position, vividly depicted as she rides him and orgasms repeatedly.