To fulfill a client's desire to explore a relationship with her brother-in-law, Takagi Takeshi devises an incest scheme. Convinced by his younger brother's wife's supposed affection for him, the brother-in-law brings her to a massage parlor, where she receives a sensual massage in a vulnerable state. Though hesitant at first, she writhes her body as her senses gradually awaken. Her shaved pussy, treated as her husband's personal fetish, is touched and stimulated, heightening her arousal. When her brother-in-law appears wearing a blindfold, she is made to suck his erect cock, losing all awareness as she fully accepts his penetration and is vigorously fucked. Riding him in cowgirl position, she pleads, "Please thrust harder," and as he pounds into her, she ascends once more to climax. This entire sequence unfolds exactly as planned, fulfilling the client's deepest desire.