Mari, who had no sex life with her husband, felt depressed because she felt unattractive. Her father-in-law, seeing her distress, suggested she seduce him with sexy lingerie. Attracted by Mari's lingerie pose, he repeatedly begged her, "Please, just let me penetrate you for one minute." Mari eventually agreed. Although it was only a minute, the intense pleasure of her father-in-law's penis and the vigorous thrusting caused a fierce battle between reason and pleasure. Even after a minute, she couldn't help but move her hips, allowing her father-in-law to continue penetrating her. Finally, even with her husband in the next room, she actively pushed her father-in-law down, reaching orgasm by moving her hips, saying, "I love my father-in-law's penis..."