In their fourth year of marriage, Tao's sex life with her husband had become awkward due to his erectile dysfunction. Learning this, her lustful father-in-law, Tatsuo, schemed to satisfy his own desires by enjoying her indulgent body… One day, Tatsuo pretended to accidentally drink the erection pills Tao had prepared for her husband. As she panicked, he insisted she stroke him to relieve his erection… Tao complied and brought him to climax. Having tasted victory, Tatsuo showed off his erect penis again…
