Although he is old, the father is still strong and has a strong desire for sexual pleasure. Since his son married Shinoda, he has been secretly watching them engage in sexual activities, longing to experience the vigor of his youth once again. Fortunately, Shinoda is obedient and understanding, always fulfilling his desires. She knows exactly what he wants, including his desire for her slender body. As a good daughter-in-law, she is willing to do anything to satisfy his desires and make his life happier and more fulfilling.