Married woman Ayumi who feels pain due to sexlessness with her husband. She masturbates to get rid of her sexual desire, but she can't get rid of her loneliness. Meanwhile, her son-in-law witnesses an erect cock. The forbidden relationship between the two began when he unintentionally asked, "Would you like me to help you pull it out?" Ayumi, who was fascinated by her young and lively body, which was different from her husband, eventually knew her joy when semen was put out in her vagina.
