After her husband's passing, Ryouko began adjusting to living with her daughter and son-in-law, enjoying a peaceful and happy life. One day, while cleaning, she noticed her son-in-law's crotch and felt her heart race at the sight of a man's body she hadn't seen in so long. A few days later, she accidentally witnessed him masturbating late at night, completely captivated by his hard, erect member. From then on, Ryouko found herself increasingly drawn to his crotch. One afternoon, while retrieving laundry, she entered his room and found him napping. Her eyes were once again fixed on his bulge. After a moment of inner conflict, she gave in to the overwhelming urge to see it up close and quietly approached him. Gently poking it at first, she became mesmerized as it grew larger, and before she realized what she was doing, she had taken it fully into her mouth, drooling uncontrollably as she indulged in the forbidden act.