Tsubaki lives with her husband and son. After 30 years of her marriage, she still continues to have nightlife with her husband, whom she loves. However, recently, her husband has become weak, and she can not easily orgasm. Tsubaki was hiding from her husband and masturbating alone every time. One day, her son came home with mud. Tsubaki tries to take care of her son who has fallen asleep at her doorstep. Before she knew it, her son's panties had grown so much that she reached out and even straddled them...
