At a public bath just before closing time... ~Sweaty sex with a younger man in immoral steamy sex~

Nao and her husband took over the public bathhouse from their father-in-law, who retired when they were old and had passed away. However, the two of them were very busy running the business, and before they knew it, the couple's time had passed, and they continued to live a life of misunderstandings. One day, Takahashi, a regular customer who always comes close to closing, ends up working at a public bath... As Nao spends more time with him than her husband, she becomes more intimate due to loneliness. Despite feeling guilty, her body remembers the pleasure of having sex, and she moans as she is repeatedly penetrated by a cock in the large bath...