AV director Murayama Kyosuke went on a private filming trip with an acquaintance's married woman. Since it was a day trip, the married woman participated casually... Ayako (alias), 32 years old, married for 9 years, with one child. 'Today my parents are watching the kid, so I haven't been to a hot spring in ages. It feels liberating!' Her husband, who works at a publishing company, is always busy and has an irregular schedule, leading to a life of missed connections. The married woman, dissatisfied with their sex life twice a month, had given up on improving her marital life. About a year ago, the married woman's child started attending the karate class directed by Murayama. Gradually, they grew closer, and the married woman accepted Murayama's invitation to go to the hot spring. 'This is wrong... But I'm really going to do this?!' The married woman, feeling guilty, gave her body to a man who was not her husband... and writhed.
