Ryo and Kaho are close mom friends. One day, during the usual tea party, the topic turned to sex life. Kaho seems to be having fulfilling sex with a young man she met on an app, and even though she thinks it's shady, she decides to just do it once and starts using the app. Yuzuru, a student he met through an app, awakens to the pleasure of submissive domination. And Yuzuru is similarly drowning both in mind and body in the bewitching and sexy attacks of the married woman.