Ryo and Kaho are good mom friends. One day, when she is having a tea party as usual, the topic turns to her sex life. Kaho seems to be having a fulfilling sex with a young man she met on the app, and Ryo, who thinks it's shady, starts the app as she is swept away. Yuzuru, a student who got acquainted with the app, wakes up to the pleasure of being obedient and dominating. And Yuzuru is also drowning in the bewitching and sexy attacks of married women, both in mind and body.