Close friends Ririko and Kana are chatting over tea when the subject turns to their sex lives. Kana reveals that she has been enjoying satisfying sex with a younger adult man she met through an app. Though initially suspicious, Ririko decides to try it just once. Ryu, an adult student role-play match from the app, proves obedient and awakens Ririko's taste for control, while he becomes equally intoxicated by the two married women's seductive, assertive attention.