Mature woman Itsuki seduces 109 gyaru Hikari into lesbianism, embarking on a hot spring trip to Kinugawa. Their journey is marked by humiliating remote vibrator orgasm denial on the train and around the hot spring resort, deepening their bond. At the outdoor bath, they engage in mutual masturbation and passionate kissing with excessive saliva. The film depicts intense scenes of handjob training, anal play, and double-headed dildo lesbian sex, driving both women to ecstasy as their passion intensifies.