Sara, a female college student who applied to pass the idle hours at school, has a cute, ladylike appearance that hides her curiosity for lesbian sex and a deeply kinky side. She is guided by Kaede Kochi, an AD who specializes in women and fully understands female pleasure. Entrusting everything to Kaede, Sara undergoes a sensitivity check that quickly proves intense. Given a remote-controlled vibrator from overseas, Sara writhes her hips and experiences multiple powerful orgasms. Wanting to feel the thrill of outdoor stimulation, she is led to the rooftop with the vibrator still inserted. Alone together, Sara and Kaede enjoy a relaxed outdoor session. Later, a male performer joins them, leading to an unconventional threesome where Sara is penetrated by the man while passionately kissing Kaede, creating an intensely erotic atmosphere. Finally, the two women are left alone in the bath, indulging in plenty of intimate lesbian kissing.