Yuuka, a junior college student, is troubled because she doesn't understand her own erogenous zones. Thus begins her exploration, as she's stimulated with a vibrator and gradually becomes wetter. Her slick pussy emits a lewd scent, and being completely shaved adds another layer of allure. She's overwhelmed with pleasure from a gooey blowjob as a special reward, revealing the astonishing secret that her entire body is actually one big erogenous zone.