Mao, whose cute and gentle appearance is her charm, usually seems calm and shy—but suddenly one day she turns to the camera and says, "Wanna see me masturbate? Today's a special treat!" She begins filming herself, slowly stripping off her uniform and changing into a competitive swimsuit, captured in full detail. Getting into the mood, she excitedly declares, "Now watch me come over and over!" She pulls her swimsuit aside and thrusts an extra-thick vibrator deep inside, then hooks another vibrator to the front while using her free hand to massage her perfect D-cup breasts. Moaning "I'm cumming!" she trembles and reaches orgasm. Next up: an eroticism test with Mao! She sensually licks every inch of a passive male partner, then moves on to nipple play, sucking and teasing his nipples while giving him a handjob. Unable to endure any longer, he reaches his limit and erupts in a creampie inside her mouth.