A bashful anime boy, desperate to prove his manhood, turns to AV for self-pleasure. Unbeknownst to him, his curious sister spies on him through a crack in the door. As he strokes his hairless virgin cock, she watches, her own hand creeping between her thighs, rubbing her wet slit. Their eyes meet, and an awkward silence hangs in the air, broken only by the sound of their mutual masturbation.