M-kun stumbles upon girlfriend Ayumi in the throes of masturbation, her fingers dancing over her clit. Unable to resist her allure, he joins her, his throbbing cock finding its way into her eager hands. As she strokes him, he reaches for her vibrator, teasing her pussy with it before pushing it deep inside. Ayumi moans, her body writhing as the toy brings her to the brink. M-kun, unable to hold back, fucks her hard and fast, her cries of pleasure echoing as she climaxes.