Dr. Stone's insatiable hunger for Kohaku's lush curves leads them to a secret tryst in the lab. She teases him with her massive, round breasts, rubbing them against his body, while he greedily squeezes and sucks on her hard nipples. Kohaku's pussy throbs with anticipation as Dr. Stone's hands explore her body, eventually finding their way to her wet slit. He fingers her expertly, making her moan and beg for more. Dr. Stone obliges, plunging his thick cock into her, fucking her hard and deep until they both reach a explosive orgasm.