Ryo Arimori, a married woman, travels with her husband and unexpectedly meets a black man at a hot spring inn. Mesmerized by his huge cock, she instinctively surrenders her body to him. Overwhelmed by a size she's never seen before, her body begins moving as if guided by primal instinct. His glossy, massive cock thrusts violently into her pussy, making her convulse as she's completely knocked out. It's easy to imagine just how deeply this transgression will be etched into her mind and body.