Rika Usui, who has model-like proportions, has both arms grabbed and artificially fixed, and is made to cum over and over again in a standing doggy style, reaching an infinite orgasm! She trembles like a newborn fawn, but her vagina is thrust deep with relentless pistons, and she continues to cum even if she collapses. As she is skewered by a dick, her hips arch back in pleasure, and her mind is taken over by an unprecedented sensation.