Her boss's huge cock is a perfect hit! She sexually harasses a frustrated married woman with big breasts every day. Even if she resists the persistent old man, he doesn't stop. He thrusts his huge cock into her and she screams, "Please stop! Something that big won't fit in!" and cums instantly! Her body and Kokoro are taken over and the pleasure training continues and escalates every day... She turns into an obedient masochistic woman who is a human toilet. "I can't do anything without this big one..."