On a sweltering afternoon, a salesman meets married Minami in a residential neighborhood. She invites him home and appears ready to sign a contract, but her condition is that she gets to use him for reverse sexual favors. She aggressively closes in as sweat runs down her neck and her mature allure fills the room. Though he knows it is forbidden, her relentless riding makes him creampie without thrusting once, and from then on she controls his body and mind while draining him of seed again and again.