Tsumugi, a married woman, works at a housekeeping agency to save up money to buy her dream home. As both her husband and wife work, Tsumugi and her husband live a life of mismatched relationships, and as a result, they gradually become sexless. She loves housework and finds fulfillment in her job as a housekeeper to release her unfulfilled sexual desire. One day, while she was cleaning as usual, the client's son immediately and raw-fucked her. Although she resists verbally, Tsumugi is immersed in the pleasure she hasn't felt in a long time, and repeatedly climaxes while her asshole is spread open...