I received a sudden email from a senior who I have always been helping with. "I want to use it while waiting for a delivery health girl, so could you lend me your room?" The delivery health girls as they came one after another relaxed like their own room, and even though I was a man, they started not only showing their panties and breasts, but also changing clothes... They are mistaken for a part-time job and are forced to use as a practice table, and an extremely erotic harem sex life begins with bolder, defenseless, busty delivery health girls, who are even more erotic than they imagined!