Mizuki is a final year student, and she is in love with a mature man who has a stable job. When her boyfriend suggested moving in together since she is about to graduate, Mizuki quickly agreed. The new life with another man made the young student feel very unfamiliar; it was like the life of a newly married couple. Besides doing household chores, she had to serve her man in every way like a housemaid. Especially in terms of sex, the frequency of making love has significantly increased compared to before and is often uncontrolled. Whenever he feels like it, her boyfriend pulls her out to satisfy his needs in every position in the house.