【Sales of 50,000! Super popular doujin circle Chinjao Musume】The older sister of a female student acts as the mother in a large family. One night, seeing her brothers fighting over her sister's panties, she decides to act as their porn magazine. Since then, her brothers have started treating her body as a convenient sex tool... even taking her virginity!? They all start using her sister as a sex object. Even when their father finds out, the whole family starts having sex... Every night's sex object also brings back memories of that erotic tale.
