You are a rich and powerful prince who will one day inherit the entire kingdom, but for now you enjoy the easy lifestyle of a playboy with a large harem of beautiful women available to service your sexual needs. One night, a new harem girl presents herself, face covered, and mounts your cock. You don't remember who she is or where she came from, but you're not worried about that as she rides you reverse cowgirl with her juicy ass bouncing on your hard dick. After a few minutes, she turns around and faces you, revealing her breasts but not her face. Only after she cums does she finally remove the scarf to reveal the face of your very own SISTER! Gloating over her trick, your sister confesses that she has wanted to fuck you for a long time, but she knew that you would never agree to commit such a taboo act with her, so she snuck into your harem in disguise. Now, she says, you have no choice but to continue to give her that royal dick...or else she'll reveal to the entire kingdom that you committed the dirty "I" word with her! Once a royal tradition, the practice of sexual relations between family members is now illegal, and if you are exposed you will surely lose your claim to the crown! Your only option is to go along with your sister's demands. Refusing to get off your cock until you cum, she rides you hard while teasing you by using that filthy "I" word over and over again to remind you what's at stake if you fail to comply.