Fucking the School Bully into Submission

Your little step-sister is have a rough time in college. The coursework is fine, but there's this really mean girl who won't leave her alone! It's stressing her out, and her grades are suffering! You decide the confront this bully and be the hero that your little step-sister so desperately needs. You try to talk to the bully, but she isn't letting up. She's studying to become a doctor, and on top of classes, shadowing, and studying for the MCAT, bullying your little step-sister is the only was she can blow off some steam. Well... one of the only ways. How much do you care about your little step-sister? She says that she'll stop bullying her if you agree to be her step-sonal sex slave. She super pretty and popular, so as gross as it is, its not the worst bargain in the world. She strips for you unless your fully hard, then instructs you on exactly how to fuck her. She's kind of micromanaging to be honest. Jeez, what a bossy bitch. She orgasms and then tells you that she's had enough, even though you haven't cum yet. Being a sex slave is one thing, but you are NOT about to be blue balled by the brat. You start fucking her again, and even harder and rougher than before. At first she is shocked and angry that you're not listening to her, but its not long until her ivy-leauge-bound brain becomes a slutty mess. You bust a load inside her tight, bratty pussy and tell her to hit you up the next time she wants to cash in on her "sex slave." In this video, I use a fuck machine. All characters are implied and intended to be 18+.