Your stepsister is going to a party, and you don't want her to go. You have been perving on her since she moved in, and she can't get any space! You know she didn't ask permission to go, so you take advantage of the opportunity to make her do what you want by blocking her and threatening to tell if she doesn't do exactly what you say. She is disgusted in you, but she obliges, showing off her ass when you want, stroking your cock, and even SUCKING you! Finally, you take it one last step further, saying you want to fuck her. At first she says no, but she gives in, letting you fuck her from the back raw. She tries to ignore how good it feels, moaning and groaning on her stepbro's cock over and over again. When you get close, she says don't cum in her, but of course you don't listen, you just shove it in deeper, filling your stepsis's cunt up with cum for her Halloween party!  Keywords: stepbro stepsis, stepfamily, taboo, creampie, accidental creampie, doggystyle, blackmail fantasy, mean girl, blowjob, pov, virtual sex, real dildo