Your younger step-sister has been acting out lately and doing a bunch of things she shouldn't be doing. You call her into your room to let her know that you know what she's been up to, and if she doesn't do something really nice for you you're going to spill all her secrets to your stepparents. She's bratty at first and remarks that she doesn't care if you tell them because you don't have any proof and they won't believe you, but you tell her that you actually do have proof. She's shocked to find out that you have actually been following her for the past month and you know exactly what she's been doing at all the parties she goes to. She asks you what you want and you confess that you find her really sexy and you want her to do some sexual favors for you in exchange for your silence. She surprisingly agrees very quickly, stating that she has sex all the time anyways so it's not that big of a deal. But she doesn't waste a chance to let you know how pervy you are for being into your step-sister like this. You take your dick out and she gets right to work sucking your dick like a pro, and then she asks you if you're going to cum in her mouth but you tell her you have other plans. She admits that she's enjoying herself and she eagerly hops onto your lap and rides your dick until finally laying back and letting you fuck her until you fill her right up with a huge creampie.
