Your family has been getting together with your stepcousin's family for years. Now that you're both 18, you've noticed that Mia has really grown up! She still likes to color and play silly games, but now that the two of you are of age, it's time for a new game. Your parents are right outside, but that doesn't stop her from initiating a different kind of fun. She's so damn cute, and you feel like such a perv messing around with her in her bedroom. But, she insists on playing with the hard cock she noticed in your pants. She's actually a lot more experienced than you are - and it's not like she's your real cousin anyway. You're only related through marriage, so surely it's ok to play the kind of games she wants to play, right?