Step Sister got Stuck again and Asked Step Brother for help

Imagine your best friend invites you to their house and their sibling is there. You've heard rumors about them, and they're in that moment, oh so inviting. You're not here to judge, you're here to enjoy. She's got a body that could make you drool, her curves are endless, and her ass? You could bounce a quarter off that! She's got on some tight yoga pants that leave little to the imagination, and you can't help but wonder what's underneath. She's got a step-sister fantasy on her mind, and she's not shy about it. So, you find yourself in a situation you never thought you'd be in, but you're not complaining. She's got her big booty in the air, and you're about to give it a workout it'll never forget. But wait, there's more. She's not just asking for help, she's asking for your help. You're her step-brother, and she's turned to you for assistance. The question is, will you give her what she needs? And if so, will you make sure she gets her step-sister fantasy fulfilled?