While my Shy Stepsister is doing her Homework, I take the Opportunity to Fuck her Hard.

While my shy stepsister, [Name], is holed up in her room doing her homework, I see this as the perfect opportunity to sneak in and give her the education she's been craving. Her big, perky tits and juicy ass have been driving me wild for months, and tonight I just can't resist any longer. As she leans over her desk, I slip in behind her, my cock already hard and ready. She's so focused on her books that she doesn't even notice me at first, but when I start to rub her back and whisper dirty nothings in her ear, she can't help but blush and tremble. I whisper in her ear, "I know you're too shy to ask, but I bet you'd love to have my big cock buried deep inside you." She giggles nervously, but her eyes are wide with anticipation. I slip my hand up her skirt, feeling her smooth, warm skin. She's not wearing any underwear, and I can feel her pussy getting wet just from my touch. I whisper, "You want this, don't you?" She nods, her breath coming in short gasps. I unzip my pants, letting my cock spring free. She gasps softly, her eyes widening at the sight of it. I position myself behind her, and she reaches back to grab my ass, pulling me closer. I lean down and whisper, "You're going to take it all, aren't you?" She nods again, and I slide my cock into her tight, wet pussy. She lets out a soft moan, and I start to thrust, nice and slow at first, letting her get used to me. But as she starts to move her hips, meeting my thrusts, I can tell she's really enjoying it. I reach around and start to rub her clit with my fingers, making her gasp and moan even louder. She's getting closer and closer, and I know it won't be long before she explodes. I lean down and whisper in her ear, "Come for me, baby. Show me that big ass is capable of squirts." She lets out a loud scream as her pussy clenches around my cock, her juices dripping out of her. And as she comes, I can feel my own orgasm building. I thrust into her one last time, and then I explode, filling her up with my hot cum. We collapse onto her bed, both of us panting and sweaty. She looks up at me, a smile playing on her lips. "That was amazing," she says softly. "I want to do it again." And with that, I know that we're going to have a lot more fun learning together."