Right up her ass

Solidly gripping Guenevere's tight hips, I push harder, trying to invade her asshole with my big cousinly cock. She moans, tilting her head back a bit, and then sucks air through her teeth in slight pain. She attempts to escape my invading cockhead by rolling forward a bit, but a firm grasp on her hips seals her anal fate.

My dickhead pops inside of her tight, pink ring. Guenevere lets out a far-too-loud shriek, overwhelmed with pleasure and pain. I do not stop there, and keep pushing further and further into her impossibly tight asshole. I push and push into her butt as she squirms and adjusts to my invading cock. I remove a hand from her hip, and place it back on her tit, mauling and assaulting her chest with as much roughness as my invading cock.

Eventually, I'm buried all the way inside of her perfect ass, my large balls rest against the cold metal of her chastity belt that covers her more suitable hole. I give her only a moment to adjust before beginning my **** retreat from her butt tunnel.

"You're so fucking big! Argh!" Guenevere cries out, making a half-attempt to keep the noise down and conceal our secret incestuous anal fucking. My thoughts that she might not be enjoying the act of her big cousin having sex with her ass are quickly dismissed when she starts backing into me a bit, and begins playing with her own tits that my mauling hand is not currently working on.

"Fuck me. Fuck my ass, big cousin!" she says to me between clinched teeth as my pounding and her backwards motions collide harder and faster with each stroke into her tight little butt.

After much less time than usual, I'm ready to cum. She seems to sense this, and takes me all the way in her ass, and starts moving back and forth only just an inch on my member, but at a very fast pace. I toss my head back in absolute pleasure, and begin shooting my hot load into my cousin's little asshole. I fuck the cum into her, pushing deeper and deeper, twitching and moaning as I find my sexual climax. She cums, too, squirming and pushing her face into the pillow to mask her sexual scream.

Finally, I finish cumming in my little cousin's ass. Still buried inside her, we both work on calming down from the anal sex we'd just shared, breathing hard and sweating.