You get on your knees and position your hard cock against your stepsister's tight asshole, indicating to her it's time to take things further. She hesitates but succumbs to your demanding gaze, slowly lowering herself onto your shaft.
Groaning in pleasure, you reach around and grab her perfect round ass cheeks, squeezing them hard as she slowly impales herself on your cock, her eyes widening in disbelief at the pain and pleasure she feels.
As she adjusts to the sensation, you begin to thrust into her tight ass, filling her up completely with each deep stroke. She moans loudly, arching her back as her stepsister's asshole stretches to accommodate your relentless pounding.
Your hands grip her hair tightly, pulling her head back as you thrust harder and faster, hitting her pro state cervix with every forceful stroke. Her moans intensify, mixed with pleas of more, as sweat drips from her body and her breath becomes ragged. Finally, you feel a wave of euphoria wash over you, and with one last powerful thrust, you release your seed deep inside her sister's ass, filling her up with a hot, sticky mess of your seed and pleasure.
