"No, please!" Kelly whines, her eyes squeezed shut as she tries to block out the sensations. "This isn't right! We're siblings!" But even as she protests, her body betrays her, responding to your touch in ways she never knew possible.
Your movements inside of her grow more confident and sure, and Kelly can feel herself getting closer to another orgasm. She bites her lip hard, trying to hold it back, but it's no use.