Locked out on a rainy night, you come around to your step-sister’s window and catch her half dressed. Rather than knocking on the glass, you hang back in the bushes, quietly stroking yourself as she strips down and prepares for bed. Feeling your eyes on her naked body she rushes to the window and accuses you of spying, but to your surprise, she doesn’t attempt to cover up. She teases you further, chiding you for your disgusting behavior, but urging you to continue stroking nonetheless. She insists that you confess how badly you want her, and demands that you admit to being filthy a step-sister-lover and must cum for her if you want her to let you back inside.