In the steamy bathroom, a brother and sister find themselves alone and aroused. She strokes her clit, her moans echoing off the tiles, while he jerks his hard cock. Their eyes meet in the mirror, and the tension builds. He strokes faster, his balls tightening, and with a grunt, he explodes, painting her back and ass with hot cum. She gasps, surprised and turned on, as he keeps stroking, covering her in his load.