In the darkened room, stepbrother and stepsister face each other. Their hearts race with anticipation. "I've thought about this moment for so long," he says, his voice thick with desire. She unbuttons his pants and slips her hand inside, gripping his hard cock. She takes it out and lubes it up with her saliva. "I'm ready whenever you are," she purrs. He positions himself at her wet entrance and pushes inside; it's brutally rough but she loves it. He slams into her, making her gasp and moan. He pulls out and spits on his cock, lubricating it again. He pushes back in, even harder this time. They continue like this for what feels like hours - him fucking her with unbridled fury, her begging for more. Their bodies become one primal beast, fueled by their shared desire.