Stumbling into her stepbrother's room, the dominant sister finds him eagerly stroking his throbbing cock. "Caught you, didn't I?" she purrs, relishing his humiliation. She commands him to continue, his hand jerking faster as she watches, her own pussy throbbing with excitement. "Faster, slave," she demands, her voice a whip crack. "Show me how you wish you could fuck me." His moans fill the room as he struggles to obey, his cock leaking pre-cum. "Good boy," she whispers, her smile cruel as she leaves him breathless and spent.