Hidden in the shadows, a brother's gaze falls on his sister, her body a temptation he can't resist. His cock swells, straining against his clothes, yearning for her touch. Their argument echoes, but so does the rhythm of his hand on his shaft. She sees, her breath hitching as her pussy clenches. He wants her to watch, to see how much he craves her. The room fills with his grunts and her soft gasps, their bodies aching for a release that's becoming harder to resist.