The air is thick with tension as the siblings share a secret, illicit moment. She's on her knees, he's standing, their eyes locked. He guides her head to his cock, and she takes it eagerly, her lips stretching to accommodate his size. She sucks hungrily, her hands exploring his body, while he grips her hair, guiding her rhythm. His breath hitches as he cums, filling her mouth with his hot, salty seed. She swallows every drop, a satisfied smile playing on her lips.