The brother, eager to please, takes his sister's commands to heart. Kneeling behind her, he spreads her ass cheeks, revealing her tight, puckered hole. He dribbles lube onto her, watching it trickle down to her eager pussy. With a groan, he pushes his fingers into her ass, stretching her, as she bucks against him. She demands more, so he replaces his fingers with his cock, slowly inching in. She gasps, but pushes back, taking him all. He fucks her ass hard, just as she ordered, their bodies slapping together, until they both cry out in release.