Sister gasps as he hits her sweet spot with each thrust. Her body arches off the wall, seeking more contact with him. She moans his name, unable to contain the pleasure coursing through her veins. The forbidden thrill of being with her brother only serves to heighten every sensation, driving her closer and closer to the edge.
Her fingers dig into his shoulders, leaving bruises that she knows will be hidden by their clothes when they emerge from the closet.