Stepbro & sis: Voyeur's delight.

The creaking floorboards betray the stepbrother's approach, but the sister is lost in the pleasure of her own touch. He watches, unseen, as she teases her clit, her fingers glistening with her juices. His cock hardens in response, and he strokes it slowly, careful not to make a sound. When she finally notices him, they share a charged moment before she beckons him closer, her voice barely above a whisper. 'Show me,' she says, and he does, his cock throbbing as she watches, her own hand never still.

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