The house is quiet, the perfect setting for first-time exploration. A young sister, intrigued by her brother's nocturnal activities, sneaks into his room. She watches, mesmerized, as he strokes his cock to completion. Her heart races, her panties dampening. She can't resist touching herself, her fingers dipping into her wetness. Their eyes meet, and the dam breaks. They tumble onto the bed, a tangle of limbs and urgent kisses. He enters her, his thickness stretching her virgin hole. They move together, their bodies finding a rhythm, her nails digging into his back as she urges him on, deeper, harder, until they both shatter, their cries of release echoing in the night.