In the cramped closet space, the siblings' bodies press together, their breathing ragged with desire. The girl, her eyes closed, guides her brother's hand to her breast, her nipple hardening at his touch. He grinds his erection against her, seeking friction. She unzips his pants, pulling out his cock, and begins to stroke him, her grip tight. He responds by pushing her against the wall, hiking up her skirt, and rubbing her clit through her panties. Their bodies move in sync, their moans muffled by the clothes hanging around them. When they finally come, it's together, their bodies shaking with the force of their release, their juices mingling.