As the door creaks shut behind them, the siblings find themselves in a world of their own, a realm where the rules of society hold no sway. The girl, her breath coming in short gasps, backs up against the cool wall, her brother's hands exploring her body with a hungry desperation. He traces the curve of her breasts, her hips, her thighs, his touch igniting a fire within her that she's never felt before. She can feel his hardness pressing against her, a promise of what's to come. As they sink into the throes of passion, their bodies moving in sync, they are both acutely aware of the taboo they're breaking, the sin they're committing. Yet, in that moment, they choose to give in, to let go, and to take solace in the fleeting pleasure they've found in each other's arms.