In the dimly lit room, our sister begins her private dance, her hands exploring her body, her fingers dipping into her wetness. She bites her lip, her imagination running wild with thoughts of her brother's massive cock. She strokes herself faster, her breath coming in ragged gasps. She's so lost in her fantasy that she doesn't notice her brother entering the room until he's standing right beside her, his own hand working his erection. They lock eyes, their mutual desire palpable. He watches as she brings herself to orgasm, her body convulsing, her pussy gushing, her cries of pleasure filling the room.