With a creak, the closet door closes, trapping the siblings in their secret world. Michelle, her heart pounding, feels her brother's breath on her neck, his hands trembling as they trace the curve of her hips. She gasps as he tentatively touches her through her clothing, his fingers finding the heat between her legs. She can't help but grind against him, her body betraying her as she feels his length harden against her. Their hands roam, their breaths coming in ragged gasps as they cross the line of no return, their bodies slick with sweat and desire, their cries of passion and shame filling the tiny space.