Locked away in their stuffy attic hideaway, the siblings whisper their darkest fantasies to each other, their voices barely audible over the pounding rain on the roof. Michelle's hand trembles as she reaches out, tentatively tracing the outline of her brother's cock through his thin pajama pants. He gasps, his hips bucking involuntarily, as she tentatively explores his length, her touch setting his skin on fire. Their breaths come in ragged gasps as they surrender to the sinful pleasure they've both longed for, their bodies entwined in a dance as old as time.