The air between them thick with tension, the brother's eyes locked onto his sister's heaving chest, her nipples straining against the thin fabric of her top. He leans in, his breath hot on her neck, his hands gripping her hips. She moans softly, her body arching into his touch. His tongue, hot and wet, trails down her neck, pausing at the hollow of her throat before continuing its descent. He pushes her skirt up, his fingers brushing against her damp panties. She whimpers, her legs trembling as he pulls her panties aside, his tongue finding her wet, swollen center. He licks and sucks, his fingers joining the dance, driving her wild with desire.