In the dim light of the closet, the brother's hands roam over his sister's curves, her breath quickening as he reaches her breasts, cupping them, his thumbs brushing against her nipples until they're hard peaks. She moans softly, her head tilting back, exposing her neck. He leans in, his lips and tongue tracing a path down to her collarbone, his hands pushing her skirt up, finding her wet, ready core. She gasps, her hands clutching at his shoulders as he fingers her, his thumb circling her clit, driving her wild. Their bodies press together, their movements frantic, their breathing ragged as they give in to their illicit passion.