She pretends not to notice as he peeks in—step-sister sprawled on the bed in nothing but a pink bra, sagging natural tits bouncing every time she shifts. Legs spread just enough to show what’s underneath before she pins him down. Moans get louder when he grabs her hips too tight; fingers dig into his shoulders like she’s been waiting for this all night. Pussy glistens from earlier teasing as she rides him slow at first—then suddenly slams down harder, chin tilted up toward the ceiling like a dare. Cumshot hits deep inside her while she whimpers ‘don’t stop,’ voice cracking.