Bored and curious, the sister sprawls on the couch, legs slightly parted, flipping through intimate photos. Her brother, noticing her distraction, seizes the opportunity. Kneeling between her legs, he gently pushes them wider, revealing her damp, pink pussy. He leans in, his tongue flicking out to taste her, lapping at her wet folds. She gasps, arching into his touch, as he explores her depths, his fingers joining his tongue to tease her clit. Her moans grow louder, her hips grinding against his face until she shudders in release.