The dim nightlight casts eerie shadows as the sister creeps into her brother's room, her heart pounding in her chest. She climbs onto the bed, her eyes fixed on his sleeping form. She can't believe she's about to do this, but the taboo allure is too strong to resist. She pulls down his shorts, revealing his flaccid cock. She takes it in her hand, marveling at the soft skin, before leaning down and taking the tip into her mouth. She sucks gently, feeling him twitch and grow harder against her tongue. She moans softly, the vibrations sending shivers down his shaft, as she takes him deeper, her brother's quiet snores the only soundtrack to her forbidden late-night feast.