The sight of her brother's innocent face, framed by his tousled hair, ignites a fire within Sophia. She can't help but give in to her forbidden desires. With a soft, yet firm grip, she strokes his hardening cock, feeling it pulse in her hand. She watches, entranced, as his eyes flutter open, meeting hers with a mix of confusion and excitement. 'Sister...' he whispers, his voice barely audible, as she leans down, her warm breath teasing the tip of his cock before she takes him into her mouth, introducing him to the pleasures of the flesh.