Keira in a submissive flow

Keira kneels, wrists bound behind her, the rope cutting into her skin. Her master moves behind her, his presence heavy, watching. The whip cracks across her back, fast and sharp, leaving a hot line of sting. He doesn't speak. She doesn't beg. Only the whip answers her breathing, harder each time it lands, until her shoulders shake and her thighs glisten. When the vibe hits, he pins it to her clit without mercy, forcing it there, turning the pain into something worse. She fights it at first, hips jerking away, but the rope holds and the vibe doesn't stop. Her body arches anyway, pulling against the knot. He keeps it pressed, steady, as she starts to shake, mouth open, drool sliding down her chin. He watches every second, letting her cum hard, letting it break her open, until she sags forward and the vibrator keeps buzzing on her swollen cunt.