Maso!Emily
The pain was immense, with the clamps crushing her nipples while Rider tugged on them playfully, each pull drawing a fresh scream from the Changeling. Even amidst the pain, Emily moaned as Rider's fingers continued to pump in and out of her folds. Dimly, the Changeling registered the feeling of the woman's tongue trailing its way down from her stomach, somehow managing to get a giggle from the Changeling at the tickling sensation.
As Rider traced lower, however, the occasionally giggle soon faded away as the woman's tongue replaced her fingers, those digits instead shifting up to play with that ever-so-wonderful nub at the apex of her folds, drawing scream after pleasured scream from her as the pleasure drove her ever higher. Then a sudden jolt of pain brought her right back down, Rider's tug on Emily's already stretched breasts trapping the Changeling in a maelstrom of pleasure and pain, both sensations blending together to drive her higher and higher until-
-until Rider suddenly stopped, her mouth leaving the Changeling's soaked folds. Emily groaned plaintively as her arousal ever so slowly wound down, Rider taunting her as she gave the woman a pleading look.
Then, when her arousal had gone down a fair bit, Rider went back to pleasuring her, driving her back closer to that peak, only to stop short once again, the Changeling groaning with frustration as she was left completely at Rider's mercy.