Ame rides his cock, bouncing up and dropping to engulf him once more with smooth, sensuous motions. Motions which only hitch a little, her limbs trembling in an almost purely cosmetic way as she cums on his cock, her pussy fluttering around him as it strokes him, her juices squelching and squishing out of her as his flesh glides within hers.
(A corner of her mind grabs on to the pleasure, and her Axiom obeys.)
Ame's hips shake as she continues to cum, moaning, trembling, but not stopping, her body obeying her so effortlessly that she can just keep riding, keep cumming, reveling in it. With that much stimulation, Sam's next orgasm is inevitable and unstoppable, and all she needs is a featherlight touch of her Axiom to make his orgasm go on and on and-
Ame cuts off her Skill before his orgasm reaches truly unrealistic heights, because she doesn't want to ruin him. But she does stomp on his refractory period again, his cock staying hard inside her even as both their orgasms end.
Ame gives way to Chris, let's her straddle Sam and take his cock into her, then she presses up against Chris's back and together they lean down to take turns making out with Sam while Chris rides him. Ame threads a tendril of her Axiom through it all, but it's powerful enough now that using it to full effect would be an entirely different category of experience, and Ame's goal is just to make this experience as flawless as possible; though Chris and Sam will both notice that their stamina, in both senses of the word, seems infinite. Both of them are barely sweating, in fact, though there's more than enough other fluids to make up the difference.
Ame takes another turn on Sam's cock, facing him this time, riding him chest to chest, and then she arranges Chris to lay down on her front, and Sam on top of her, fucking Chris from behind while Ame molds herself to Sam's back and humps him into Chris' pussy. Then it's Ame on her back with Sam on top of her, thrusting away with Chris humping him from behind to encourage him.
Their time in the room comes to an end with Chris riding Sam with Ame laying next to them, using her Axiom to sync up and then prolong a simultaneous orgasm between the two of them, pulling back everything else, and letting Sam's refractory period take hold as he pumps his last dregs of cum up into Chris' core.