[He thought he was prepared, but actually feeling the humbler fit into place between his legs where he is most vulnerable, feeling the screws tighten the wedges into a significant stretch, is altogether a new experience. It almost winds him — that pull of forced rigidity stretches tender skin to a dull, throbbing ache that lasts. Sasuke has no way to hold himself up within the restraints, and so he lets his weight slump downward against the bed as if any posture or poise of fight has seeped out of him at once, limbs pliant, muscles struggling not to spasm. A sort of coaxed physical lassitude simply because he feels so vulnerable in this state.]

I'm all right, it's just... [the words are slow, a little breathless.] It's an intense sensation. This part of the body, obviously it's... somewhere I'd try to protect from harm, so it's almost like there's this — mental barrier, too.

[Akin to the first time Cy had spanked him, maybe. His reflexes want to resist, but in this case, there's no possible way to do so.]

And when you apply pressure like that...

[A sound breaks from his throat, jagged outcry turned at the last second against the sheets in a muffled death — perhaps the loudest he's heard himself vocalize without Cy fucking him into senselessness. There's pain, a whole river of it, rushing in on all sides as he's never felt, renewing some of the vigor in his body so he begins to struggle even if it makes the pain worse, because to stay still is even more intolerable. And it feels so good, like the edge of a wound deepened to something bleeding, something permanently scarring.]