Yes, sir- [It comes out instinctively, a groan at the end of the word when he thrusts particularly deep into Peter.
But with permission, he removes his hands from Peter's side, pushing his palms up Peter's back before carefully trailing just his fingertips down it. He slows the pace so he can focus, not tip Peter over any weird direction and then draws his claws down Peter's sides, just to figure out where... exactly. But another couple thrusts, his hands are back up at Peter's shoulders before carefully, so carefully dragging the claws down, watching the red marks under them trail after his motions. It'll take a few tries, afraid sometimes of forgetting how strong he can be before he scratches just enough to break skin while he moves.]
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But with permission, he removes his hands from Peter's side, pushing his palms up Peter's back before carefully trailing just his fingertips down it. He slows the pace so he can focus, not tip Peter over any weird direction and then draws his claws down Peter's sides, just to figure out where... exactly. But another couple thrusts, his hands are back up at Peter's shoulders before carefully, so carefully dragging the claws down, watching the red marks under them trail after his motions. It'll take a few tries, afraid sometimes of forgetting how strong he can be before he scratches just enough to break skin while he moves.]