All but for the smallest tug at the edge of his lips, upward, here and then completely gone, it might have looked as though no reaction had happened at all to those.

Just button and button. Pulling his shirt from his pants so he could finish the rest, leaving it open with only the thick silver ring at his breast bone, and only then raising his arms over his chest to turn to the buttons at his wrist.

Then he pushed up on one arm to shrug out of one arm rather gracefully even for it being in an odd position. And then the other side. Taking the shirt and folding it once before laying it over the back of the couch.

There may have been the flicker of a smirk when he glanced over when he finally turned himself so his feet were on the floor and not the cushion.