If this had been a couple of years ago, Setsuna would have snapped back, but instead, he just looked slightly hurt for a moment and let Katou go so he could wash up.

He didn't have anything to say...not then. Instead, he just curled his knees up to his chest and started to think this over, trying to think of just how he could word himself when Katou came back in, and.... Maybe he was going about it the wrong way, though? Maybe if Katou didn't want to talk he should just leave him be?