[The question jars him a little from where he'd already started slipping into his thoughts as they walked. And his impulse is to assure Keith he's fine and he's used to doing that; when they're in intense situations that require fast thinking, it's not really the time to dive into his thoughts, so it's the instinct. But here, it's so quiet and there's little to do but be stuck in thoughts that the pause is. super obvious when he doesn't answer right away.]
[But he breaks the quiet with a small, self-deprecating laugh.]
Yeah, I-- yeah. Just... thinking. Probably didn't sleep well last night? [always his go-to lmao he never sleeps well anymore.] I'm fine, Keith.
[He just has his usual headache. What else is new? At least they're never as bad here as they are back home.]