[Kashuu sure has a lot of reasons to hate repairs, which means he has a lot of reasons to act like he doesn't - or at least to pretend that his reasons are all shallow, surface-level irritants. "I worked hard on this manicure and I don't want you to see it chipped", or a simple "it's not cute", "it's not fun", whatever the flavor of the day is as it suits him. It's better for people to think he's a fussy sword than for them to realize how many times in an hour he jolts out of unpleasant memories, unguarded and restless when he's alone in the repair room.
But today he isn't, so today he's on guard, working hard to prevent himself from drifting and trying his damndest to keep those little flickers of memory that dance at his vision's edge exactly that - flickers, nothing more. That's why he's pretty attuned to Mutsu, even if he pretends he's not paying much mind. It's better to have something tangible to focus on.
A few beats pass after he snaps awake, in any case. Then:]
If you're that tired, you should reeeally pick a better place to nap.
b!!
But today he isn't, so today he's on guard, working hard to prevent himself from drifting and trying his damndest to keep those little flickers of memory that dance at his vision's edge exactly that - flickers, nothing more. That's why he's pretty attuned to Mutsu, even if he pretends he's not paying much mind. It's better to have something tangible to focus on.
A few beats pass after he snaps awake, in any case. Then:]
If you're that tired, you should reeeally pick a better place to nap.