Probably the biggest clue that Katsuya works too damn hard is that if you get him in a quiet place and get his guard down, he almost always drifts off for a while.

Of course, this is only possible because he's so comfortable around Verity. At least he won't wake up screaming and throttling whoever's touching him in an hour.

His nightmares are typically more psychologically traumatizing than physically violent. Typically. None for now. Verity's mastery of cuddling has earned her a warm cuddle buddy that sort of naturally feels like Verity's curled up next to a fireplace.