Solace
Kai kept a place to sleep, because he couldn't do that very well at the dojo.
It was hidden by the docks, and had a working lock. And didn't have Bladebreakers, mostly.
It had a hard couch two inches too short, a table you'd hit your shins on if you weren't careful, a display case for trophies Kai didn't care about and old models of Dranzer he didn't use. A tiny bathroom with a mirror on the wall that Kai didn't necessarily have to look at, and when he did, was too small to get much information from. Too small to form an opinion from. Sometimes it let him save face.
He liked bare walls, so that's what most of the walls were. On one, granted, he had a picture of the former Bladebreakers (that's where they came in), but he didn't necessarily have to look at that either. In fact, he had to make an effort to crane his neck that way, sitting on the couch with a notebook full of blade schematics. He had to really want to see them, in order to see them.
That was how Kai liked things.
And sometimes it let him save face.