This is similar to sword and dagger, but if people like using fists.
The kuni is like dagger. Just a range weapon, but it doesn't spin.
The daggers, I dont think you need to holster them or equip them. You just have them on your hands. Idk though.
The upgrades on changing the size of the weapon, I say it could slightly change. The max height could be the regular crossbow dagger.
Not much to say. Sorry.