Something I was wondering earlier is how they're trading with other nations when they don't even have their own currency. Matters of currency have never even been brought up. It is as though they're just bartering with goods in every possible circumstance, including in other countries.
And now another weirdness has come up... "Call the guards". What guards? As far as we've seen, there is no system of law enforcement in the Jura Forest region besides wherever the Oni squad happen to be. As far as I can tell, the Onis are the only "guards" in the entire region.