This little arc is one of my favourite arcs in manga, the pacing is incredible, we go from the very fun premise of abusing aesop's honest woodcutter fable, but still having the dramatic irony of having to use everything up, then figuring out the minutia of what using something means, and finding out that spending money is actually hard when you're rich, and while the villain may not be super interesting with him essentially just being a lot of people with guns, him paired up with the trees and the resolution killing two birds with one stone ties it up so perfectly, not even mentioning the actual ending next chapter