So, I'm 40 chapters in, and my opinion is as follows:
There are lots of flaws to find with this manga. In particular, logical consistency is not its strong suit; there are quite a few examples where something that was established in a later chapter (eg the drinks only working with Oriko) contradicts something that happened previously (such as a tree growing giant).
Despite that… I can't really bring myself to actually bad-mouth this manga.
It's un-pretentious, it has a simple premise and it tries to have as much fun as it can with it. The mutually loving relationship between Oriko and the townsfolk is really refreshing to see.
7/10.