So what's with Miyoi and Geidontei anyway? Like, she's its zashikiwarashi, right? But how does that come into play with the establishment and its clientele?
We do know that at least one household actually interact with theirs. But then I also recall that Miyoi seems to be a transient presence? Nobody questioned too much when she went missing, and the owner there doesn't seem to be even aware that Miyoi's been serving his customers?