I kind of figured there was a bit of a crush going between Muu-chan and crow-bro. It's pretty cute. Dunno how youkai age gap stuff works in this world, though. There are half-human children in the school chapters, so it does happen. Maybe when she grows up it'd be possible?
This manga, man.. it's so cute and heartwarming and thoughtful. I just wish the chapters were a touch longer.