I'm not really sure what the intention is in making Mie this stupid. I don't expect her to be an intellectual at that age, but man, her behavior is that of a toddler just because she can't see properly. And she's oblivious to everything. Right now, the only thing going for the show is the little cute and wholesome moments. And at the very least, it comes from fairly innocent comments which is the "pure" that stands out from these kids.