This isn't exactly a bad piece of media, but not a great one either. It is just mediocre, a good person meeting a good person, no conflict sticks in the movie, which may be a plus point for viewers wanting to see wholesome stuff for once, but for those wanting drama, there isn't any. Some plotlines just exist.
The art itself is very good. It is animated beautifully.
Characters are mostly very flat and have a very basic background and backstories. As I mentioned before, there isn't much conflict, so character development is non-existent, which is not a flaw of the movie, as it doesn't require any, but I hoped for more.
Overall, it is mediocre at best and painfully plain at times