Cute. Startlingly good, too.
Well-animated, and worth watching.
The song was good, and the Korean singing wasn't as distracting as I thought it would be at first. Fits in with the movie very well.
The plot's not an original one- it's been done before. It's pulled off so nicely, though, that doesn't really matter.
It has a few little moments that make the movie a lot better if you catch them- especially at the very end.
Best movie I'd seen in a long time.