Beautifully executed. The narration is excellent, and the overall mood of the movie is incredibly well-executed. And the fact that it is an animation just adds to the simplicity and naivete of this wonderful story. This is now one of my favourite movies. The only unfortunate thing is that I had waited so long to see it.
Despite the fact that it got off to a slow start, it never failed to keep me on the edge of the seat. A real suspense. The overall mood and storyline balances perfectly in this very different horror suspense/movie.