I just finished watching this. I have to admit, in terms of tone and emotions, this is definitely the heaviest animation that I have seen. In this sense, Oseam bears some similarities with Grave of the Fireflies. This is not to say, however, that the movie is sad through and through.

There is no point in revealing any of the plot - suffice to say, the journey is ultimately fulfilling. In terms of animation quality, it is second to none. It is especially impressive considering that it was hand-drawn. Last but not least, this is not your average Disney flick - teens may be able to appreciate the story, but younger kid most likely cannot handle it.