We watched this just last night. It's mostly in Chinese with subtitles but don't let that put you off. I thought it was a rare honest story of east meets west. I also love that it's a true story. The great aunt in the film actually plays herself.
Warning! This is grim. Like 12 Years a Slave kind of grim. I think it's an excellent example of an animated film that isn't for kids, even though the two main characters are kids. I know a 1988 Japanese animated film about the 2nd World War is very far removed from your normal viewing but just trust me on this one.