[Cronislee]

It's one of Miazaki's best from before Disney began sponsoring Ghibli.
It's not a feel good movie, or a fantasy, but it shows the ordeals of a boy and his sister who run away from home during the height of Imperial Japans conquests during WWII. It follows how they live, before and during the war, and how they survive in a country that is increasingly running out of resources as Imperial Japan funnels more and more necessities from the Civilians to the Army.

I would recomend it, but it's very realistic. It's hard for some people to watch.