I didn't read the whole thing and don't think it's necessarily inaccurate, but I'm wondering if it's developmentally appropriate if they are not necessarily socially mature enough at that age to fully grasp the concepts. For instance if he now thinks the Japansese were "tricky" is he going to understand that that was in that context, or is he now going to wonder if Japanese people in general are not to be trusted. I suppose if an adult read the book with the child and explained everything, there's nothing to worry about, but I'm wondering if it's Ok for him to read these types of books on his own.
