There's a significant number of Japanese in Brazil, and a large portion of the Brazilian population is of Japanese descent. They're called the Nikkei Japanese, and they're predominantly ethnically Japanese.

I wonder if there's the stat somewhere but I'm sure a sizeable portion is at least half Brazilian so it makes them a "half"—as Japanese like to say—which they don't tend to regard very highly. It is indeed a marginalized group in Japan and probably why there is such a big community in that area.