I wonder what percentage of these immigrants are ethnically east/southeast Asian, or even ethnically Japanese. I imagine a large portion of the Peruvian and Brazilian immigrants shown in the chart have Japanese ancestry (I believe Japanese ancestry makes immigration from those countries easier -- to the extent that one point there was a black market in being adopted as an adult by Japanese people -- and there is a large, old Japanese emigrant community in both countries).
It's a somewhat crass question. But ethnicity, not just nationality, seems to matter a lot in Japan.
It's a somewhat crass question. But ethnicity, not just nationality, seems to matter a lot in Japan.