from what i can gather people generally dont like foreigners in japan but they seem to tolerate you if you're white, but brown people get shunned and arent allowed into many places where foreigners arent allowed, if you're mixed race with jap blood you get called hafu wich means half blood and its more or less the same situation, they dont seem like the type to go around lynching niggers but thats very likely cause they dont feel like they're being replaced/threatened