Korea will not be getting a speaking role in the anime. Japan and Korea have terrible relations and Korea sees their nation being a mockery of their nation and finds it offensive, even to the point of death threats being sent. Japan and Korea have many disputes and they do not see typically eye to eye on might say. Though Korea has been offended by other anime characters resembling Korean idols or historical figures, or someone who has played a big part in Korea's history. Now you may not chastise any of those nations. They have their own beliefs just like our nation does. So one cannot harass another for one's beliefs.