European as in west-European? That part is relatively culturally and ethnically diverse; northern and eastern Europe are a lot less so, and tolerance towards foreigners is lower there. The English and French still really dislike one another for example, and they're much closer together than Japan and Korea.
I'm neither Japanese nor Korean so I can't really speak for either culture, but Japan and Korea are not England and France, and they don't necessarily view themselves the way Westerners view them.
European as in west-European? That part is relatively culturally and ethnically diverse; northern and eastern Europe are a lot less so, and tolerance towards foreigners is lower there. The English and French still really dislike one another for example, and they're much closer together than Japan and Korea.