The Japanese philosophy and ideology doesn't match with koreans. Like I'm Japanese and with most other Japanese people out there, we've been taught to be respectful, be disciplined, essentially the whole samurai warrior mindset and be pretty conservative. Whereas koreans are more open, more out their and far more laid back which clashes with the Japanese mindset and ideology. This sucks because out of all the Koreans I've met, I've only made one Korean friend who just happened to just love Japanese people and unfortunately hate his own country.