@kursedkaiju
Yes. It's ridiculous, they're all like this. Chinese view Koreans and Japanese as lessers and tend to ignore their existence. Japanese just tend to mostly focus on themselves and their own culture/western culture recently, and Koreans seem to spearhead their culture on hating the Chinese and Japanese, especially the Japanese.
Regardless of what happened in the past, hating everyone of a nationality for something a few did in wartime is ridiculous. If that's the case, I, an American, personally declare war on the British, the entire Middle-East, the Axis Powers, Russia's Cold War-lovin' ass, Cuba - lookin' at you, China for its economic war on the world, Vietnam: you know what you did, Korea for the Korean War despite whose side we were on.
Everyone of these nationalities and ethnicities better get ready to be hated for several generations. Grr.