https://www.quora.com/What-historical-reasons-would-cause-a-Japanese-to-hate-Koreans/answer/Donil-Park?__nsrc__=4&__snid3__=4927529319 Donil Park I think Leah J. Zhang's answer to What historical reasons would cause a Japanese to hate Koreans? is pretty much on point. The thing is, despising Koreans has been the “normal” for the Japanese. It is subconsciously ingrained into their culture and society, including in the economic and political relations with Korea, for over a century, possibly close to two centuries or more, by now. This attitude began when Japan successfully started to develop its economy with the technological transfers and trades with the European nations beginning around the 16–17 centuries and eventually modernized itself. In the Japanese's eyes, Koreans were seen as the inferior stock, the diseased, backward, irrational, dirty and unworthy people. This was justified because Japan was supposed to be the civilized nation that had the responsibility a...