In Korea , the war is a historic foundation of Korean nationalism and , as in China , inspired and was used politically to instigate nationalistic resistance against Japanese imperialism during the 20th century . Korea gained several national heroes during the conflict , especially Admiral Yi Sun-sin . Modern anti-Japanese sentiment in Korea can be traced as far back as the Japanese invasions in 1592 , although the principal cause is rooted in more recent events , particularly the hardships suffered by Koreans during the Japanese occupation of Korea from 1910 through 1945
the hardships suffered by Koreans
Japanese war crimes
Japanese invasions of Korea (1592–1598)