Comment by theaustinseven

Japan invaded the Korean peninsula as well as a sizeable portion of China and enacted horribly cruel war crimes against the citizens of those places. I won't get into details, but this comment would be akin to asking "What's the history between the Germans and Jews? Why don't they like each other?". The primary difference being that Germany had a reckoning with the history of what happened during that time, while the Japanese Government has mostly denied that any of its war crimes even happened which never allowed tensions to drop as much as they may have in Europe.