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.
However, Japan has more than its fair share of far-right fruitcakes who deny everything, and in both Korea and China politicians have found Japan to be a convenient whipping boy whenever they need a distraction from domestic problems.
To be fair, they only elected the conservative party, the LDP; the party elected the prime minister. Granted, they've elected the LDP almost continuously since 1955. Of course, they tried electing the other party in 2009, but their leadership kept resigning. Of course, given the LDP's stranglehold on politics, one has to wonder why they feel a need to pander to the nettouyo.
I stopped paying to attention to politics about 5 years ago and am very surprised to learn that the major opposition party (DPJ?) has essentially fractured into multiple, smaller parties, all using a variation of the same name.
At this point, I'm not even sure who to vote for anymore.
The problem is that Japan has a history of doing things like this:
> In October 2006, Prime Minister Shinzō Abe's apology was followed on the same day by a group of 80 Japanese lawmakers' visit to the Yasukuni Shrine which enshrines more than 1,000 convicted war criminals.[57] Two years after the apology, Shinzo Abe also denied that the Imperial Japanese military had forced comfort women into sexual slavery during World War II .
Germany's the exception, not the rule. Most countries's governments like nothing more than to behave as if their past transgressions never happened. And even then Germany has had no shortage of politicians who say "Germany has apologized enough".
The agreement is about "property and claims" between the two states. Of course, individuals can and have sued various Japanese entities, some successfully.
They do like each other. Koreans love Japanese food and many Japanese also like Korean food. They watch TV shows from each other. Many TV shows are often just translated versions from the other country.
It's actually the politicians who want the people to have enmity to each other and some people are vulnerable to the propaganda. The existence of the North Korea regime and their history of kidnapping Japanese people also don't help. Much of their economic strength also overlaps, so there's competition as well.
If you still don't understand, think about close European countries. They probably get along just fine, but Brexit happened..
Oh yeah, I understand. That's why I brought up the last part. Germany did a relatively good job after the war of apologizing for its warcrimes and rooting out the toxic culture that led to them. I was trying to describe the gravity of the crimes that happened during the war with that comparison, less so the modern day feelings.
