That's a overly simplistic. The relationship between Japan and Korea is very complicated. They have a long history together, and a lot of culture in common.

There are certain issues over which there is conflict, and certain classes of people within each country that beat the nationalist drums harder than average, but there's also a lot of mutual admiration, especially among the young. The antagonism won't die down anytime soon, but I'd say the trend is definitely downwards.