Nationalistic South Koreans are calling for boycott of Japanese goods.

https://www.scmp.com/week-asia/economics/article/3017263/south-koreans-call-boycott-japanese-cars-beer-and-cosmetics

South Koreans have retaliated against Japan's export curbs.

However, I believe the US will step in to rein in these 2 countries before any serious damage is being done to the political relationship between SK and JP.

http://sg-stock.blogspot.com/2019/07/korea-japan-trade-war-has-just-begun.html