Japanese Salaryman comments

When President Moon Jae-in met Dear Leader Kim Jong-un in April 2018, it's safe to assume they've agreed that four surrounding countries (US, Japan, China and Russia) are so vicious that two Koreans are played off to fight each other and they are victims of the four alike. Moon may have vowed to Kim to create the united Korea, totally independent from the four powers thanks to Kim's nuclear missiles. In exchange, Kim would've agreed that Moon's becoming 1st president of the united Korea and Moon will have 100% support from Kim leading all Korean military. Sanction from Japan or US doesn't matter to the integrated leadership because they (Kim and Moon) will forfeit the wealth of the traitors ( the established rich in SK, which is after all pro-Japan, and pro-US). Political system is converging into that of the North's that are quite traditional Koreans (Absolute tyranny governs slaves). 

Japan seems to have started preparing counter measures for such horror scenario, cooperating with not only with US, but with China (!) . China hates such possibility too as the integrated Korea will have more say to China using pro-America card. 

For both US and China, if the Koreas were to be re-unified while remaining its becoming enemy's land potentially, it must become "scorched-earth" before its happening. Japan's total withdrawal from SK is welcomed from both US and China tacitly.