"On entire other sides of the globe" is a pretty strong statement. Japan is a vassal state of the US and Taiwan's independence from China relies wholly on US support. Chinese citizens (at least the ones I questioned) have no love for Japanese. There are even talks of a Pacific NATO between Vietnam, Korea, Japan, and the Phillipines, with Taiwan being the clear Ukraine parallel. South Korea is probably politically like Germany (primarily self interested), Japan is probably politically like the UK (sees the bigger picture).