I don't imagine there'd by a seismic shift in psychology. We would be dealing with a Japan not glassed into oblivion and forced to concede as happened at the end of WW2. We'd be dealing with a Japan that was more bitterly defeated, but not forced to kneel and assume humility, nor has it faced levels of destruction absolute. And it'd have populist movements from either of the colonies, the Northern half of Korea would probably be looking at subversive ways to get the south to throw off Japanese tyranny and come back to them and the urban Indonesians at least may be attracted to anything that makes concepts of nationalism more attractive (I wouldn't know about any tribal groups like in Papau; though I remember Googer took an adventure out there in PoW and it was pretty much under developed).