Multipolarity requires sovereign nations built according to the principles and visions of their own ideals (philosophical/religious). This implies a level of nationalism, of ethnicism, regardless under what political system it is expressed. Whether Japan is a Shinto Buddhist civilization unto itself, or whether Japan strives for Western Anschluss, based on the old unipolar model, the mass presence of Chinese obstruct both ways. And whoever blocks all your paths forward must be called an enemy.