Japanese soldiers were seen as extremely dangerous. Even while surrendering, they would come back to kill you on the battlefield. The fanaticism that led them to a people that punched above their weight class is what's going to doom a lot of japanese soldiers in this period. But i mean, first hand accounts are everywhere, and they will be a part of this story until an atomic bomb begins to end it.
Japan's rising sun goes supernova and engulfs a huge area of Asia and the Pacific. A war without mercy begins to develop infusing the whole conflict with a savage vibe.