A friend of mine wrote this and wanted me to share, I know very little about the possibility myself:
"The stalemate of the Battle of Shenyang, where most of the Japanese land forces were decimated and the Qing too bloodied to fight further in the endless trenches, was only ended when the Qing court was overthrown and a new Han Dynasty, the Tian, capitulated to the Entente powers. However, the large death count led many Japanese soldiers to question the policies of imperial government. In addition, the oppressive policies of the Empire, including crackdown on any dissent and forced acquisition of material which meant near-starvation, alienated many more people, heightening left-wing support in the Home Islands.
The end of the brutal war against Qing should have meant that the war measures should have been lessened, but when Siberian Intervention against the Bolsheviks continued to drain blood and riches, the people had had enough. Riots throughout the country lead to a complete shutdown of the country, and with the rise of the Commune of France, the volatile situation turned into a revolution, in which the disgruntled troops of the 1st "Jade" Division marched into the organs of government and killed the reactionaries and capitalists who were profiting from the blood of youth. This triggered a general uprising, as the syndicalists used the trade unions allied with military unites to wipe away the old system.
The revolutionary fervor exploded beyond the Japanese Home Islands. In Korea, the Japanese troops stationed in the southern parts cooperated with the ongoing Equalization Movement to spread the influence of the Syndicalists, setting up communes and marching north to decapitate the puppet protectorate government. Meanwhile, the Russian Far East was completely flooded with blood as all other political groups were executed to spread the revolution, and soon the trail of red crossed the Amur River.
The Crimson Tide resulted in an unholy alliance of the reactionaries. Having joined the Entente, the Tian sent new divisions of troops into the North East and Korea to stop the flood and also keep afloat the Korean Monarchy. At the same time, the remains of the Imperial Japanese Navy steamed from the flaming red islands towards Dairen, with the sole remaining imperial member, Prince Chichibu. Eventually the Syndicalists were stopped, at the price of completely remaking the political landscape. The Tian had effectively lost its Northeastern Region, but it gained the leadership of East Asia. The Empire of Korea was temporarily halved before gaining the former Principality of Shim as a gift from Tian to guard the borders with the Syndicalists. The Empire of Japan was reduced to a few islands and the Kwantung Leased Territory, but the Imperial Lineage was intact, allied by blood to the Koreans with the marriage of Prince Chichibu and Princess Deokhye of Korea in 1930.
Now, as the "Great East" developed into the Eastern Wing of the Syndicalist International with its western ally the Commune of France, and the Communist International of the Soviet Union infiltrated the capitalist countries, the Entente was being pushed towards the wall, along with its new bedfellow Germany. Would the remaining monarchies manage to turn back the tide, or would humanity move onto the next stage of evolution of a Red Dawn?"
It sounds kind of far-fetched myself. I think they wrote it for a story of their own though.