Kingdom of Manchuria (Two Chinas)

The Kingdom of Manchuria was established after the Pacific War as the Provisional Japanese-Korean Protectorate of Manchukuo in 1989. In 2004, after the fall of the Peoples' Republic of China to the south, Japan and Korea established a diarchic kingdom.

History
Manchuria was initially part of Peoples' Republic of China before the Pacific War. During the Pacific War,  Japan and the newly formed Republic of Korea invades Manchuria and seizes it from the PRC, establishing the Manchurian Protectorate. After the collapse of the Peoples' Republic in 2004, Manchuria declares itself an independent nation. Renaming itself the Kingdom of Manchuria