Korea is a nation in Asia.
A few weeks later after the fall of the People's Republic of China, South Korea went on to invade North Korea, to put an end to the division once and for all. With the aid of former Gensokyo residents, Japan and the European Union, North Korea fell within two months and the Korean Peninsula was reunited.
A heavy cost of problems came about after reunification, mainly economic and social. It took until 2085 for former North Korea to fully recover and become on par with the rest of Korea.