Keihanshin (京阪神), also known as Kyoto-Osaka-Kobe, is the capital of Japan since 2080 (previously under Kobe). In 2150, the Kyoto-Osaka-Kobe Metropolitan Region merged into one city, and renamed Keihanshin. Then in 2180, the rest of Kyoto, Osaka, and Hyōgo Prefectures went on to merge into Keihanshin, increasing the area to 14,908.12 squared kilometres. The population would become slightly less than half of Tokyo, at 27,000,000. Keihanshin later became one of the two capitals of the Terran Federal Republic, with the other being Nanjing.