Therefore, Yamato sovereignty (the ancient Japan sovereignty) which had its regional base in the Kinai region (the five capital provinces surrounding the ancient capitals of Nara and Kyoto) established a regional office as a strategic point for foreign affairs and military operation against the Korean peninsula.
そのため、畿内を地盤とするヤマト王権が外交や朝鮮半島への軍事行動の要衝として、出先機関を設置することになった。