At the end of the sixth century, Empress Suiko, Prince Shotoku, and SOGA no Umako, after emerging victorious from several conflicts, established firm political foundations and actively reformed the polity by basing it on bureaucratic systems such as Kan'i junikai (twelve cap rank system) and the Seventeen-Article Constitution.
こうした中で6世紀末、幾つかの紛争に勝利した推古天皇、聖徳太子、蘇我馬子らは強固な政治基盤を築きあげ、冠位十二階や十七条憲法の制定など官僚制を柱とする王権の革新を積極的に進めた。