스이코 천황
According to tradition, Shōtoku was appointed regent ("Sesshō") in 593 by Empress Suiko (554–628), his aunt. Shōtoku, inspired by the Buddha's teachings, succeeded in establishing a centralized government during his reign. In 603, he established the Twelve Level Cap and Rank System at the court. He is credited with promulgating the seventeen-article constitution.