In the period of the sixth shogun Yoshinori ASHIKAGA, it established the position of 'the master of kyuba' of the shogun family and often managed the official ceremonies of bakufu such as Mato-hajime and Uma-hajime (first horse riding in beginning of year) as the key player of yusoku kojitsu of samurai families around that time.
6代将軍の足利義教の頃には将軍家の「弓馬師範」としての地位を確立し、以後的始め、馬始めなど幕府の公式儀礼をしばしば差配し、当時における武家の有職故実の中心的存在となった。