He celebrated his attainment of manhood (genpuku) by himself, and went down to Hiraizumi, Mutsu Province counting on the protection of Chinju-fu shogun (Commander-in-Chief of the Defense in the North) FUJIWARA no Hidehira, who was the head of the Oshu-Fujiwara clan.
自らの手で元服を行い、奥州藤原氏宗主、鎮守府将軍藤原秀衡を頼って陸奥国平泉に下った。