In 1180 when Yoshitsune in Oshu went to the armed camp of MINAMOTO no Yoritomo who had raised an army, he accompanied Yoshitsune along with his brother Tsugunobu by order of FUJIWARA no Hidehira. 
治承4年（1180年）奥州にいた義経が挙兵した源頼朝の陣に赴く際、藤原秀衡の命により兄・継信と共に義経に随行。