In 789, he and FUJIWARA no Tsugutada pursued the status of defeated army for KI no Kosami, seii taishi (great general who subdues the barbarians) who was bitterly defeated by Aterui, the chief of Ezo at the Battle of Subushi.
同8年（789年）には、巣伏の戦いで蝦夷の酋長阿弖流為に惨敗した征東大使紀古佐美に対して、藤原継縄とともに敗軍状況に対する追求を行った。