Along with FUJIWARA no Yoshiyuki, the third ranking officer of the Tsuibushi Hankan (the Office of Police and Judicial Chief) and OKURA no Haruzane, the fourth ranking officer of the Sankan (secretary), he fought FUJIWARA no Sumitomo's army, who attacked the Dazaifu, at Hakatatsu.
追捕使判官（第3等官）藤原慶幸、主典（第4等官）大蔵春実等と共に、大宰府を襲撃した藤原純友軍を博多津にて撃退する。