When the FUJIWARA no Nakamaro War occurred in 764, he became the Governor of Echizen Province at the same time his father, Toyonari, returned as Udaijin after being shunted off as Dazai ingai no sochi (ex-officio governor general of Dazai-fu, Kyushu Government Office).
天平宝字8年（764年）藤原仲麻呂の乱が起こると、大宰員外帥に左遷されていた父豊成が右大臣に復位すると同時に越前守に任じられた。