Thereafter, Yasutsune became a close aide to Emperor Goshirakawa, successively holding the various posts including Kawachi no kuni no kami (Governor of Kawachi Province) Dewa no kuni no kami (Governor of Dewa Province), Settsu no kuni no kami (Governor of Settsu Province), Shonagon (lesser councilor of state) and Ukyo no daibu (Master of the Western Capital Offices).
以後、後白河の側近となり、河内国守・出羽国守・摂津国守・少納言・右京大夫を歴任。