Later in 1149, he was assigned to serve as Udaijin (minister of the right) with the support of the retired Emperor Sutoku and FUJIWARA no Yorinaga, which was the first time for a member of the Kanin-ryu Fujiwara clan was promoted as a minister.
降って久安5年(1149年)には、再び崇徳上皇や藤原頼長らの支援を得て、閑院流藤原氏から初の大臣として右大臣に登用された。