Koretada not only tacitly permitted Kaneie marrying his daughter FUJIWARA no Choshi off to the Emperor, but also he promoted Kaneie to Dainagon (Major Counselor) at the Shosanmi rank (Senior Third Rank) in 972 and in addition appointed him to U-konoe no taisho (general of the Left Office of the Imperial Guards) and also Azechi (officer who patrols local areas to inspect local communities).
伊尹は兼家が娘の藤原超子を入内させるのを黙認しただけでなく、天禄3年（972年）には正三位大納言に昇進させ、更に右近衛大将・按察使を兼ねさせた。