The reason why Toshikata was chosen as the Kurodo no to was because he had the sympathy of FUJIWARA no Michitaka, who had the title of Kanpaku, and Toshikata did not forget about it for a long time, and loyally served the Nakanokanpaku family even after Michitaka died and the Nakanokanpaku family fell, despite being the close associate and older brother-in-law of Michinaga.
俊賢が蔵人頭に選ばれた背景には関白藤原道隆の恩遇があり、彼は後々までそのことを忘れず、道隆の死と中関白家が没落した後でも、自身は道長の側近かつ義兄であるにもかかわらず、中関白家に対しても忠義を尽くした。