Therefore, Michinaga did not assume the position of Regent or Kanpaku until his own grandson became the Emperor so that he was the Emperor's grandfather on the Emperor's mother's side, and he tried to exert his highest power of authority by holding a joint appointment as Sadaijin (Ichinokami), effectively the chief figure in Dajokan, and as Nairan, which had the authority close to that of Kampaku.
そこで道長は自らの孫が天皇に即位して外祖父となるまでは摂政・関白には就かず、太政官の事実上の首席である左大臣（一上）と関白に近い権限を持つ内覧を兼任することによって最高権力を行使しようとしたのである。