Michinaga appealed to Nyoin and Emperor Ichijo for support, through Kurodo no to FUJIWARA no Yukinari, and on April 8, 1000, succeeded in having Akiko installed as the Empress and making her chugu (Teishi became an Empress (one rank higher than chugu)), which was the unprecedented situation of having one emperor and two empresses.
道長は蔵人頭藤原行成をして女院・一条天皇に働きかけ、翌長保2年2月25日、彰子を立后させて中宮と称し（定子は皇后に横滑り）、遂に前代未聞の一帝二后が現出したのである。