Emperor Kōnin
According to the , the replacement happened as follows: in the third month of Hōki 3 (772), Ikami was accused of cursing her husband and Emperor Kōnin stripped her of the rank of Empress. In the fifth month of this year his son Osabe was deprived his crown prince status. In Hōki 4 (773), both were alleged to have murdered Imperial Princess Naniwa, a sister of Kōnin by cursing. This allegation made those two stripped of the rank of royals. Those two were together enclosed in a house in Yamato Province and died two years later in the same day, on the 27th day of the fourth month of Hōki 6 (on the Julian Calendar, on May 29, 775).