The Chronicles described that when the new official court ranks based on the Taiho-ryo (Taiho Code) was put into effect on May 7, Udaijin TAJIHI no Shima was assigned to Sadaijin and Dainagon Shokosan Miushi was assigned to Udaijin.
その後、3月21日に大宝令にもとづく官位が施行されたときに、右大臣の多治比島が左大臣に、大納言正広参の御主人が右大臣に任命されたとする。