When the Shibi Chudai (the office handled the principal Empress Komyo's affairs) was established in 749, he started to support Nakamaro as a daihitsu (undersecretary), and shortly after that, he was ennobled as a Sangi (councilor) although he was already 61 years old.
かくして、749年に紫微中台が設置されると、その次官（大弼）として仲麻呂の補佐にあたり、その直後にはすでに61歳になってはいたが、参議として公卿に列せられる。