Emperor Monmu
The Asuka-, Nara- and Heian-period Imperial court hierarchy encompassed a . The origin of the current Imperial Household Agency can be traced back to the provisions on the government structure which were put into effect during the reign of Emperor Monmu, with significant modifications in 1702, 1870, and 1889, "Daijō-kan" officials within this ministry structure were: The management of food stores and food pood preparation within the court was encompassed within the organization structure of the ritsuryō system, including an acknowledgment of the place held by its senior officials within the structured palace hierarchy.