Furthermore, he carried out the compilation of the final volume of the Rikkokushi (the Six National Histories), "Nihon Sandai Jitsuroku" (Veritable Records of Three Reigns of Japan) as well as the the "Engishiki" (Procedures of the Engi Era).
また、六国史の最後となった「日本三代実録」や延喜式の編纂を行った。