These existing sections were written when TAIRA no Tomonobu was assigned as a lesser councilor of state after served as Hyobu shoyu (junior assistant minister of the Hyobusho Ministry of War) and Hyobu no Gon no Taifu (provisional senior assistant minister of Hyobusho Ministry of Military).
これらの現存部分は、筆者の平知信が兵部少輔から兵部権大輔を経て少納言に任命された時期。