(history, government) a 律令 (ritsuryō) office under the 宮内省 (Kunaishō, “Ministry of the Imperial Household”), responsible for managing animal and plant oil production

greatly interesting

to study / to learn

extraordinary, unusual

emergency

very; extremely / exceedingly; tremendously

油, 膏: oil / 脂: fat / 脂: skin oil

history / the study of history

mainly, primarily

lord, master / main, principal