Urgalia Senki ~Tensei Koutei ha Kugutsu Seikatsu wo Mankitsu suru~ (Associated Names)

The fourth prince of the Urgalian Empire, Aarses, was actually the reincarnation of a Japanese salaryman. With the support of the nobleman who had supported him, Aarses ascended to the throne as Emperor, but the nobleman gained real power and controlled national affairs as Prime Minister, turning Aarses into a puppet. But this was just…