Hira Yakunin Yatte 1500-Nen, Maou No Chikara De Daijin Ni Sa Re ChaimashitaHirayakunin ; She works as public employee for 1500 years ; ヒラ役人やって1500年、魔王の力で大臣にされちゃいました ; 做了1500年的公務員，屈服於魔王當上大臣了

Before Azusa met with the noble Beelzebub, how did this plain Zebub who lived  inconspicuously becomes the agriculture minister? Were you able to manage the Demon country ? Spin off from Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita