I WAS A BOTTOM-TIER BUREAUCRAT FOR 1,500 YEARS, AND THE DEMON KING MADE ME A MINISTER

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? Note: Includes 2 extra chapters. — Description from AniList community (anilist.co).