Hira Yakunin Yatte 1500-nen, Maou no Chikara de Daijin ni Sarechaimashita

Long before she ever crossed paths with Azusa, Beelzebub lived the life of an utterly unremarkable demon. For fifteen hundred years, she served as a plain, inconspicuous public worker within the Demon Kingdom, keeping her head down and carrying out her duties without ever courting attention or ambition. In a realm brimming with powerful and colorful figures, she was content to remain a quiet cog in the bureaucratic machine. Her uneventful existence takes a dramatic turn when the Demon Lord elevates her to the post of Minister of Agriculture. Thrust from anonymity into the highest circles of government, Beelzebub must now shoulder responsibility for the entire demon realm. The question looms: can this humble career official, who spent centuries blending into the background, truly rise to the challenge of managing a nation? This spin-off to I've Been Killing Slimes for 300 Years and Maxed Out My Level chronicles the untold story of how the noble Beelzebub rose from obscurity to become one of the Demon Kingdom's most influential ministers—long before her fateful meeting with Azusa.