After achieving his ambitions as ruler, a legendary demon lord seeks new challenges. Reborn in modern times as an ordinary human, his great power appears godlike compared to the weak people around him.

Having reached the pinnacle of human potential, Varvatos was so powerful that the rest of humankind began calling him the Demon Lord, both fearing and respecting his overwhelming influence. As a result, he felt alienated from his fellow humans, leading him to desire true companionship-an equal he could call a friend. Hoping his fate will change in his next life, Varvatos decides to start anew and reincarnates three thousand years later as Ard Meteor, the son of a seemingly ordinary couple in a rural town. Unfortunately, he realizes that even after weakening himself, his strength still overshadows everyone in this era. Moreover, his lack of social skills bars him from achieving his goal of making friends. But worst of all, the repercussions of suddenly abandoning his former position have begun to bite him back in some of the most unimaginable ways possible.—MAL Rewrite

After accomplishing everything he could as king, the most powerful Demon Lord ever, Varvatos, is now bored. To spice things up a bit, he is reborn in the future as Ard Meteor. Not without first recalibrating his powers to be perfectly average. But there's no way he could have predicted that everyone in the modern world would be weak as hell, making him totally overpowering once again.—Crunchyroll