A brief description of the The Greatest Demon Lord Is Reborn as a Typical Nobody manga:
As the most powerful creature in the world, Demon Lord Varvatos thinks his life is very boring. So he decides to be reborn and adjusts his magical powers to be perfectly ordinary. But he couldn’t foresee that everyone in today’s world has become bloody weak. Having been reborn under the name of Ard, he has women eager for him, a royal family begging him to become the next king, and a former subordinate eager for his death?! But Ard is determined and will stop at nothing to achieve his goal!