Weakest Demon Lord? It's Easy for Me!

Reincarnated, and then resurrected in the wizarding world, becoming the hero who defeated the Demon King. It was a story that everyone yearned for. In other words boring.



But what if you were reborn as a Demon Lord? As the side that must be killed by the hero, and tells how you must survive while planning to rule the whole world?



Moreover, with the weakest ability, and the lowest region. What must be done in order to rule the world?