Shijou Saikyou no Daimaou, Murabito A ni Tensei Suru

The most powerful of the Demon Lords, Varvatos, felt he had accomplished everything he could as a king. Thus, he yearned for a simple and tranquil life. A few millennia later, he is reborn as a villager, Ard Meteor. In this future world, the use of magic has declined. Nevertheless, Ard remains an extremely powerful individual who attracts attention. Meanwhile, the demons who spread terror in the world of old are ready to emerge from the shadows. Will the young Lord truly be able to lead the peaceful life he dreamed of?