Shijou Saikyou no Daimaou, Murabito A ni Tensei suru

What would happen if the mightiest being of all time reincarnates himself as Villager A? As the Demon Lord, Varvatos leads a life where nobody dares intrude in his personal space. Desperate to find friends, he takes matters into his own hands and reincarnates 3000 years later as Ard Meteor, your regular nobody born in the boonies. But little did he know, magic has vastly degenerated after his passing, and what was considered average magic power during his lifetime is now considered never-before-seen talent! In a new life as a new abnormal, will he finally find true friendship?

(Source: Comikey)