Would you please become the Demon Lord? (COMPLETED)

What happens when a real demon lord appeared from the fake ones? Then let's add that this new demon lord which does not know a thing or two about how the world works and only hates humanity. Drake was once a subject of cruelty of humanity. He was locked up and forced to undergo traumatizing experiences but managed to break out from the chains that bounds him. With only the goal of destroying the human race, how will the new world fare in the face of this ignorantly black-hearted new demon lord?   Luna here! Please note that the image cover for this work is not mine and only browsed google randomly. If the owner of the picture does not want me to use it, please send me a mail and I will take it down. I don't own even a shred of rights to the cover picture I just want to bask under its glory until it last. I don't have a shred of artistic bone too so my best friend google image does that for me.