Your being reincarnated

After you and the hero killed each other for approving the peace treaty all races including

Fairies, Elf,, Humans, Dwarf, Demi-Human(Beast), and demons

You've been reincarnated for 1500 years to the future and you can choose any starting adventure...

Like born in a royal palace, or in a country side, or anything you want

Either you will continue to be evil again or become good on your new life... depends on you..

Demon King