The Demon Lord is The New Hero!?

Exhausted by the relentless defeat against so-called "Chosen Heroes" armed with sorrowful pasts, the reigning Archfiend concluded victory lay in radical nonviolence. Once a foretelling revealed the next Hero’s origin in Garia, it clicked to avoid death and world domination he only got one plan. His brilliant scheme? Pose as a youth called Ren, slip into town, and gift the Hero a dull, contented upbringing filled with plenty of meals. So the hero does not have any motivation to wield a blade. ROYAL ROAD: https://www.royalroad.com/profile/967196/fictions