After bring reincarnated as a prince in a magical realm, Damon suffered years of hardship. He was eventually exiled, fleeing to the wilderness where he was brainwashed and used as a tool of conquest before being killed.
Having a second chance at his second life, he swore one thing - he would not be taken advantage of in this life. Unfortunately, he had seen the incompetence of the world and their infighting even in the face of a demon invasion.
As such, there was only one way to guarantee his freedom
"This castle, this kingdom, it will be mine!"
A world that couldn't look after itself would need to be looked after.
"This world will be mine. Says who?"
"Says I, Conqueror."