Rising to rule a ruined world

The world met it's end not once but twice, and seemed hell bent on its true final destruction without even realizing it. Well kingdoms, robots, superhumans and demi humans fought one another a looming doom was slowly creeping it's way to the world. Jace our protagonist was one of those sent back in a final attempt to stop it, to unite everyone to stand up to the coming threat and beat it once it comes by fostering a unity between everyone, bringing a peace and helping everyone. "yeah right, screw that! You want the world kept safe and to face that threat? Fine I'll do it but it will be with the world in my hands and under my rule. And why the hell not, I'll see about trying to snag a harem well I'm at it along with as much wealth and person power as I can handle! " "I can not agree with this course of action. Please ensure the survival of all bei-" "shut it you obsolete peice of scrap. Stand not in his way that will ensure I can taste blood once more!!!" If you like it share a stone, I'll even give a shout out every Monday as thanks in the author note to everyone who does :-)