A man who lived his life as an exhausted worker in a meaningless system dies without glory or purpose. He is reborn in the world of Achilion, a land divided between mortal kingdoms and demon nations. There, he is designated as the Final Demon Lord Candidate, with a mission called Total Ascension Victory. Twenty years before the Hero’s arrival, he must rise through fractured demon kingdoms, tribes, and the Eternal Demon Sovereignty. To unify the demon world and reach ultimate ascension before the Hero ever arrives. But whether the Hero is his end… or the beginning of something greater, remains unknown.