The legendary mage Leo was turned to stone during an adventure. When he finally broke the spell, he discovered...
What? It's already a thousand years later?
What? An emperor rose up, founded an empire, and united the entire continent?
What? The succubus familiar I forced into a contract back then has become a regional manager in the Abyss?
What? The fiancées who hunted me across the entire continent are now all high-ranking members of the empire, and every one of them is a legendary mage?
What? I've become a remnant of the old era?!
Got it! I'll make the whole new world my harem!