Dungeon Defense (LN)

Do you know how this world ends? Become the hero and take down the 72 Demon Lords. The game that was boasted as the absolute hardest strategy game, 『Dungeon Attack』. I used to be the ‘hero’ that had accomplished everything in this game, but after answering a suspicious survey, I found myself in the game as the weakest Demon Lord, 「Dantalian」. With only my eloquent tongue and my memories of conquest as a hero—. In order to survive as Dantalian. I shall tear this world apart.