Dungeon Defense

After his parents pass away, a young man inherits 500 million yen and decides to live freely. He joins the online game "Dungeon Attack," becoming the first to defeat all the Demon Lords. Upon completing the game, he answers a mysterious question and is transported into the game world. He is reborn as Dantalian, the weakest and lowest-ranked Demon Lord, placed 71st. Relying on his memories of defeating the strongest Demon Lord and his ability to speak persuasively, he seeks to survive in this harsh new reality. The story follows his efforts to rise and reclaim what was lost.