Horror Apocalypse: Even the King of the Underworld Is My Lackey

(Horror apocalypse + the supernatural + hoarding underworld money + reborn + underworld big shot) The terrifying apocalypse arrives. He liquidates a trillion in assets and turns it into underworld currency, then contracts powerful supernatural beings and sweeps all before him! Spend ten thousand in underworld currency, and a supernatural manager bows and scrapes. Spend a hundred thousand, and a supernatural boss treats you like a sworn brother. Spend a million, and an underworld general opens the back door for you! Given a second life, he takes back his assets and sells them off, using all the proceeds to produce underworld money. The entire internet laughs at him. But six months later, no one is laughing anymore!