Reborn: The Last Fortress

Cole Morgan wins a prize, buys a deep-sea base before the zombie apocalypse, transforming it into a survival fortress. Mutated marine creatures attack the base. He overcomes crises, obtains antidote concentrate from the Biochemical Research Institute, and cooperates with the military. After mass-producing the antidote, he leads a counter-attack, clears zombies, rescues survivors, and establishes survival bases. He leads humanity out of the apocalypse into a new era.