After the Nuclear Wastewater Was Discharged, I Became the Zombie King

[Good evening, viewers, the evening news is being broadcast for you...] [The impact caused by the discharge of nuclear sewage into the sea three years ago is still continuing. At noon, the scientific research team detected hundreds of mutated marine creatures moving towards the offshore basin...] [Coastal residents are requested to evacuate to inland cities in an orderly manner as soon as possible...] Three years ago, a certain country forcibly discharged nuclear wastewater into the deep sea for its own selfish interests, regardless of dissuasion. At first, there was nothing unusual. But three years later, many ocean-going cargo ships were attacked by marine creatures around the world. Mubai, who has evolved into a god-king zombie, is being brutally eaten by countless human superpowers. Mubai: "Am I... Reborn?!" After being reborn, Mubai simply gathered the wandering people, established a base in the mountains, built a steel fortress, killed zombies to collect crystals, but he began to conflict with the superpowers who also collected crystals...