Devourer of the Deep

Global temperatures rise, sea levels rise, and the entire world is submerged. Humans had to rely on the hulls of ships to survive, or gather on the tops of mountains that were once mountains. The radioactive material leaked from the seabed not only brings a worse living environment to human beings, but also has some kind of distortion that can adapt to the ocean. The "Sea People" appeared. This new species did not lead humans to adapt to the environment. Instead, they believed that the old humans were just abandoned species of nature. They sank into the ocean alone and built a country of their own. When Link woke up, he only had a raft called the 'Symbiosis Core' and a cold system command: [Devouring is the only way to evolve]