The World Was Submerged in the Ocean, and I Unexpectedly Woke up S

When the doomsday comes, sea water pours in, and the Qinghai-Tibet Plateau becomes the last line of defense for mankind. Jiang Ning, a city wall guard who was abandoned by the lower class because of his beautiful face, his biggest wish is to fish and wait for death. Until one day, a three-meter-tall mermaid jumped onto the ten-meter city wall and forced him to die. He survived. He used a secret that must not be discovered by anyone - he kept a monster named "He Lin" inside his body. It saves his life, but also eats his flesh and bones. In order to cover up the blood on his hands, Jiang Ning performed a beautiful show of pain in front of the captain of the Dragon Corps. He thought he had deceived everyone until the old fox smiled and handed over an invitation to join the team: "Your experience has been great. Are you interested in joining the Dragon Corps?" When monsters put on uniforms, when beauty becomes the strongest disguise. In this cannibalistic world, how should Jiang Ning survive?