Shen Lian

Monsters are raging, the earth has fallen, and humans can only huddle within high walls and survive. Nineteen-year-old Lu Jin lives in a slum where he doesn't even deserve an identity. In order to save his sister, he moved corpses, sold blood, and exchanged his life for medicine. However, he obtained a gray summoner that had never been recorded during a beast wave. From that day on, monsters began to chase him, the city began to want him, and a group of people with strange powers also appeared one after another. And every time Lu Jin becomes stronger, he will dream of the eighteen doors. Someone was waiting for him behind the door. But no one told him—— Some powers never exist to save mankind.