Gray Mist City: Night Watch

On the day when the gray fog hit and the catastrophe arrived, most of the human race collectively received box lunches. Three hundred million people are struggling to survive on more than seven billion square kilometers of land around the world. The others have either mutated or become descendants of the gray fog. People die every day, and people mutate every day. Being alive is a luxury in itself. The guardian under the gray mist, the other name of the superpower: the night watchman.