I'm the Only One Left in the World

After the Rebirth Day, the global population decreased significantly. Many humans died suddenly, and some of the surviving ones turned into zombies like those in previous apocalyptic movies. According to later analysis by experts, the blue dust contained viruses that caused most humans to die or mutate. The global population of 10 billion dropped sharply. It has reached less than 1 billion. Fortunately, these 1 billion people are all humans with antibodies to the blue virus. However, the global economy collapsed and destroyed in an instant. World governments announced their reorganization one after another. The world was redivided into large and small tribal alliances, just to survive in this mutated world. The reduction of 90% of the world's human population means that most areas have become uninhabited, energy production has decreased, and regions have begun to become isolated due to frequent earthquakes due to mutations. Humanity has begun an unprecedented catastrophe. At this point, the old world began to fall. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.