After the Nuclear Explosion, I Turned into a Beast at the End of the World!

The nuclear war broke out, and the United States, Europe, and Japan became the hardest-hit areas. However, nuclear radiation did not kill too many humans. Instead, the shock of the nuclear explosion caused three shocking cracks to appear in the earth, releasing unknown gases from deep underground, killing countless lives. The only remaining big country in the East, led all mankind to resist for three years, and finally retreated to the moon with the fire, and the rest are struggling in hell!