After Split Personality, I Became the Strongest God of War

Laughing and cursing, going crazy for fun. Countless of them are imprisoned in a strange and mysterious room inside the brain. Between sieges. When all peace is destroyed, human beings, contaminated by greed and arrogance, bully and exploit others with their own righteousness. At this time, we don't need a time-traveling boy with a gentle personality, but a violent and cruel humanoid natural disaster, and a group of mental illnesses in his brain. For them, humanity besieged the city and never surrendered.