Savior but Villain

When I traveled back in time, I thought I could be a righteous partner, but at the beginning, the ancient god resurrected and conspired. The opening of the gate of hell is just the beginning, and the shuffling of the world is just the gap between the arrival of the next round of storms. When the crisis comes, people suffering from internal and external troubles are still fighting each other. How can it be possible to save mankind by cooperating with such insects? Become a judge and use the fire of sin to rebuild the glory of the human race!