Disaster of Saturn

Human beings are too small in the universe. The aftermath of wars between advanced civilizations has caused various disasters. Humanity is almost extinct. Animals and plants have mutated, and the environment has deteriorated. Humanity seems to have returned to the barbaric age. All kinds of dangerous and powerful creatures emerge in an endless stream. In order to survive, they can only continue to become stronger. As humans evolve and adapt, civilization is gradually restored, and then goes out of the galaxy to develop into a higher civilization.