Natural Enemies I: Twilight of the Gods

After the Great Biological Explosion began, the genetic activity index of all living things doubled. This greatly increased the likelihood of genetic mutations, leading to disasters humanity had never anticipated. From an infinitesimal possibility, a miraculous calamity was ultimately born.

All species began to evolve at an astonishing rate, as if the god who created the world had compressed the history of animal evolution from tens of millions of years into just a few. Humanity, which had already conquered the Earth, was driven back by a terrifying animal counterattack.