A few hundred years later, a global virus broke out on the earth, indiscriminately infecting all living things on the earth.
What is puzzling is that this virus is not 100% fatal, and its mortality rate is very low in comparison. At the same time, unprecedented mutant species have appeared in this infected environment... Dogs with red eyes and fangs, ferocious-looking domestic pigs, and even ordinary livestock chickens have grown to half a human height, and their attack power has skyrocketed... They will attack uninfected humans, but they will not attack infected people...
Although not all infected people will lose their minds, they still have to live separately from uninfected people, so the world is divided into two regions... More and more infected people who are not mentally ill are becoming dissatisfied and trying to make all mankind infected uniformly...
Humanity established the Human Defense League for this purpose. At the same time, an organization called "Dark" rose up in the future. They have the same goal as the Human Defense League - to protect the last piece of pure land on the earth.
Intention: Positive and uplifting