Five hundred years later, due to the warming and environmental changes of the earth, various countries fought an indefinite "Third World War" to snatch resources. Gradually, the changes in the earth's environment were no longer friendly to them, and the population of the old humans became sparse and slowly declined... On the contrary, a new race of people called "thorny people" who were born from rose buds and suddenly appeared mysteriously rose up and began to rule the world in place of the old humans. Their body size of three to forty centimeters is more suitable for survival in today's world.
The black Thorn people "Star Sea" tribe believed that as long as the true god "Hand of the Abyss" wiped out the remaining humans on the surface, they could rebuild this new world and prepared to follow the true god in a holy war to eliminate evil humans on the surface. However, this conflicted with the ancient tribe "Snow Embroidery of Pure White Flying Armor" who advocated warning the world of the coming disaster, so a secret battle and deal-making quietly began.