In XX year, the world collapsed.
It doesn't mean the collapse of reality, but the chaos of the world, the deterioration of the environment, and the corruption of the people's hearts.
All countries began to fight constantly to survive.
The whole world collapsed, but for inexplicable reasons, the war ended immediately after only a short period of one year.
In the second year after the world war, the world government was established, and the world of hundreds of countries was unified.
There is no