With the development of science and technology and the decrease of resources, wars broke out for resources and living space. In 8642, a big explosion alarmed alien objects in the sky, and what followed was the first disaster for all mankind. Ever since the big explosion in 8642, the fate of mankind has been shattered into countless fragments, and all they can do is to find a possibility of piecing together the future among these fragments.
When survival is threatened, what should we do? For background
Mission: A community with a shared future for mankind