Fighting Against the Future: Traveling Through Time to Become a Federal Recruit

Humans walked out of the earth for a hundred years and established a solar system federation, but they encountered a full-scale invasion by the Compni Empire. This is the future extension of the universe of the Counter War game. Humanity has lost most of its colonies on the moon and Mars, and has retreated to the three main lines of defense: the earth, the core fortress of Mars, and the Titan space station.