Space Fortress

In 2147, Jupiter, which is 780 million kilometers away from the earth, is full of fortresses. Iron walls separated humans, and giant cannons once again exposed humans to the smoke of gunfire. The three major federations are at odds with each other, and in the deeper darkness, alien civilization has quietly approached with its sharp blade... While humans are still killing each other, the bell of annihilation has already sounded in the void where no one cares.