Humanity's demand for the earth exceeded the limit of what the earth could provide, so humans began to travel to places outside the atmosphere. They discovered new energy sources [energy crystals] on other planets. This also allowed human science and technology to grow rapidly. New frontiers and energy sources brought hope, a new beginning, but it was far away. The distance has hatched an ideology that is hostile to the homeland we know, and that is the Immigration Defense Front. The Immigration Defense Front refuses to accept the rule of the Earth. They have established an army, resisted reunification by force, and left the Earth with blood and violence. They desire absolute hegemony and are ready to destroy the Earth Federation at any time.
