A huge space fortress floated in the universe, surrounded by wormhole hyperdrive base stations. From time to time, wormholes opened and closed, and fleet after fleet flew out.
The Siebert Fortress was located in the Carter Star Cluster at the border of the Flickering World. It was the headquarters of the Galactic Alliance Army in the Flickering World.
In order to fight against the World Tree Civilization, the three Universal Civilizations formed the Galactic Alliance Army during the preparation period and combined the forces of the explored universe. They also divided the explored universe's various Star Fields into numbered military regions and modified them to varying degrees.
Over the past ten years, the Flickering World had been completely transformed. The five border Star Clusters were now only left with countless defensive lines and strongholds.
