The Realm Breakers appeared blue because they existed in a different dimension.
[Anomalous spatial fluctuations... food... ripe... time to feast...]
Intermittent signals came from the star system. Once decoded, they revealed that the Realm Breakers merely repeated these phrases.
The Aetherophasic Engine's extraction of higher-dimensional power was bound to attract the attention of higher-dimensional forces. The Realm Breakers immediately concluded that civilization in this lower-dimensional world had reached a flourishing stage, making it the perfect time for them to feed.
The Interdimensional Portal forced open the rift stretching across the star system. The Dimensional Anchor secured the portal, and the armies of the Extradimensional Invaders began pouring into this universe.
The extradimensional invasion had begun. The invaders from the Higher-Dimensional World would spare no living being native to this universe.
The intense signals triggered by the extradimensional invasion were immediately picked up by the Sentinel Array, and the Strategic Coordination Center swiftly responded.
As the Galactic Jade Shattering Plan progressed, the hyperlanes in the region where the extradimensional invasion occurred had been reconfigured, dividing it into several isolated regions connected by only a single hyperlane each.
Because the rules of the universes differed, the Extradimensional Demons avoided using jump drives whenever possible. Their own jump drives severely damaged space, preventing them from jumping again within that star system.
Using hyperlanes to contain them became a relatively effective countermeasure.
The extradimensional invasion officially began. Alarms were already echoing through the Sea of Stars Empire's Council, and fleets across the Empire mobilized, gathering in orbit around the Quantum Catapult.
The closest were the Yondarim Kingdom and the Moranokshiu Custodian Empire. Both had received orders from the Sea of Stars Emperor to send all their fleets to hold the star system at the region's exit.
According to the Heavenly People Empire