The last moon of the Somuli's four moons had yet to disappear when a massive magic fluctuation crackled outside the Armakea Castle's main gate.
Every Knight and Officer on patrol was alerted at once and acted accordingly. During emergencies like this, each would have to take their designated position around the castle. These positions were actually energy points connected to a large array formation that was located below the castle grounds.
As a matter of fact, the large array formation was one of the first lost technologies inherited by the Armakea Royal Family from their ancestors. Over time, they decided to build the main castle above it since they could not relocate or replicate the array formation. This was pretty much the same case with the array formation at the Armakea border, where the HQ was built.