Chapter 133: The Council of Avalon III

[City of Avalon]

Core, it is the part of something that is central to its existence or character. In this case the core itself that was mentioned is attached to an inanimate object which served as it central function which power up and systemized the inanimate object itself. The core itself is what makes Asagi's kingdom float in the sky and rise way beyond the clouds.

The core itself is the fundamental power source of the floating kingdom. Since it is the most fundamental thing of the Azure Kingdom, Asagi placed a heavily defended system circulating around the core itself in case of intruder emergency. If one was smart enough, the only tactic can one use to fight against the kingdom of angels was to take down the core itself which would kill a huge tantamount of people in just one fall.