The invasion of the magical beasts forced the entire human domain to retreat, but some organizations remained almost unaffected by the event.
Those occupying regions far away from the border didn't need to move. The same applied to the forces that could seal pacts with some of the leaders in the army of magical beasts.
The Crystal City had worked in close contact with many different powerful creatures during its reign on the border. Its location was past the edge of the human domain, in a secret place among areas ruled by magical beasts.
The members of the Crystal City had benefitted for a long time from their unique political position. They were the first line of defense in the endless war against the magical beasts, so the other organizations would often turn a blind eye whenever they engaged in nefarious behaviors.