Firstly, this place lacks a highly prestigious organization capable of gathering all the city's rulers, and although the Mask of Dark Night did possess such strength, their modus operandi, inevitably shrouded in secrecy—particularly as they feverishly concealed their true identities—was destined to kindle distrust.
Secondly, trust is the most priceless commodity on the Giant Dragon Coast, unrivaled, with none daring to trust others apart from themselves, especially not the other city rulers. They feared having been betrayed, perhaps as soon as strategic discussions were settled, or that the meetings meant to devise strategies were nothing but traps aimed at seizing their powers.
Either way, the situation here turned into a chaotic mess, yet no unified or effective response was formed.
Efanso was the prime example of this.
Because the city itself was already embroiled in war, currently, it was dominated by an Undead Necromancer regime formed by a group of necromancers.