In the four years since gates had come to earth, the highest recorded dungeon had only appeared in Taipei, and was SS ranked.
Initially, the Republic of China declined help from outsiders and told the world that their blessed were more than capable of handling this catastrophe on it's own.
This supposed show of dick swinging ended with an entire team of 15 SS rated blessed being eliminated in under 2 hours.
Over the course of a week, the republic sent blessed after blessed into the gate in the hopes that they would be able to amend this monumental mistake.
As a result, the gate failed to get cleared in time, and a break occurred on the island of Taipei.
The death toll was catastrophic, and the entire island was destroyed as the monsters started to cross the sea.
In the end, a problem that should have been solved in a little under a week instead required the better part of a month to get under control.