The DisSea Explosion was a cataclysmic event that occurred on December 12, N.F. 84, transforming what was once a normal body of water in the DisSea into an otherworldly wasteland hostile to human life: BR-000. This disaster was the earliest officially traceable Mania incident within DisCity and the first known Black Ring, and resulted in 87,231 confirmed deaths and over 200,000 Maniacs (5-8). Officially, there is very limited information available to the public on this crisis despite its successful suppression.
The Framework Against Catastrophe was established in order to respond to the disastrous fallout of the explosion (2-8). The process of getting the Black Ring under control and helping the city recover from the trauma took five years; one major element of this recovery was the construction of the Broken Frontline, which protects DisCity from what has become of the DisSea.