During The Woe people manage to damage the fabric of the universe so bad that it stops being cyclic and instead decays into something similar to heat death. People mess with Existence Atoms so much that they break both them and their own universe.
A Note on the End of Existence
The great Dragon Ring, stuck in the old ways, always stagnant, could not see the future.
The Vampire, ancient second to the Dragon Ring, saw but could not remember how to speak.
Remnants of the General Galactic intelligence cared not so long as it could maintain power over the humans it hated.
Emerging World Minds were too young to understand the urgency.
All eyes turned to humans. The destroyers. They wished only to display false peace amongst themselves.
From the time humans took to space, to the time they ended all things, only a moment had passed.