The Big Reveal
When 333 people have ascended into the statosphere as archetypes, the universe reboots. The new version is mostly the same — mostly. The personalities of those ascended people affect reality, making some changes to history. (Or so one theory goes. Who knows if this is real?)
Almost all people are changed along with it, so they never notice anything different. However, rebooting is not a tidy thing. Neverwhen people are those who fell through the cracks during a reboot. They remember their old life and can see what the reboot changed.
Neverwhen people can use gutter magick well because they're not even supposed to be in this universe. However, the statosphere seems to hate these people. Strange, unlikely accidents happen regularly as if the universe itself was trying to kill neverwhen people.