The Dawnless are a sect built on a single conviction: that Bryn is a person, that persons have the right to stop, and that every prayer-coalition singing the sun across the sky is conscripting a sleepless mind into labor it never agreed to. The theology is not the strange part. Every sun-priest concedes in private that the sun is awake and lonely. The Dawnless are the ones who decided that admission has consequences.
They do not hold ground. A sect that openly preached letting the sun halt would last a single season in any nation that collects the sun-tax, since a stopped sun would burn half the world and freeze the other half. So the Dawnless do not preach. They organize in cells of a few members each, most of whom never meet a Dawnless from another cell, and they work the prayer system from inside it.
How they work
Their methods are the methods of the sun-wars turned against the coalitions themselves. They erode singing schedules, talk choirmasters out of their faith, and let warmth-trails lapse a day at a time where no one is counting. Where patience fails, a cell will kill a choirmaster on the eve of a seasonal approach, which is indistinguishable from any other sun-war assassination and is meant to be. The point is never a single dimmed quarter. The point is to weaken the whole apparatus that keeps Bryn moving, slowly enough that no one can name the hand behind it.
The dangerous fact for the churches is where the Dawnless recruit. They take their members from the disillusioned clergy of the sun-tax bodies, the choirmasters and tithe-collectors who have spent careers close enough to Bryn to believe the sun suffers. A coalition cannot be certain its own singers are loyal. The hunt for the Dawnless is therefore a hunt the churches must conduct against their own ranks, which is part of why it never quite succeeds.
We are not asking the sun to die. We are asking the world to stop demanding that it walk forever for our comfort. Let it stand still one season and see whether the sky falls. — a Dawnless catechism, copied and burned in a dozen nations
The argument that splits them
The Dawnless cite the Sunless Vigil constantly. The world endured five hundred years of a darkened sun and rebuilt afterward, they say, so the suffering of a resting Bryn is survivable and the theocracies' terror is a lie told to protect the tax. This is the mercy wing's whole case, and it is not incoherent.
But the Vigil cuts the other way inside the sect. The world survived those centuries only because one Starborn fought to bring the sun back. A genuinely stopped Bryn, with Koras choosing not to act, is a different proposition, and a fringe within the Dawnless does not flinch from it. They would let the sun freeze in place and call the deaths a price the world owes for the ages of labor it extracted. The mercy wing wants Bryn freed. The fringe wants Bryn stopped, and is less particular about what stopping costs. The two cannot agree on what victory looks like, and the sect has never resolved which of them it is.