The Cinderbound are what the World Fire made of the people who stood closest to it when the Yolus seam tore. They are bodies of packed ash and slow coal that hold the rough shape of who they once were, and they persist because a piece of their dying was taken in the same instant their living ended. They are not undead. No necromancer reads a shadow-trace on them, and they show no road down to Malstaris. They are not alive either. The rupture caught them between the two states and left them there, animate and burning and not quite either thing. More than three thousand years on, they are still in the gap.
What the fire took
A living person is held together by three threads. Two of them make the life: the soul, which climbs to the Astral after death, and the shadow, which sinks to Malstaris. The third is the spirit, the self and the name, which goes to Celestia and lasts only while the name is remembered. When the seam tore, Yolus-fire poured into the people at the center faster than any of them could have channeled it, and it did not pass through them the way shaped fire passes through a fire-worker. It lodged. In some it fused into the spirit, so that the self burns now where it once merely willed. In others it displaced part of the life-pair, sitting where a soul or a shadow should be. The result is the same wrongness either way. The threads that should carry them out of life are tangled with an element that answers a different master, and they cannot finish the passage those threads were for.
Appearance
A Cinderbound looks like a figure modeled in ash by someone working from memory. The proportions are right for what the person was, human or dwarven or otherwise, but softened and slumped, as though the body half-melted in the heat and reset before it finished. The surface is gray and powdery and sheds a little when they move. Beneath it, along the lines where the most heat pooled, runs a lattice of live coal that never goes out and never burns down, brightest where the heart would sit. They give off warmth at all hours, the same stubborn warmth that hangs over the burned country after dark with no fire in sight to account for it. Stand close and the air dries and tightens. Their eyes, when they have kept eyes, are two points of that same coal-glow.
Origin
Every Cinderbound dates to a single day, the day the World Fire began, the rupture from which the present age counts its years. The cause is not in dispute. A lone fire-paragon, working a stretch of the Yolus seam where the element ran strong, reached for more fire than the feeling inside them could sustain, and the seam tore open under the demand. Fire bled into the world at a scale no one could call back. The people nearest the working were the ones who understood it, and they died in its first moments, or began to. The Cinderbound are the ones whose dying stalled. Where the inrush was most concentrated it did not kill cleanly; it caught the threads of the dying mid-passage and welded the loose fire to them.
What burned at the center carries no name on any map now. The records of the seam and the method went into the fire with the people who kept them, and no one since has fixed the place. But the question of whether anyone was there has an answer, and the answer walks. The Cinderbound are the proof that the center was inhabited. They keep largely to the burned country still, drawn to its lingering heat and the open seam, and drift out from it by ones and twos.
What they reach for
Left alone, the Cinderbound move toward heat and toward the living, slowly and without obvious aim, and a settlement is the kind of warmth they turn toward. This much they share with the Frostwalkers of the far north, except that the pull runs the other way. A frostwalker kills heat; a Cinderbound is drawn to it, brightening along the coal-lines as it nears a hearth or a crowd.
What looks like hunger is nearer to reaching. The fire welded into them carries Fire's own temperament, the urge to grow and to feed, and that urge tugs them toward anything warm. Under it sits the older thing the rupture made: a death that was never allowed to finish. A Cinderbound is, in some way it cannot say, still trying to complete the dying it was caught in the middle of. It cannot. The thread that should carry it down is busy burning. So it reaches, and warms itself, and is not satisfied, and moves on.
When one is destroyed
A Cinderbound can be put down. Break the body apart and the coal-lattice loses its shape and the ash goes still. But putting one down is not the same as laying it to rest, and that gap is the whole of the problem.
Set it against how the other fire-touched things end. An elemental knight, the war-construct that is nothing but bound fire wearing armor, has no soul or shadow to send anywhere; when its binding fails it comes apart and the fire gutters back toward Yolus, leaving nothing behind. A Neferati, fully alive and only fire-gifted, dies the ordinary death, the soul to the Astral and the shadow to Malstaris and the spirit to Celestia for as long as the name holds. Both endings are clean. The Cinderbound get neither. Their threads are compromised, half-fused to an element that will not release them, and when the body is broken those threads do not take their proper roads. The Cinderbound does not dissolve and does not move on. What is left lingers.
That remnant is the danger most people never see coming. The destroyed Cinderbound does not vanish; the burning part of it stays where the body fell as a patch of unaccountable heat, a flame that lights without fuel, a smear of warmth that drifts a little before it fades or settles in. These are the fire-haunts that cluster thickest in the burned country and trail wherever the Cinderbound have wandered. Some are faint and burn out within a season. Some hold for years. A few have kept to the same scorched threshold long enough to earn a local name and a local habit of avoiding it. A Cinderbound is, in effect, a haunting that has not happened yet, and destroying its body only starts the haunting early.
Laying them to rest
Real rest is possible, and rare. The fire has to be parted from the thread it fused to and sent back where it came from, which means returning the borrowed Yolus-fire to the seam that bled it. Carried to the broken seam in the burned country, where the element still surges and guts on no schedule a shaper can read, a Cinderbound can sometimes be made to drain, the fire pulling back toward the wound that made it until the freed thread is light enough to finally take its road. The other way is a Void-working, a shaper able to un-make the binding directly, but those are few and the method that did it best burned with the epicenter. Most Cinderbound are simply destroyed. That answers the immediate threat and leaves a haunt where the body fell. Knowing that the harder path exists is the start of anything better.
Hooks
The one who answers. A Cinderbound has been found that still responds to a name, and the name belongs to someone recorded among the lost of the World Fire. It does not attack. It follows one particular traveler and works its ash mouth as though trying to speak. Whatever it wants, it wants from that person, and no one else can guess why.
The warm threshold. A scorched doorway in a village at the edge of the burned country has stayed warm for thirty years, and the village leaves it small offerings and does not cross it. A Cinderbound was put down there a generation back. A new headman has decided to cleanse the threshold and reclaim the house, not understanding that destroying a haunt and laying it to rest are different acts, and that the wrong one may wake more than it ends.
The draining. A fire-scholar out of Tarkhetan claims to have worked out how to drain a Cinderbound back into the Yolus seam and lay it to rest for good. They need one delivered to the seam intact, across a stretch of burned country where the seam itself makes every flame behave badly. They are paying well. They may also be wrong about the method, in which case whoever brought the Cinderbound will be standing beside it when it is not laid to rest.