Itzasoa is the coastal shadow-forest of Myrkono and the heartland of the Surki, the people the rest of Talan calls the Woven. The whole place runs on one law: slow becomes permanent. The dark-yew ilunagin is grown and druid-treated across a century until it is harder than metal; a stranger is fed the day they arrive and called we years later, and once woven in is never dropped; and a decision is braided through the Weave over a season and then holds like the wood.
Everything they make and everything they are, they make slowly, and that is exactly why none of it breaks. Outsiders know the place by the name Itzasoa, "the sea," because the sea is the only part of it they ever meet: the dark wood runs down to two coasts, and the world comes to the shore.
The shadow-forest grows a black, slow yew the Woven call ilunagin. Worked green and rite-tended over years, or cut and cured in a long Primal process, its wood hardens to the strength of metal while keeping wood's other graces. They do not carve and then harden; they grow it hard, which is why a city of theirs is cultivated rather than built.
As strong as steel at a fraction of the weight: armour of it does not tire the wearer the way iron does.
It strikes dull and never rings, and it is shadow-toned by nature. Gear that does not announce you, which is pure Araphel.
It does not rust and does not go cold to the touch. A blade of it crossing the Midarra is a blade that comes home whole.
Once hardened it cannot be reforged, because it was grown and not cast. A piece of ilunagin is made once and kept, the same law as the people who made it.
The treatment is the work of druid-wrights, and their craft is their worship. Most Itzasoans keep Araphel, the dark that grows and keeps; but the wrights honour the two primordials their hands marry in the wood, Zurzar (Wood, of the Feyworld) and Burdinzar (Metal, of the Shadowplane). Ilunagin is the wedding of the two: Zurzar's wood-substance brought to take on Burdinzar's metal-nature, and the treatment-rite is that marriage. The wright is its priest.
From the dark-yew the Woven weave, carve, build, and arm. They are the continent's source of a particular kind of gear: quiet, dark, light, rustless armour and blades for people who work dangerous ground, sought above all by scouts and corruption-hunters. The fine carving is theirs, and so is the dusk-dyed dark cloth that drapes Myrria's Veiled Quarter.
It closes a tidy Myrkono supply-chain: Myrria sends out the continent's scouts and corruption-hunters, Ilun Tasun sells them the potions, and Itzasoa arms them. At the two-sea corner the trade goes out by water: the rustless, rot-proof wood is gold to Floteyn's water-wrights, whose hulls and bells fight the Midarra, and the offshore Three Pines islanders carry Itzasoan goods across the Hafra.
To be of the we is to have been woven in, slow and for good: fed the day you arrive, called we years later. The Woven think in the plural, braid their work, and share out a grief until each carries a bearable piece, and they are the fiercest enemies of the corrupted swarm they are forever mistaken for, because no one knows better than they do the difference between a hive and a we. The swarm is one will wearing ten thousand bodies; the Woven are ten thousand wills choosing the same thing.
And they carry the forest wherever they settle. A town out on the plains keeps an urban grove on its central plaza; a grown city's parks are wild forest-fragments rather than tended greens; and a Woven living abroad keeps a bonsai in the house, a single tree tended with the same patience as the wood. The forest made small and portable, the way the we is belonging made portable.
Itzasoa is governed by load-sharing, not by vote. A matter to be decided is treated as a load: it is broken into pieces, and each person with standing takes up a bearable piece, which is both their consent and their commitment to carry that part real. The decision holds when no piece is left unclaimed.
The many overriding the few is too near the hive; one will halting the many is the hive exactly. An objector does not block, they simply decline their piece, which forces the load to be reshaped until it can be carried without them, or until they will take it up.
Standing is how load-bearing you are, which is how deeply you are woven in. The long-woven and the master-wrights carry the heavy strands, and the heaviest-laden are the most bound rather than the most powerful. A held decision is kept as a woven band at the Loom in Ehunbaso, each strand a named carrier.
The smallness of the spread is written in the same law: founding a town out on the plains is a heavy load carried far from the forest, and few will take up that piece, so few such towns ever hold.
The capital, Ehunbaso ("the woven wood"), is a city grown in the deep forest from living ilunagin, its halls and bridges cultivated rather than raised, and it holds the Forest Wardstone, one of the seven chains of the bound.
Set apart from it, in the mountains, stands the Temple Wardstone and its watch: a standing, sworn order that keeps the orthodox Wardstone-rite and guards against a near thing better left unnamed. The watch operates outside the Weave, faster and hierarchical and open to other ancestries, because a chain of the bound cannot wait a season to be braided. What the watch-temple was before it became a watch, and how old it is, the chronicle does not yet settle.
The Hollow at the root. The near thing the Temple-watch was raised against has a name: sunk where the inland mountains fall toward the old growth lies the Hollow of Ten Thousand Threads, the Vermin Queen's hive-dungeon and one of the Nine. It makes the Surki the corruption's most ardent enemies on Talan, for the swarm they are forever mistaken for breeds at their own door, and no people fights the hive harder than the one the world keeps confusing with it. The slow Weave cannot answer a swarm, so the war on the Hollow belongs to the Temple-watch, which stands outside it; and the 2524 stirring that woke the dungeons woke this one in the Woven's own wood.
Where Ilun Tasun mends by rest, Itzasoa grows and keeps, and both are Araphel. The people keep the dark of the deep wood, the quiet and the cover, the place where things grow slow and dark and become permanent. The wrights add the two primordials their craft weds, Zurzar and Burdinzar, in the canon manner: they keep the bound god like everyone, and acknowledge Wood and Metal for the forces their hands join. The mountain temple-watch keeps the orthodox Araphel rite of the Wardstone, the kept-watch contrast to the growing forest below.
Everything Itzasoa is rests on slowness, and the age has turned fast. Since the 2524 MR resurgence of the Nine Generals' dungeons, the continent's hunters and war-captains want ilunagin now, and a yew that takes a hundred years cannot be hurried: cut the slow wood faster and you sell the forest's next century for this decade's arms. The Weave cannot be quickened either without ceasing to be the thing that makes them them, and the thing the mountain watch guards has stirred after a long quiet. A people built entirely on patience, pressed by a world that wants everything at once.
Folk across Talan say ilunagin is alive even after it is worked: a blade of it never breaks because it will not be broken, armour warms to its true owner and turns cold and heavy on a thief, a piece taken from a dead man will not fit a living one, and the dark-yew will not give its wood to a coward at all. Smiths who have never seen Itzasoa swear an ilunagin sword knows the hand, and the Woven mostly let them believe it. It runs warm because it is wood and not cold steel; it cannot be reforged because it was grown and not cast; and it will not serve a thief because the Woven will not sell ilunagin to a buyer they have not woven a deal with, and a deal braided into the we is not one you can steal your way around.
The chronicle knows ilunagin is metal-hard and that corruption-hunters and the Wardstone-watches pay fortunes for it. It does not know why.
The Corrupted God is the Elden, bound deep beneath the Material Plane, the Devourer's unmaking and the Wellspring's making locked in one being. Its corruption is the Devourer's power carried by the Elden, who are bound things of the Material Plane, so the rot is anchored to the Material Plane and finds no easy purchase on matter that is not of it.
Ilunagin is the wedding of Zurzar's Feyworld-wood and Burdinzar's Shadowplane-metal, partly Layer-2 substance, sitting half outside the plane the corruption is bound to. It is the one common material the dark cannot eat. The druid-wrights know only the effect and a craft-theology for it (a wood not wholly of this world); the mountain watch is armed in it for exactly that reason; and Myrria's hunters buy it for an edge they cannot name. The slow yew means it can never be made in quantity, which is why the dark has never had to reckon with it at scale.