One World, The World of Kurotsukai

The Faldón Pits
Valleys where the land is covered with fused bodies.
They inhabit: Skirted Beasts.
Risk: Extreme territoriality.
The Sepulchral Paths
Underground tunnels that cross continents.
Habitat: Plains Gravedigger.
Sign: The ground shakes days before.
The Bell Tower March
Migratory route marked by colossal remains.
Habitat: Living Bell Tower.
Effect: Attracts hordes of Lesser Forged.
IV. PROHIBITED ZONES
The Sea of ​​Bones
Ancient evaporated ocean, covered in giant skeletons.
They inhabit: Unknown entities.
Status: Unexplored.
The Crimson Horizon
Area where the sky constantly bleeds.
They inhabit: Incomplete forms and nameless aberrations.
Result: Nobody comes back the same.
Atlas Closure
In Kurotsukai, every place is reminiscent of a battle.
Every shelter is temporary.
And every path leads, sooner or later,
to something that is still struggling.

Wandering Fortresses (Wandering Cities)
Gigantic mobile cities on tracks and mechanical legs. They never stop for too long.
Defense: Heavy artillery and mobile walls.
Nearby threats: Migratory giants.
The Bastion of the Silent Edge (Order of the Silent Edge)
Fortified monastery embedded in a fractured mountain.
Function: Training, archiving, and forging of ritual weapons.
Nearby Beasts: Wanderers captured for study.
The Temples of the Crimson Pulse (Congregation of the Pulse)
Semi-buried organic structures, made of petrified flesh and living bone.
Function: Ritual creation of new beasts.
They inhabit: Experimental hybrids and mutated cultists.
The Crypts of Profound Silence (Monks of Sepulchral Silence)
Underground complexes sealed with runes.
Function: Containment of sleeping colossi.
Risk: If a seal fails, the region disappears.
Wild Rust Camps (Rust Skinners)
Temporary settlements made from the remains of beasts.
Function: Hunting, butchering and illegal trade.
Internal threat: Constant violence.
The Traveling Library (Chroniclers of Rust)
Armored caravan made up of multiple modules.
Function: Recording the world.
Protection: Absolute neutrality.

The Plains of Eternal Rust
Ancient, endless battlefields. The ground is covered in reddish dust, broken weapons, and bones.
Inhabited by: Iron Wanderers, Chimeric Samurai Warriors, Rust Crawlers.
Danger: Constant; the ground itself can rise.
The Crimson Core Crater
A pulsating abyss at the heart of the world. The earth throbs, breathes, and whispers.
Inhabited by: Core Heirs, Rising Colossi, Crater Guard.
Note: Restricted area; corruption is immediate.
Forests of Splintered Silence
Trees hardened by bone and metal, without leaves, that creak like armor.
Dwellings: Ash Stalkers, Splintered Watchers, Lesser Beasts.
Risk: Invisible ambushes.
The Sunken Cities
Ancient metropolises buried beneath living ruins. The buildings are fused with organic remains.
Dwellings: Flayed Guardians, Bearers of the Living Banner, Crimson Spectres.
Risk: High density of intelligent creatures.

Kurotsukai is not supported by a single side.
Hunters, cultists, scholars, and monsters form a fragile balance.
If one faction falls, the world changes shape.

The Sons of the Dead Field
Nature: Hybrid community
Doctrine: Adapt or die
Method: Symbiosis
Humans who accepted a controlled corruption. Their bodies adapt to the environment. They are seen as monsters by everyone, but they know secrets that no one else can survive to learn.

The Wanderers of the Broken Edge
Nature: Exiles
Doctrine: Impossible Redemption
Method: Solitary combat
Former members of failed guilds and orders. They hunt alone, without symbols or refuge. Sometimes they save cities; other times, they condemn them.

The Crater Guard
Nature: Fanatical Custodians
Doctrine: The Core must not move
Method: Absolute surveillance
Deformed warriors guard the Core Crater. No one knows if they serve the world or the Core itself. They never abandon their post.

The Crater Guard
Nature: Fanatical Custodians
Doctrine: The Core must not move
Method: Absolute surveillance
Deformed warriors guard the Core Crater. No one knows if they serve the world or the Core itself. They never abandon their post.

The Rust Skinners
Nature: Scavenger clans
Doctrine: Might makes right
Method: Brutal hunting
They don't seek to save the world. They hunt Forged to strip them of bone, weapons, and useful fragments. They live in savage packs and attack both humans and beasts.

The Monks of Sepulchral Silence
Nature: Ascetic Order
Doctrine: Denial of combat
Method: Sealing and containment
They believe that fighting strengthens the Core. Instead of killing beasts, they seal them underground or within ritual structures. They are extreme pacifists, but their ritual power is feared even by colossi.

The Wandering Cities
Nature: Human Confederation
Doctrine: Movement is survival
Method: Mobile Fortresses
Gigantic rolling structures protected by walls and artillery. They avoid combat whenever possible. They maintain trade, memory, and culture. Their politics are slow, but their fall would be irreparable.

The Congregation of the Crimson Pulse
Nature: Theurgic worship
Doctrine: War is evolution
Method: Ritual Fusion
They see the Core as an unfinished god. They don't hunt beasts: they help them be born. They experiment on living bodies, creating sentient hybrids. Many elder Forged originated in their hidden temples.

Low: Threat localized
Medium: Requires a trained group
High: Risk to settlements
Extreme: Catastrophic event
Apocalyptic: Permanent alteration of the world

Heir to the Nucleus
Class: Singular
Unique creatures born near the Core Crater. No two are alike. Considered living cataclysms.

Colossus of War
Class: Organic Titan
A giant formed from hundreds of bodies and siege weapons. It advances slowly, destroying everything in its path. Its fall often changes the landscape forever.
Gravedigger of the Plains
Class: Subterranean Colossus
A massive, serpentine creature that slithers beneath ancient battlefields. Its emergence spells total annihilation.
Living Bell Tower
Class: Wandering Colossus
A tall, slender beast with structures that emit deep, resonant sounds. Each resonance attracts Lesser Forged and unleashes monstrous migrations.

Crimson Spectre
Class: Ethereal Entity
Remnants of will without a physical body. They attack the mind, causing visions of past battles.
Lament of the Standard
Class: Apparition
Shadows emerge from fallen flags. Their lament weakens morale and provokes irrational panic.

Skirted Beast
Class: Territorial Beast
A quadrupedal mass of fused bodies with dangling bony blades. Extremely aggressive and fast despite its size.
Shield-eater
Class: Carrion Beast
Short, wide creature with reinforced jaws, specialized in crushing armor and bone plates.
Ash Stalker
Class: Stealth Beast
A feline creature with blackened bones that camouflages itself in burned areas. It attacks from shadows and rear lines.

Rust Crawler
Class: Lesser Beast
Small, quadrupedal creatures made of bones and weapon fragments. They attack in swarms and slowly wear down their prey.
Crimson Larvae
Class: Parasite
Worm-like creatures that infiltrate recent corpses, accelerating their transformation into Fleshforged.
Splintered Watchtower
Class: Organic construct
It is immobile, attached to walls or trees. It detects vibrations and emits pulses that attract larger predators.

Chimeric Warrior Samurai
Class: Aberrant Humanoid
Ancient warriors whose discipline survived corruption. They wield weapons fused to their bodies and retain advanced martial arts techniques. Highly lethal in direct combat.
Monk of the Sealed Bone
Class: Ritual Humanoid
Hunched figures covered in symbols carved into bone. They wield organic staves and seals that weaken other beasts. Less aggressive, but extremely dangerous at medium range.
Flayed Guardian
Class: Heavy Humanoid
They lack skin; their exposed musculature is reinforced by embedded metal plates. They act as guardians of important ruins.
Bearer of the Living Standard
Class: Command Humanoid
Creatures that drag banners made of human remains. Their presence strengthens other nearby beasts, making them more aggressive.

The Order of the Silent Edge
“If the monster was born of war, it will die by discipline.”
Origin
After the Fall of the Crimson Core, ancient samurai, war monks, and wandering blacksmiths understood that the beasts could not be eradicated, only contained. They founded the Order of the Silent Blade, a guild dedicated exclusively to hunting, studying, and sealing the Fleshforged.
His fame spread because he survived where entire armies disappeared.
Purpose of the guild
Hunt down and neutralize high-risk Forged.
Recover fragments of the Crimson Core.
Protect mobile human settlements.
Register and classify new beast variants.
Hierarchy and Ranks
I. Oath Candidates
Recruits without implants.
Role: exploration, support, mapping and transport.
Allowed risk: minimal.
Many do not survive the first winter.
II. Bearers of the Edge
Fully initiated hunters.
Role: direct combat against Wanderers and lesser Beasts.
Equipment: ritual weapons and partial protections of purified bone.
They form the base of the guild.
III. Crimson Guardians
Veterans carrying controlled fragments of the Core.
Role: Elimination of Skirt Beasts and major threats.
Risk: high; corruption is constant.
They are respected and feared.
IV. Masters of Silence
Guild elite.
Role: lead big game hunts and train lower ranks.
They possess total mastery of anti-forged techniques.
Few exist; almost all are scarred physically and mentally.
V. Gravediggers
Secret rank.
Role: to hunt down guild members who have succumbed to corruption.
They don't wear badges and they operate alone.
Its existence is rarely mentioned.
Internal structure
Philosophy Council: strategic leaders and custodians of knowledge.
Oathsmiths: create stabilized living weapons.
Chroniclers of Rust: They record creatures, tactics, and failures.
Symbol
A broken katana piercing a skull with crimson veins, wrapped in black cloth. It represents victory at the cost of loss.