Nightfall in the Fortress.
Qin Mo materialized inside the underground sanctum in a burst of cold blue light.
The teleportation field snapped shut behind him with a brittle crackle, leaving the chamber colder than before. Frost feathered across the nearest metal floor panels, then vanished as the fortress systems compensated.
Tonight, he had not come here to conduct research.
Tonight, he had come to pass judgment.
The sanctum waited around him in disciplined silence: reinforced walls, sealed data-vaults, inactive fabrication arms folded like sleeping insects, and rows of cogitator banks humming beneath the steady pulse of blue lumen-strips.
It was one of the few places in the fortress where Qin Mo allowed no unnecessary personnel. Every machine here answered directly to him. Every data-feed, every sensor relay, every restricted file flowed through systems he had built with his own hands.
At a gesture, the central holo-screen surged to life.
A low hum rolled through the chamber as the noospheric relay began feeding raw combat footage extracted from the auspex logs of Grot's power armor. The images did not unfold smoothly. They came in jagged bursts of pict-capture, fragmented vox, targeting overlays, suit telemetry, and violence recorded too clearly for any sane man's comfort.
The First District. The arena. The crowd.
The destruction of the coliseum. The obliteration of the so-called Champion of Blood's idol.
The feed replayed each moment with forensic indifference, from the first visible fracture in Heavy Hammer's self-control to the final dust-choked collapse of the arena structure. The armor's systems had recorded everything: the pitch of the crowd's screams, the impacts against ceramite, the splintering of bone, the stress-data in Grot's gauntlets, the changing heat-signature of blood pooling around the idol's base.
No mercy. No bias. No horror.
Only evidence.
At Qin Mo's side, Yoan stood silently with his arms crossed. The blank's face remained still, but his eyes followed every movement on the screen. He had seen death before. Underhive men did not grow to adulthood without learning what a body looked like when it stopped being a person. Even so, the footage made the air feel tighter.
To Yoan, Grot's actions did not seem especially excessive. If anything, the Thunderborn had shown restraint by leaving any part of the arena recognizable. The place had been a slaughterhouse long before Qin Mo's warriors arrived. Burning it down felt less like punishment and more like cleaning an infected wound.
But Qin Mo saw something else.
Something older than the arena.
Something more patient than the men who had worshipped there.
"Did you notice how Heavy Hammer lost control?"
Qin Mo lifted one hand. The footage slowed. His finger traced a frame where Heavy Hammer's axe descended with unnatural force, the weapon blurring through dust and blood-mist.
The strike was brutal, but brutality alone did not concern him. Brutality was common in this galaxy. The Imperium rewarded it. The Underhive required it. War refined it until men mistook savagery for competence.
What concerned him was the pattern.
Heavy Hammer had not merely been angry. His movements had changed. His reactions had shortened. His attacks had become less tactical and more ritualized, each blow feeding the next, each wound driving him deeper into the same narrowing path. Vengeance had become performance. Performance had become offering.
Yoan watched the repeated sequence, then nodded slowly.
"Yeah. He got more violent." He frowned, searching for the right words. "But that's normal, isn't it? He was taking revenge."
Qin Mo's gaze did not leave the screen.
"And did you see his statue? The so-called Champion of Blood?"
Yoan's attention shifted.
The image zoomed in. The idol filled the holo-screen: a crude brass figure with oversized limbs, a jagged grin, and a crown of twisted spikes hammered from scavenged metal. It should have looked laughable. Some underhive butcher's idea of divinity. A pit-fighter's mascot elevated into a god by desperation and blood.
It did not look laughable.
Blood pooled around its base in a slow, unnatural spread. Too thick. Too dark. It did not flow like ordinary blood spilled across stone. It gathered as if the floor beneath the idol contained hidden veins feeding it upward from below.
Yoan's expression tightened. His soul, or the absence where one should have been, made him immune to many things that terrified ordinary men, but instinct still knew when a place had become wrong.
"That thing feels…" He swallowed. "Wrong."
Qin Mo nodded once. The glow of the holo-screen cut sharp shadows across his face.
"Because it is."
He paused, choosing his words with care. Yoan was useful precisely because the Warp slid off him like rain off oiled steel, but ignorance was still dangerous. Especially when the enemy was not a man with a weapon, but a hunger wearing the shape of faith.
"When a man gives himself fully to slaughter," Qin Mo said, "when killing stops being a means and becomes the purpose itself… there are powers that notice."
He did not say the name aloud, but in his mind, the conclusion was clear.
Khorne the Blood God, Lord of Rage, Taker of Skulls.
One of the Ruinous Powers, also known as the Chaos Gods of the 40k Universe, malevolent entitys of the Warp, each feeding on and shaped by the extremes of mortal emotion. Khorne embodies pure violence and fed by bloodshed, war, hatred, and the savage joy of domination. Khorne did not care whether a skull was taken for justice, revenge, duty, or madness. The blood flowed all the same.
That was the trap.
Chaos rarely began with a man kneeling before a horned monster and declaring himself damned. It began with need. With grief. With anger. With a truth sharpened into a hook.
A warrior seeking justice may hear the call of an avenger-god.
A ruler striving for perfection may heed the whispers of a deity of order.
A scholar hungry for knowledge might follow a whisper into a library whose shelves were made from screaming souls.
Most cultists never understood what they had worshipped until worship had already reshaped them. The Ruinous Powers wore whatever masks mortals would accept: ancestors, saints, fate, liberty, strength, vengeance, enlightenment. They did not always offer lies. Lies were fragile. Truths, bent at the right angle, endured.
Qin Mo thought of Argel Tal.
A once-noble warrior of the Word Bearers. A man who had sought meaning and found the abyss waiting with open arms. He had believed himself chosen by the divine before he understood what had chosen him.
He had not seen himself as a servant of Chaos, not at first. He had believed he was guided by the divine, by something greater than mere human ambition. And in the end, he had been consumed by the very power he once thought he could wield.
Heavy Hammer's path was simpler, but no less dangerous.
To him, the Champion of Blood was not a daemon, not a mask, not the edge of a greater hunger pressing through a crude idol. It was the thing that had answered him when despair and rage had stripped everything else away. It had given him strength, so he had offered loyalty.
That was how it always began.
Yoan understood before Qin Mo said more. The realization settled over him like a physical weight. His shoulders drew in slightly, and the hand resting near his belt tightened until the knuckles went pale.
The Champion of Blood was no delusion.
It was an invitation.
A door.
And Heavy Hammer had stepped through it willingly.
"He is a problem," Qin Mo said quietly. The holo-screen reflected in his eyes, cold and blue. "And I intend to solve it."
Yoan straightened at once. His earlier unease vanished beneath drilled obedience. He snapped into a flawless Aquila salute, posture rigid, chin lifted, voice steady.
"Give the order, and I will execute him."
"No." Qin Mo reached to the side and tossed a photograph into Yoan's hands. "You have a different target."
Yoan caught it cleanly. He turned the image over, looked once, and his expression hardened.
The photograph showed Deacon-Primaris David. The old priest's features were half-shrouded by the dim candlelight of his sanctum, his face lined by age, authority, and the kind of patience that came from hiding dangerous thoughts behind acceptable prayers. Relic-fire glimmered in his eyes. Something small rested in his arms, half-visible beneath the folds of his vestments.
On the back of the photograph, Qin Mo had written an exact location in precise, angular script.
The Grand Cathedral of Lower Hive Tyrone.
Qin Mo's voice turned cold.
"Kill him. And kill the creature in his arms."
Yoan's eyes flicked back to the photograph. For the first time, hesitation disturbed his discipline.
"…the Jarlcat?"
"Yes."
Qin Mo did not look pleased by the order. That made it worse. He could kill enemies without flinching. He could scrap machines, collapse fortifications, and order assaults that would leave streets carpeted in bodies if the alternative was defeat. But waste offended him. Unnecessary loss offended him more.
"It is unfortunate to waste a Warp-sensitive felinid," he said. "But I suspect he is beyond salvation."
Yoan nodded once. Whatever questions remained behind his eyes, he buried them. He slipped the photograph into an armored storage compartment and waited.
Qin Mo lifted a small artifact from the workbench.
It was a black pendant, no larger than a thumb, cut from obsidian-like material that drank the light around it. Fine blue runes glowed across its surface in controlled pulses. They were not devotional symbols. They were functional markings, circuit-patterns disguised as ornament, their light shifting as the device synchronized to Yoan's presence.
The air around it carried a faint pressure, like standing near a dormant generator that had not yet decided whether to wake.
"Take this."
Yoan accepted the pendant carefully. The moment it touched his palm, the runes flared once, then settled into a dim glow.
"Even if I am not with you," Qin Mo said, "my strength will be."
Yoan closed his fist around it.
"I will not fail, my Lord."
The teleportation field opened behind him in a tight ring of blue light. Yoan stepped into it without looking back. His outline broke into particles, then vanished.
The sanctum fell silent again.
Qin Mo stood motionless for a few seconds after Yoan departed. Then he picked up his vox-communicator.
"Grey. Get the Thunderborn ready for teleportation."
A moment later, Grey's voice crackled through the channel. No surprise. No delay. Only readiness.
"We will be assembled in two minutes. Objective?"
Qin Mo's eyes shifted to the leftmost holo-screen.
A recon drone feed displayed a slum deep within the First District. The image was grainy, distorted by smoke and thermal interference, but clear enough. A crowd had gathered among broken hab-sheds, rusted pipework, and fires burning in cut-open fuel drums. Scarred men wrapped in chains stood shoulder to shoulder around a roaring figure. Some carried cleavers. Some carried autoguns. Some held severed heads as if they were votive candles.
At the center stood Heavy Hammer.
Blood streaked his augmetic frame. His war axe rested in his remaining hand, its edge dark and wet. Firelight crawled across the weapon's brass surfaces, and the crowd answered every movement he made with animal devotion.
Qin Mo exhaled once.
"Upon arrival," he said, "execute every last one of them."
....
The slums reeked of unwashed bodies, burnt chemicals, cheap promethium, and the copper sting of fresh blood.
This part of the First District had never been clean, but the night had made it worse. Hab-shacks leaned into each other like drunkards waiting to collapse. Overhead cables sagged between rusted pylons. Wastewater dripped from cracked conduits and gathered in black puddles that reflected the fires burning in the streets. The air was thick with smoke, sweat, and chanting.
Atop a heap of severed heads, Heavy Hammer brought his axe down and beheaded another kneeling wretch.
The victim's body slumped sideways. Blood pumped across the scrap-metal platform beneath him. Heavy Hammer seized the head by its hair and lifted it high.
"PRAISE BE TO THE CHAMPION OF BLOOD!"
The mob answered at once.
"PRAISE THE CHAMPION!"
"PRAISE THE CHAMPION!"
Their voices battered the walls. Men who had been hungry, beaten, ignored, and terrified all their lives now screamed as if the act itself made them strong. Some wept while they chanted. Some laughed. Some bit their own lips bloody and did not notice.
The firelight danced across Heavy Hammer's weapon. The brass seemed to pulse, its surface catching too much red, the shadows along its edge moving out of rhythm with the flames.
"We are warriors!" Heavy Hammer roared. "The weak are offerings! The fearful are meat! The strong take what the Champion gives!"
He turned and pointed toward the last survivor of his initiation trials.
The man was little more than a trembling shape in torn clothing. Someone had shoved a rusty laspistol into his hands. The weapon shook so badly that its muzzle dipped toward the dirt. His eyes darted from Heavy Hammer to the crowd, searching for mercy and finding only teeth.
"Fight," Heavy Hammer snarled.
Then he lunged.
The wretch barely raised the weapon before the axe flashed. His arm and the pistol fell together, severed in a single clean stroke. He stared at the stump as if his mind could not yet accept what his body had lost.
Heavy Hammer stepped forward.
The man's vision faded into darkness before the second blow landed.
"FOR THE CHAMPION OF BLOOD!"
Heavy Hammer lifted the axe again, ready to continue the ceremony.
This time, the mob did not answer.
The sudden silence struck harder than any shout. Heavy Hammer turned his head. Around him, men who had been howling moments earlier now stood frozen. One raised a shaking hand and pointed past him, eyes wide with raw terror.
Heavy Hammer turned.
The air ripped open.
Three violent distortions tore through the filthy slum air, each one edged in blue-white light. Dust lifted from the ground. Fires guttered sideways. Loose chains clattered as the pressure changed.
From the breaches stepped three towering figures.
Thunderborn warplate gleamed beneath the firelight, dark metal catching blue reflections from still-active teleport fields. Their weapons were already raised. Their armor did not carry the ritual excess of ancient Imperial relics. It looked newer, cleaner, and far more dangerous for it: layered plates, sealed joints, shoulder-mounted cannons, gravitic shield housings, and the calm posture of men who had arrived with a task already decided.
One of them hurled a beacon into the center of the slum.
It struck the dirt with a heavy, resonant thunk. Blue runes snapped awake along its casing.
Heavy Hammer's eyes widened.
He knew that armor.
He had seen it before.
On his brother.
But what he failed to understand was that even after Grot had been dismissed from this operation, four others still bore the Thunderborn seal.
And the fourth had just materialized behind him.
"WATCH OUT!"
The warning came from somewhere in the mob. It saved Heavy Hammer's skull.
He twisted by instinct. A gravitic hammer passed through the space where his head had been an instant earlier, the blow close enough to tear sparks from one of his cranial augmetics.
The fourth Thunderborn was Grey.
He had waited for the first three to deploy and anchor the beacon, ensuring the slum's immediate approaches were locked down. Only then had he teleported in at point-blank range behind the target.
The first strike missed. Grey did not waste surprise by hesitating.
He shifted his grip, converting the failed downward smash into a sweeping lateral blow. The hammer's gravitic core flared. Air warped around its head. Dirt, blood, and loose metal dragged sideways in a short, violent pull.
The hammer struck.
The entire right half of Heavy Hammer's augmetic body imploded.
Metal folded inward. Flesh ruptured. Bone shattered under pressure it had never been built to endure. A spray of black blood and torn cabling painted the ground. Heavy Hammer staggered, one knee almost buckling beneath him.
He should have fallen.
He did not.
Instead, he glared up at Grey, eyes burning with fury so bright it looked less like emotion than possession.
"You attacked unarmed civilians." Grey's voice came through his helm-speakers calm, cold, and without the smallest trace of doubt. "You disgrace your brother."
Heavy Hammer roared.
"DON'T MENTION MY BROTHER!"
He stumbled backward, gripping his war axe with his remaining arm. Around him, the cultists finally remembered they were armed. Some raised pistols. Others lifted blades. One tried to run and found a Thunderborn scatter-laser tracking his spine.
Grey's visor flashed with a warning rune.
[Warp Corruption Confirmed.]
Heavy Hammer's severed mass had not fallen cleanly away. Sinew crawled from the ruined stump in twitching strands. Muscle reknitted where metal should have been dead. The war axe pulsed in his grip like a beating heart, and the flesh of his arm began to fuse into the haft as if weapon and wielder were becoming one organism dedicated to the same hunger.
Grey tightened both hands around his hammer.
"All units," he said over the squad channel, "terminate the targets."
The execution had begun.