When the Pariah charged at him, Dark Apostle Khovain remained calm.
The fortress was already convulsing around them. Alert klaxons howled through the arena complex, each metallic shriek echoing from the vaulted walls and drowning beneath the deeper thunder of distant guns.
Smoke rolled across the blood-stained floor in greasy sheets. The air tasted of hot iron, scorched wiring, and ozone. Vox-casters mounted above the galleries blared overlapping orders as heretic officers tried to turn panic into discipline.
Astartes and mortal troops stationed throughout the fortress were converging on the arena from every adjoining corridor. Armored boots hammered down gantries. Chainblades revved in the smoke.
Cult infantry formed firing lines behind shattered pillars and overturned cargo cages. In any ordinary assault, a single unarmored assassin attempting a decapitation strike in the middle of a fortified Chaos stronghold would have been absurd.
Khovain had seen more terrifying killers than this Pariah.
He had watched berserk close-combat savants tear through entire boarding teams with frenzied precision. He had watched Legionaries fight for hours after losing limbs, eyes, or half their organs.
He remembered one champion who had challenged the leader of the Foresworn warband, a warrior whose name had once been carved into the bulkheads of a frigate he had cleansed deck by deck over five brutal months. That man had moved with near-inhuman speed, endurance, and technique. He had still died.
Khovain did not believe this Soulless wretch could surpass such monsters.
Then the Thunderborn-pattern power armor appeared in the arena.
It did not arrive like a suit of wargear. It manifested like a verdict. One moment the arena floor was filled with smoke, fleeing cultists, and converging kill-teams. The next, a towering armored shell stood amid them, its plates locking open, its weapon housings rotating with smooth mechanical hunger. Cold light ignited behind its ocular lenses. Targeting beams swept through the haze and found every hostile body within range.
Then the slaughter began.
Scatter-lasers mounted along both forearms carved through the charging front ranks, cutting men apart before their screams could form. Shoulder weapons unfolded from armored housings and fired in synchronized patterns: thin searing lances that punched through ceramite and flak armor, plasma-bright orbs that burst among clustered troops, and short-range beamfire that burned precise holes through helms, chests, and ammunition packs.
The armor did not waste motion. It killed like a machine designed by someone who understood war as mathematics, logistics, and execution. Every shot solved a problem. Every burst removed a threat. Every weapon system fired without interfering with the others.
A pair of attack craft dipped low over the arena, their pilots trying to bring nose-mounted autocannons to bear. The armor's shoulder arrays tilted upward. Two beams flashed. Both craft came apart mid-flight, engines splitting open in sprays of fuel, flame, and tumbling armor panels. Burning debris rained down across the galleries, crushing heretics who had been cheering only minutes earlier.
Beside Khovain, Warpsmith Mohgrivar watched the destruction with a hollow, calculating gaze. His augmetic eyes flickered as they tracked weapon output, reload timing, heat dispersion, target prioritization, and movement efficiency. He was not praying. He was measuring.
The conclusion reached him with the weight of a curse.
Whoever had designed that armor had not expected its wearer merely to survive a battlefield. The intent was domination. A single warrior in that suit could break command posts, erase elite guards, destroy armor, suppress aircraft, and slaughter infantry simultaneously. Not a champion. Not an officer. A self-contained warzone.
Even the most perilous decapitation operation would, under such conditions, have a success probability above ninety-five percent. Perhaps higher, depending on orbital support and enemy sorcery.
Khovain understood that at the same moment. Regret hit him colder than fear. Returning to the arena had been a mistake. Had he known such a weapon waited here, he would have let the fortress burn around someone else.
"Mohgrivar," Khovain said, turning toward the Warpsmith. His voice remained controlled, but dread tightened every syllable. "You may have just gotten me killed."
Mohgrivar did not deny it. His earlier assessment of the Pariah had been sound based on available information. The Soulless one had been dangerous, but limited: fast, disruptive to witchcraft, and apparently unsupported. Mohgrivar had not accounted for a warsuit that appeared like a relic of forbidden science and fought like a Custodian murder-engine rebuilt by an unshackled savant.
"Get out of here," Mohgrivar growled.
He reached over his shoulder and detached the meltacannon mounted across his back. The weapon was his own work, a brutal thing of rune-marked alloy and blackened focusing coils, its casing scarred by heat, battlefield repair, and devotional abuse. Servo-limbs unfolded from beneath his warplate with a hiss of pistons. Mechadendrites snapped into position around him, each tipped with cutting tools, injector claws, or compact weapon muzzles.
He stepped between Khovain and the advancing Pariah.
At least the Soulless one was not yet wearing the armor.
Khovain forced himself to move. The Butcher's Nails screamed inside his skull, stabbing hot hooks of rage through his thoughts, demanding that he turn back, draw steel, and spill blood. He clenched his jaw until his teeth ached and drove the impulse down. Rage was a sacrament, but survival was strategy. The ritual had already been disrupted. If he died here, the knowledge required to repeat it died with him.
He quickened his pace toward the waiting transport.
By then, the enemy forces that had encircled Chen Ye and the others had been eradicated. Corpses smoked across the arena floor. The Thunderborn armor's ocular lenses flared once as it sent a tight-beam signal to the Celestial Engine in orbit. Then it surged toward Yoan's position, its opened shell moving with predatory speed.
The Celestial Engine answered from above.
A teleport beacon punched down from orbit and struck the arena floor in a burst of contained light. A massive extraction field unfolded from it, expanding through the smoke in a clean geometric wave. It ignored dead flesh, wreckage, and hostile bodies. It wrapped only around living friendlies marked by allied identifiers, biosignature locks, or proximity confirmation.
Chen Ye and the surviving captives vanished within seconds, pulled hundreds of kilometers away to a pre-calibrated safe zone before the Chaos forces could recover enough discipline to shoot them.
Yoan was still running.
The high dais loomed ahead, a platform of blackened stone, brass railings, and sacrificial grooves clogged with old blood. Khovain's ritual marks still smoldered across its surface. Warp-stained symbols guttered and failed wherever Yoan's null presence drew near, their sickly glow shrinking like embers under ash.
The Thunderborn armor caught up to him at the base of the dais.
Its exo-shell opened mid-stride. Plates unfolded around Yoan without slowing his charge, locking over his limbs, torso, and spine in a sequence too smooth to be mere servos. He was swallowed by the armor, not as a prisoner, but as a weapon being completed. Seals clamped shut. Neural links bit into place. Power rushed through the frame.
The moment the suit sealed around him, the jump pack roared.
Jets screamed with concentrated force, hurling Yoan upward more than fifty meters in a single bound. He crossed the last stretch of the arena like a shell fired from a siege gun and landed atop the dais hard enough to crack the stone beneath his boots. The impact sent a ring of dust and fractured ritual debris skidding outward.
Mohgrivar raised his meltacannon but did not fire yet. His augmetic gaze fixed on Yoan with something close to awe, though despair stood beside it.
"Why," the Warpsmith asked, voice rough through his vox-grille, "does Agripinaa harbor something as perfect a killing machine as you?"
Yoan looked at him.
For half a microsecond, the armor's systems pulled the question apart and offered tactical, historical, and biological interpretations. The Thunderborn were never supposed to exist.
No known Imperial process could create warriors on their level. Their augmentation did not merely enhance flesh; it rewrote the relationship between flesh, machine, and death. Their bodies endured where biology should fail. Their souls remained anchored where ordinary men would be torn loose. Machine and meat did not compete inside them. They cooperated.
Yoan did not explain any of that.
"I simply received a baptism," he said.
Mohgrivar fired.
The meltacannon discharged with a thunderclap, a spear of sun-hot energy tearing across the dais. Stone flashed to vapor in its wake. The air howled with sudden heat.
Yoan had already moved.
His armor triggered combat acceleration. To the mortals watching from below, he became a flicker: one instant before the cannon, the next behind the Warpsmith. His blade ignited in his hand, its edge wreathed in pale fire that did not behave like promethium, plasma, or ordinary flame. It burned too cleanly. Too quietly.
He drove it through Mohgrivar's abdomen and out through the front of the Warpsmith's armor.
Ceramite split. Flesh cooked. Cabling snapped. Daemon-bound machine-spirits trapped inside Mohgrivar's wargear shrieked through corrupted vox-lines as the flame crawled along the wound and found the rot beneath the metal.
Khovain, sprinting toward the dropship, heard the wet crunch of steel piercing flesh.
He turned once.
Mohgrivar was only fifty meters behind him, already collapsing to one knee. Fire crawled across the Warpsmith's frame, not spreading wildly, but moving with deliberate purpose into joints, vents, augmetics, and the places where flesh met machine. His servo-limbs thrashed once, then failed.
Khovain abandoned the dropship.
The landing platform was too exposed. The Pariah had line of sight, and the armor's weapons could reduce a transport to falling scrap before it cleared the pad. Khovain veered hard into the narrow manufactorum alleys adjoining the arena complex, choosing distance, cover, and confusion over speed.
The forge world swallowed him in smoke and metal.
He ran through service lanes lined with rusted pipework, ammunition hoists, slag channels, and maintenance shrines whose machine icons had been defaced with blood runes. Heat bled from furnace vents. Sparks rained from overhead gantries. Workers, cultists, and mutants scattered as he passed, some kneeling in terror, others reaching for weapons too late to matter.
He thought the alleys might hide him.
They did not.
Yoan's armor had already locked onto him. Biometric traces, heat bloom, gait pattern, armor fragments, heartbeat rhythm, and the faint disruptive absence of warp-reflection around the Pariah's target profile created a pursuit solution cleaner than any scent trail. Khovain's evasive turns meant nothing. Every corner he took was logged. Every route he considered was predicted.
He threw reinforcements behind him anyway.
Heretic Astartes emerged from side passages, chainaxes screaming. Mutant shock troops hurled themselves into Yoan's path. Mortal cultists dragged heavy weapons around corners and fired blind through the smoke.
Yoan did not slow.
Forearm scatter-lasers burned through charging bodies mid-sprint. Shoulder cannons snapped sideways and punched lances through Astartes eye lenses before the traitors entered melee range. A frag missile burst against his gravitic shield and flattened into a storm of harmless shrapnel. Kraken rounds struck the distortion field around his armor and veered away, their penetrator cores tumbling uselessly into walls and pipework.
One mutant with a fused mining drill for an arm lunged from above. Yoan's blade rose without his head turning. The creature fell in two burning halves behind him.
Khovain heard each failed interception through the vox-net. Screams. Static. Cut-off curses. Astartes death rattles. Then the steady tread of armored boots, never far enough behind.
Eventually, he understood.
There was no escape route. No delaying force thick enough. No transport that could lift before the Pariah reached him. No spell that would hold shape near a Soulless warrior wearing that armor.
Khovain stopped at a junction where four maintenance lanes met beneath a cracked statue of the Omnissiah that someone had crowned with skulls. Furnace light pulsed through the smoke, staining everything red.
Yoan approached from the central lane, flaming blade held low. He could have ended it with a ranged shot. He did not.
Khovain turned to face him. The Nails bit deeper, and this time he let some of the pain become fury.
"Do you even understand what you've done?" Khovain roared. "You stopped the birth of a miracle!"
Yoan kept walking.
That enraged Khovain more than any insult.
"Had the rite been completed, Agripinaa would have drowned in holy war. A Greater Daemon of the Blood God would have walked these forges, and legions of Bloodletters would have poured through after it. The loyalists would have broken. Their walls, their Titans, their sacred manufactoria, all of it would have become an altar."
His hands shook. Not from fear now, but from helpless hatred. Months of preparation had been burned away in minutes by one Soulless warrior and a suit of armor that should not exist.
"You ruined the ritual," Khovain snarled. "Oceans of blood. Months of sacrifice. Years of study. Years. I did not learn these rites after landing here. I carried this knowledge across warzones, worlds, and the corpses of men who begged gods that did not answer."
Yoan stopped just beyond sword range.
For a moment, he only looked at Khovain. Then his expression shifted behind the visor, and the armor carried the faint motion of a raised brow into the angle of his helm.
"Thanks for the flattery," Yoan said.
Khovain stared at him.
Yoan's voice remained calm, almost conversational. "You're saying I ruined a daemon-summoning ritual, wasted years of your work, and prevented a Greater Daemon from manifesting on Agripinaa. I'll take that as confirmation of mission success."
To Yoan, every curse was a tally mark. Every accusation was proof that the strike had landed where it mattered. The ritual was dead. The daemonic breach had failed. The sorcery had been made useless.
Only one task remained.
Khovain was the one who understood the rite. If he survived, the knowledge survived. That could not be allowed.
Khovain spat a string of forbidden syllables. They crawled through the air like diseased insects, trying to bite into causality, blood, pain, and the rage humming in his own skull. The words had killed lesser men. They had opened veins without blades and turned courage into screaming.
Near Yoan, they withered.
The Pariah's null aura swallowed the hex before it could become more than sound.
Khovain kept cursing anyway. He cursed Yoan, Qin Mo, the Thunderborn, Agripinaa, the false Emperor, and every machine that had dared carry salvation away from Chaos. He cursed until Yoan stepped forward and drove the burning blade through his open mouth.
The tip burst from the back of Khovain's skull.
His final words became a wet hiss around the steel.
The flame running along the blade surged, pouring through flesh, bone, and the immaterial stain clinging to him. It did not merely burn meat. It sought the warp-tainted imprint beneath it, the pattern of devotion, corruption, and oaths that had made Khovain more than a dangerous man.
Khovain convulsed once.
Then the fire consumed him. Armor blackened. Flesh collapsed into ash. The shadow of his soul flared like oil on water and vanished beneath the blade's pale light.
Sacred fire could destroy daemons. A mortal soul steeped in corruption offered less resistance.
"It's done," Yoan said.
He withdrew the blade. Khovain's remains fell apart before they reached the ground, scattering across the metal deck as gray ash and fragments of cooling armor.
At the moment of the Dark Apostle's death, Yoan felt the unseen gaze that had been pressing against him finally shift elsewhere. It had watched through the ritual, through the chase, through the execution. Now its attention receded, cold and vast, leaving only the forge world's smoke, alarms, and distant gunfire.
The pendant around Yoan's neck snapped from its cord and fell.
Before it struck the ground, the burning blade dissolved. Its edge broke apart into countless streams of glittering atoms, each thread unwinding into the air until no weapon remained. The light faded from his gauntlet.
Yoan scanned the surrounding lanes.
Heretic troops were closing in again. Mortal cultists, mutants, and traitor auxiliaries filled the approaches, their courage restored now that their leaders were dead and no one remained to tell them how pointless their charge was. Some fired. Others screamed. A few tried to flee and were shoved forward by those behind them.
They did not matter.
Yoan activated his teleport recall beacon.
Energy folded around him in a tight shroud. The manufactorum junction vanished, replaced by the hard-lit interior of the prison complex. The transition left frost on his armor and a crack of displaced air behind him.
He moved immediately.
The prisoners were held in stacked cages, restraint racks, and rune-marked holding pens where the Chaos forces had gathered sacrifices for the failed ritual. Some were workers taken from the manufactoria. Some were soldiers. Some were tech-adepts with their implants torn open. Many were barely conscious. All flinched when the armored giant appeared among them.
Yoan did not waste time explaining.
Locks blew apart under precise shots. Restraint fields died. Cage doors tore free beneath gravitic force. He marked every living captive for extraction and sent a second beacon pulse to the Celestial Engine.
"Stay low," he ordered. "Do not run unless the light fails."
Most obeyed because fear had emptied them of alternatives. A few stared at him as if he had stepped out of a shrine mural. One wounded guardsman tried to salute and collapsed before his hand reached his chest.
The extraction field unfolded around them seconds later. Captives vanished in staggered groups, pulled out before enemy troops could force the prison doors. Yoan stayed until the final biosignature cleared.
Only then did he turn toward the bloated Astartes chained near the inner cells.
The traitor was massive, his armor swollen with corrosion and pustules, his flesh distended through gaps in the ceramite. Disease-slime dripped from vents that had once housed clean exhaust ports. He laughed when Yoan approached, a wet, bubbling sound thick with rot and contempt.
Yoan shot him once through the helm, then burned the corpse until nothing inside it could crawl, whisper, or hatch.
With the captives gone and the prison emptied, Yoan triggered his final teleport.
He vanished from the forge complex entirely, leaving only dead guards, ruined locks, cooling ash, and a fortress full of heretics who still had not realized he had returned after killing their master.
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