"The corruption has not yet been fully purged."
With Ky'ei banished, Qin Mo turned sharply and strode deeper into the fortress.
The corridor beyond the chamber was cold and narrow, its stone walls still trembling from the violence that had just passed through them. Old masonry had split along hidden seams. Dust drifted from the ceiling in thin gray veils. The air carried the metallic bite of blood, the stink of scorched wards, and something fouler beneath it, the faint greasy residue left behind when the Warp failed to fully take hold of reality.
Yoan followed a pace behind him, weapons still raised, visor sweeping the corners.
Another daemon? Here?
The thought would have sounded absurd an hour ago. Now it felt like the beginning of a pattern.
"Yoan."
Qin Mo's voice pulled him from his thoughts.
"I'm here." Yoan quickened his pace until he walked beside him.
Qin Mo did not slow. "What you saw just now was a daemon."
Yoan's grip tightened around his weapon. He had already known the answer, but hearing it spoken plainly made the truth settle heavier.
"Daemons are not merely monsters," Qin Mo continued. "They are entities of the Immaterium, shaped by thought, will, instinct, belief, and the raw emotions of mortal souls. Some are born from hunger, some from despair, some from rage, excess, obsession, ambition, and the countless other impulses mortals feed into the Warp every second of their lives."
The fortress groaned around them. Somewhere behind the walls, damaged support machinery tried to restart and failed with a grinding cough.
"A few are little more than predators," Qin Mo said. "Things of appetite. They claw their way into reality, kill, feed, and vanish when destroyed. Others are ancient, patient, and cunning. They weave themselves into cults, bloodlines, governments, dreams, and wars. They do not need to win a battle if they can make a man choose corruption and call it necessity."
Yoan said nothing. His helmet hid his face, but the stiff set of his shoulders said enough.
Qin Mo's voice darkened. "Some bear names that can chill even the bravest Astartes. Names carved into forbidden records, whispered in inquisitorial vaults, or screamed by men whose minds have already broken. To some, they are myths. To others, they are the voices behind madness, the shadows pressing against the veil. They are not of this reality, but they hunger to manifest within it. Some call them spirits of the Warp. Others use older names. The label does not matter."
Yoan swallowed hard. He had seen mutants in the underhive. He had fought gangers who pledged themselves to unseen masters and killed cultists who carved symbols into their own flesh. Those enemies had been warped, yes, but they had still been men. Diseased men. Mad men. Damned men.
Ky'ei had been different.
Ky'ei had been wrong in a way his instincts still could not fit into words.
"Even the weakest daemon is dangerous," Qin Mo said. "They do not die as men die. Destroy their bodies here, and they are banished back to the Warp. They may be weakened. They may be delayed. They may even be scattered for centuries under the right circumstances. But they are not truly gone. So long as fear, worship, bloodshed, desire, and madness persist, they can return."
He glanced toward Yoan. "And they always try."
The two men passed beneath a shattered archway where old devotional carvings had been defaced by claw marks. Qin Mo's eyes moved across the damage once and filed it away. Yoan watched him do it and understood that Qin Mo was not merely explaining. He was hunting.
"They are difficult to bind," Qin Mo continued. "Difficult to banish. Difficult to destroy in any permanent sense. But not impossible to counter."
He spoke as they walked, voice low and controlled. He listed methods and dangers with the practical tone of a commander describing enemy armor thickness. Some Thousand Sons sorcerers, through fell and ruinous arts, could shatter a daemon's essence into fragments so scattered that it could not reform unless every shard was gathered and reforged. The practice itself was blasphemy wrapped in knowledge, but the principle mattered: daemons could be damaged in ways that endured.
Then he spoke of daemonhosts. Mortals fused with Warp entities. Vessels. Prisons. Weapons. Abominations.
"Sometimes the mortal soul remains trapped inside, crushed against the daemon's will in a nightmarish symbiosis," Qin Mo said. "Sometimes the person is erased, leaving only a hollowed shell wearing a human shape. Some fools volunteer because they believe power will obey them. They imagine themselves masters of the thing they invite in."
His mouth tightened. "They are almost always wrong."
Yoan listened in silence. Each fact landed with the weight of a weapon being placed into his hands.
Qin Mo explained enough for him to understand the enemy, but not everything. He did not mention True Names.
For one thing, learning a daemon's True Name was nearly impossible. For another, Qin Mo did not know any. And even if some impossible chain of luck placed one in his hands, reciting it in battle was rarely practical. A Grey Knight had once chanted a daemon's True Name for over an hour during an exorcism. Most soldiers would be dead long before the first syllable finished echoing off the walls.
"I always thought daemons were stories," Yoan said at last.
His voice trembled despite the cold distortion of his helmet vox.
"Stories?" Qin Mo asked.
"Things preachers shouted about. Things old women used to scare children into obedience. I believed in monsters. I have seen enough of them. Mutants. Butchers. Men who sold their souls for a full ration tin and a knife." Yoan's hands tightened around his weapons. "But daemons?"
He gave a humorless breath.
"I used to tell my daughter that if she misbehaved, a daemon would take her away."
The words left him, and then the rest of the thought struck.
He stopped walking for half a step.
"My daughter…"
Qin Mo slowed just enough to look at him.
Yoan's voice dropped. "She's a Blank. Like me."
Qin Mo nodded. "Blanks are rare. Their condition is extraordinarily difficult to pass down genetically. The Imperium has attempted to replicate them through cloning and selective programs. Most such efforts end in failure, madness, or useless corpses."
Yoan looked ahead, but his attention had gone somewhere far from the fortress corridor.
"Many despised her," he said quietly. "Even as a baby. They would not say why. They smiled when I was watching, then made signs against evil when they thought I had turned away. Some cried when she was brought near them. Others grew angry for no reason and blamed her for it."
Qin Mo offered no immediate answer.
He would not demand service from Yoan's family. He would not turn a daughter into a resource because she happened to be useful against horrors most humans could not perceive. The Imperium did that often enough. Qin Mo had no interest in copying its habits when he did not need to.
Yoan had already given enough.
For now, that was sufficient.
"This will not be the last daemon you encounter," Qin Mo said.
Yoan looked back toward him.
"You will face more," Qin Mo continued. "You will fight more. I am powerful, but I cannot stand in every corridor, guard every fortress, inspect every shadow, and break every cult with my own hands. I need people who can resist what others cannot even recognize."
He paused.
"I need you."
Yoan listened. He did not answer immediately. The corridor ahead bent toward a deeper section of the fortress where the lights had gone dim and red warning runes pulsed along the floor. After a long silence, he spoke.
"May I ask a question?"
Qin Mo inclined his head. "You may."
"If daemons are spawned from the Warp," Yoan said slowly, choosing each word with care, "and if they are formed by the emotions, beliefs, and faith of mortal souls…"
He hesitated.
"Does that mean they have gods?"
Qin Mo's answer came at once.
"Of course."
Yoan's steps slowed.
Qin Mo continued without softening the truth. "The Dark Gods are ever-present. They corrupt through whispers, need, pain, temptation, hatred, ambition, devotion, and despair. They do not always appear as monsters. Often, they appear as answers. The stronger a soul's presence in the Warp, the more easily it can attract their attention. Once they notice a soul worth claiming, they do everything within their unholy power to draw it in."
Yoan stood still for a moment.
He had always believed in monsters. He had never truly considered the gods that made them.
Qin Mo turned back toward the path ahead. "You know of the Champion of Blood incident."
Yoan's jaw tightened beneath his helmet.
"You know of Heavy Hammer," Qin Mo said. "He was a great man. A righteous man, by the standards of this world. He did not kill for pleasure. He killed because he believed he was culling the weak for a greater purpose. That conviction made him useful. It also made him vulnerable. In the end, the Warp did not need to turn him into a coward or a beast. It only had to sharpen what was already there until virtue became atrocity."
Yoan remembered blood on a floor. A man too strong to stop. A cause rotting from within because corruption had learned to wear discipline like armor.
Qin Mo's voice remained calm. "Even Deacon David—the man you executed—was not spared the touch of corruption."
A cold fear settled in Yoan's chest.
He was not afraid of daemons. Not truly. He had seen enough death to know that fear of the enemy mattered less than whether one could still pull a trigger.
He was afraid of becoming one.
Afraid of waking one day with his thoughts no longer his own. Afraid of seeing certainty where there had once been doubt. Afraid of calling cruelty wisdom, obsession devotion, and damnation duty.
"Fear not," Qin Mo said.
Yoan looked at him.
Qin Mo studied him for a moment, then spoke plainly. "Every person in this system is at risk of corruption. Except me. And except you. You are a Blank. A soulless one. If even you could be corrupted by the Warp, then we would all already be doomed."
Yoan exhaled slowly. The breath left him like pressure venting from a cracked seal.
"Good," he said. "Then I am willing to bear this burden to its bitter end."
Qin Mo smiled faintly. It was not warm, but it carried approval.
"That daemon was summoned," he said. "Someone prepared the ritual that allowed it to breach our reality. Someone gathered the materials, marked the site, spilled the blood, and believed the cost acceptable."
His grip tightened around the Aquila-staff. Metal creaked beneath his fingers.
"We are going to find them."
Yoan nodded once.
Qin Mo's voice hardened. "And we are going to burn every trace of the heresy that allowed them to summon that daemon."
"Understood," Yoan said.
....
In a darkened chamber deep within the fortress, a bound figure lay upon an iron slab.
The sorcerer.
The architect of Ky'ei's summoning.
The chamber had once been a noble's private sanctum or a secure ritual vault. Now it was a place of restraint and ruin. Iron chains ran from the slab into the floor. Warding marks had been carved across the walls in old blood and powdered bone, though most had cracked or burned out when Qin Mo shattered the ritual. The air was thick with the copper stink of fresh blood, the bitter smoke of scorched incense, and the lingering sweetness of Warp corruption gone stale.
The sorcerer's body was ruined. Flesh had been burned away in sheets. Bones were shattered beneath torn skin. One side of his chest rose unevenly with each breath, ribs grinding where they had broken and healed wrong under unnatural endurance. His hands had been flayed to the tendon. His legs were twisted at angles no living man should have tolerated.
Yet he smiled.
Because he believed he had won.
He had deceived Archon. He had made the Governor sacrifice his beloved daughter. He had watched a mighty ruler tremble, hesitate, weep, bargain with himself, and finally obey. In that suffering, the sorcerer had found a joy purer than victory.
Even now, as his blood pooled beneath the slab and dripped through the drainage grates, he laughed.
His bones rattled against the chains as his body convulsed in ecstasy.
"You know…" he rasped. "The Governor loved his daughter."
His voice was weak, but the glee inside it remained sharp enough to cut.
"A rogue trader once sold him an artifact. A relic of the ancients. A device that halted aging. There was only one."
The sorcerer's smile widened, splitting the burned skin at the corner of his mouth.
"And he gave it to her."
He laughed again, the sound wet and broken.
"Oh, how he suffered. The hesitation. The regret. The pain. Truly…"
His eyes rolled upward, shining with fever and devotion.
"Truly, my masterpiece."
His laughter rose into a howl, then collapsed into coughing as blood filled his throat.
The door was torn from its frame.
It did not swing open. It did not unlock. It simply ripped free with a shriek of metal and stone, flew across the room, and slammed into the far wall hard enough to crack the masonry.
Qin Mo stepped inside. Yoan followed at his shoulder.
The sorcerer looked at them and did not flinch. He was barely clinging to life, but fear had no place left to live in him. He did not beg. He did not curse. He did not plead for rescue from the gods he served.
Instead, he offered them a wan, unhinged smile.
"You understand, don't you?" he whispered. "The beauty of suffering. The art of despair. The perfection of pain."
Qin Mo crossed the distance in two strides and punched him.
The sorcerer's jaw shattered instantly. Bone cracked. Teeth sprayed across the slab. His head snapped sideways hard enough that one chain jerked tight and tore skin from his shoulder.
Yoan did not move.
Qin Mo leaned over the slab. "I do not care about Archon."
He raised his hand. The sorcerer's mangled jaw twisted, bone grinding as flesh crawled back into position under imposed force. It was not healing. It was repair performed without mercy.
The sorcerer convulsed as his mouth was forced into a shape capable of speech again.
Qin Mo's voice remained flat. "Tell me where you kept the summoning materials."
The heretic coughed, then laughed. Blood bubbled between his teeth.
"So much joy," he rasped. "So much accomplishment."
Qin Mo stared down at him. His patience thinned to nothing.
Around them, the chamber offered no answers. Qin Mo extended his senses through the walls, the floor, the slab, the old ritual lines, the chains, the hidden compartments, the cracked reliquaries, and the drains where blood had run. He searched for Warp-tainted relics, daemonic residue bound into matter, corrupted bone charms, skin-script scrolls, sacrificial knives carrying empyric weight, forbidden icons, anything that should have served as a catalyst.
He found blood. Pain. Residue. Dead wards. Broken geometry. Human cruelty.
But no relic.
No Warp-tainted focus.
No material anchor.
That was odd.
More than odd.
A daemon should not have been called into reality with emotion and murder alone. Not here. Not this cleanly. Not with the amount of control the ritual had displayed. Something should have carried the breach. Something should have been saturated enough with the Immaterium to leave a scar Qin Mo could feel.
Unless the ritual had used nothing from the Warp as a catalyst at all.
Qin Mo's eyes narrowed.
But that was impossible.