Blood Demon in Demon Slayer - Chapter 6

Chapter 6 — Collectors

The abandoned house was still where he’d left it.

Rei slipped through the door and pulled it shut behind him and stood in the dark interior breathing slowly until the sound of the town — now thoroughly, urgently awake — resolved from noise into information. Torches moving in organised patterns. Voices with the clipped, purposeful quality of people executing a search rather than panicking through one. Someone with authority was directing this. Someone had gotten organised faster than he’d hoped.

He moved to his corner. Sat down. Pressed his back against the wall.

‘Okay’, he thought. ‘So. That happened.’

The original plan had been simple: feed, leave, put distance between himself and this town before sunrise. Clean. Efficient. The kind of plan that assumed nothing would go wrong, which was the kind of plan he kept making and which kept encountering reality with the same predictable results.

A guard had seen the Blood Soldiers rise. Of course a guard had seen it. He’d been so focused on managing the overdraft situation — the panel screaming about insufficient BP, thirty-one soldiers standing in the corridor with the red-lit patience of things that didn’t have opinions about anything — that he’d tracked the guards outside the radius and missed the one inside it. Forty minutes of careful perimeter mapping, and he’d made the kind of mistake that happened when you were distracted by your own spectacular errors.

The forest was too far. He’d clocked the distance on the way in — a comfortable night-walk away from town, which was fine when you had the whole night and terrible when you had whatever remained of it before dawn made the question moot. He could run fast. He could not outrun sunrise.

He was staying.

He accepted this the way he’d learned to accept things in Room 214 — completely, immediately, without the wasted energy of wishing it were otherwise. You worked with what was true. What was true was: he was here, the town was searching for him, the sun was coming, and he had a corner and a wall and an abandoned house that nobody had entered in long enough that its smell had gone completely stale and impersonal.

He opened his panel.

—

Demon: Lv31 (354/528)
Blood Demon Art: Blood Soldier (31/31)

…

HP: 310/310 | BP: 43/310
STR: 11 | AGI: 81 | VIT: 6 | SEN: 56 | BC: 1
Free Stats: 45

—

Forty-five points. He looked at them and thought about the previous allocation — the one he’d made in the cedar hollow what felt like several lifetimes ago — and compared it against what had happened since. The AGI had kept him alive twice now in situations where alive had been genuinely in question. The SEN had given him the prison layout, the guard patterns, the early warning on Haruto’s attack, the perimeter on the western mountain slope before it could close around him.

Both had earned their investment.

He didn’t deliberate long. The prison had clarified certain things about his situation, and clarity, even when it was uncomfortable, was useful for planning.

Thirty points into AGI. Fifteen into SEN. He confirmed the allocation before doubt could suggest a more balanced approach, because balance was for people who had the luxury of being average in several areas rather than exceptional in the one area that kept saving their life.

He felt the change settle through him — subtler this time than the first allocation, because the baseline was already high, the adjustment at this level more like fine-tuning than reconstruction. But it was there.

The world didn’t sharpen — it ‘deepened’. Distance gained new texture. The searching guards outside resolved from presences into individuals, each one carrying its own specific signature of movement and sound and smell, distinct and trackable. He knew exactly how many people were in the street two buildings north without having to think about it. He simply knew, the way he knew which direction was down.

He pulled up the updated panel.

—

Demon: Lv31 (354/528)
Blood Demon Art: Blood Soldier (31/31)

…

HP: 310/310 | BP: 43/310
STR: 11 | AGI: 81 | VIT: 6 | SEN: 56 | BC: 1

—

He looked at the AGI for a moment.

Eighty-one.

He turned that number over carefully, matching it against the internal reference he’d been building from two years of watching the series and however many months of living inside it. The stat progression wasn’t linear — he’d confirmed that in his own body, felt the difference between AGI thirty-one and AGI fifty-one as something qualitatively different rather than just quantitatively more. At eighty-one, he was somewhere that the number alone didn’t quite communicate.

Upper Moon class, by his estimate.

Not Upper Moon ‘level’ — his STR was eleven, his VIT was six, his BC was a deeply embarrassing one, and his overall combat power was roughly equivalent to someone who had taped rockets to their shoes and called themselves a fighter. But in the specific, narrow dimension of ‘how fast he moved’, he was somewhere near the ceiling of what the system had produced in this world.

Kokushibo’s territory. The number one Upper Moon, the most powerful demon beneath Muzan himself.

‘Unless’, Rei thought, ‘he starts using Moon Breathing, at which point I become a very fast corpse.’

Still. AGI eighty-one meant that the average Hashira, whose speed he estimated somewhere in the sixty-range under normal conditions, would have to work hard to catch him. Not impossible — Hashira were not just fast, they were ‘precise’, trained for years in the art of making every movement count, their Breathing techniques multiplying their effective speed in ways that a raw stat comparison didn’t fully capture. And with the Demon Slayer Mark, that ceiling rose considerably.

But running away? Running away was now something he could do from almost anyone who was likely to come looking for him.

He felt better about this than he probably should have.

He looked at the BC stat.

One. Still one. He had left it untouched through every allocation, through every level-up, through thirty-six people and a prison escape and a midnight sprint through a town now actively looking for him. He had, in the abstract, excellent reasons for this — the Blood Demon Art had only just unlocked, the BC investment would take significant points to pay off, he didn’t yet understand the mechanics well enough to optimise around them.

In the slightly less abstract, the reason was: he was afraid of what he’d be able to do with more of it. The thirty-one soldiers in the Blood Realm were already more than he was comfortable having. A higher BC meant more of that. More capacity, more soldiers, more reach, more of whatever the Blood Soldier ability became as it scaled.

He understood, distantly, that this was a problem he was going to have to solve eventually. You couldn’t win a war with fast legs and good hearing. You needed power. Real power, the kind that changed the shape of a confrontation before it started.

‘Eventually’, he told himself. ‘Tonight, you survive. Eventually you build something worth surviving for.’

He closed the panel and listened to the town search for him.

—

The night passed in layers.

First the urgency — voices sharp, torches numerous, the search pattern dense and systematic. Someone competent was running it. He tracked the sweep as it moved through the streets, measuring the pattern’s logic, identifying where it would reach next. The abandoned house sat on a street the pattern had already covered, which meant they probably wouldn’t double back to it. Probably.

Then the urgency ebbed slightly — not gone, but the initial intensity giving way to the longer, more sustainable pace of a search that had found nothing and was settling in for the hours. The voices grew quieter. The torch patterns spread thinner. People who weren’t professional soldiers didn’t have infinite intensity available, and at this hour, the edge was coming off.

Then, an hour before dawn, a quality of waiting. The search still technically underway but muted, holding, not finding anything, filling time until light made the job either easier or moot.

Rei sat in his corner and thought about his soldiers.

He had forty-three BP left from the overdraft disaster. Not enough to summon the full thirty-one — that had cost three hundred and ten, a number that had seemed theoretical until it was very concretely not theoretical. He could summon two without straining what he had left.

He looked at the empty room. Looked at his hands. Considered the fact that he was hiding in an abandoned building with nothing to do and no way to leave, and that he had an ability he’d tested exactly once and under very bad conditions.

He called them.

Two of them. The first two. He didn’t think of them as having identities — he tried not to think of them as having identities — but the system had apparently tracked the order of their rising, because they came with a precision that suggested sequence mattered to it. They assembled from the Blood Realm the way the prison corridor soldiers had assembled — quietly, without drama, the dark red of them settling into stillness.

They stood in the middle of the abandoned room and waited.

He looked at them.

They looked at him. Or faced him. The eyes were there — every detail was there, the faces he’d been trying not to examine too carefully — but the gaze had a quality he couldn’t name. Present. Attending. But the thing behind attention, the restless interior life that made human eyes feel inhabited, was absent. Not empty, exactly. Just — directed entirely outward, entirely toward him, with nothing remaining for themselves.

“Can you understand me?” he asked.

Silence. Then, slowly, the nearer one nodded.

“Can you speak?”

A pause. The same one opened its mouth. Something came out — not words, exactly, but the shape of an attempt at words, the breath and the mouth position and the intent present without the sound fully arriving. It tried again. Nothing coherent.

He filed this under ‘known limitations’ and moved on.

“Fight each other,” he said. “Don’t hold back.”

They looked at each other.

Then they fought.

He watched carefully — not the outcome, which was less important than the mechanics. They moved with the bodies they’d had. The stances were human, the reflexes human, the tactics human in the way that bodies carried knowledge in their tissue even after the mind that had accumulated it was gone. One of them threw a strike that had the weight distribution of someone who had brawled before — tavern brawls, probably, something informal and repeated enough to become instinct. The other blocked it with the crossed-arm guard of someone who had been hit enough times to develop a reflex for it.

They were, as far as he could determine, completely ordinary humans.

Strong as ordinary humans were strong. Fast as ordinary humans were fast. Durable as ordinary humans were durable. Except they didn’t tire, didn’t wince, didn’t pull the next punch because the last one hurt — they fought with the complete, sustained commitment of things that had no self-preservation instinct because self-preservation required a self.

And when one of them took a hit that would have put a person down, the damage simply — healed. Slowly, drawing from his BP, but it healed. The split skin closing, the impact absorbed and reversed, the soldier returning to full function in the time it took him to blink twice.

He watched them trade blows in the middle of the abandoned room, red forms in the dark, absolutely silent, and thought about what they were and what they weren’t.

They weren’t useful against a Demon Slayer. Not as they were — level one, stat one, the capabilities of ordinary people who happened to regenerate. A competent swordsman would cut through them without breaking the rhythm of their breathing. Even a mediocre one, probably.

What they were was ‘a framework’. A shape that he didn’t have enough of himself yet to fill. The Blood Soldier ability was a tool for someone stronger than he currently was — it would scale with his level, with his Blood Power capacity, with the strength of the blood he used to build them. A soldier built from a Hashira’s blood would carry a Hashira’s combat knowledge. A soldier built from a demon’s blood would carry—

He stopped that thought.

“Stop,” he said.

They stopped. Immediately, completely, mid-swing. One of them had its fist three centimetres from the other’s face. They both held that position without strain, without the quivering tension of muscles fighting momentum, just — stopped.

He looked at them for a long time.

“Kill yourselves,” he said, quietly. He needed to know.

They did. Without hesitation, without the moment of resistance that a being with any claim to self-interest would have produced. The one with the raised fist turned it inward. The other followed. The damage was immediate and significant, and the BP started draining to repair it, and he stopped the experiment before it became expensive.

“Enough,” he said. “Go back.”

They dissolved back into the Blood Realm with the same untroubled quiet they’d done everything else with.

Rei sat in the dark and thought about absolute loyalty and what it cost the thing that was loyal and decided not to keep pulling on that thread tonight.

He was tired. Which was remarkable, because demons didn’t get tired, which meant he was mentally tired, which meant the human part of him that had catalogued water stains and rationed anime episodes was still present enough to have limits, and that was either reassuring or concerning and he didn’t have the energy to determine which.

—

‘Several hundred kilometres west, a man woke from a dream he couldn’t describe.’

The sound Kagaya Ubuyashiki made wasn’t a scream. It was quieter than that, and somehow worse — a sharp intake of breath, held, the sound of someone whose body had registered something before the mind caught up to what it was. He sat up in the dark of his room, and for a moment he simply remained there, not moving.

His wife was through the door before he’d fully returned to himself.

“My lord—” She crossed to him, already reading his posture, his breathing, the particular stillness of him. Behind her, the soft sounds of his daughters waking in the corridor, their voices low with concern.

“I am fine,” he said. His voice came out even. Practiced. He had been using that voice his whole life, the one that kept the people around him from the full weight of what he carried.

But his hands, resting on the bedding, had not quite steadied yet.

His wife sat beside him and said nothing. She had learned, over the years, when words helped and when the most useful thing she could offer was simply her presence — warm, real, uncomplicated by the things he saw that she couldn’t.

He looked at the room around him. The familiar walls. The faint light of the garden visible at the edge of the screen. The wisteria — always the wisteria, worked into everything, the family’s oldest protection and the thing he had grown up breathing.

‘What was that?’

The question wasn’t rhetorical. He was genuinely asking himself, turning over the sensation of the dream — though dream was the wrong word, because dreams were things that happened to you during sleep, and this had been something that arrived through sleep to tell him about the waking world. His family had carried this ability for generations. The instinct for danger. The reading of patterns in things others experienced as noise.

He had felt power before. He had felt the particular weight of Upper Moon demons moving through the world, the specific signature of something vast and ancient making a decision. He had felt the Twelve Kizuki like pressure changes, like the approach of a storm system you could track by the way the air moved before it arrived.

This was different.

Not vast. Not ancient. Something ‘new’. Something that had arrived in the world recently and was still finding the edges of itself — but with a shape that his instinct couldn’t categorise, and that was the part that had woken him. The unclassifiable nature of it. The way it sat outside the existing patterns he’d spent his life learning to read.

He thought about it for a long time in the dark, his wife’s hand finding his and staying there.

‘Something is waking up’, he thought. ‘Something I don’t have a name for yet.’

He would have to watch. He would have to be patient, and watch, and wait for the pattern to show him more of itself. That was the nature of this gift — it never told you everything at once. It gave you the feeling first, and the meaning arrived later, piece by piece, if you were attentive enough to gather it.

He lay back down. Let his wife settle beside him. Listened to his daughters return to their rooms, their footsteps soft and careful in the way of people trying not to disturb a quiet that was already broken.

He did not sleep again for a long time.

—

‘Sixty kilometres east, Jiro the Collector was reviewing his records when the report arrived.’

He did not look up from the notebook immediately. He finished the entry he was making — date, location, the name of the man he’d taken two nights ago on the road south of the market town — and capped his pen with the precise, unhurried motion of someone who refused to let other people’s urgency become his own.

Then he looked at the demon waiting in the corner of the room.

He listened. He did not interrupt. He had learned, over sixty years of managing a territory and the subordinates within it, that interrupting a report produced incomplete reports, and incomplete reports produced bad decisions, and bad decisions produced exactly the kind of situation he was apparently now in.

When the subordinate finished, Jiro set the notebook down on the table.

A prison floor. Forty people. Soldiers made of blood, rising in a corridor, seen by a guard who had screamed loud enough to wake the block. A demon that had then escaped through the outer wall, leaving dead guards and a town in organised panic.

He was quiet for a moment.

The thing he felt was not quite anger, though anger was in there. It was the specific, corrosive feeling of having built something carefully over a long time and watching someone else’s carelessness put a crack in it. Sixty years. Sixty years of methodical, sustainable, ‘invisible’ operation — taking what the territory could provide without taking so much that it attracted attention, maintaining enough control over the smaller demons in his range that none of them did anything that would bring the Corps down on all of them.

And now this.

“The Demon Slayer Corps will come,” he said. Not as a question. As a statement of consequence, the way you stated weather.

The subordinate nodded.

“How many are already in the region?”

“Three were stationed at the village to the west, my lord. After the logging factory incident last month—”

“I know about the logging factory.” He had noted the logging factory in his records the same week it happened. A hundred people turned in a single night, ninety-nine deaths, one missing…

He was running out of patience.

“Find them,” he said. The same evenness. The same control. The coat of patience, worn correctly. “Whoever did this is still in town — they can’t have reached the forest before sunrise. They’re hiding.”

The subordinate waited.

“I want them found and brought to me,” Jiro said. “Not killed. Not harmed beyond what’s necessary. ‘Brought to me.'”

He picked up his pen again.

In the column for notable incidents, he made a careful note.

‘Unknown demon. Blood ability. Soldiers from the dead — possible resurrection or blood construct. Prison, forty dead. Escaped through outer wall. Speed: high. Combat capability: unclear. Origin: unknown.’

He underlined the last word.

Then, below it, in smaller careful script:

‘Connected to the logging factory missing person?’

He capped the pen. Closed the notebook.

Outside, the town was still processing what had happened to it — the search patterns of frightened people, the voices of officials trying to impose structure on an event that didn’t have a clean structure. His territory, his careful territory, wearing the consequences of someone else’s first week in the world.

He stood. Moved to the window. Looked out at the last of the dark before dawn.

He was a reasonable demon. He had always been a reasonable demon. He did not act on impulse. He did not make decisions in the heat of feeling. He gathered information, assessed it carefully, and made the choice that served the longest-term interest.

Right now, the information suggested that something new had arrived in his territory. Something with abilities he hadn’t seen before. Something that had, in the space of one night, done enough damage to make his sixty years of careful invisibility significantly more fragile.

He would find it. He would talk to it. And then, depending on what the conversation produced, he would decide what it was worth.

He was, after all, a collector.

Everything was worth ‘something’, if you knew how to assess it correctly.

—

The sun rose.

Rai sat in his corner and felt it the way he always felt it — not with his eyes but with the biological alarm that had become as familiar as breathing. The quality of the air outside changed. The sounds of the remaining searchers took on the particular character of people who had transitioned from active search to waiting for something to make sense of itself.

Still here. Still undetected. Still alive.

He settled back against the wall and closed his eyes and listened to the town go about the business of a morning after something impossible, and thought about all the things he still needed to build before this world got serious about finishing what the cancer had started.

‘Survive today’, he told himself. ‘Everything else is a later problem.’

He was getting very good at later problems.