"Would you be willing to tell me your story?"
"..."
Kokushibo did not answer immediately.
Demons lost their human memories slowly over time—the natural erosion of centuries. But Kokushibo was different from the others. Perhaps because the obsession had cut too deep. He had forgotten his family, his home. But he had never forgotten his own name.
Tsugikuni Michikatsu.
"I was once a member of the Demon Slayer Corps," he said at last. "That is all."
He had deliberated for some time and produced exactly one sentence.
Even from that small hesitation, Inori had a rough sense of the shape of it. Demon Slayers as a rule carried some profound hatred of demons—no one joined the Corps without a reason. And they didn't go over to the enemy easily; those who hadn't been deceived or broken simply didn't betray. Yet here stood the strongest of the Upper Ranks, dressed in a Demon Slayer's haori. The contradiction wasn't cowardice. Something far more complicated had happened to this man.
"Why did you betray them?"
She was still curious. He was likely the only being in this world who held both Breathing Techniques and a Blood Demon Art at once.
"Because I wanted to live longer."
Simple. Slightly opaque.
"That's enough for me."
"Mm. I won't press you if you'd rather leave it there."
She nodded and let it go.
There was clearly much more to this man—the flame-shaped markings on his face were familiar in a way she couldn't quite place—but digging in on a first meeting was bad form. Inori smiled, said nothing, and filed it away. There would be time.
"Rise, then, Kokushibo. Thank you for your trust. I'll be counting on you."
"I will do what I can."
—On the condition, of course, that you prove worth following.
The six-eyed swordsman stood and moved quietly to one side.
His face, wholly transformed, gave nothing away—no readable expression, not a trace of microemotion. His manner, too, was like a full vessel sealed at the top: not a drop spilled, not a crack visible. Inori had no read on him yet.
Don't rush it.
"And the other Upper Ranks?" She let a trace of impatience show. She was the Demon King—why should she be the one sitting here, waiting politely for subordinates to present themselves? If it had been Muzan, he'd have been screaming by now—arrive too late to a Muzan summons and you might just get fired on the spot.
"Upper Ranks Four and Five are unlikely to make it back," Akaza said.
"Why?"
"Because Muzan-sama sent them on a separate assignment—a highly confidential one, my dear Inori-sama." Doma cut in smoothly, stealing the reply from Akaza and slipping in a light tease at the end. This was genuinely rude behavior, but Akaza didn't bother with it—he had long since grown used to this bastard's habits. And since Inori happened to enjoy hearing herself complimented, she didn't mind much either.
"What assignment?"
"I couldn't say. Muzan-sama never shared the details, and I never dared ask." Doma offered a helpless, slightly mournful shrug.
"They went to find the Blue Spider Lily." Kokushibo spoke from where he stood, one hand resting on the hilt of his blade. Strictly speaking, he had no particular standing to volunteer this—but with Muzan dead, the secret served no further purpose.
"Impressive, Kokushibo-dono—clearly held in Muzan-sama's deepest confidence~"
Doma applauded lightly. The compliment landed with its usual aftertaste—pointed in ways that were difficult to pin down precisely. Whether his actual thoughts matched his words was anyone's guess.
"What is the Blue Spider Lily?" Inori asked. It rang a faint bell. Muzan had mentioned it during their fight.
"Muzan believed that finding it would finally allow him to overcome sunlight," Kokushibo said quietly.
"Though he will never know the answer now."
"..."
Inori blinked. So Muzan had been convinced he was on the right track—that some flower held the key. Which was wrong, of course. There was no flower. There was no formula. She had overcome sunlight by touching a piece of the Saint's Corpse—the remains that Kira Yoshikage had brought from a parallel world, which had since dissolved completely into her body and could never be extracted. No reference value whatsoever.
She didn't want to discuss this further.
"Inori-sama," Doma said, and his tone shifted slightly—less theatrical, more careful. "I think we should consider Upper Ranks Four and Five."
"Those two are Muzan-sama's most devout loyalists. That was precisely why he trusted them with this mission. If they learn you killed him, they will move against you."
"What's there to fear?" Inori waved a hand. "If they dare cause trouble, I'll take that as an opportunity to finish them off."
"They won't be reckless about it," Akaza said, tilting his head toward her. "More likely they'll go to ground once the news spreads and wait for an opening."
He paused.
"Not that their efforts would accomplish anything."
(③)
In the face of absolute power, no strategy or trap mattered. From what Akaza knew of those two—they were Muzan's true believers, perhaps the only demons who had followed him out of genuine devotion rather than fear. The rest had simply not had a choice.
Those two would not submit to Inori.
"What about Upper Rank Six?" Inori continued. "And the Lower Ranks."
At that, Nakime—who had been sitting silently in her corner all this time—plucked two soft notes from her biwa. The floor before them shifted, and a girl stepped out of nowhere, looking around with wide, disoriented eyes.
Silver hair. Gold eyes. A flower tattoo marking her left cheek and right forehead. Six ornamental pins in her hair. In those amber irises, the characters for Upper Rank, Six were written plainly. At first glance she had the look of a high-ranking oiran.
Inori perked up. She had been half-expecting a procession of rough-looking men. But here was a beautiful demon woman after all.
"What's happening... Doma-sama, why would Muzan-sama suddenly—?!"
She hadn't opened her mouth. The voice that came out was a man's.
...What?
Inori had assumed this was a man in women's clothing. But then she caught the movement: from the girl's shadow, a second figure stepped out—a gaunt, disheveled man, face and body mottled with dark patches, lank hair hanging over his eyes. Not an attractive appearance by any measure.
"Allow me to introduce them." Doma turned. "Gyutaro and his younger sister Daki—together, the twin demons of Upper Rank Six."
That explained it.
Inori nodded. She could see now that Gyutaro's eyes held the same Upper Rank Six characters as his sister's.
"What does this mean... Doma-sama?"
Gyutaro was equally bewildered. Doma, characteristically, showed extraordinary patience in explaining the entire situation again from the beginning—that from this moment forward, Infinity Castle was under new management; that the three strongest members of the Twelve Kizuki had already submitted; that Inori was the new Demon King in Muzan's stead.
Gyutaro had no particular feelings about the new ruler one way or the other. But three of the most powerful demons in existence had already accepted her, and he had no interest in making a scene.
"Your beauty is truly breathtaking, Inori-sama..."
Daki looked at the near-perfect face before her—something close to an artwork—and felt a familiar pull. She had always been helpless around beautiful things. It was why she would seize beautiful women she'd encountered and use them as food, nourishing her own beauty and strength. Whatever else this situation was, having a young and beautiful girl as the new head of demonic society felt considerably better than Muzan.
The siblings dropped to one knee.
"Your name is Daki?" Inori said the name twice, turning it over.
"Yes!"
Daki's response was immediate and eager.
"I don't like it. Change a character."
"...Ah?"
Daki stared at her, baffled.
"The name doesn't suit you." Inori leaned back, arms folded, the picture of languid authority. "Find a new one."
"Even if you say so... I don't know if I can just..."
Daki bit her lower lip, visibly distressed.
Demons who had transformed from humans typically chose new names—a mark of the new existence, or a name given by Muzan, or something assembled from the wreckage of what they'd been. The name Daki had was... well. Whoever had coined it hadn't exactly labored over it.
"What was your name when you were human?"
No particular agenda behind the question. Inori was just restless, and there was something mildly amusing about watching the girl's expression cycle through discomfort. The renaming was a genuine suggestion, though.
"I don't remember, Inori-sama."
The lovely oiran answered with careful politeness.
"Ume."
The voice was quiet but distinct, each character bitten off clearly. It came from her brother.
Daki glanced sideways at Gyutaro. His unkempt hair hung over his eyes. His face was cold.
"You remember that clearly," Inori observed. "Your own sister's human name."
"Our mother died of syphilis the day she was born," Gyutaro said. "So I named her after it."
"..."
Ume was a beautiful character—evocative of plum blossoms, early spring, sweetness and quiet endurance. Naturally, this man had opened his mouth and explained that it referenced the disease that killed their mother.
The botamochi on the table abruptly stopped smelling appetizing.
"Fine," Inori said. "Call her whatever you like."
She gave up.
Both names were bad in their own way. She would leave it. Using authority to force a name change on someone you'd just met wasn't great form anyway—and the point she'd wanted to make had already landed.
Managing these demons was not going to be simple. The Upper Ranks especially. But Inori couldn't be bothered to expend much thought on it. The options were simple: follow orders, or die.
She had no idea what she was actually supposed to do as Demon King. The practical answer: use the position to manage the balance between demons and the Demon Slayer Corps, prevent catastrophic incidents, and wait for the unexpected disruption that might finally give her a foothold on the secret of the Nameless Monster.
(③)
In the worlds before this one, defeating the final boss always triggered D4C's jump to the next world automatically. But she had killed Muzan—and nothing happened. The reason was simple: she had not reached a state of peace. The Nameless Monster's secret remained unsolved. She had not become human again. D4C wasn't going anywhere.
She might be stuck here for a very long time. It was, frankly, tedious—this was a backward era. Muzan had been impressive in his own way, enduring a thousand years of it. She hoped he hadn't spent the whole millennium just staring at walls.
"How many more are there?"
Inori picked up the last piece of confectionery, ate it, and looked at Akaza.
"The remaining Upper Ranks—Four and Five—can't come. The rest are already here." Akaza answered slowly. "As for the Lower Ranks... they should be arriving shortly."
"Ugh. I'm tired. Akaza—handle the Lower Ranks yourself. They're small fry."
She thought briefly of the Lower Rank Three she'd encountered not long after first arriving—a trembling, useless creature. She couldn't imagine what practical use the Lower Rank demons were to anyone.
They were technically part of the Twelve Kizuki. But between someone who had beaten Muzan and whatever the Lower Ranks were, calling them small fry wasn't exactly unfair. Muzan himself had grown deeply contemptuous of them—weak, cowardly, routed by Hashiras before a proper fight even started.
"Anyone who refuses to submit, or attempts to defect—you have my permission to eliminate them on the spot. Clear?"
"Understood."
Akaza didn't hesitate. He'd had his own grievances with the incompetent Lower Ranks for years.
"Kokushibo. Gyutaro. Daki. Nothing pressing? Stay here for a few days and rest. I'll explain the plan once I've actually thought one through."
"As you command."
The Demon Slayer Corps ran on its Master and its Hashiras; the demon side ran on Muzan and the top three Upper Ranks, with Nakime as a special case. That woman had accepted the new arrangement after a brief explanation from Doma, with no visible reaction and no follow-up questions. A strange creature.
Getting the Upper Ranks in order was the essential work. There was no need to have every demon in the world line up one by one to swear fealty.
Inori let out a slow breath and moved to go rest in the room she'd been assigned. Then she stopped, frowning.
The room looked opulent at first glance. It was not. Even a decent chair was hard to find—the one she'd been sitting in was low and hard, and her back had been complaining for twenty minutes.
"Doma. Get me a different chair. This one is miserable."
"I'm afraid I'm limited by what's available, Inori-sama." Doma looked genuinely pained. In this era, only common people sat on benches and chairs—a person of refinement would kneel on quality tatami. Why their new master was so attached to chairs was beyond him.
"Then build one."
Inori glanced up at a room suspended overhead.
"Take that room apart. Use the wood to build me a throne—something large, something I can actually sleep in." She tapped the small table in front of her with open dissatisfaction. "And this table. Find some iron, melt it down, and make me a proper iron desk to replace it."
"...I will do my best."
Doma produced a strained smile. He knew craftsmen—some demons who had been artisans in their human lives. Probably.
"Thank you, Nakime. Take me back to the room. I want to sleep."
"..."
Nakime inclined her head slightly and plucked her strings. The space around Inori shifted, and she was gone.
After she left, Kokushibo and Doma exchanged a glance. Their expressions settled into something between resigned and quietly thoughtful.
She was considerably easier to deal with than Muzan—at least speaking to her didn't carry the constant threat of being erased on the spot. But there was something unmistakably reluctant in her—visible in every gesture and word, like an undercurrent that never quite stilled. She didn't want to be here.
Both of them had lived a very long time. They knew how to read what people didn't say—to hear the things that words left out as clearly as the things they expressed. They had each eaten more salt than other people had walked in miles.
But they also understood the rule: as long as you have the power, we follow. That was all.
Demons were hollow creatures. Decades slid by like vapor. Perhaps the newly-made Inori simply hadn't learned yet to find comfort in emptiness.