Four days later, the hideout pulsed with its strange rhythm of order and fanaticism.
Communications flowed steadily through Ashina's seal network, the other cells reporting in without delay.
Targeting charts, patrol sightings, and merchant routes were updated and passed along like ritual scripture.
Training cycles ran in brutal loops, cultists sparring or bleeding into circles before staggering back to their stations.
Kimimaro, Reika, and Saya alternated between drilling their arts and overseeing the Inner Circle. As for Emi, her place had shifted.
Kimimaro had decided that keeping her close was the most efficient path, both for observation and utility.
Ashina needed to monitor the curse seal constantly to try and learn more about it, and Kimimaro never ignored his gut when suspicion lingered.
So Emi became his "personal secretary," a title that made her arch an eyebrow at first but which she played into with unnerving eagerness.
She followed him everywhere, from overseeing seal assembly to ration distribution, essence extracting ceremony, and even standing at his side while he reviewed discipline reports.
Whenever Kimimaro turned, she was there, pale eyes wide with attentive obedience, pen and paper in hand as though she were cataloguing his empire.
Outwardly, she radiated charm and enthusiasm, smiling at cultists as though she belonged here, praising Reika's precision in battle reports, even laughing at Saya's dark little jokes.
Inwardly, her monologues burned.
'Secretary? What am I, your pet clerk? One day, I'll staple your smug face to the wall. But sure, I'll take notes. Notes on every weakness you idiots let slip.'
Sometimes that duality slipped, a flash of annoyance in her tone, a twitch in her brow when Kimimaro brushed her orders with a single word.
He noticed every crack, but never called it out.
Instead, he smirked faintly, finding her more amusing than dangerous.
Saya teased her constantly. "Careful, Hyūga-chan, stick that close to him, and people might start thinking you're his little bride." She grinned, wicked and unashamed.
Reika, by contrast, muttered once under her breath — "…abandoning the old already?" — though her tone was more playfully resigned than bitter, her golden-hazel eyes cool with judgment.
Kimimaro dismissed both with his usual calm. "She stays close because I need her where I can see her. Nothing else."
That ended the talk, at least aloud.
Meanwhile, Emi's "likeability" worked as it always did.
Reika, pragmatic and sharp, eventually truly began to view her not just as a hostage but as a bloodline talent worth grooming into their Blessed circle. She always had some weird sympathy and feeling of connection for similar bloodline clan heirs.
Saya, whose entire clan had been caged once, found some bitter common ground with Emi's branch house servitude, and their exchanges, while barbed, were strangely familiar.
Emi smiled through it all, playing the role of the perfect captive-assistant, drawing people in, worming her way into their regard.
But Kimimaro was never fooled.
He refreshed her suppression seals personally, layering them with quiet precision each time, smiling faintly as he watched her mask her irritation.
He knew she was fishing for information, scraping together little fragments whenever she thought no one noticed.
He let her. It amused him to see her work so hard for crumbs he allowed her to keep.
To Emi, it was survival. To Kimimaro, it was a game.
Kimimaro's thoughts had already begun drifting toward the next step.
It was time to dig deeper into shinobi science, not just training and fieldwork.
Every day spent partially idly was a day wasted.
He had the advantage of an adult mind already, sharpened further by the compulsory education of his past life, mathematics, biology, even scraps of chemistry that no child of this world would ever know.
Layered atop that foundation, his grasp of Yang medical arts had only grown stronger here, another tool sharpening his edge.
But this was not a field he could simply throw himself into overnight.
The shinobi world was maddeningly inconsistent: electricity crackled everywhere, yet villages still paved their roads with dirt and relied on carriages to haul goods and move around.
So, this meant that instruments precise enough for real research existed, but they were incredibly rare, costly, and guarded.
Acquiring them openly would also stir the eyes of the great villages, or other big players like Orochimaru or even the Akatsuki, and that was attention he could not afford yet at all.
So it would have to be gradual.
A long collection game, pulling in tools piece by piece, building his lab in the shadows.
For now, that meant Emi, his "secretary," had little to do beyond staying close and playing assistant.
She carried no real responsibilities in his research yet.
Her role was a placeholder for now, but in time, she would either become a tool or a subject.
One evening, the hideout was quieter than usual.
Reika had shut herself away with scrolls, Saya was asleep with her scythe resting against the wall, and the rest of the cultists were scattered in their routines.
That left Kimimaro and Emi walking the stone corridors together, the sound of dripping water echoing faintly around them.
"Secretary," Kimimaro said suddenly, his tone flat as ever. "Your pace is sloppy. Were you always this clumsy, or is it just since you started wearing my seals?"
Emi puffed out her cheeks in mock indignation. "Excuse me? These are top-grade Hyūga legs you're talking about. Very exclusive stock." She tapped her calf lightly with a grin.
"People would pay good money for this level of grace."
Kimimaro glanced at her, expression unreadable.
Then, to her surprise, the corner of his mouth tilted just slightly upward.
She caught it and blinked. "Wait… was that a smile? From the great bone demon himself?"
Her lips curled into a sly grin. "What's next? A laugh? Should I prepare fireworks?"
"You mistake me," Kimimaro said calmly. "I smiled because you're amusing when you lie to yourself."
That one dug.
Emi's grin wavered for half a second before snapping back in place. "Hah. Well, if I didn't lie to myself a little, I'd probably be screaming right now. You're not exactly a stress-free boss, you know."
Kimimaro's gaze lingered on her. "So scream."
She blinked at him, caught off guard.
His eyes were sharp, but his voice was almost casual, almost curious.
She shook her head quickly and gave a coy little laugh instead. "Nah. I think I'll save my screaming for a more dramatic occasion. You'd probably just make fun of me anyway."
"You're not wrong," he said, and this time the smirk was unmistakable.
Her chest tightened strangely at the sight.
She knew better than to feel anything like relief around him, but every time he smiled, her nerves twisted in ways she hated.
To cover it, she blurted: "You know, you'd be a lot less terrifying if you just smiled more often. Like a normal person."
Kimimaro tilted his head. "And you'd be a lot less predictable if you stopped pretending you're fearless."
Her grin froze, then sharpened. "Tch. You're insufferable."
He didn't answer, only watching her with quiet patience, as if waiting to see which part of her mask would crack next.
And Emi, for all her charm and dry humor, felt her heart lurch at the weight of his gaze. It was infuriating.
She had no idea when sparring words with him had started to feel less like resistance and more like slipping deeper into something she couldn't quite name.
Kimimaro, meanwhile, thought privately with interest, "She's 'fighting back' more and more. Yet, she doesn't see the trap at all; she is sinking even deeper into my plans."
As they walked, Emi let the silence stretch, her grin still painted on, but her eyes darting in quick, sly flickers.
Inside, her thoughts were sharper.
Her gaze slid toward Kimimaro, his pale hair catching the dim lamplight, his pace calm and steady. 'He's the axis. Even when he says nothing, everything turns around him. This whole cult without him, they're just lunatics with knives and dolls. With him, they're something else.'
She had gathered plenty: their ideology, powers, basic plans, the rituals, the strange seals, the way they turned weaklings into something more than genin, the strange discipline that kept even zealots in line.
Good information, enough to fill a report that would make any major village strategist sweat.
But she clenched her teeth behind her smile. 'None of it matters. Not yet. Not unless I can slip past him.'
Kimimaro glanced sideways at her just then, as if her thoughts had leaked through her smile.
His gaze was sharp, measuring, but not unkind.
That made it worse.
Emi fought the urge to look away and instead raised her brows playfully. "What? You staring again? Should I start charging you for this?"
He said nothing, just let the faintest curve of amusement tug at his lips before turning forward again.
'He sees through everything. I can play along with the others, I can make myself likable, harmless, even useful. But unless I make him slip, all the information in the world is useless.'
So, she started making various plans about how to try and better 'conquer' him the next time.
However, then, for some reason, Emi gradually felt that something weird was going on with her thoughts and body.
At first, it was subtle.
Emi's steps slowed, her usual bounce flattening into something stiff.
Then her eyes blinked too long, her breath snagged in her chest.
Kimimaro noticed instantly, his gaze narrowing.
Then her hands snapped to her forehead, clutching the protector that wasn't there anymore.
A muffled groan leaked from her throat.
Then another, louder.
Her knees buckled, and she dropped, her fingers digging bloody crescents into her skin as if she could claw the pain out.
"A-ah—" she gasped, her voice shredded by something deeper than agony.
Then it broke into a scream, raw and unrestrained.
Saliva spilled past her lips as her whole frame shook.
Tears streamed freely, her Byakugan flaring and flickering wildly without control.
Every nerve in her face and skull screamed at once, and she had no defenses, no clever smirk, no coy comment left.
Kimimaro stood over her, jaw tight.
He felt it before he saw it: the chakra on her forehead mark igniting, swelling like molten metal poured straight into the brain and spirit alike.
The seal blazed under her skin, an ugly, hateful glow.
The pendant at his chest flickered violently, Ashina's voice rushing through with grim recognition. "That's no natural surge. This is the Caged Bird Seal, invoked remotely. Someone in the Main Branch has just triggered it — from afar."
Kimimaro's frown deepened, humming with restrained killing intent. "So. Their leash stretches farther than I imagined."
Ashina's tone sharpened. "This isn't discipline, it's annihilation. They're cooking her neurons alive. If unchecked, she'll be a drooling husk in minutes, or dead outright."
Emi screamed again, collapsing onto her side, nails clawing her own face. Her eyes rolled, spit bubbling at her lips.
For the first time in her life, she tasted not just pain, but the purest, most helpless despair, a despair so total that death itself felt preferable.
Kimimaro watched her convulse, the glow searing hotter.
His cultists recoiled, whispering, some even mistaking it for possession.
Kimimaro lowered himself slightly, the shadow of his pale hair spilling over Emi's distorted face. His own eyes burned, not with pity, but with insult.
"Main Branch…" he muttered under his breath, his voice low, venomous. "Good job. You reach across nations to crush a single girl. You truly are very mysterious. I'll return this favor to you one day."
The murderous promise in his tone silenced even the cultists' whispers.
Ashina cut in, brisk and urgent. "Stop posturing. If you want her alive, and if you want that Byakugan intact, we need counter-seals, fast. Layer suppression on suppression, jam the signal, anything to sever their reach before her brain liquefies."