Might Duy stumbled through the hospital's main entrance, his breathing ragged. The immense physical toll of inadvertently opening the Eight Gates dragged at his muscles, making his legs feel like lead. An Uchiha police officer steadied him, then guided him through a maze of corridors and waiting areas.
The sterile smell of medical alcohol and clean linens replaced the dust of the streets outside. Minutes stretched into what felt like hours as they checked at three different nursing stations. Finally, after being redirected twice, they reached the intensive care unit. Duy pushed through its heavy doors, scanning the quiet ward until he found the right bed.
His usually energetic five-year-old son lay completely still beneath the glaring fluorescent lights. Guy was hooked up to a rhythmic heart monitor, the steady beeping serving as the only proof he was alive.
Thick white gauze wrapped entirely around his head, protecting the area where surgeons had performed the emergency surgery to relieve his severe brain swelling. His right arm and wrist were bound in rigid casts, while the complex fracture on his left leg was heavily splinted and elevated above the mattress.
Duy stared at his son's ruined body for a full minute. His mind could not reconcile the battered child in front of him with the boy from that morning: hair mussed, hands sticky with rice, eyes full of a simple, wild joy.
He'd been up late the night before, darning Guy's only pair of pants and sewing on another patch, cursing softly to himself about the cost of fabric. But even then, he'd promised himself he'd do it again, every night if he had to, just to keep that bright-eyed boy clothed and warm and moving forward in a world that seemed determined to humble them both.
Seeing his son unconscious and broken stripped away the last of Duy's adrenaline. He sank heavily into the chair beside the bed. Tears welled in his dark eyes, tracking quietly down his dirt-smudged face. He reached out with a trembling, calloused hand, hovering just inches above Guy's uninjured cheek because he was too afraid to actually touch him.
"I'm here, Guy," Duy whispered, his voice cracking. "Dad is right here."
Footsteps approached from the hallway, stopping just inside the doorway. Principal Kamiko Nara stepped into the room, her typically strict and composed demeanor replaced by a look of profound sorrow. She had hurried to the medical ward immediately after Dr. Yamada informed her of the brutal assault.
"Duy-san," Kamiko said softly, moving to stand near the foot of the bed.
Duy looked up, hastily wiping his eyes with the back of his wrist. "Principal Kamiko. I don't understand... why did this happen to him?"
Kamiko's expression hardened with protective resolve. "The Uchiha Police are tracking the culprits down as we speak. I promise you, they will face justice for this." She placed a steady hand on the cold metal railing of the bed.
"The school and the Hokage's office are already in contact," Kamiko continued, her gaze unwavering. "Arrangements are being made, not just for your son's immediate care, but for your family's well-being during this time. All medical expenses will be taken care of through the Academy's support fund. If you need to miss work, or if there are any special therapies Guy requires in the future, we'll sort it out. No one is going to let you bear this alone."
She let the weight of her words settle, watching the lines in Duy's face as he struggled to process the magnitude of what she was offering. The rhythmic beep of the heart monitor filled the silence, each note a cold reminder of the fragility of hope.
Duy bowed his head, letting out a shaky breath as gratitude washed over him. "Thank you... thank you so much."
…
The morning sun cast long, angular shadows across the wooden desks of Class 1-A, illuminating faint motes of chalk dust suspended in the air. The usual lively chatter of the students ceased the moment Hiroshi Sensei walked through the door. His posture was rigid, and his normally composed expression was overshadowed by a grim heaviness.
"Take your seats," Hiroshi instructed, his voice lacking its usual encouraging warmth. The students scrambled to obey, immediately sensing the tense shift in the room's atmosphere.
Hiroshi rested his hands flat on his desk, looking over his elite class. "Before we begin today's lesson, I have some troubling news to share. Yesterday afternoon, a first-year student from Class M, Might Guy, was brutally attacked in the village by a group of people. He is currently in the intensive care unit in critical condition."
A collective gasp rippled through the room. Whispers of shock and disbelief broke out among the children. Aiko covered her mouth with trembling hands, while Hiroto clenched his fists, his face flashing with sudden anger.
Kakashi sat perfectly still, processing the harsh reality of the announcement. His sharp ears picked up a subtle shift in the branches outside the classroom window, the faint rustle of leaves that betrayed the hidden Hatake clan guards his father had secretly stationed to watch over him. Sakumo's sudden precaution made complete sense now. The cruelty of the ninja world wasn't confined to the battlefield; it lurked right in their own streets.
Beside him, Kaizen's friendly academy facade remained outwardly intact, but his deep blue eyes darkened like a stormy sea. The sounds of his classmates' panicked murmurs faded into the background. Instead, his mind replayed the sunny afternoon from just a few weeks prior, on his way to the Hatake estate. He vividly remembered the boy in the bright green jumpsuit, sweating from an intense workout, yet flashing a blindingly bright smile.
"I declare you as my other eternal rival!" Guy's enthusiastic voice echoed in Kaizen's memory, accompanied by an energetic thumbs-up.
Kaizen had accepted that rivalry with genuine amusement. At the time, it had seemed almost comical: a five-year-old in a bright green jumpsuit declaring a second eternal rival based on nothing more than Kakashi's word. But Kaizen had replied, "That sounds good to me!" and he had meant it.
Beneath the humor, he had recognized something he respected without reservation. Guy was a boy with no special talent and no clan name, who trained harder than anyone Kakashi knew and intended to make up for every disadvantage through sheer, relentless effort. Kaizen had already begun to look forward to having another fiercely driven training partner, someone whose stubbornness would push both him and Kakashi to new heights in the years ahead.
Now, the thought of that same lively boy lying broken and unconscious in a hospital bed ignited a dangerous spark within him.
It was not grief, at least not in the way his classmates were feeling it. Kaizen examined the emotion carefully, the way he examined everything, and found it to be a cold, controlled anger. Beneath that anger lay a far older certainty.
His past life as an assassin had taught him the harshness of reality from a young age and had repeated the lesson until nothing else remained: the weak were preyed upon by the strong, and sentiment changed nothing about that rule. He had died in an alley believing it. In the forty-odd days since his rebirth, surrounded by sunny training grounds and the chatter of children, he had allowed himself to wonder whether that rule applied more gently in this world.
'It doesn't,' Kaizen thought grimly. 'A Konoha child was beaten half to death inside Konoha's own walls. The only thing missing was someone strong enough to stop it.'
A cold, calculated resolve settled heavily in his chest. He had always intended to become powerful; that much was simple survival, with the war he knew that would be growing closer by the year. But survival was only the foundation. What solidified in him now was the rest of it: the relentless drive to gain absolute power, to reach a level where no threat to the comrades he had chosen could act without him knowing, and none could act without being ruthlessly crushed.
He remembered the shogi board in Principal Kamiko's office, and his answer about the king being the children of the village. Back then, it had been the correct answer. Now, it felt like a responsibility.
Outwardly, none of this showed. Hiroto's fists were still clenched and Aiko's hands still trembled over her mouth, but Kaizen's hands rested flat and motionless on his desk. His face wore the solemn, slightly shaken expression of a kind four-year-old absorbing terrible news about a friend. Only his eyes had changed, and no one in the classroom was positioned to read them.
"The Uchiha Police are already investigating the attack," Hiroshi continued, his voice steadier now but still lacking its usual warmth. "Principal Kamiko is at the hospital with Guy's family, and he is receiving the best care this village can provide." He paused, letting the words sink in. "We will still hold our lesson today, but I will not pretend this is a normal morning."
It was not. The lesson proceeded on schedule, but very little of it registered with anyone. Hiroshi's chalk scratched across the board, the students dutifully copied what he wrote, and the clock above the door crept through the hours with agonizing slowness. Kakashi did not take a single note. He sat rigidly with his eyes fixed on the window, where the branches occasionally shifted under the weight of the hidden clan guards, and his entire posture made it clear that his mind was already somewhere else.
When the final bell rang, Kakashi was on his feet before the sound had faded.
"I'm going to the hospital," he said flatly. It was not a question.
"I know," Kaizen replied, already shouldering his bag. "I'm coming with you."
…
The walk across the village carried the two boys out of the warm afternoon light and into the long, cooling shadows of early evening. Neither of them spoke. The streets around them were completely ordinary: vendors closing their stalls, a chūnin arguing with a clerk, two small girls chasing a ball down a side street. That very ordinariness struck Kaizen as wrong. Somewhere in these same streets, only a day ago, a group of people had cornered a child and continued beating him long after he had gone down, while the rest of the village had gone about its business exactly like this.
Two steady chakra presences kept pace with them along the rooftops, maintaining a respectful distance behind Kakashi.
Kaizen registered them without breaking stride, without turning his head, and, most importantly, without forming a single hand seal. Eight days ago, that would have been impossible.
The sensor department had taught him the standard doctrine on the Wednesday of the previous week, the eighth of May, in the session he had taken directly after his morning with the intelligence department.
The instructor had opened with history. The Second Hokage was said to have counted every enemy around him with nothing but a finger pressed to the earth, and to have felt men moving from a country away; the cautionary tale was the old Second Tsuchikage that the world had called the Non-Person, because no sensor had ever managed to find him when he did not wish to be found.
Then the practical. "Form the ram hand sign to help knead your chakra for sensory mode," the man had instructed.
"Once you have a good visualization of your chakra, imagine it spreading out from your body like a field or pulse."
Kaizen had formed the seal, let his awareness spread like ripples in a pond, and counted five distinct signatures on his first attempt, though it had taken his full concentration to hold even that. By the end of the single session his range had covered the entire training ground. The instructor had called it natural aptitude, drilled the concept until the session ended, and moved on.
Kaizen didn't move on though. He had gone back to the dormitory that same night and started dissecting the technique apart. One word of the instruction had snagged in his mind and stayed there: help.
The seal helped knead the chakra. It did not create the perception; it only helped shape his chakra into the receptive state the doctrine called sensory mode. And the instructor's own phrasing had offered two shapes, a field or a pulse, though the department only ever seemed to bother teaching the second.
'A crutch,' he had concluded by his third evening of practice.
'Sensory mode is a state, not an action. The doctrine treats sensing as something you do. I see no reason it can't be something you simply are.'
It was the same principle he had proven with his tenketsu mapping: what the body did clumsily with assistance, it could eventually do precisely without.
So he had drilled it, night after night, the way he drilled everything. Instead of gathering his chakra, converting it all at once, and casting it outward as a single molded pulse, he practiced converting only a whisper of it and holding the conversion in place: a thin, continuous film of sensory chakra spread across all 361 of his mapped tenketsu and renewed with every circulation cycle.
He was not pushing anything out in a wave; he was leaving the sense open, the difference between opening a door to look outside and leaving a window cracked so the sounds of the street drifted in on their own.
On the first night, a Friday, the film had collapsed after eleven seconds. By Saturday it could survive a full circulation cycle. On Sunday evening, while the academy's scientists were presumably still arguing over what his chakra had done to their crystal earlier that day, he held it from dusk until he fell asleep, and a new entry went into the private ledger in his head: CSFT. Chakra Sensory Field Technique. The department had taught him the pulse. He had built the field.
The cost was a slow, constant trickle of chakra, small enough that his unusual reserves barely noticed it. The trade-off was resolution. The field gave him presence, direction, and a rough impression of strength, nothing more; identifying a specific person still required him to stop and focus, and its reach was perhaps a third of what a properly molded pulse could manage.
But the pulse had a flaw that the doctrine barely mentioned, and no assassin would ever have tolerated: a pulse announced itself. Another sensor within range could usually feel a sensor actively working, the way a light sleeper feels a floorboard shift. The field, as far as he had been able to test it, announced nothing. It only listened; a conversion that never left his own tenketsu should read as nothing at all.
'Should,' he reminded himself. He filed the silence as an assumption rather than a fact and used it anyway. It was a dull knife beside a sharp one. But a dull, silent knife he carried everywhere, awake or training or walking to class, was worth more than a sharp, loud one that sat in a drawer until he remembered to draw it.
Within two days the field had become as unremarkable to him as hearing. He knew which classmates had reached the courtyard before he turned the corner. He knew when the last signature in the dormitory settled into sleep. In his first life he had slept with a blade under the mat and one ear open; the ear, at least, had followed him into this one.
It was this sensory field that had produced his most important discovery.
Four nights ago, on the Sunday of the chakra-nature test, running his first full evening calibration from his dormitory bed, Kaizen had brushed against a signature at the very edge of his range: faint, motionless, and suppressed almost to nothing.
He had nearly dismissed it as a limitation of the technique. But the same faint impression had been there on Monday night, in a slightly different position, and again on Tuesday, and last night he had finally felt it change over at a regular interval, one carefully dampened presence rotating out for another.
The conclusion had assembled itself with cold simplicity. This was suppression, not masking; when Sakumo hid himself in their training exercises there was simply nothing to find, while this presence had only dimmed its lamp, most likely because very few could hold a perfect mask through the hours of a night watch.
'I'm being watched. Not casually. Professionally. Shift rotations, suppressed chakra, consistent positioning with a sightline to my window. Sanctioned surveillance, most likely, given everything the leadership has seen from me.'
It didn't frighten him. If anything, it had clarified things. The village had noticed exactly how abnormal he was, and the village was behaving the way any competent organization behaved toward an asset it did not yet understand. His old organization would have done the same, though with less patience.
What mattered was his response, and his response had been to do absolutely nothing. He had not varied his routine, had not glanced toward the rooftops, had not allowed his sleeping patterns or his training habits to shift by so much as a minute. The watcher was seeing a gifted, disciplined, harmless child, because that was precisely what Kaizen intended the watcher to see. The facade now had an audience he could verify, which in a strange way made it easier to maintain.
The two presences pacing them now were a different matter entirely. They made no real effort at suppression, they held position relative to Kakashi rather than to him, and their chakra carried the settled, heavier feel of seasoned shinobi. They were the same presences that had held station beyond the classroom windows all morning. Bodyguards, not observers.
'Sakumo's precaution, most likely,' Kaizen noted, filing them away.
The field had told him all of it within the first hundred meters of the walk, and it had asked nothing of him but the discipline not to react. After what had happened to Guy, it was the correct move, and he approved of it, though he kept that assessment, like everything else, to himself.
At the very limit of his passive range, behind and above them, something flickered: faint, disciplined, familiar. There and gone. Kaizen kept walking.
Konoha General Hospital came into view as the sky began to dim, a broad, pale building with its windows already lit against the dusk. Every time its front doors swung open, they released a breath of chilled, chemical-scented air.
Inside, the sterile corridors felt suffocatingly narrow as Kaizen and Kakashi navigated the labyrinth of white walls, identical hallways, and nursing stations. The squeak of their sandals against the polished linoleum echoed unnervingly in the hush, mingling with the faint tang of iodine and the dry, metallic taste of recycled air that clung to the back of their throats.
A passing nurse glanced at their Academy bags, then at the hard set of Kakashi's jaw, and silently pointed them down the correct hallway.
The intensive care unit lay behind a pair of heavy double doors. Kakashi pushed them open without hesitation.