A month passed. Life fell back into rhythm.
Roan came back from his competition, where he'd become the top something-or-other "Drum." I've always had a very selective memory when it comes to dumb names. Anyway, he showed them who had the biggest muscles.
My schedule got a little too familiar. I had plenty of free time—several days a week. In a world without wide‑spread internet, that got kind of boring.
It's not like I was tired of what I usually did. I could've just spent even more time on training. But I wanted something… different.
So yeah, I got hit with some wild thoughts about how I was a future shinobi, a killer and all that. Not that I liked the idea—killing wasn't part of the social code where I came from, so I had mixed feelings about it. But given the threats to this world, the same Akatsuki, killing is the most efficient way to deal with a threat. It's easier, and the requirements for it are lower than for capturing someone alive. So with my limited strength—of which I might not have any surplus by the time it matters—I'll have to use any means available. There's no room for morality when it's my existence on the line…
Ugh. Cheerful stuff. Luckily, I shook it off pretty fast and moved on to something a bit more upbeat.
Right now I figured I should probably hurry up and learn how to fight. The earlier I start, the stronger I'll be later. With that in mind, I went to the Hokage. Again.
I don't know whose pockets he dipped into, but the old man said he'd take care of this too. A week ago I'd gone home happy, expecting some martial arts pro, the same way Roan was a pro at physical conditioning.
Only when I showed up at the closed underground training ground—yeah, Konoha has those—what I saw was an old hag. Really old, with a cane. And something about her rubbed me the wrong way immediately.
"Uh… Hello, Elder-sama?" I greeted the granny with the squinted eyes, two pinned-up buns of almost completely gray hair, loose robes and, as mentioned, a stick.
This was Hiruzen's former teammate, Utatane Koharu, one of the village elders and a very respected person in Konoha.
"Hmph," came a dry, emotionless grunt. Koharu slowly ran her gaze over me from head to toe, sizing me up with narrowed eyes like a vegetable at the market. "Uzumaki Naruto. Hiruzen has spoken a great deal about you. Exaggerating, I presume."
"Oh?" That caught my interest. "About what, exactly? And why 'exaggerating'?"
"He was right about your curiosity," she nodded flatly. "And about a certain… lack of restraint. As for your persistence, 'great talent' and 'ability to learn quickly'… You lack tactical training and an understanding of real combat. I am not here to dance circles around you or praise every successful jump. My task is to assess your potential and, if it exists, make you into a tool useful to Konoha. If not—then we shouldn't waste valuable resources on you."
"Hmph," I choked on air. "A tool? You should choose your terms more carefully when you talk to me."
I disliked her even more.
I tried to pin her down with my stare as hard as I could, but all I got back was wide, surprised eyes. Apparently no one had talked to the Elder like that in a long time.
"A tool implies an owner. But with me, the only kind of relationship on the table is a partnership. Am I being clear?" I spelled it out, just in case she was slow on the uptake.
"…Insolent brat!" the old woman shrieked in a suddenly high voice, and angry chakra flared off her.
A chill ran down my spine, but I crushed the feeling quickly. Her chakra was… weak? Way too weak compared to mine.
"You've been granted a great honor! And you turn your nose up at it! No matter… I'll educate you right now…"
She went to step forward with very clear intentions, then reflexively jumped back as I released my chakra.
The air hissed softly from the energy pouring out of me.
The amount I currently had focused in my body was three times the Elder's entire reserve. And if I wanted to, I could fill it back up more than ten times over.
From the excess of chakra reinforcing my body I felt my hair stir, my clothes billow in the vortices of blue energy. My heart started pounding like a war drum as adrenaline raced through my arteries. Every cell of my body felt filled with power that could burst out at the slightest command.
"Educate me? You?" I was a little confused—there was no killing intent in her chakra. But at the same time, anger at her dismissive attitude boiled up in me and bled straight into my aura. "What can a fossil crippled by three wars even teach? Hiruzen showed that the answer can be 'a lot.'" I raised my hand and jabbed a finger at the Elder. "But you? I doubt you can offer anything but violence."
Koharu opened her mouth to say something, but then a door at the far end of the training ground slammed open, and two ANBU strode in.
Not as fast anymore. After working on the Body Flicker and enhancing my vision with chakra, I could see their blurred movements now. My sphere-vision had sharpened up too; with some effort it kept pace with my normal sight.
"Elder-sama, Uzumaki-san," one of them began as they came closer. "We detected spikes of chakra with intent that doesn't match the nature of your assignment here." After this long sentence he looked us over and, a bit uncertain, added, "How should we interpret that?"
"…As a misunderstanding," Utatane answered, after we finished drilling each other with our eyes. By then I was already standing in a closed-off pose, arms folded. "Everything's under control. You can leave us."
They gave us another once-over, saw no deathmatch in progress, and left.
I kept my chakra running through my body, ready to spring at a moment's notice. It was way easier than when I'd first learned the technique, and thanks to all the training I could maintain that state for quite a while.
She shot me a sharp glare.
"And how long are you planning to stand like that?"
"I could ask you the same thing. You're the 'sensei' here, so go on, lay out your program. Since the Hokage couldn't find anyone better, I'll have to work with what I've got."
We silently buried the topic of how we'd address each other, settling on something moderately rude and completely informal.
The old hag let out an offended snort, but didn't start yelling again, slipping back into her original detached tone.
"My strength is not in flashy jutsu or a massive chakra pool like Hiruzen—my teammate. Or… you," the Elder paused, looking at me with obvious displeasure. She clicked her tongue a couple of times at whatever she'd remembered, then went on: "It lies in cold calculation, in the ability to analyze a situation, find an opponent's weaknesses and exploit them with maximum efficiency. Espionage, sabotage, quiet eliminations, survival in any conditions—that is my field. That's what I'll teach you, if you prove you can learn."
She wasn't lying about her type of strength. Calculation, situational analysis and, I assume, living in the shadow of a stronger teammate. I had to admit a certain respect—surviving to her age as a shinobi is not easy. She clearly wasn't lacking in brains.
"The training will be grueling."
I raised a brow.
Was she serious? Or did no one bother to show the Elder my gym results?
"Mistakes are unacceptable. Laziness is punishable," she said, lifting her cane meaningfully. "This stick isn't for support. It's a great tool for beating lessons into thick skulls. Are you ready?"
Now it was my eye's turn to twitch.
"For a spar? Or are we starting with something more basic?"
"Did you read the scrolls on basic stances and combat tactics that Hiruzen gave you?"
I nodded.
"Then we'll move on to practical drills. We'll correct the details as we go."
Without waiting for my answer, she moved in, closing the five meters between us in less than a second.
My leg swung out in a wide arc, aiming to take out the blurred figure.
But Koharu just shifted her center of gravity and stopped short, letting my kick whistle past. She didn't move in, having guessed that I'd use the momentum to send my other leg straight past her face.
At the same time, I formed a seal, realizing I was out of range, planning to release a burst of chakra smoke from my second foot to blind her, while the first foot—about to hit the ground—would dump chakra into the floor, breaking the footing under her, hidden by the smoke, and buying me time to disengage.
But instead of just waiting for both kicks to miss, Utatane didn't hesitate. Bending out of my line of attack, she swung hard and cracked me across the spine with her cane.
I hadn't even landed yet when I went flying four meters to the side—about a sixth of the distance to the wall.
I tucked in midair, came down in a crouch and immediately straightened.
"Damn, that hurt," I muttered, rubbing my back. Koharu clearly didn't pull her punches.
"Pain is the best teacher," she replied evenly. Her cane was back in its starting position, like it had never moved. "You rely too much on brute strength and speed. You forgot about tactics. Your smoke and ground-breaking plan was predictable and took too long to set up. In a real fight, you'd have been killed three times over by now. Again."
I could feel irritation starting to boil. That wasn't a tactic? A tactic that didn't work is still a tactic. Predictable? It was a damn good combo… But there was no time to argue, and my back was still throbbing.
Fine, let's try something else. Speed and surprise.
I lunged forward, using a short Body Flicker to close the distance as much as possible, forming hand seals at the same time and creating a simple Illusory Clone in front of me. The idea was that she'd react to the clone and have to guess where the real hit was coming from. In that gap I'd attack from the side or from below.
The clone rushed in, but Koharu didn't so much as twitch toward it. Her gaze stayed locked on me. The moment I shifted to the side to attack, her cane swung, looking almost lazy. My eyes couldn't follow it anymore when I was almost in reach, but my sphere-vision showed the staff blurring from speed—and then a stab of pain in my left shoulder made my attacking arm jerk and threw off my balance. The cane instantly changed direction and jabbed me under the ribs on the opposite side. I grunted and jumped back, clutching my flank. The clone vanished without a trace.
"Pathetic attempt," Koharu said. "Your clone was unstable; its chakra was fluctuating—a sign of inexperience. You shifted your focus to your real attack way too obviously. Never telegraph your intentions like that. And watch your balance after a Body Flicker—you were vulnerable for a full tenth of a second. That's enough. And where are your eyes looking? Watch the shoulder, not the hand."
More pain, another humiliating breakdown of my mistakes. I clenched my teeth and got ready for the next exchange. This time: not just misdirection, but evasion and a counter.
Judging by how she was talking, she wasn't expecting much from me. Which meant I could play off her condescension and pull something only shinobi with pretty high control could manage.
When she came at me again, cane swinging, I didn't counterattack. I tensed and jumped back, opening the distance.
I pulled part of my focus away from reinforcing my body and formed the seal for Illusory Clones, this time making four.
We rushed her all at once, passing through each other on purpose so the old hag wouldn't know where I was… or rather, so she'd think that was the trick.
Two clones immediately dispersed. One went around behind her while I approached from the front.
Koharu's gaze flicked between us, trying to pick me out, and she found me at the front fairly quickly, ignoring the clone behind her.
Closing in.
I took up a good position to strike, then focused as hard as I could on the clone.
Whack!
The cane struck where the real me had been, passing through the instantly-dispersed illusion.
At the last second I'd managed to pull off a Substitution—Kawarimi—without seals.
I appeared a meter behind the old woman, ready to hit her… but she was already gone.
My eyes didn't catch it, but my sphere-vision clearly showed that the old hag was now behind me, her cane already on a collision course with my head.
I spun sharply and swung my arms up, almost knocking the cane aside as she yanked it back at the last moment…
Too close.
"What reflexes… Not a bad use of Kawarimi." For the first time during the spar, something like approval slipped into her voice, but it immediately dried up again. "But you picked an obvious spot to reappear. The technique itself was unexpected, but the follow‑through was weak. That's only good for scaring snot‑nosed chunin. You wasted precious moments getting ready to attack again. Remember, Uzumaki: every technique is not an end in itself, but a tool. Use it efficiently, or don't use it at all."
I just snorted at that, and we kept going.
We wrapped up the session after only an hour. By then I was hot, pissed off, covered in bruises and still felt like I could go on for hours. The old hag… the Elder, though, was spent. So we agreed to continue the next day.
Part of me had to admit it—this old bag really knew her stuff.
And the training went on in that vein. As far as calling it "grueling" went, she'd really oversold it. That didn't mean it was exactly easy for me, though.
Koharu turned out to be a merciless, nitpicky instructor. The first few days I spent more time dodging her cane—or taking hits to the arms, legs and back—than actually fighting. At least she didn't smack me in the head. Very often.
Every wrong step, every hesitation, every lapse in focus came with a sharp, painful strike and a dry comment on what I'd done wrong. She didn't raise her voice anymore, didn't curse, didn't act like some hysterical granny during spars. Her blows and her cold analysis worked a lot better.
"Too wide a swing, you're leaving a gap in your guard"—jab to the back of the knee. "Your stance is unstable, you're easy to knock down"—crack across the ankle. "You got distracted by a noise. In battle, that's death"—a stinging smack to the back of the head.
She made me drill basic stances, movement and evasions for hours, until they were pure reflex. She taught me not just to block a hit, but to redirect it, to turn the opponent's momentum against them. She showed how one precise, fast move could throw off the balance of, or even disable, an opponent who was stronger than me. We broke down tactics for different situations: cramped rooms, open ground, forest; fighting one enemy or several. For that, Koharu roped in a bunch of ANBU with different fighting styles, plus some chunin and jonin. Utatane forced me to analyze my own and other people's actions, look for weak spots, think several moves ahead. "A shinobi fights not only with his body, but with his head, Uzumaki. The head is what lets a man kill even the scariest monster," she liked to repeat.
On top of straight taijutsu and tactics, the advisor gave me basics in survival, camouflage and stealth. How to move silently. How to use shadows and cover. How to read tracks and how to throw off a pursuer. Koharu explained the principles of sabotage and espionage—how to gather intel, how to slip into guarded facilities, how to set up and disarm traps and alarm seals. We didn't practice silent killing directly, but the old hag went through the theory in detail—vital points on the body, the most effective and quiet ways to take out sentries or targets, how to hide traces… Not footprints—corpses. All of it was given dryly, pragmatically, as just another set of tools for getting a job done.
"Tool" was her favorite word, as I later noticed.
It was painful and humiliating to keep getting whacked with that cane. But… I basically got used to it, even if the irritation from the regular beatings never quite went away. If anything, it just pushed me further. Because, much as I didn't like her methods, I could see the results. Every day I moved faster, more accurately. I started anticipating the old woman's attacks, dodging the cane more and more. My own movements got cleaner, more economical. I started to get why you had to move exactly this way and not that, why this strike was better than another one.
My skill was growing, and growing noticeably faster than during my solo training or even with other instructors. Koharu beat the excess out of me, leaving just lean, lethal efficiency. My anger at the old hag slowly mixed with a grudging but undeniable respect for her experience and knowledge. She wasn't just making me a strong fighter—she was making me into a real killer.
The new lessons with the Elder took a decent chunk of time, but still fit pretty naturally into my life.
At the very start, I did kind of regret that I couldn't keep my ass still and went asking for a new mentor.
More than a year passed, and that regret was gone without a trace.
I'm six years old. It feels like a huge amount of time has passed. But being buried in all this stuff, I barely noticed how fast it all flew by.
The progress was getting more and more obvious; in that time I'd gotten a lot stronger.
My chakra reserves, they said, were already two and a half times what Hiruzen had at his peak. He has way less now—age hit him hard.
On top of that, my control had grown. Way more than the people calculating my growth curve expected. Control isn't supposed to increase that fast, if you believe the formulas. The researchers split into two camps. Some said it was thanks to a ton of practice and persistence, and that technically it was still within the normal range, just at the very top. Others insisted it was some kind of anomaly and I needed to be observed further so they could study it in detail.
My own opinion floated somewhere in between—I wasn't sure. Maybe it was because of my reincarnation… tied to that somehow. On the other hand, nobody really knows what "control potential" actually depends on. So you can't claim anything for sure.
Reserves and control—it was thanks to knowing how to use those two things that I'd gotten so far.
First thing to note, with the regular training under Toraki-sensei's programs, my body had gotten insanely strong. The Hokage just shook his head and said I really ought to meet his student sometime. But she was still wandering who-knows-where, leaving behind a trail of gambling dens stuffed with the money she'd lost them and a string of bars she'd drunk dry.
I saw Roan less and less. That was kind of sad sometimes. He'd taught me a lot, and I didn't really need his guidance anymore to move forward. I had a lot to do, he had a lot to do. In the end, our joint training just… stopped happening.
But no point sulking. Moving on…
In medicine, I'd gone through the whole course and only recently started getting into genomics and body enhancement. Koharu had given me the Shadow Clone Technique, and thanks to that I could chew through huge amounts of information in a short time. That's how I cleared out the hospital library. It cost me, though—a large number of clones put a heavy load on the brain. And unlike my body, my mind wasn't that tough. But under that kind of pressure over time, it definitely got stronger.
By then I could heal my own body. Very quickly, too, though it still didn't compare to a certain Divine Regeneration technique. Although, as Hiruzen—whose student knew that technique—noted, I wasn't that far behind. The main difference was speed: a fracture (which I gave myself, yeah, I'm that kind of masochist) healed in about fifteen seconds, and a deep cut in ten. The catch is, for regeneration like that I have to sit down and focus on the process as much as possible, while Tsunade can use her technique in the middle of a fight. With a crutch, yeah—the Strength of a Hundred Seal, where she stockpiles and releases insane amounts of chakra. Unfortunately, the Hokage didn't know that technique; it belongs to the Senju clan, and the only person from it who has that knowledge is the Tsunade in question. But I've got my own crutch, and it's always with me—the bijuu's chakra.
Sometimes it's funny watching people squirm when I first ask some deliberately dumb question, pretending I don't understand from the textbooks why my chakra feels so aggressive to others, and then just sit back and watch them try to wriggle out of answering. I'm still forbidden from telling anyone I'm a jinchuriki. I don't ask the Hokage about it, either—what if he cancels the ban or tweaks what exactly people are allowed to tell me? That would ruin all my fun.
As for the fact that the bijuu's chakra lets me heal myself much more effectively—that's an obvious plus.
Lately, my training progress has slowed down a lot. I mean, if you don't compare me to other shinobi.
Because of regeneration and heavy loads, my body hit the peak of its current potential pretty fast. For this size, at least. Once I grow up, I'll be several times stronger.
To keep progressing faster and better, after a long talk with my colleagues—as I now call the doctors at the hospital—and a few experiments on corpses (after a couple of trips to the morgue, they stopped bothering me at all), and after crunching the numbers carefully, I started using medical techniques to artificially densify my muscles, bring them up to a slightly higher quality, do the same to my bones, and generally develop the whole organism—respiratory system, circulatory system, all of it—so the body could actually handle that kind of load. But so far, the results of that technique have been questionable.
A technique is not just doing something; it also means "packing certain properties into your chakra."
To strengthen my body, I'd stand in the center of a fuin array the Hokage drew up when he got interested in the idea. The seal itself partially gave my chakra the needed properties, kind of "pushing" my affinity forward and giving me more oomph at the same chakra density. In simple terms, it boosted the technique. By spreading those properties through the chakra circulating all over my body, I was stimulating the organism to develop according to a specific template. The one I'd put together with my colleagues.
But again, the results were so-so. Yeah, something was changing, but my strength stats weren't exactly shooting up.
Staying on medicine: my control was now enough to heal other people too. I didn't reach any great heights in that area, and that kind of healing doesn't even come close to what I can do for my own body. Suppressing the nasty properties of my chakra eats up too much of my CPU load for me to keep pace with the other doctors' growth.
Back to sealing and fuinjutsu. You may congratulate me: in just half a year of practice I became a fuinjutsu master. Meaning I can design my own seals. For now, yeah, they can't compare to Hiruzen's work. But he's the strongest living fuin master in the nearby… world? While with what I've got already, if I lived in some xianxia cultivation world, every old fart proudly calling himself a "master" would be coughing blood.
Hard work and talent—that's what supposedly makes you unreachable.
That saying's actually wrong. They forgot to add "a shitload of time."
Right now I was very reachable. Even if I was progressing fast.
I studied a ton of existing seals. I also kept practicing making my own, but that was going painfully slow. I wanted to make something similar to the medical seal Hiruzen came up with. I just didn't have the skill yet. So for now, all I could do was keep training and stamping out little trinkets at my level.
My long‑term plan was to create something at the intersection of medicine and fuin to analyze genomes. But I'm too weak for that right now. I'll still be too weak in a year… and in three… maybe even in ten… To pull that off, I need to surpass Hiruzen. And I don't even know by how much. Probably not by some crazy huge factor, judging by the indirect results of a few studies I read—but even that will take years.
My development in combat went especially well. My freakish physical stats let me put out enormous power—as well as speed and stamina.
It bugged me that the development of my chakra network had slowed down, along with my body as a whole.
But it felt damn good to realize how strong I'd become when I was beating up yet another ANBU in a spar.
I used to be surprised that some kids became shinobi so early. At eight, five, even three and a half.
That was before one of the hospital doctors explained shinobi potential and its limits to me, of course. Potential gets mastered relatively quickly. With my crazy‑ass training and correspondingly huge potential, it still took a year and a half. Right now, though, the thing that limits my strength the most is my kid body. In an adult one, I'd definitely be Kage‑level. Well, if we're talking pure taijutsu. And that's with my combat experience not being all that big yet.
As it is… I still get my ass kicked by various jonin pretty often. They're just bigger, which makes it hard for me to even reach their heads to hit them. Some of them can still pull off higher combat speed. Overall speed, not just sprinting, for example. With their huge experience, older shinobi orient themselves in a fight more easily and faster, and can beat me off that alone. I've got great physical power, but using it properly—that's still an issue.
There's also the problem of time—I just haven't spent enough years in this body. Shinobi use chakra for years, they get used to it. And over a longer life they simply end up controlling their bodies way better.
Me, my unaccustomed brain has to work a lot harder to get the same results—results that will come much, much easier with time, even if I just lie on a couch and move once in a while over the next five–ten years.
On top of that, affinity strengthens over time too…
In short, I just need to get older.
But whatever, no point whining. It's just more motivation to keep moving forward. And if I manage to maintain this pace, I'll only be stronger by then. I'm already happy that thanks to Koharu's pretty average potential, I've almost completely stopped getting whacked across the spine with her cane.
Back to the present.
Morning.
I was bored again… Yeah, looks like I really don't learn from my mistakes. Guess I wanted to get hit again. In the head, for example.
Because right then I was on my way to the Hokage's residence so he could give me something interesting to do. I wanted to go on a mission.
I'd even come up with a solid excuse, in my opinion. Koharu says I don't measure up to a real shinobi (a "normal" shinobi by her standards is something like an elite jonin with ten years of experience, who's been through one or two wars and has a decent talent in their field). In every spar, both me and my opponent have to hold back so we don't kill each other.
And that's true. With every fight I notice more and more moments where if I turned my arm just a bit more, I'd knock my partner's head clean off; if I grabbed an opponent who overextended, I'd feel flesh tearing under my fingers; if my palm with the "adhesion" property I use to run on trees touched their body, my powerful chakra would turn their scrawny frame into bloody mush.
For better or worse, I haven't experienced anything like that yet. To my detriment, according to the Elder. Because "only in a real battle do you temper hot blood," or something along those lines.
It was… still pretty creepy, if you ask me. But I think I can handle it. Especially thanks to my time working with corpses in the hospital. Every drop of strength matters to me. Well, more or less. By avoiding that kind of fight, I figure I'm cutting away way more than just one "drop" of strength.
And anyway, you have to start small.
It's not like they'd send me out to eliminate, say… the Mizukage as my very first mission, right? Doubt it. But I was hoping to squeeze at least a C‑rank out of him.
With those thoughts in mind, I walked into the Hokage's residence.
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