The Sharingan’s “copying” ability, to put it plainly, is a “synchronization” built upon the premise that the user’s own hardware meets the requirements.
Just like in the original story, when Sasuke used his Sharingan to copy Rock Lee’s Taijutsu, but when he tried to use it himself, his physical conditioning couldn’t keep up, resulting in a poor imitation known as the “Lion Combo”.
Even the famous Copy Ninja Kakashi, despite seeing through the principles of the Rasengan with his Sharingan, couldn’t integrate his proficient Lightning or Wind Nature Transformation, forcing him to give up and develop Chidori instead.
Physical conditioning, Chakra natures, and mastery over Chakra shape and nature transformations—these hardware conditions are the true prerequisites for a successful Sharingan copy.
Otherwise, with the Uchiha Clan running rampant during the Sengoku period and the Ninja World Wars for so many years, why wasn’t there a single powerhouse famous for “copying”?
Instead, they relied entirely on Fire Release and Genjutsu to conquer, ultimately letting an outsider like Kakashi take the title of “Copy Ninja” for cheap.
Kakashi could be called the Copy Ninja because he was a ruthless Taijutsu practitioner since childhood, becoming a Jonin at age twelve, with his physical conditioning already maxed out.
Even more absurdly, Kakashi possesses all five elemental Chakra natures—Wind, Lightning, Water, Fire, and Earth—along with Yin and Yang!
This is his true capital for copying over a thousand Ninjutsu!
Rinya’s current situation was rather awkward.
Although he had memorized and stolen Takagi’s sword techniques using his Sharingan, without a strong physique to support it or Lightning Chakra to infuse it, the power would be greatly reduced in a real fight.
Fortunately, Rinya had a system cheat!
He didn’t need to train miserably; as long as he killed more enemies, looted more corpses, and obtained enough Constitution points, he could turn into a human dinosaur in minutes!
Senju Ken looked at Rinya’s slightly dazed expression, thinking the kid was awed by his Wind Release and silently reflecting on it, so he didn’t think much of it.
“Alright, go back and practice this Gale Palm slowly. I’ll teach you another C-rank Wind Release with greater lethality.”
Senju Ken spoke casually, not intending to ask for Rinya’s opinion at all, his hands flying as he began forming hand signs again.
“Wind Style: Wind Cutter Technique!”
Hearing this name, Rinya instantly perked up.
The crimson double tomoe spun frantically in his eyes, staring intently at every subtle movement of Senju Ken’s fingers.
The moment the hand signs were completed.
There was no sound, nor any violent airflow.
A thick tree trunk dozens of meters away was suddenly sliced in half without any warning!
The cut was as smooth as a mirror.
Rinya was practically bursting with joy.
Wind Cutter Technique!
This was the ultimate assassination technique he had been longing for when watching anime in his past life!
Invisible, shadowless, and silent—killing without a trace!
It was absolutely perfect for sneak attacks.
Although the base power of this technique was only C-rank, if his Chakra reserves increased in the future and he enhanced it slightly with the system’s ‘Mutational Strengthening’, its power would definitely be even more terrifying than Naruto’s Wind Release: Rasenshuriken!
And it was far more stealthy, making it impossible to guard against.
“The principle of this Wind Cutter is very simple. It’s about compressing Wind Chakra to the limit to form a sharp, invisible blade for cutting. As long as you have enough Chakra, releasing several wind blades at once is not a problem.”
“Alright, practice here by yourself. I’ll head off to do some work.”
Senju Ken gave a brief explanation, patted his pants, and left.
He felt that taking the time to teach two C-rank Ninjutsu was already doing justice to the kid’s military merits.
As the squad leader, he still had a mountain of intelligence to process.
Looking at Senju Ken’s departing back, Rinya understood everything clearly.
Although the teaching process was straightforward, he keenly sensed the deep-seated aloofness and perfunctoriness in Senju Ken’s attitude.
It seemed he had still thought of the relationship between the Senju and Uchiha too simply.
This kind of deep-rooted family feud could not be resolved by a few flattering words.
But Rinya didn’t take it to heart, focusing entirely on practicing the two Wind Release techniques he had just acquired.
Might makes right.
As long as his strength reached the level of Uchiha Madara or the Six Paths Sage, who would care about what the Senju Clan thought?
Back then, didn’t Senju Hashirama rely on absolute force to beat Uchiha Madara and the entire Uchiha Clan into submission before establishing Konoha Village?
The tables will turn.
Once my strength is sufficient, I’ll let my power do the talking!
When the time comes, even if I have to use force, I’ll make Tsunade obediently cooperate to complete the system’s child-bearing task!
Of course, that was for later.
If one can fall in love and get married properly, who would want to use force?
After all, Tsunade’s fiery temper was just as astonishing as her bust size.
Going head-to-head probably wouldn’t end well, so it was safer to take a gentler approach first.
Time flew by in the tedious practice of forming hand signs.
…
“Tiger-Hare-Dog-Ram-Dragon! Wind Style: Wind Cutter Technique!”
Rinya’s hands formed signs so fast they left afterimages as he gave a low shout.
On a towering tree not far away, a thick branch snapped without warning and fell straight down from midair.
Seeing this, Rinya did not pause for a second, his hand signs instantly shifting.
“Wind Release: Gale Palm!”
Rinya thrust his palms forward fiercely, and the airflow transformed into a visible gale, sweeping out with a howl.
The gale accurately struck the falling branch, sending it swirling back up into the high air before it tumbled a few times and crashed heavily into the mud.
“Phew…”
Rinya exhaled a long breath of turbid air and wiped the fine sweat from his forehead.
It seemed he had preliminarily mastered this technique.
Next was the slow, grind-like work of continuously practicing his hand sign speed.
Forming hand signs was truly a hassle.
Life-and-death battles often happen in an instant; if you’re a second too slow in forming signs, your head might get chopped off.
If only he could be like the First Hokage, Senju Hashirama, clapping his hands together and getting whatever he called out—that would be truly invincible!
Rinya glanced at the blood-red setting sun on the horizon, brushed the fallen leaves off his body, and turned to walk towards the outpost camp.
Inside the temporary outpost, the light of the campfire flickered in the forest’s night wind.
Takagi was squatting in front of a tent, nimbly taking stock of a pile of Ninja tools.
Kunai, Shuriken, and Paper Bombs were piled up in a small hill of miscellaneous items.
These were all spoils of war looted from the corpses of the Iwa Ninjas.
A Ninja is essentially a precise killing machine.
Sustaining war through war, plundering the enemy’s resources to strengthen oneself, was the most basic law of survival on the battlefield.
“Rinya, you’re back? How is your Ninjutsu practice going?”
Takagi was wiping a blood-stained short sword with a rag.
Looking up, he saw a tired-looking Rinya walking over and asked casually.
“I’ve preliminarily mastered it, but I still need to practice.”
Rinya sat down by the campfire.
Looking at the equipment scattered all over the ground, his eyes lit up.
“Captain, are we dividing the loot?”
“What do you mean dividing the loot? That sounds terrible. These are the spoils allocated to us by Captain Senju.”
Takagi sheathed the clean short sword back into his waist and explained.
“In this breakout, our squad lost two brothers. To increase our chances of survival in the future, Captain Senju specially allocated us some extra supplies. Pick whatever you can use and take it all.”
Hearing this, Rinya naturally wouldn’t stand on ceremony.
He was about to start struggling on the battlefield, and no one would complain about having too many life-saving items.
He squatted down and began picking through the pile of equipment, casually stuffing a few Paper Bombs into his Ninja Tool Pouch.
Just as Rinya and Takagi were distributing the spoils, a crisis was quietly approaching in the dark forest a few kilometers outside the outpost.