Kage Bunshin no Jutsu (Shadow Clone Technique): Dozens of clones of myself appeared. The audience, composed of my family, had complex emotions. The children were amazed, while Daichi and my mother, judging by their reactions, found it quite normal. After all, Bunshin no Jutsu (Clone Techniques) are very common; they are one of the basic abilities of every Shinobi.
That was until my clones touched each other one by one at the same time, and they realized that my clones could touch and be touched. Everyone’s expressions immediately changed to amazement.
— Nii-san, a-a-and you were the one who created this technique? — Daichi asked with shining eyes.
I nodded with a smile on my lips. My clones smiled just like I did.
— This technique is not as simple as it appears. It is much more complex. Watch carefully, and I’ll show you.
— It doesn’t only affect people, but also objects and Jutsu. Observe.
I took a shuriken, infused it with my chakra, and threw it. While it was still in the air, I activated the technique.
Kage Bunshin no Jutsu.
The single shuriken split apart and transformed into dozens. I sent more chakra into it, and then hundreds appeared. They struck the target, and every single shuriken caused damage where it landed, proving that they had truly manifested physically, unlike the fake clones from the old basic technique.
The admiration deepened when everyone present realized this fact. The pride in my mother’s eyes was obvious, the love in Hikari’s eyes was clear, and the children looked at me with admiration.
— And it doesn’t end here.
I pulled HAKUTSUKI from my space and then threw it.
Hikari no Kenki (Light Sword Aura).
The sword released a light-based ki, and then I activated the seal.
Kage Bunshin no Jutsu.
The blade of light multiplied, increasing the crowd’s excitement even further. I smiled in relief, remembering that I had practiced beforehand in the space.
When I trained in the space, I practiced Kage Bunshin no Jutsu and the Rasengan (Spiral Sphere). Due to the high chakra density of that place, which makes training easier and improves insights, I mastered Kage Bunshin no Jutsu in two days.
Two days because I already knew what I wanted to do and how to do it.
Before I transmigrated here, both I and many other people believed that creating a jutsu consisted only of combining a sequence of hand seals and pouring chakra into it.
That idea was completely wrong.
Hand seals were never the true jutsu.
They are only a language.
A way to guide chakra so that it follows a specific path.
If simply copying hand seals was enough, any Genin could create Rank S techniques just by watching a Jōnin for a few minutes.
Creating a jutsu is much more complicated.
After spending some time here, I learned that a jutsu is born from four pillars.
The first is the concept.
Before moving even a single drop of chakra, I need to know exactly what I intend to create.
Chakra does not possess intelligence of its own. It responds to the user’s will.
If I don’t even know the result I am seeking, how could my chakra possibly achieve it?
The second pillar is chakra circulation.
This is the true secret.
Every technique requires chakra to travel through the body in a specific way before being released. The hand seals only help reproduce that pathway.
Two ninjas can perform exactly the same hand seals. If one of them circulates their chakra differently, the result will also be different.
That is why copying a technique does not mean mastering it.
The third pillar is intention.
Chakra responds to will.
While molding a jutsu, I need to maintain the same image from beginning to end. If my concentration falters for even a moment, the entire structure created by chakra loses stability.
The fourth pillar is the amount and control of chakra.
Even if I perfectly understand the theory, if I do not possess enough chakra or cannot control it with precision, the technique will simply fail.
And when a jutsu fails?
It depends on the type of technique.
Most of the time, the chakra disperses before taking form.
Other times, the structure becomes unstable and collapses immediately.
In the most dangerous cases, chakra conflicts with itself, causing an explosion, chakra backlash, or damage to the user’s own tenketsu. The more powerful the jutsu, the greater the risk.
That was exactly how I imagined the creation of the Rasengan.
Minato did not wake up one day knowing how to use it.
First, he had an idea.
By observing the Bijū Bomb, he realized it was possible to produce devastating power only through chakra manipulation, without relying on elemental nature.
From there, he began experimenting.
In the first attempt, he managed to make the chakra rotate.
But the sphere fell apart.
In the second, he managed to increase the rotation speed.
The chakra became more powerful, but also more unstable.
Then he tried compressing it.
The sphere exploded before stabilizing.
Each failure showed him a different mistake.
For around three years, he repeated the same process, constantly changing the rotation direction, pressure, density, and chakra flow until he found the only possible balance.
That was how the Rasengan was born.
Kage Bunshin followed a similar logic.
Someone wondered if it was possible to create a true clone instead of a simple illusion.
The first difficulty was discovering how to divide chakra without destroying its stability.
Too little chakra made the clone disappear immediately.
Uneven chakra distribution caused one clone to survive while another collapsed.
Too much chakra exhausted the user.
After countless attempts, they found a way to divide chakra in a perfectly balanced manner, allowing each clone to possess its own physical body.
Even so, the technique remained forbidden.
Not because it was impossible to learn.
But because a single mistake in chakra division could leave the user completely exhausted or even cause fatal damage.
That was why Naruto was able to learn it.
He saw the concept of the technique in the Scroll of Seals and understood the objective it was meant to achieve. However, understanding the concept did not mean mastering it immediately. Several attempts were required before he could properly reproduce the chakra circulation.
The difference was that Naruto possessed monstrous chakra reserves, something that allowed him to fail repeatedly without dying from exhaustion.
That was when I realized a simple truth.
No great jutsu is born from talent.
It is born from an idea, hundreds of failures, and the determination to keep trying until chakra finally responds exactly to the creator’s intention.
Based on this observation, and with the help of the space that improves my ability to gain insights, combined with the fact that I know what I want to do and how to do it, copying... cough, creating these two techniques was easy.
It was just a little time-consuming.
After all, Kage Bunshin no Jutsu took two days, and the Rasengan will take around three more days because now that I have combined it with Kage Bunshin no Jutsu, I have been trying Naruto’s method, using two clones to help with chakra rotation.
Now, combined with my chakra nature, the four elements — wind, water, earth, and lightning — I will have more Rasengan options.
After all, the Rasengan is a pure chakra rotation technique. When Naruto added wind, it became Fūton: Rasenshuriken.
Now, if I add earth, will it become like the one Naruto used when he removed Shukaku during the fight against Madara?
What if I combine two elements?
The most interesting thing about these techniques is that they do not require hand seals.
The Rasengan should be an SSS-Rank technique.
Just like Kage Bunshin no Jutsu is a powerful technique, but in the hands of the right person, it becomes a nuclear weapon.
Imagine me, someone with a Kekkei Genkai who does not even need hand seals to activate it, an army of my clones, each one using our Kekkei Genkai, not to mention that I possess enormous chakra reserves (courtesy of my Uzumaki lineage) and I have the space that gives me spiritual water capable of restoring my chakra and healing wounds.
Honestly, I should be nerfed for the sake of this story.
Speaking of Kekkei Genkai, if ordinary jutsu require years of study, Kekkei Genkai belong to a completely different category.
Both I and many others believed that a Kekkei Genkai was simply a more powerful jutsu.
It is not.
A Kekkei Genkai is an ability engraved into the body itself. It is written into the chakra of its user from birth.
That is precisely why they are so coveted.
An ordinary ninja could spend their entire life trying to combine two chakra natures and never produce even a single drop of Gravity.
However, a member of the Tsukishiro clan can do it almost instinctively.
Not because they train harder, but because their body was created for it.
The same applies to the Senju’s Wood Release, Lava Release, Magnet Release, Boil Release, and many other advanced bloodlines.
Most ninjas need to transform chakra step by step.
A Kekkei Genkai user does not.
Their chakra system was born prepared to produce that transformation.
It is like comparing a craftsman who forges a sword by hand with someone who was born holding a perfect sword.
Both can learn how to fight.
But one of them starts far ahead.
That was when I understood something else.
Hand seals never created a jutsu.
They only help the user mold chakra.
The better the control, the less dependent they become on hand seals.
That is why so many Kekkei Genkai users can launch techniques almost instantly.
The chakra already knows the form it must take.
The body already knows the path.
In many cases, only a small intention is needed for the technique to happen.
That does not mean all Kekkei Genkai completely eliminate the need for hand seals.
Some still use them to increase precision, reduce chakra consumption, or stabilize more complex techniques.
But the necessity is much lower than with ordinary jutsu.
That was when I understood why the great nations fought entire wars because of clans with Kekkei Genkai.
That is also why Uzu no Kuni was destroyed, and why both the Senju and Uchiha clans would later become extinct.
We did not inherit only techniques.
We inherited centuries of evolution concentrated into a single bloodline.
Every child born with a Kekkei Genkai represented a power that no amount of training, no matter how intense, could completely reproduce.
It was precisely this value that turned many clans like ours into targets of persecution, experiments, and massacres.
Not because we were numerous.
But because a single bearer could change the outcome of an entire war.