"It's done!"
The newly fused chakra can now be preserved and controlled by the shadow clone.
Uchiha Kiyo carefully sensed the changes and confirmed that the newly generated mental energy in the clone was no different from his own.
However, since the physical energy was extracted from different bodies, the newly generated chakra differed from the chakra of his main body. Compared to his previous clones, the chakra in his main body had slightly altered after running the cloned body. The difference between the newly fused chakra and his original chakra was significant.
"This way, my chakra signature won't arouse suspicion, right?"
Even though there had been a slight difference in the chakra of his previous clone, it still caused Uchiha Kiyo some trouble. Danzo had been somewhat wary of him because of this.
If such a thing happened again, and the chakra signature of the clone closely resembled his own, it would undoubtedly raise suspicion.
Fortunately, the newly fused chakra had a distinct aura, solving this issue.
"Still, the difference in chakra might become inconvenient to manage. I need a way to categorize them."
In the end, Uchiha Kiyo decided to refer to the chakra of his main body as primary chakra and the chakra of his shadow clone as secondary chakra. The chakra fused within the shadow clone would also be categorized as secondary chakra.
It was a simple and effective distinction.
The ape-like beasts he had used for testing were not human and had very different meridian structures. Ninjutsu couldn't be properly tested on them, meaning their role in the experiment was now over. Uchiha Kiyo dispelled the shadow clone and took some time to remove the sealing techniques embedded in the clone's body.
"It's time to consider finding a human ninja body. I still need to understand the full effects of my improved clone technique."
After disposing of the ape's remains, Uchiha Kiyo began contemplating the next steps for creating a true clone.
Unfortunately, being within Konoha meant that obtaining a corpse was nearly impossible.
"I should have thought about keeping a few bodies from the battlefield earlier."
Uchiha Kiyo sighed, realizing his oversight.
Then again, even if he had saved corpses, they might not have been useful.
Before he improved his cloning technique, a regular corpse might have sufficed. However, if he wanted to create a clone that could cultivate chakra independently, the body would need to retain basic biological activity and function properly. A recently deceased corpse would be ideal.
A preserved corpse that had been stored for too long would no longer function as needed. Perhaps if it were submerged in the nutrient solution used in Orochimaru's experiments, it could maintain its activity—but that was too extravagant.
Nutrient solution was valuable. It wasn't absurdly expensive, but even with Kiyo's wealth, using it for a corpse would be excessive.
Moreover, the effectiveness of the current nutrient solution was uncertain.
After all, Kiyo had no idea how Orochimaru sourced his nutrient solution—whether he bought it or synthesized it himself.
"Where can I find a usable body?"
After exhausting all possibilities, Uchiha Kiyo finally gave up on the idea.
His only option was to pass the cloning method to his Rain Country clone and have that version of himself attempt it instead.
It was a gamble.
He initially didn't want to use the Rain Country clone for this experiment because he wasn't certain how much mental energy the process would consume.
What if the chakra within the clone wasn't sufficient to decompose?
Or worse—if he successfully decomposed it, but the remaining chakra wasn't enough to preserve and store the extracted mental energy?
With no other choice, Uchiha Kiyo had to let the Rain Country clone attempt it.
The sooner he understood the results, the better.
Kiyo had a strong premonition that this secret cloning technique would surpass his expectations.
That feeling alone made him eager to test its effects as soon as possible.
For the next two days, Uchiha Kiyo refrained from further research, choosing to rest whenever he returned home at night.
Perfecting the clone secret technique had consumed an enormous amount of mental energy, nearly overwhelming him. He needed proper rest—otherwise, what would he do if his brilliant mind burned out?
---
Meanwhile, the Rain Country clone, having received the improved cloning technique from the main body, immediately found a secure location to begin testing.
At this point, the so-called primary chakra remaining in the clone was barely over a thousand units—it wouldn't last long. The clone had been waiting for the main body to return to the battlefield to "recharge" him.
First, he constructed a framework in the body to extract physical energy. Then, bit by bit, he decomposed chakra to refine mental energy while constantly training.
After breaking down about one-third of the primary chakra, the continuous exercise finally produced a trace of mental energy. The clone immediately manipulated it, combining it with physical energy to refine secondary chakra.
"Whew… Thankfully, there's still some left."
Now, the clone was solely relying on secondary chakra to control his body, allowing it to sustain itself indefinitely.
Once the secondary chakra reached approximately 500 units, the refining process slowed to a negligible pace.
"500 units—equivalent to an elite Chunin. Not bad."
Upon closer inspection, the clone roughly calculated its "lifespan."
From now on, daily energy consumption would be sustained by secondary chakra. The primary chakra would only experience minor losses due to control functions and chakra flow stimulation.
At this rate, it would take around three months for the primary chakra to be fully depleted!
Initially, the clone wouldn't have lasted more than half a month. But now, with this extended longevity, it could continue functioning normally for far longer.
The improved cloning technique truly lived up to its name.
This was a real clone.
With his chakra reserves replenished, the clone no longer hesitated and began testing ninjutsu.
However, he soon ran into an awkward realization.
After all this time, he had never actually tested his chakra attributes.
A mistake.
Instead of using elemental jutsu, he decided to try a non-elemental technique first.
Without attributes, the first technique that came to mind was—
The Shadow Clone Jutsu.
Wait…
Can I actually make a clone of myself?
Inside the sealed space, the shadow clone's expression turned strange.
"…Should I try it?"
After a brief hesitation, the clone made a hand seal.
"Shadow Clone Jutsu!"
Boom!
A second shadow clone appeared next to him.
!!
The clone could actually use the Shadow Clone Jutsu!
Is this a bug?!
Could a clone actually create another shadow clone as a plug-in?
If the main body created more clones and they could all replicate themselves…
Wouldn't this be broken?!
Excited, the shadow clone nearly dissipated on the spot.
Quickly regaining his composure, he began studying the new clone beside him—
Or rather, what should be called a secondary shadow clone.
This secondary shadow clone was created from the secondary chakra within the existing shadow clone. It did not share memories with the main body but retained the experiences of the first shadow clone.
"…Should I try dispelling it to see if the memory returns?"
The clone made a hand seal and dismissed the secondary shadow clone.
The clone vanished into smoke.
A surge of memories flooded back, impacting the first shadow clone.
"The memories transferred back, but the impact is too strong. With my current primary chakra, I can only handle the memory influx from one shadow clone at a time.
If I create too many, the shockwave of returning memories will overwhelm me, forcing me to dissipate."
Additionally, he noticed that after absorbing the memories, his total memory load had already exceeded that of a standard shadow clone, imposing natural limitations.
After further testing with the Transformation and Body Flicker techniques, the clone fully grasped its capabilities.
He transmitted all findings to the main body before beginning the recovery process.
---
Konoha.
After receiving the information, Uchiha Kiyo was thrilled.
The fact that a clone could use Shadow Clone Jutsu to train itself was groundbreaking.
As long as he managed the memory impact properly, this could revolutionize his training.
With even more possibilities to explore, Uchiha Kiyo became even more eager to create the perfect clone.
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