However, this world was different.
Here, there was no such thing as Mystic Energy like the one Reiji had used before.
Instead, there was Chakra—a more complex source of energy with much stricter limitations compared to the energy Reiji had used in his previous world.
When he first reincarnated into this world as a member of the Uzumaki Clan, Reiji quickly realized that the techniques he had mastered before needed to be adapted to work with a different energy system.
There were no shortcuts.
Fuinjutsu: Age Reversal Seal was the result of Reiji's hard work over the years.
However, this technique came at a very high price.
Reiji developed this technique not without reason.
He wanted Mito Uzumaki to remain alive, to stay strong, and most importantly, to be there to protect Kushina.
Reiji knew that this world was cruel.
If Mito were to go, then Kushina would be left alone as the only member of the Uzumaki Clan in Konoha, without a strong enough protector to keep her safe from the dangers lurking in Konoha.
So, Reiji made a decision.
By sacrificing a significant portion of his life energy, Reiji activated the Fuinjutsu—and the results were now before him.
Mito Uzumaki, who should have been over seventy years old, now appeared as a young woman in her early twenties.
Mito's skin, which had begun to show signs of aging, was now smooth and firm again.
Mito's hair, which had started to fade, now shone with its natural red color.
Mito had truly returned to her youth.
However, all of this did not come without consequences.
Reiji had sacrificed fifty years of his own life energy to achieve this.
Originally, Reiji had about a hundred years of life energy—something normal for any living being—but now only forty years remained.
That meant, if nothing changed, Reiji would only live until the age of fifty before finally dying.
However, even though the situation seemed dire, Reiji did not show any panic.
Reiji had considered all of this from the beginning.
There was a way to extend Reiji's life energy, and he would find it.
This world might be different from Reiji's previous one, but that did not mean he could not control his own fate.
Reiji took a deep breath and then turned his gaze back to Mito, who was still looking at him with a meaningful expression.
"Thank you, Reiji," the woman finally said, her voice full of sincerity.
Reiji smiled slightly.
"Don't thank me just yet," Reiji said casually. "I still don't know if this really works without side effects."
Mito just smiled but did not say anything more.
In her heart, Mito knew that the young man in front of her had made a tremendous sacrifice—and she would never forget that.
Outside, the wind blew gently, rustling the leaves of the trees surrounding their home.
The dark night sky seemed filled with stars, as if watching over the events that had just transpired.
This was not the end.
It was merely the beginning of a much longer journey.
...
...
...
Fuinjutsu: Age Reversal Seal is a high-level sealing technique that transcends the natural limits of life.
It allows the user to reverse someone's age by accelerating cellular regeneration and erasing the traces of aging embedded in the body.
However, the price to be paid is very high.
This technique relies on the balance between Chakra and Natural Energy, two opposing forces—one controlled by human will, which is Chakra.
While the other is a wild force that can only be tamed with extreme precision, which is Natural Energy.
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[Announcement: A New Novel Has Been Added!
The Puppet Maker in the World of Naruto
A man who is a scientist, researcher, and expert mechanic in robotics dies in a massive explosion that occurs in his laboratory while developing an advanced robot project. However, instead of experiencing death as he thought, the man awakens in another world—a strange place with vast stretches of desert.
There, the man is surrounded by people who can jump high, calling themselves ninjas. The confusion he initially felt grows as he realizes that this world is not unfamiliar to him. This is the world of Naruto! However, there is one thing that surprises him.
"Isn't this Sunagakure? Why am I not in Konoha? This poorest village... Oh my God, this is serious!"
Now, in the midst of a new life filled with danger and uncertainty, the scientist must find a way to survive in Sunagakure, a harsh place full of limitations. With his robotic knowledge, can the man change his fate in this ninja world, or will he fall along with the village?]
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