Medical Ninjutsu

For the next few days, the Third Hokage did not use the Telescopic Technique to observe Yamanaka Tohru. Tohru's earlier performance had earned his approval.

Yamanaka Tohru spent a week immersed in the library. In that time, he finished all the books related to Medical Ninjutsu in the Konoha Library and gained a basic understanding of the medical system in the world of Naruto.

Medical Ninjutsu in the world of Naruto allowed Medical Ninja to use special chakra to repair cells that could be repaired, stimulate cell division and regeneration to replenish cells that could not be repaired, and thus make a wounded person's injuries heal quickly.

Medical Ninjutsu also had shape transformation. Through shape transformation, its nature could be altered to produce offensive effects, such as the Chakra Scalpel.

As for nature transformation in Medical Ninjutsu, among the techniques that had appeared in the original story, there were currently only Tsunade's Creation Rebirth and Grandma Chiyo's Kishō Tensei.

As for the First Hokage, Hashirama Senju's rapid recovery and wound healing, Yamanaka Tohru believed that they had already gone beyond the scope of Medical Ninjutsu. They were manifestations of an ultimate Yang Release Sage Body.

However, it could not be denied that Hashirama Senju's rapid healing had laid the foundation for the development of Medical Ninjutsu. Not everyone could possess a Sage Body, but Healing Technique and Mystical Palm Technique, which could be learned through shape transformation, could be widely promoted.

Thus, later generations learned that Hashirama Senju's rapid wound healing was achieved by accelerating cell division. They then used chakra to repair cells, accelerate cell division, and replenish the cells missing from wounds. Sure enough, patients' wounds healed rapidly.

But even Hashirama Senju's rapid healing was not without limits. The number of times a person's cells could divide in a lifetime was finite.

In the early days of Konoha's founding, Hashirama Senju and Madara Uchiha fought at the Valley of the End. Hashirama Senju killed Madara Uchiha. If not for Izanagi, Madara Uchiha would have truly died. Judging only by the result at the time, Hashirama Senju had won.

Yet it had been a pyrrhic victory. Setting aside the fact that this had been Madara Uchiha's scheme, after the battle at the Valley of the End, Hashirama Senju also died soon afterward. Yamanaka Tohru guessed that the cause of Hashirama Senju's death was the excessive number of cell divisions during his battle with Madara Uchiha. Even an ultimate Sage Body could not withstand such enormous consumption.

In Yamanaka Tohru's view, Medical Ninjutsu developed on the foundation of Hashirama Senju accelerating cell division had been imperfect from the start. Even Hashirama Senju, who possessed a Yang Release Sage Body, could not make his cells divide indefinitely, much less ordinary ninja.

When the Five Kage fought Madara Uchiha in the original story, Tsunade released the Yin Seal and used the chakra she had accumulated to continuously stimulate her cells. Activating the forbidden technique [Ninja Art: Creation Rebirth: Hundred Healings Technique], she barely achieved the rapid healing Hashirama Senju had once possessed.

After Tsunade's technique ended, not only would the chakra of the Hundred Healings Technique be exhausted, but her lifespan would also be shortened. The reason for this reduction in lifespan was the constant cell division caused by using Creation Rebirth.

Compared to the medicine of Yamanaka Tohru's previous life, Medical Ninjutsu in Naruto produced immediate results. Whether the treatment process or the outcome, it could be described as simple and brutal. Yet its greatest flaw was that the patient had to trade their own lifespan for the healing of their wounds.

After a week, Yamanaka Tohru had formed a clear understanding of Naruto's medical system. Naturally, it was time to learn Medical Ninjutsu.

The foundation for learning Medical Ninjutsu was chakra control. The Yamanaka Clan's secret techniques specialized in enhancing and controlling spiritual energy. With powerful and controllable spiritual energy, one's chakra control would naturally be excellent as well. This was also one reason Tsunade had taken a liking to Ino Yamanaka in the anime and taught her Medical Ninjutsu.

Yamanaka Tohru had lived two lives, and he had cultivated the Yamanaka Clan's secret techniques since childhood. His spiritual energy was outstanding even within the clan.

After dinner, Yamanaka Tohru told Yamanaka Seiko that he wanted to learn Medical Ninjutsu.

Yamanaka Seiko had not been particularly strong in combat during her days as a ninja, but she had become a Special Jonin of Konoha through her exceptional Medical Ninjutsu.

Yamanaka Seiko was one of the few Medical Ninja in Konoha Hospital who could use [Mystical Palm Technique]. Tsunade had Senju Clan blood and an enormous chakra reserve, so the healing effects of her Medical Ninjutsu were much stronger than Yamanaka Seiko's. However, in terms of their medical knowledge, the two were not far apart.

Yamanaka Seiko began teaching Yamanaka Tohru Medical Ninjutsu from the basic [Healing Technique].

Yamanaka Seiko had not expected her son's talent to be so terrifying. In just three days, Yamanaka Tohru had mastered the foundational Medical Ninja technique, [Healing Technique]. As she watched her son use [Healing Technique] to make a fish on the verge of death lively and vigorous again, she found that his proficiency was nearly comparable to that of an ordinary doctor at Konoha Hospital.

Over those three days, Yamanaka Tohru had repeatedly practiced [Healing Technique] more than sixteen hundred times. His talent for ninjutsu was actually average, but his chakra control was exceptional, and diligence made up for his shortcomings. Aside from eating and sleeping, he had spent the past three days practicing [Healing Technique], and he could finally use this foundational Medical Ninja technique proficiently.

[Healing Technique] was actually like the five basic attributes of wind, lightning, earth, water, and fire. One needed a wind attribute to learn wind-style ninjutsu, while learning [Healing Technique] was like gaining the attribute of a Medical Ninja.

"Now that you've learned [Healing Technique], the next step is to add shape transformation to it. Whether it's [Mystical Palm Technique] or Chakra Scalpel, both are techniques created through the shape transformation of [Healing Technique]. Tohru, I'll teach you Mystical Palm Technique first." Yamanaka Seiko explained [Mystical Palm Technique] to Yamanaka Tohru in detail.

Training in [Mystical Palm Technique] was not as simple as [Healing Technique]. After more than a month, Yamanaka Tohru still had not even begun to grasp it. Adding shape transformation on top of an existing ninjutsu was no easy task. In the original story, Namikaze Minato had taken three years to complete the Rasengan. Even so, Yamanaka Tohru was becoming somewhat impatient, repeatedly attempting to transform the shape of [Healing Technique].

Since he could not make any progress with [Mystical Palm Technique], Yamanaka Tohru could only search the original story for inspiration. He recalled Naruto adding wind nature transformation to the Rasengan, so he began adding the sharpness of wind to [Healing Technique]. Yamanaka Tohru did not possess wind-attribute chakra, but he could simulate that feeling of sharpness. As chakra flowed into [Healing Technique], it transformed into a scalpel condensed from chakra.

"So that's how it is!"

What kind of shape transformation was added to [Healing Technique] depended on what kind of sensation the caster infused into the chakra.

Yamanaka Tohru infused [Healing Technique] with chakra that felt gentle and warm, like warm water. [Healing Technique] gradually became [Mystical Palm Technique]. After more than a month of training, he had finally succeeded!

"Very good, Tohru. All that remains is to accumulate experience. I have nothing more to teach you."

"Mm."

After nearly two months of effort, Yamanaka Tohru had mastered [Healing Technique], [Mystical Palm Technique], and Chakra Scalpel among Medical Ninjutsu. Combined with his five years of surgical experience from his previous life, Yamanaka Tohru was confident that, in terms of Medical Ninjutsu, he was now very close to Tsunade from the original story.

Early the next morning, Yamanaka Tohru decided to visit the Ninja Academy for the first time in a while.

Once a Shadow Clone was released, its memories and experiences would be fully shared with the original body. In Yamanaka Tohru's memories, he had gotten along very well with Kakashi, Obito, and Haruno Rin. The love triangle from the original story was still a love triangle, except now he had been added as a huge third wheel. These three had also become some of Yamanaka Tohru's few friends.

Thinking of the three of them, Yamanaka Tohru suddenly found himself looking forward to the Ninja Academy.