Kimura Takuya's Ninjutsu Research Notes

"Notify Baku. Take the target down as soon as possible and bring him to the interrogation room."

The Third Hokage specifically reminded him, "Remember, don't make too much of a commotion."

Anbu Yoru nodded in acknowledgment, then used the Body Flicker Jutsu to leave.

The Third Hokage suddenly rose to his feet. After thinking it over with a frown, still uneasy, he called out to Kari, the captain of his Anbu guard and also his son. The group quietly left the Hokage Building and headed for Kimura Yao's home.

At this point, the appearance of a spy in Konoha was instead a minor matter. The most crucial thing was determining whether Kimura Yao had truly had his body taken over by someone using the Spirit Transformation Technique.

If all his suspicions proved true—

Then this would be an excellent opportunity to obtain the Immortality Technique.

Even if he could not achieve immortality, he could at least live into another lifetime.

As long as he was given another lifetime, the Third Hokage was confident he could completely mold Konoha into his own shape.

The position of Hokage would remain forever within the Sarutobi Clan.

In the future ninja world, the Sarutobi Clan would become the strongest clan.

Thinking of all the benefits that would come with obtaining the Immortality Technique, the Third Hokage remained calm on the surface, but inwardly, he was incomparably excited.

He had completely forgotten that the Spirit Transformation Technique was not a secret technique he could learn. Even if he obtained an immortality technique like Soul Possession, he would be unable to use it. In the end, it would all come to nothing.

It could only be said that no one could remain calm in the face of immortality, and no one wanted to hand such an opportunity for immortality over to someone else.

The Third Hokage told no one of his suspicions, nor did he intend to let anyone stop him from obtaining the Immortality Technique.

At Kimura Yao's home.

After finishing a bowl of noodles, Li Yao went to the room belonging to his previous body's parents.

Crash... Opening the large cabinet beside the bed, Li Yao rummaged through it, intending to see whether he could find any books or notes related to ninjutsu training.

In the memories Li Yao had inherited from the previous body, his parents had never taught him any ninjutsu. The only ninjutsu he knew now were the Three Jutsu taught at the Ninja Academy.

With Li Yao's current Chakra control, he could cast the Three Jutsu instantly without forming hand seals, and the results were even better than when others used them.

He had used them during practical class that afternoon.

His absolute, one-hundred-percent Chakra control gave him an overwhelmingly powerful talent for ninjutsu.

After forming the seals for the Three Jutsu once, Li Yao had memorized the fluctuations in Chakra changes involved when casting them.

Then, without needing hand seals, he could easily control the relevant Chakra fluctuations within his body and directly cast the Three Jutsu.

Not only was it fast, the results were no different from the Three Jutsu he cast using hand seals.

It could be said that as long as a ninjutsu was not too complicated, Li Yao could cast it without hand seals, and its effectiveness would not be weakened.

With such talent, Li Yao naturally wanted to learn more ninjutsu.

He was alone in this world and lacked a sense of security. Learning more ninjutsu and strengthening himself would give him a greater sense of security.

That was why Li Yao had remained in a state of refining Chakra, not letting even the slightest trace of bodily energy or Spiritual Energy naturally leaking from his body go to waste. He wanted to increase his strength as quickly as possible and gain enough security.

This was also why Anbu Bug's insects could not sense even the slightest trace of Chakra on the surface of his body—because he was refining Chakra every moment.

It was also because of this that Li Yao had immediately aroused Minato's suspicions.

At this moment, Li Yao still did not know that he had already been targeted by the Anbu, and that the Third Hokage was on his way to capture him.

Li Yao continued searching through the cabinet. He had not held out much hope, yet he actually found a ninjutsu notebook at the very bottom.

Judging from the signature, it was a notebook of his previous body's father, Kimura Takuya, recording his ninjutsu research.

Curious, Li Yao opened the notebook.

Thanks to the lingering memories, Li Yao had no difficulty with this world's writing or language. He could read and understand everything in the notebook.

"Transformation Jutsu?"

Li Yao immediately lost interest. It seemed to be merely research into the Transformation Jutsu, one of the basic Three Jutsu. What was there to study about such a low-level ninjutsu?

With doubts in his heart, Li Yao continued reading.

Soon, an interested smile appeared on his face.

In the notebook, Kimura Takuya had divided the Transformation Jutsu into several levels.

According to Kimura Takuya's concept—

A low-level Transformation Jutsu was merely an illusory transformation. It used Chakra to create an illusion that covered the user's body, producing a visual deception through transformation.

The user's physical body did not actually undergo any changes. One touch was enough to reveal the abnormality.

When this type of illusory Transformation Jutsu was trained and applied to its limit, it reached the level of the Invisibility Jutsu unique to the Anbu. By creating an illusion of the surrounding environment over one's body, it achieved a chameleon-like invisibility effect.

This Invisibility Jutsu could be said to be standard equipment for the Anbu. It was simple and practical, and when used well, it could sometimes prove decisive.

Reading this, Li Yao noticed that the notebook seemed to be written in the tone of an Anbu member. A guess suddenly flashed through his mind. Could his previous body's parents both have been Anbu ninja?

It seemed... the more he thought about it, the more likely it seemed.

In the previous body's lingering memories, his parents were hardly ever home. Sometimes, they even vanished for one or two months at a time.

Such a terrifying deployment rate did not seem normal for ordinary ninja.

Furthermore, in those lingering memories, the previous body had rarely seen his parents interact much with other ninja, nor had he ever heard of any ninja who was particularly close to them.

Because only Anbu ninja who needed to conceal their identities would act that way.

Thinking of it this way, Li Yao became even more certain that his previous body's parents had been Anbu ninja.

"Anbu... no wonder they died."

Li Yao sighed inwardly. The death rate of the Anbu was far higher than that of ordinary ninja. Even if it killed him, he would never join the Anbu in the future.

Putting aside those thoughts, Li Yao continued reading Kimura Takuya's notes.

Low-level Transformation Jutsu was not very useful in battle. Any ninja with even slightly more experience could see through it at a glance.

Beyond the low-level Transformation Jutsu, however, there was a more advanced form.

This Transformation Jutsu was no longer an illusion; it possessed tangible sensory qualities.

If one transformed into a large rock or water, one would truly have the tactile qualities of rock or water.

Compared with illusory transformations, this type of physical Transformation Jutsu was far more deceptive.

However, it still had major flaws. It was not a perfect Transformation Jutsu.

Whether it was an illusory transformation or a physical transformation, the principle was to use Chakra to create an object that covered the user, thereby achieving a visual transformation effect.

Put plainly, it was still a Transformation Jutsu based on visual deception, not a true Transformation Jutsu.

Kimura Takuya wanted to create a genuine Transformation Jutsu—one that could truly turn someone into a rock or a bird, changing them fundamentally from matter to life, without leaving behind any trace of Chakra.

Even if the Hyuga Clan's Byakugan, capable of seeing through the body and directly observing the flow of Chakra within, were used to inspect a Transformation Jutsu that had perfectly turned someone into a bird, it would only see a real bird. It would not be able to see any trace of Chakra showing that the bird had been created by the Transformation Jutsu.

"If a perfect Transformation Jutsu like this could really be achieved, wouldn't it be no different from the Seventy-Two Transformations of the Great Sage Sun?"

Li Yao muttered to himself, shocked by Kimura Takuya's idea. If such a perfect Transformation Jutsu were truly created, he could not say how much it would improve combat ability, but it would definitely be a tremendous improvement for Anbu ninja responsible for assassinations and intelligence gathering.

In the notebook, Kimura Takuya went into great detail about the many advantages and possible applications of the Perfect Transformation Jutsu.

First, breaking through a Sensory Barrier would become easy.

All five major ninja villages had their own defensive Sensory Barriers covering them.

Aside from the temporary passages at the main gates, which could be opened and closed, every other area was tightly sealed by the Sensory Barriers.

At the barrier passages by the gates, ninja stood guard at all times, day and night.

Anyone entering or leaving, whether merchants or ninja from the village, needed the appropriate travel documents. Only after the ninja on duty inspected them and temporarily opened the barrier passage could they pass through.

In essence, ninja villages were large, comprehensive military bases, and their defenses were extremely strict.

Under such circumstances, infiltrating in secret was very difficult.

As long as someone entered or exited without permission, they would trigger the Sensory Barrier and be detected by the ninja responsible for it.

In the past, when the Anbu needed to secretly infiltrate one of the five major ninja villages to gather intelligence, they would capture one of the other side's ninja outside the village, then use threats, ninjutsu to seal memories, or other means.

In short, they mainly relied on turning people.

No Anbu member could directly infiltrate another ninja village to gather intelligence.

Because of the existence of the Sensory Barriers, without the corresponding barrier code, it was impossible for any ninja to pass through a Sensory Barrier silently.

This was especially true for ninja with Chakra. Even a ninja like Li Yao, who did not emit the slightest trace of Chakra from the surface of his body, could not escape a Sensory Barrier's detection. It would clearly sense the strength of the Chakra within his body, alerting the ninja on barrier duty and triggering an alarm.