Conjecture of the Biological Weapon (Seeking Follows)

Whether the influence of the extraordinary is great depends not only on its prevalence, but even more so on the upper limits of the extraordinary system.

In the Ninja World, the peak Kage can easily alter the terrain; while they might not be able to move mountains or fill seas, they are comparable to self-propelled humanoid missiles.

Yet, for people in this world who cultivate chakra, their achievements are destined to be limited.

Even with excellent aptitude, at most one would become a Jonin—and a Jonin like Kakashi who lacks chakra, struggling to contend with the modern era.

However.

Sarutobi Hiruzen did not draw an absolute conclusion.

With the Chakra Seed, Masahiro's future descendants will also be able to refine chakra.

If they optimize their genes generation after generation to adapt to the power of chakra,

they might also be able to break through to higher realms step by step.

Sarutobi Hiruzen seemed to recall something and said to Masahiro, "Sit still, clear your mind... do not resist."

Immediately after, seven types of chakra nature transformations suddenly ignited in Sarutobi Hiruzen's hands, operating in a counter-clockwise direction, before he pressed his palm onto Masahiro's forehead.

"Whoosh."

A powerful suction force emanated from Sarutobi Hiruzen's hand, and the pitiful amount of chakra within Masahiro's body was completely absorbed by him.

"As expected..."

Seeing this, Sarutobi Hiruzen narrowed his eyes with a look of realization.

"The Chakra Seed I planted indeed carries my mark."

"It can also be reclaimed."

Sarutobi Hiruzen's expression held a hint of regret.

"It's just that I lack the Otsutsuki bloodline..."

"There is no way to refine it into a fruit or pill..."

"So, relying on this to achieve an evolution of life level is basically impossible."

Sarutobi Hiruzen shook his head; indeed, without the Otsutsuki bloodline, the chakra system is full of thresholds everywhere.

The so-called Legend of the Five Villages Eye Conflict is not just a saying.

"This level of chakra reclamation is at most useful for recovering chakra when one is exhausted."

Thinking this, Sarutobi Hiruzen returned the chakra to Masahiro; he had no interest in such a meager amount.

Masahiro, however, was completely bewildered, not knowing what had happened, only feeling the power within his body vanish and reappear in an instant.

He only felt even more awe toward Sarutobi Hiruzen's methods.

Several days later, On the main road, two tall horses pulled a wide carriage as it traveled along the path.

Sitting behind the horses and steering the carriage was none other than Tsugikuni Yoriichi, who bore a Demon Slayer Mark on his face.

Who would have thought that a carriage driver would be the strongest swordsman in this world?

Of course, this was not requested by Sarutobi Hiruzen. Originally, the driver was Masahiro, who had followed along, but Tsugikuni Yoriichi felt it was too hard for Masahiro to travel alone, so he took the initiative to offer to swap shifts.

Masahiro was naturally unwilling or felt embarrassed, but he could not refuse Tsugikuni Yoriichi's kindness.

Inside the carriage at this moment, Sarutobi Hiruzen was sitting comfortably.

Although the road outside was steep and the carriage's construction was primitive, Sarutobi Hiruzen had applied Earth Release nature transformation to the interior, keeping it in a stable state.

Thus, Sarutobi Hiruzen could calmly read the scroll in his hands.

On the other side, Masahiro was practicing hand seals diligently.

That's right, as a ninja, practicing hand seals is an important curriculum, as the vast majority of Ninjutsu require hand seals to be completed.

Masahiro, who had not received ninja education from a young age, had to start from the simplest hand seals.

Although Masahiro was very slow and his fingers were quite stiff, he was practicing with great effort.

Masahiro was drenched in sweat; for an adult whose muscles and bones were already stiff, practicing hand seals was undoubtedly more difficult than it was for a child with flexible joints.

Masahiro glanced at Sarutobi Hiruzen, who was immersed in his scroll, and secretly encouraged himself.

If someone as strong as Sarutobi-sama is still learning, he must work even harder.

Sarutobi Hiruzen was indeed learning brand-new knowledge; even for the Professor of Ninjutsu, this was a new field.

On the scroll in his hands, several words were clearly written:

Puppetry Notes.

That's right, what Sarutobi Hiruzen was studying at this moment was the signature technique of Sunagakure: Puppetry.

As for the origin of these notes.

Konoha White Fang remarked that the Sand ninja puppeteers felt quite satisfying to cut down, and they could even drop scrolls.

Of course, the Sarutobi Hiruzen of the past naturally looked down upon Puppetry, as Konoha was a great village of jutsu.

It possessed the richest accumulation of jutsu and an endless stream of geniuses in the field.

The vast number of secret techniques left behind by the Second Hokage alone were already endless—ahem, or rather, inexhaustible.

Naturally, he had no interest in Puppetry, which had a decent floor but a disappointing ceiling.

However, having transmigrated to a new world, Sarutobi Hiruzen began to consider Puppetry as a reference.

The insights on Puppetry from Chiyo's son and daughter-in-law, while mostly focused on mechanical parts, also contained conjectures regarding Human Puppets.

"A Perfect Being naturally has the potential to become a quite perfect Biological Weapon..."

Sarutobi Hiruzen had this thought last time.

"Things like Biological Weapons are common on the battlefields of the Ninja World."

"Human Puppets, Summoned Ninja Beasts, the Insect Technique of the Aburame clan, and so on."

"They all fall within the scope of Biological Weapons."

"And what a Biological Weapon must achieve is..."

As a Kage who had experienced several Great Ninja Wars, Sarutobi Hiruzen naturally had a profound understanding of war.

"Controllability, power, and cost-effectiveness."

Combining this with modern information on warfare, Sarutobi Hiruzen felt that the Biological Weapons of the Ninja World were not very impressive.

Summoned Ninja Beasts and secret techniques were not cost-effective.

Human Puppets had good cost-effectiveness in terms of recycling corpses, but they also required experts to control them; otherwise, the results were pathetic.

Not to mention the Tailed Beasts, which were almost always in a state of complete loss of control, and Jinchuriki were basically unable to be utilized reasonably on the battlefield.

Even in Kumogakure, which claimed to produce stable perfect Jinchuriki, or Konoha, which possessed the strongest Sealing Jutsu, examples of Tailed Beasts running wild were common.

"And as long as the controllability of the Perfect Being from the Demon Slayer World is solved..."

As Hokage, Sarutobi Hiruzen couldn't help but want to develop Konoha's advantages in war.

"The cost-effectiveness goes without saying; the cost-effectiveness of an infinitely regenerating Perfect Being is maxed out."

"Its power can also reach the level of a Jonin."

"It could absolutely achieve a significant advantage in war."

Just as Sarutobi Hiruzen was lost in his thoughts, the voice of Tsugikuni Yoriichi sounded from outside.

"Lord Sarutobi..."

"We have arrived..."

Sarutobi Hiruzen nodded and stepped out of the carriage with Masahiro.

Descending with them was a tall, masked man; judging by his aura, it was Perfect 1.

Through his research into Impure World Reincarnation and Puppetry, Sarutobi Hiruzen had initially managed to control the actions of Perfect 1 using specialized talismans.

The group stepped down from the carriage and walked a few paces forward, where a small city wall stood prominently not far away.