Naruto: The Strongest Medical Ninja in the Shinobi World

Chapter 116 Secret Chamber Cultivation

Chapter 107 Secret Chamber Cultivation

Thousand Hands Mansion.

After having a simple lunch with Tsunade, Hoshino Senju returned to the underground chamber.

Soft, pale blue light filled the room, illuminating the two figures intently engrossed in reading.

Xingyuan Qianshuo closed the book "Records of Sensory Ninja Techniques" in his hand.

The book contains a dazzling array of sensory methods, making it more of a systematic compilation and summary of sensory ninjutsu than a training guide.

Tobirama categorized the sensory ninjutsu he knew into several major categories.

First, there are perception methods and techniques based on the "five senses".

The section on visual perception not only records special eye techniques such as the Sharingan, Byakugan, and Blood Dragon Eye, but also elaborates extensively on visual sharing and visual exploration.

Visual sharing mainly refers to the ability of ninjas and summoned beasts to communicate through chakra resonance and contractual connection.

Tobirama also attempted to share vision among ninjas, but the results were not ideal.

He believes this is due to the ninjas' overly strong mental will, resulting in insufficient chakra connection and resonance.

He wanted to further study the summoning contracts between ninjas and strengthen the connection with blood pacts, but his older brother Hashirama thought it was illogical and forcibly stopped him.

Tobirama made a special note about this to express his regret.

Visual exploration includes Hiruzen Sarutobi's commonly used "telescope technique".

Unfortunately, although the book discusses the principles and techniques, the crystal ball required to perform this technique is no ordinary object; it is a gift from Mount Myōboku and is known as the "Memory Stone."

In addition, Tobirama devoted a significant portion of his writing to the enhancement and modification of the senses by chakra. These modifications were mostly secret techniques passed down within smaller ninja clans, such as the Inu clan and the Izuno clan.

In addition to the five senses, the book also records emotional perception, barrier perception, soul perception, magnetic field perception, and immortal mode.

Emotional perception mainly refers to Mito Uzumaki's ability to sense malice by using the Nine-Tails' chakra, and her method of judging lies by using chakra fluctuations.

Barrier Perception details the principles of perception barriers and the training method for the single-person barrier "Heavenly Canopy Formation"—the very same detection barrier Jiraiya used in his battle against Pain.

The section on soul perception mentions the Kato clan's "spiritualization technique": after the spirit leaves the body, its perception range is extremely wide. Unfortunately, the book does not record its specific training methods.

The discussion on magnetic field perception is quite detailed.

Tobirama even speculated that the ninja world, as a planet, possessed a super-large magnetic field with a basically fixed direction.

His and Minato Namikaze's commonly used ground-sensing technique—"Earth Vein Sensing Technique"—utilizes the Earth's magnetic field to achieve long-distance perception.

In the book, Tobirama proposed that if the amount of chakra is large enough and the control is precise enough, there may be no limit to the distance that magnetic field can be sensed, and it may even be able to cover the entire planet.

The section on Immortal Mode briefly describes the influence of natural energy on perception, but does not delve into it in depth. The relevant content should be included in the book "Research on Natural Energy and Immortal Arts".

In addition, the book also records the "Kagura Mind's Eye" of the Uzumaki clan and the sensory ninjutsu of the Yamanaka clan.

The former is a unique sensory ability of the Uzumaki physique, similar to a bloodline limit; the latter is a relatively ordinary chakra sensing technique, which many genjutsu ninjas can also use, but the Yamanaka clan is particularly good at it.

At the end of the book, Tobirama summarizes some recurring conclusions: the resonance and common origin of chakra; the compatibility of chakra with all things; and the stronger connection between human spiritual power or soul.

These summaries may seem abstract, but they are already quite substantial theoretical achievements.

The Flying Thunder God Technique's seal utilizes the interconnectedness of Yin Release power—the caster's perception of their own seal exceeds the scope of ordinary perception, with a sensing distance far exceeding the norm.

Xingyuan Qianshuo then recalled the other book titles he had seen in the catalog scroll.

Tobirama conducted extensive research and speculation on tailed beasts, the Sage of Six Paths, bloodline inheritance, and even legends of gods.

His pursuit was no longer limited to techniques, but rather to exploring their essence and wanting to know what lay behind power.

Xingyuan Qianshuo could only admire him.

"If Tobirama Senju were given enough resources and time, he might actually be able to deduce the truth about the Otsutsuki clan."

He quickly composed himself and began to think about where to start his cultivation.

His fundamental reliance has always been on the system, but the value of Tobirama's ninjutsu library is self-evident.

The two complement and promote each other, which can broaden his knowledge and jointly drive his rapid growth in strength.

What Tobirama could only record and speculate about, he was able to fully grasp and explore in depth with the help of the system, going much further.

After a moment's thought, Xingyuan Qianshuo decided to start with the most basic one: the sensory ninjutsu of the Yamanaka clan.

Now that his mental strength is strong enough, and he has acquired the mind-reading technique of the mountain tribe, it is most suitable for him to try this kind of sensory ninjutsu.

He mentally reviewed the hand seals and operational details, then slowly closed his eyes and formed the hand seals with both hands.

In an instant, a warm, shining white flame appeared in my mental perception.

That flame was full of life, its intensity no less than his own.

At that moment, Tsunade noticed his movements.

She looked up from the large book in front of her.

"How is it? Have you learned the sensory ninjutsu?" Tsunade asked softly with a slight smile.

"Hmm, I'm quite talented in this area." Hoshino Senju's eyes remained closed, a hint of a smile in his voice. "My senses—your chakra is truly warm and full of life."

"Is that so?" Tsunade smiled upon hearing this, her eyes softening. "Chisaku, your chakra is also quite special, unusually compatible with Yang-attribute chakra."

Although Tsunade is not good at sensory ninjutsu, she is, after all, his lover with whom he spends every day. After spending a lot of time together, she can naturally perceive his chakra characteristics.

Xingyuan Qianshuo's lips curled into a smile as he opened his eyes to look at Tsunade, his gaze carrying a hint of mischief.

Tsunade immediately guessed what he was thinking and gave him a disapproving glare.

He thought to himself, "Qian Shuo is still young and doesn't know how to restrain himself—I need to remind him of this."

A thought flashed through her mind. She looked down at the book in front of her, pondered for a moment, and asked, "Qian Shuo, where do you think the limits of Yang Escape are?"

"Hmm————" Xingyuan Qianshuo rested his chin on his hand and began to think seriously.

He didn't know how Tobirama discussed it in the book, but he answered according to his own understanding: "Yin Release and Yang Release are the two most important nature transformations of chakra. The ultimate of Yin Release is creating something from nothing," while the ultimate of Yang Release is "giving life to inorganic things."

"If the two could be combined, perhaps—it would be possible to create all things in the world."

Tsunade was slightly surprised: "What you're saying is very similar to what my great-grandfather thought. Is it really possible to do it?"

"Theoretically speaking, chakra has infinite possibilities. But to reach its peak, it's not something that can be achieved simply through talent or hard work; it can even be called a leap in the level of life itself," Hoshino Senju replied calmly.

His words sounded too distant to Tsunade.

Tsunade has always disliked vague and unrealistic things, and therefore could not agree with the paths taken by Orochimaru and Jiraiya.

At this moment, Xingyuan Qianshuo said again: "For Yang Dun, at least the regeneration of limbs and organs is a visible direction."

Tsunade nodded.

Rather than pursuing the ultimate Yang Release, choosing a tangible and visible goal is more acceptable to her.

The Tobirama Ninjutsu Library contains too much information to be studied in just a day or two.

Throughout the afternoon, Xingyuan Qianshuo perused "Records of Perception Ninja Techniques," "Sword Techniques Insights," and "Physical Techniques Insights," studied the Earth Vein Perception Technique, the Eight Gates Formation, and the Detonation of Incantation Talismans, signed the Rashomon Summoning Contract, and learned the Multiple Shadow Clone Technique.

He had already mastered the art of detonating incantations, and he had long since opened the first three gates of the Eight Gates Formation, but he still needed time to cultivate and master the Earth Vein Perception Technique.

The Multiple Shadow Clone Technique uses the same hand seals as the regular Shadow Clone Technique, but the way the chakra is circulated within the body is slightly different. At several key acupoints, a "connection opening" method is adopted, which completely releases the body's constraints on chakra, thereby greatly increasing the number of shadow clones, but also bringing corresponding risks.

In addition to these, he also noted down three genjutsu he had not yet mastered, as well as several water and wind ninjutsu.

Compared to powerful ninjutsu, secret techniques, and forbidden techniques, Tobirama's numerous studies and conjectures are the true essence—a summary and culmination of his lifelong learning.

However, Xingyuan Qianshuo restrained the urge to study it now.

These studies and conjectures can enrich his knowledge and benefit him greatly in the future, but they cannot form immediate combat power.

The material he read today is enough for him to digest for a while.

It was already evening when I emerged from the underground space.

Shizune wasn't there for dinner. She had gone back to the home of her adoptive relatives; she usually only came to the Senju estate on Saturdays.

Xingyuan Qianshuo did not immediately ask Minato for the Flying Thunder God Technique and the Earth Vein Perception Technique.

He planned to cultivate himself first, and then discuss the problems when they arose.