The Bigger Your Imagination, the Greater Your Achievements (Please Bookmark and Recommend)

It seemed there really wasn't much of a connection!

But Gengetsu vaguely remembered looking it up in his previous life: the word "chakra" came from Sanskrit, and ninja training had its roots in Indian yoga.

And he happened to know about the Three Channels and Seven Chakras Theory in Indian yoga. Of course, he had also encountered it while studying traditional Chinese medicine in his previous life, so his knowledge was limited.

But coincidentally, the Brow Chakra among the seven chakra energy fields was located exactly where the Yin Seal stored chakra.

That was why Gengetsu wanted to obtain the Yin Seal—to find out whether this technique was related to the Seven Chakras Theory he knew from his previous life.

"The Yin Seal finely adjusts the chakra throughout the body, allowing excess chakra from ordinary times to be sealed away. Another effect it brings is preserving youth."

"But does that effect come from the Yin Seal itself, or because the chakra it seals happens to be located at the Brow Chakra, this energy field of the human body?"

"And can the Yin Seal only seal chakra in the brow?"

"Could it really be just for beauty?"

Gengetsu frowned, deeply dissatisfied with Tsunade's answer.

"This teacher is way too irresponsible..."

Gengetsu grumbled inwardly, forgetting that Tsunade had never wanted to be a teacher in the first place.

"I can't determine the exact situation just by studying the principles. I can only feel it once I cultivate it myself!"

"It's just... is it really okay to seal chakra in my brow? I'm a man..."

Gengetsu's face suddenly twitched. After thinking for a moment, he said, "Looks like I need to start planning a partnership with Orochimaru. If I want to explore the seven chakra energy fields, I'll have to use clones. Shadow Clones won't do!"

He did not know much about cloning, but fortunately, there was Orochimaru. Still, that guy was dangerous too.

"Still, what matters most right now is the Yin Seal, as well as Yin Release Chakra!"

Steadying his thoughts, Gengetsu began earnestly studying the Yin Seal.

The next day, Gengetsu still sent out a Shadow Clone to attend school, while his Main Body remained at home studying the Yin Seal. After last night's research, he had already gained a deep understanding of it. For him at present, the greatest difficulty of this technique was not anything else, but chakra control—the very thing he had originally been best at.

Without question, this technique was a Sealing Technique, and the Uzumaki Clan had made its name through Sealing Techniques. They were extraordinarily gifted in that regard, and Gengetsu had long since learned Sealing Techniques from Kushina, so that part was not difficult. Yet this technique's demands on chakra control had reached an absurd level.

All he could say was that it truly deserved to be the prerequisite ninjutsu for those two forbidden techniques!

There was another crucial point: the Acupoints and Meridians used by the Yin Seal were connected to the Pituitary Gland.

Gengetsu finally understood why Tsunade had become so fierce. Of course, that was not the point. The point was that the secret of Tsunade's youthful beauty also came from this.

"If I master the Yin Seal, then given enough time, even without Tsunade teaching me, I should be able to create the two forbidden techniques, Creation Rebirth and the Strength of a Hundred Sealings Technique. Of course, that would take a long time..."

This was not Gengetsu being boastful or arrogant. He simply possessed an astonishing understanding of the human body. Judging by the effects of Creation Rebirth and the Strength of a Hundred Sealings Technique in the original work, the key lay in the Pituitary Gland, which was closely connected to the Yin Seal.

Why? Because the Pituitary Gland could secrete seven extremely important hormones.

First was growth hormone, which promoted growth and development, protein synthesis, and bone growth. Next was prolactin—there was no need to explain that one, right...

The key was thyroid-stimulating hormone, which stimulated thyroid hyperplasia, enlarged Cells, and increased their number.

In short, the Pituitary Gland was the master switch regulating the body's health and balance, controlling the secretion of many hormones that played vital roles in metabolism, growth, development, and reproduction.

After ordinary people reached forty, their Pituitary Glands atrophied, and the human body began to age rapidly.

Clearly, the Yin Seal had an immense effect in using chakra to maintain and nourish the Pituitary Gland. That was why Tsunade, even in her fifties, sixties, seventies, and eighties in the original work, still looked like a young married woman.

"What a shame I don't have the Byakugan..."

Looking at the anatomical diagram on the scroll, Gengetsu could not help sighing. Yet his gaze was not on the Pituitary Gland, but another location.

The Pineal Gland!

Even in his previous life, this thing had been highly mysterious. Medical science had only a limited understanding of it, nowhere near as much as it understood the Pituitary Gland.

But from what was known, the Pineal Gland affected emotional changes, intelligence, and biological clock regulation. Beyond that, it also had a close connection to a person's eyes. It was even called humanity's third eye—the divine eye.

That inevitably made Gengetsu think of the Uchiha Clan's Sharingan, as well as the Rinnegan!

So, if he had the Byakugan, he could take a peek at the Uchiha Clan.

"I have to say, the Hyuga Clan's Byakugan is really being used in the wrong direction..."

Gengetsu could not help grumbling inwardly. At the same time, he suddenly understood why Uncle Snake had embarked on the path of human experimentation. Research like this was simply too addictive.

The thrill of peering into the mysteries of the human body and the truths of the universe could drive someone to disregard everything. Ethics and morality could all be burned to ashes!

"Sure enough, the bigger your imagination, the greater your achievements. The Second Hokage and Uncle Snake are textbook examples!"

"Fortunately, I have the core socialist values... I won't turn into a mad scientist!"

Gengetsu sighed, then lowered his head and continued his research.

At the Ninja Academy, after school that afternoon, Gengetsu's Shadow Clone saw Guy pestering Kakashi not far away and could not help smiling before quickly walking over.

"Guy, Kakashi!"

Gengetsu greeted them with a smile. Ever since Guy's provocation had helped him break through his bottleneck last time, he had taken the initiative to become friends with Guy, and through him, had gotten to know Kakashi. But given Kakashi's current state, they were only acquaintances who nodded to each other.

"Gengetsu, you came at the perfect time! Let's have a passionate contest of youth!"

Guy spouted those chuunibyou lines and let out an impassioned howl. Truly worthy of being a beast. No, a precious beast!

Gengetsu spread his hands helplessly. "Guy, although I'd also love to have a youthful duel with you, I'm only a Shadow Clone. I'm afraid I wouldn't be able to take even one punch from you!"

Kakashi gave Gengetsu another blank look, then said to Guy, "Guy, I'm leaving first!"

"Hey, Kakashi..."

Guy shouted, then gestured to Gengetsu before chasing after him.

Gengetsu stood where he was, watching the two of them depart, unable to help thinking, Yeah... Guy may be a bit of an idiot, but I have to admit, he really is a good teacher and friend. Hatake Sakumo truly had an incredible eye!

Having reached that conclusion, Gengetsu looked toward the distant Hokage Monument. "Hatake Sakumo really was such a pity. An Elite Jonin—possibly even a Kage-level powerhouse—yet he died such a humiliating death..."

"And Shisui Uchiha, then Itachi later on... If they had all still been around, how could Orochimaru have acted so arrogantly in Konoha afterward? Even Nagato wouldn't have been able to gain any advantage!"

Gengetsu sighed inwardly. In the end, those in power simply lacked the confidence to keep everything under control. They feared this and feared that! If it had been the First Hokage or the Second Hokage, they would have been thrilled to see so many talented people emerge. How could they have allowed such powerful figures to be lost?

Still, was it not too unreasonable for an Elite Jonin who had killed countless people to commit suicide over a few rumors? In an anime, he could only blame the original author for making things up, but in this real world before him, it was hard not to suspect there was something more behind it. Yeah, Danzo, that old bastard, definitely had to take the blame for this!

Huh, why was it Danzo again?

Gengetsu secretly shook his head and sighed. "Still, I can only judge things so recklessly because I'm standing outside the situation..."

"But Shisui's Kotoamatsukami really was absurdly overpowered. It could silently alter a person's will... Speaking of which, should I study genjutsu?"

Gengetsu rubbed his chin and fell into thought. In the end, he decided to wait until he had cultivated Yin Release Chakra before considering it.

"But it won't be long now..."