I, Uchiha Yu, am solely focused on cultivating immortality

If Chapter 100 can't get the forbidden technique, then I'll develop my own!

Uchiha Yu enthusiastically explained to Uchiha Shisui the characteristics of the "Dark Travel Technique," "Flying Thunder God Technique," and "Impure World Reincarnation Technique," as well as their initial applications—targeting every ninja of the Uchiha clan.

The Dark Travel Technique combines Wind Release, Earth Release, and Water Release, and uses genjutsu as its foundation to create an unbreakable darkness. It targets the Sharingan's dynamic vision, visual genjutsu, and ninjutsu replication.

The Flying Thunder God Technique is a reverse summoning technique performed using sealing techniques. It achieves a teleportation effect by traversing space and is designed to target the Sharingan's dynamic vision. Unlike the Dark Travel Technique, this technique is for offensive purposes.

Uchiha Yu expanded on the Flying Thunder God Technique's extension, the Flying Thunder God Slash, which Tobirama Senju also possessed, having even managed to defeat a Mangekyou Sharingan user. This further solidified the suspicion that the Uchiha clan was targeted.

The Impure World Reincarnation technique can temporarily revive the dead at minimal cost. Until the life and chakra of the sacrificed body are exhausted, the revived dead are immortal.

Uchiha Shisui was sweating profusely upon hearing this, and couldn't help but ask, "Brother Yu, this technique isn't aimed at us, is it? Resurrected beings with immortal bodies can't target the Sharingan."

Uchiha Yuu laughed and said with a smile, "The Impure World Reincarnation Technique is a forbidden technique of the auxiliary type. The Second Hokage developed this technique to complement a forbidden suicide technique called 'Mutual Multiplication Explosive Tags'."

The Mutual Explosion Tags are the ninja world version of the All-or-Nothing Technique, combining summoning and sealing techniques to leave a mark similar to the Flying Thunder God Seal on the enemy's body, and then summoning the tags to detonate them.

The key is that when each explosive tag explodes, some of its power is converted by the psychic mark, generating two new psychic marks and activating them.

As long as the detonation tags targeted by the spell are in sufficient stock, such a series of explosions with increasingly larger yields will always be able to destroy the target.

The reason why the Multiplying Explosive Tags is called a forbidden technique is because it activates too quickly. From the moment the first explosive tag is detonated to the simultaneous explosion of the sixty-four explosive tags in the seventh round, the time required is just over one second.

No ninja could escape the killing range in time. Even the Second Hokage's use of the Mutual Explosion Tags was a suicidal act that would have resulted in certain death.

Therefore, the original purpose of developing the Impure World Reincarnation technique was to create a caster who could not be killed.

Uchiha Shisui frowned deeply. From the basic ninjutsu he had learned, ninjas were inherently fragile and could be killed with shuriken and kunai. Explosive tags, such powerful ninja tools, would kill a ninja the moment they detonated. He couldn't understand why the Second Hokage would develop such an outrageously powerful technique.

Uchiha Yu naturally guessed what Shisui was thinking, and he said, "Even after the Sharingan advances to the three-tomoe stage, there is still a huge room for improvement, which is called the Mangekyou Sharingan."

"The Mangekyou Sharingan's eye techniques are ever-changing, but there is one unified technique—Susanoo. It is a giant composed of a mixture of eye power and chakra, possessing an 'unbreakable' defensive power, and can almost ignore all ninjutsu attacks."

The amount of information conveyed by Uchiha Yu was simply too much; Uchiha Shisui's eyes were already glazed over as he listened, muttering to himself, "How could the Second Hokage do this?"

Uchiha Yu lightly flicked Shisui on the forehead, snapping him out of his daze, and then scolded, "Idiot Shisui, didn't I teach you that when considering the actions of our predecessors, we must take into account their historical context?"

"The First Hokage, the Second Hokage, and Madara Uchiha were all born in the Warring States period. They were mortal enemies and fought each other for nearly a thousand years to seize the rich land of the Land of Fire."

"Born and raised in that environment, as a member of the Senju clan, he should have worked hard to research techniques that were aimed at the Uchiha clan. That's what Lord Tobirama Senju should have done back then."

"In their generation, at least a thousand people on both sides died from the other's ninjutsu, swords, and kunai. Even the clan leaders of both families perished in the battle."

"Going back a thousand years, the blood feud between the Senju and Uchiha clans was as vast as a mountain and as deep as the sea, something that a new generation like you and me can hardly imagine."

Uchiha Yu remarked with emotion, "Under such intense hatred, it's amazing that Lord Senju Hashirama and Lord Uchiha Madara were able to set aside their hatred, suppress the rebellious sentiments within their clans, and work together to establish Konoha Village..."

"I can only describe them as great, and even the Second Hokage, Tobirama Senju, was an equally remarkable and great figure."

"The Second Hokage restrained his hatred and devoted his life to building and protecting Konoha. He even got ahead of us in integrating the Senju clan into Konoha, completely eliminating the target of our Uchiha clan's hatred and ensuring the stability of Konoha. He was a truly remarkable Hokage."

Uchiha Shisui stared in disbelief, then at Uchiha Yu, and then at Uchiha Shin'in who had taken care of him.

The old man nodded and said, "Lord Tobirama was indeed a remarkable Hokage. He was the one who made us old folks completely let go of our hatred. By the time of Fugaku's generation, we had completely forgotten the thousand-year-old blood feud."

"Unfortunately, his judgment in choosing people was poor; the Third Hokage he ultimately picked was..."

Uchiha Shisui nodded thoughtfully, while Uchiha Yu smiled with narrowed eyes, quite satisfied with Shisui's reaction.

But at that moment, he unexpectedly overheard Uchiha Kumaichiro's words, and he frowned and said, "Actually... I think that although Hiruzen Sarutobi is despicable, he's not as bad as you think."

Uchiha Yu stared at Yuichiro in disbelief for a long time, then turned to Uchiha Ryunosuke and asked, "You think so too?"

Elder Ryunosuke hesitated for a moment, then nodded and said, "The worst one is Shimura Danzo."

Uchiha Yu: "..."

Are these two elders serious?

Uchiha Yu quickly realized that the two elders were the same age as Hiruzen Sarutobi. After they started remembering things at the age of five, they lived in the prosperous era after the establishment of Konoha Village. The time they grew up was the longest period of peace, a honeymoon period in which the Senju and Uchiha clans worked together.

Perhaps it was the unprecedentedly happy childhood in the ninja world that shaped the elders' indelible innocence into their personalities. Even after they experienced brutal wars as adults, they still believed in the goodness of human nature.

There's nothing wrong with the two elders being a little naive, because that's what makes them trustworthy, unlike Uchiha Setsuna, whose heart was filled with uncontrollable obsession and malice.

Uchiha Yu reached out and touched Uchiha Shisui's head. In fact, he accepted Shisui because the child had the same innocence.

Only those with innocent and kind hearts can inherit his kindness in the future, and only then can the Uchiha clan they lead become the force behind him, an aid to his cultivation rather than a hindrance.

Therefore, the purpose of Uchiha Yu's education and guidance was never to erase this innocence and pure goodness, but to add a layer of protection for his thinking, so as to prevent others from taking advantage of his innocence and harming his life and interests.

Why can't a dragon slayer be kind?

……

The next day, Uchiha Yu, carrying a copy of the Shadow Clone Technique, embarked on a journey to the battlefield in the Land of Hot Springs with Miwa Masayo.

Fugaku Uchiha failed to obtain even a single forbidden technique from the Third Hokage, which severely damaged his prestige within the Uchiha clan once again.

Regardless of the reason, breaking one's word is a serious dereliction of duty.

As the clan leader, Fugaku Uchiha possessed vast resources and immense power. No one in the clan could restrain him from a leadership perspective, nor would anyone listen to his reasons for having no other choice.

If war hadn't already broken out and the Third Hokage hadn't begun conscripting Uchiha clan ninjas, there might already be people protesting or even proposing his removal.

Fugaku Uchiha was well aware of his precarious situation, so he worked even harder, sometimes working through the night at the security headquarters, unknowingly neglecting his family.

After arriving in the Land of Hot Springs, Uchiha Yu learned about the subsequent developments from a letter sent by Uchiha Shisui through a little ninja cat.

He naturally disregarded Fugaku Uchiha's efforts, choosing to focus on his current task during a crisis—a typical subordinate mentality.

When a leader encounters a crisis, the first thing to do is to conduct a comprehensive review of all recent events, rethink who the most dangerous enemy is, what the most urgent matter is, and focus on whether it is time to adjust the direction.

Once you understand this, you can make targeted adjustments. At the very least, you can identify the person causing the problem. Even if you can't solve the problem, you should at least deal with the person who caused it.

For example: Uchiha Yu.

Therefore, the group led by the Third Hokage and Danzo Shimura was quite competent, with a total of 13 Root ninjas following Uchiha Yu all the way to the Land of Hot Springs.

If you say they didn't come for Uchiha Yu, even a dog wouldn't believe it.

The only thing Uchiha Yu is curious about now is what kind of assassination plan Shimura Danzo devised.

Should we recklessly charge in, lure the Hidden Mist Ninja into an attack, or arrange a seemingly simple but actually impossible mission?

He smiled and said to Masayo Miwa, "We'll see tomorrow."

The tabby cat didn't care about these things; she believed that Uchiha Yu could solve the problem perfectly, so she was more concerned about the ninjutsu.

"The forbidden techniques you want are all valuable items. If we could obtain them, everything we do would be much more convenient. What should we do now?"

"It's simple. If Tobirama Senju was able to develop such a forbidden technique from scratch, why can't I replicate it?"

"Meow? This is something that tens of thousands of ninjas in the entire ninja world can't do. You really can do it, meow?"

"Hehe, the old man Xin Yin and the others jokingly call me Tobirama of the Uchiha clan. I think I can do it."

"In any case, the difficulty I faced was simpler than the Second Hokage developing these ninjutsu out of thin air. When he was developing these ninjutsu, he didn't even know if he could succeed."

"Now, Tobirama Senju has completed the most important step in the development of ninjutsu. He has proven that such miraculous forbidden techniques can be successfully developed. And since I know the origin of these forbidden techniques, I can naturally reproduce them."

"Okay, meow, so your first development target is...?"

"The Flying Thunder God Technique, this forbidden technique is based on the effect of summoning techniques. It uses sealing techniques to achieve the effect of summoning or reversing summoning, summoning the caster to the sealed location."

"We've both experienced both spirit communication and reverse spirit communication, and we've also used that opportunity to achieve remote teleportation, so the focus of our development is on researching sealing techniques."

Uchiha Yu patted the large and small scrolls on his back and said with a smile, "This is the knowledge of sealing techniques that I copied from the Archives, the Shisui family, and the two elders' families."

"The Uchiha clan's foundation is truly astonishing. They have been enemies with the Uzumaki clan for hundreds of years, and their ancestors used the Copy Eye to copy all of the Uzumaki clan's sealing techniques."

"With the basic knowledge of sealing techniques publicly shared by Shisui and the elders of Konoha, it can be said that our Uchiha clan also has a complete Uzumaki Sealing Technique lineage."

"It's a pity that such important knowledge, painstakingly accumulated by our ancestors over generations, has been forgotten and left to gather dust in the archives."

"Now all this knowledge is at my disposal. As long as I master these sealing techniques, I am fully confident that I can reproduce the Second Hokage's Flying Thunder God Technique and Impure World Reincarnation Technique."

"The Impure World Reincarnation Technique... You really want to meet the Second Hokage, meow."

Uchiha Yu chuckled and joked, "Of course! How could I, the Uchiha Tobirama, not meet the real Tobirama? Besides, I sincerely ask this genius to help me correct my path of Sage Mode."

The tabby cat tilted its head and asked, "It's said that this Second Hokage really dislikes the Uchiha clan. Aren't you afraid he'll lie to you?"

Uchiha Yu replied confidently, "Of course I'm not afraid."

"I don't care what he says, I don't even need to care if he's lying. As long as this master of forbidden arts speaks, he will definitely convey the inspiration that comes to his mind, and that's enough."

"Rika-chan, I'm not an idiot like the Third Hokage, who only follows the path pioneered by his predecessors and modifies the ninjutsu of his father and the Second Hokage."

"Meow, Yu, you can't even beat the Third Hokage, how dare you look down on him like that?"

"Tsk, it's not that I look down on his current fighting strength, it's that I look down on his ninjutsu research ability. Look at that sword shadow clone technique, an A-rank ninjutsu that can be blocked by a C-rank Earth Release: Earth Wall. What kind of garbage is that?"

"The only interesting technique developed by the Third Hokage is the Great Five Elements Barrage; he couldn't even create a bloodline limit."

"Only someone like him would need to worry about being deceived by Tobirama Senju."

Uchiha Yu patted his chest and said proudly, "I'm different. I'm very confident in my research and development of ninjutsu and sage techniques. What I need is the inspiration and vision of Tobirama Senju, the master of forbidden techniques. Even if he just mocks me for doing something wrong, I'll still get the precious inspiration I want."

Masayo Miwa was shocked by his owner's shamelessness. He froze in his grooming, muttering, "So you were planning to use Tobirama Senju in reverse from the start? And you actually did this, meow?"

"No wonder you keep saying that the Impure World Reincarnation Technique is a divine skill. Following this line of thought, it certainly has immeasurable value, meow."

Uchiha Yu nodded in agreement: "That's right. Without paying any great price, we can temporarily revive historical geniuses, form our own strongest research group, and use their intelligence to overcome the many obstacles on the path to immortality."

"The value of the Impure World Reincarnation technique is comparable to that of Kaguya Otsutsuki."

"Kaguya Otsutsuki... what nonsense are you spouting, meow? That's a god!!"

"Heh, so-called gods... are nothing more than extremely powerful chakra controllers. One day..."

Uchiha Yuu wasn't afraid of Kaguya Otsutsuki at all, but regarded her as the best and most perfect research subject.

Although this goddess of the rabbit is also his ancestor, the generations are too far apart, and the relationship between them is not as close as that between enemies of Sunagakure. He has no ethical psychological burden in using her as a research subject.

As for the identity of a god, he didn't care about it at all. In his mind, it was already an extraordinary act of mercy not to kill a god who wanted to bring about the end of the world.

Moreover, Kaguya Otsutsuki possesses unimaginable power and strength, but lacks the matching intellect and combat ability, making her a highly desirable prey.

Rather than wasting time sealing him on the moon, it would be better for him to become Uchiha Yuu's research subject "freely." After all, his research methods differed from Orochimaru's; they weren't the destructive methods of skinning, dissecting, and dissecting, but rather meticulous and thorough observation.

Take a true deity as a reference, learn how she uses her power, and forge a path that suits you.

Kaguya Otsutsuki ate the Chakra Fruit, which was a condensation of the power of the ninja world, and thus achieved the Bloodline Limit. Her power inevitably carries the characteristics of the power of the ninja world and embodies the natural laws of the ninja world, making her significantly different from other Otsutsuki.

Although the path of immortality that Uchiha Yu followed was completely different from the immortality path of the Five Elements World, the principle that immortality follows the earth, the earth follows heaven, heaven follows the way, and the way follows nature will never be wrong.

Sage techniques inevitably originate from nature. Nature is obscure, difficult to understand, and constantly changing and conflicting. However, the natural rules manifested in Kaguya Otsutsuki will inevitably become clear due to the abundance of power, comparable to the manifestation of natural rules under extreme conditions.

In the ninja world, there is no better role model for cultivation than the Goddess of the Rabbit. Even if you can't make her your Daoist partner, you should at least make her your close Daoist friend.

That phrase, "Fellow Daoist, please wait," should be shouted for her once.

Don't worry, I, Uchiha Yu, don't care about your life, fellow Daoist.

……

Uchiha Yu, who was envisioning the future with his partner, was suddenly awakened. He sensed someone approaching him, carrying a hidden malice and killing intent, and a cold, stagnant stench wafted from afar.

Masayo Miwa also sensed something amiss. She whispered, "It's Root ninjas. They're coming."

Uchiha Yu was deeply surprised: "To come directly to me from the Konoha front-line camp... it seems Lord Danzo's plan wasn't very sophisticated. Is he trying to force his way in?"

When the Root ninjas appeared, Uchiha Yu and Miwa Masayo were so surprised that they were speechless.

It's understandable that they don't wear masks, but what's with those almost identical, stiff, puppet-like smiles on their faces?

That's terrifying.

(End of this chapter)