Obito Reborn With Double Kamui

For example, Orochimaru's entire set of trump cards.

Whether it was the Orochi-style Substitution Jutsu, various forbidden techniques involving summoning and sealing, or his vast knowledge and research abilities, he was undoubtedly the epitome of Konoha's genius academic elite.

And then there was that little girl who refueled him with chakra during the Fourth Great Ninja War—Sakura.

She didn't have an exceptional bloodline, yet at a young age, she already possessed extraordinary chakra control and mastery over medical ninjutsu.

These weren't abilities one could gain through bloodline mutations alone; they required an immense amount of theoretical knowledge as a foundation. Thinking about it, she must have been a student similar to Orochimaru back at the Ninja Academy—a top academic achiever.

Another example was his fellow Uchiha, Shisui. The title of "Shisui of the Body Flicker" was earned mostly through his mastery of Body Flicker and teleportation techniques, although his Sharingan's genjutsu certainly played a role as well.

Even Uchiha Sasuke, when he fought against Madara—despite having less combat experience, one less Rinnegan than Madara, and weaker chakra compared to Madara, who was the Ten-Tails Jinchūriki—was at a disadvantage in every way. By all logic, Madara should have completely overwhelmed him.

Yet, when they actually fought, Sasuke managed to suppress Madara in several one-on-one exchanges, forcing Madara to suffer considerable setbacks.

From Obito's perspective, while Madara was indeed powerful, his combat experience mostly came from the Warring States Period, where battles relied on large-scale, sweeping techniques. In terms of precision and fine control, he fell short compared to Sasuke, the Konoha academic elite.

Sasuke's ability to wield his Rinnegan's space-swapping power with godlike precision likely stemmed from his foundation in the Three Basic Jutsu.

Thus, in Obito's eyes, much of the knowledge imparted by Konoha's Ninja Academy was not only useful but very useful. Minato-sensei, for example, had been a civilian-born ninja who couldn't learn advanced clan techniques. As a result, he practiced the Three Basic Jutsu relentlessly. But that didn't hinder him—when he gained access to the Flying Thunder God Technique, he mastered it rapidly and became a battlefield assassin who moved like a ghost.

Obito couldn't help but admire Senju Tobirama's foresight. The reason why the Three Basic Jutsu were mandatory graduation requirements at the academy had deep significance.

At the same time, though, he had to admit—Senju Tobirama was incredibly cunning.

The Three Basic Jutsu seemed utterly ordinary. Most bloodline ninja clans wouldn't waste time on them. Only civilian-born ninjas, lacking resources, would invest the effort.

But even if someone mastered the Three Basic Jutsu, they still needed the advanced jutsu from the Scroll of Seals to truly become powerful.

And the Scroll of Seals was controlled by the Hokage's faction. Unless one was like Shisui, possessing a bloodline limit of their own, a civilian genius had to pledge loyalty to the Hokage's camp if they wanted to grow stronger. This way, the Hokage's faction maintained its balance of power against the village's great clans.

'Hah, that old Senju fox was naturally devious.'

As for the fifth way to gain strength—Senjutsu.

Senjutsu was closely tied to the Three Great Sage Lands. Unfortunately, Obito had little information about this field. The only thing he could infer was that learning Senjutsu depended on one's physical constitution. Orochimaru failed to master it, while Kabuto succeeded—probably due to his bloodline mutation, which enhanced his physique.

Even Minato-sensei had never learned Senjutsu in life, but after death, once he became the Nine-Tails' Jinchūriki and gained a special constitution, he was able to enter Sage Mode instantly.

That, too, was a reflection of bloodline influence.

Beyond the five methods mentioned, the final way to gain strength was to seek external power.

Sasori's puppets, Deidara's explosive clay, Kakuzu's Earth Grudge Fear, Kisame's Samehada—all of these involved external enhancements to some degree.

Of course, these external forces overlapped with the other methods.

The reason Obito singled them out was because of the six hundred billion paper bombs that had nearly blown him to pieces.

Those explosive tags were undoubtedly created through Konan's Paper Person of God technique, an extension of her own abilities.

But explosive tags could also be purchased with money. If Kakuzu had spent all his earnings on explosive tags and combined them with Senju Tobirama's Mutual Multiplication Explosive Tags, he could have unleashed something just as terrifying.

As someone who had experienced it firsthand, Obito felt that those six hundred billion tags were probably more devastating than Hashirama's Wood Release or Madara's Complete Susanoo.

That technique was a super move even at the Six Paths level. Used correctly, it could have even made Kaguya suffer. If not for his ability to phase through attacks and his use of Izanagi, he really would have been blown to bits.

However, now that he had obtained double Kamui, both his teleportation speed and his phasing duration had drastically improved. Even if Konan attempted her attack again, she likely wouldn't be able to touch him.

He could even use his left eye to directly warp away the explosion.

Because of this, when he thought about it carefully, there were now very few techniques left in the ninja world that could threaten him.

In summary, every method of gaining strength had its limitations, but many could be stacked together. And the foundation provided by Konoha's Ninja Academy was particularly compatible with all of them.

In his previous life, he had been a dead-last. Even after becoming a powerful ninja, he had relied heavily on his visual jutsu.

In this life, it was time to build a proper foundation.

So, during this ninjutsu class, Obito paid extra close attention—even opening his textbook, one he had barely touched in his previous life, to carefully study its contents…

This scene did not escape Rin's notice. She couldn't help but smile warmly, 'Obito… he's really grown up.'

.

.

.

Just like that, time passed unconsciously, and soon, the class was over.

"Alright, that's it for today's lesson. You can take a short break before gathering at the outdoor training field," After announcing the end of class, the instructor left the classroom.

The Ninja Academy was a place for training shinobi. Besides theoretical knowledge, there were many outdoor classes, including combat practice, shuriken throwing, survival exercises, team cooperation drills, and stress endurance training.

In fact, almost half of a student's school time was spent outdoors.

After class, Obito naturally found Rin and walked with her toward the training field.

Rin squinted at him playfully, "Obito, you actually started reading today. Normally, you hate boring stuff like that."

Obito's gaze was deep, "Rin, people grow up. I don't want to be dead-last anymore. I want to protect you from getting hurt, so I have to learn a lot, and become much, much stronger."

Rin nodded and clenched her small fists, "Obito, do your best!"

———

"First-year Class A, gather here and check in. We're starting combat group assignments."

Soon after arriving at the training field, their combat class began.

At their age, students couldn't yet use high-powered jutsu, so combat practice mainly focused on taijutsu duels, with occasional use of the Three Basic Jutsu.

Shuriken were strictly prohibited in matches, as children lacked control and might accidentally injure each other.

Obito wasn't particularly excited. While combat class had once been his favorite—since he always believed he could surpass Kakashi—now, after all the battles he had been through, fighting children felt utterly meaningless.

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