Naruto: Awakening the Mangekyo Sharingan, and Unify the Ninja World

Facing the childish Tsunade, Uchiha Shin chose to bear it.

He shrugged helplessly and said, "I've been practicing using my shadow clones to spar against myself recently. As for those moves, I figured them out on my own."

"..."

Why can you say it so casually, bastard!?

Tsunade suddenly realized that her previous understanding of Uchiha Shin had been completely wrong.

This guy isn't just a genius in medical ninjutsu.

He's capable of creating entirely new taijutsu and ninjutsu at such a young age. His future potential is immeasurable!

In addition to feeling somewhat embarrassed, Tsunade also felt a strange sense of pride.

"Ahem, uh, I think you should change how you address me, right?"

Tsunade perked up and smiled at Uchiha Shin expectantly.

Even Uchiha Mikoto suddenly felt that Tsunade was acting a little shameless now. Uchiha Shin, however, was speechless that Tsunade was still stuck on this topic—he had no real desire to argue about it.

What's the point of calling her 'Sensei'? Wouldn't it be far more amusing to rebel against the Sensei instead?

"Alright then, Tsunade Sensei. How does that sound? Do you like it?"

Uchiha Shin looked at Tsunade teasingly. Seeing him say it so easily, Tsunade deflated like a punctured ball. The pride she had felt just a moment ago vanished in an instant.

Her punch had landed on nothing but air, and now she was just left frustrated.

Uchiha Mikoto, who was watching from the side, laughed softly before adding, " Tsunade Sensei, do you like how I'm calling you that too?"

Watching the two of them team up against her, Tsunade was even more irritated but completely helpless.

Uchiha Shin had no intention of continuing to 'bully' Tsunade. Since she was his teacher now, he fully intended to make the best use of her.

"My dear Sensei, I have some questions for you."

"..."

Tsunade suddenly felt that being Uchiha Shin's Sensei was not going to be easy.

You saw me naked just a few minutes ago, and now you're suddenly coming to ask for guidance like nothing happened. Can't you give me a break!?

"Fine, just ask. But don't ask anything weird."

"If you want to learn my super strength, I can teach you."

Tsunade quickly regained her composure, patting her chest confidently.

She had never officially taken on a student before, but she figured she would make a good teacher.

Uchiha Shin blinked, momentarily distracted by the way her 'assets' bounced. He quickly forced himself to focus again.

That's the problem with being around Tsunade—staying mentally focused was an ongoing challenge.

"I wanted to ask about chakra nature transformation."

"Oh? You're already starting to look into that?"

Tsunade studied Uchiha Shin with a complicated expression before sighing.

At least he's asking a serious question.

"Normally, it takes years for a shinobi to properly learn chakra nature transformation. But for someone like you, it should be easier.

"The first stage is learning to continuously and stably infuse your chakra with its elemental properties.

"The second stage is about increasing the volume of chakra infused with that nature in an instant.

"The third stage, which is the hardest, is integrating nature transformation into jutsu.

"The jutsu we use today were all created by shinobi before us using nature transformations like this.

"…By the way, what was that technique you used earlier?"

Tsunade's voice lowered at the end, sounding somewhat cautious.

"Rasengan."

Seeing her hesitation, Uchiha Shin decided to clarify.

Tsunade's eyes widened slightly before she continued, "The Rasengan you used earlier is purely chakra manipulation without any nature transformation.

"If you manage to apply an elemental transformation to it, you could create an entirely new jutsu."

At this point, Tsunade couldn't help but be surprised by Uchiha Shin's creativity.

When she was his age, she hadn't even learned many jutsu, let alone created one. But here he was, developing an entirely new technique from scratch.

The Rasengan was incredibly unique—it didn't require hand seals to shape chakra, yet it was highly destructive. Having personally experienced its power, Tsunade had no doubt that it would rank as an A-rank jutsu.

Shaking her head, she pushed those thoughts aside and led both Uchiha Shin and Mikoto back to Konoha.

To train chakra nature transformation, they would need specific materials.

Meanwhile, Uchiha Mikoto needed to continue her training in medical ninjutsu. She had just awakened her three-tomoe Sharingan all at once, so she needed time to fully adapt to it.

Once a Uchiha awakened their Sharingan, the more tomoe they had, the greater their potential.

With the three-tomoe Sharingan already unlocked, Mikoto's future as a jōnin was practically guaranteed.

Uchiha Mikoto couldn't wait to tell her grandfather the news. Uchiha Shin was even considering celebrating the occasion.

But it was also proof of just how deeply Mikoto cared for him.

If he hadn't transformed back from the kunai just now, he had a feeling Mikoto might have awakened the Mangekyō Sharingan in an instant.

The Uchiha are known for their extreme emotions… Could Mikoto end up becoming a yandere…?

Uchiha Shin cautiously glanced at Mikoto beside him.

Mikoto, who had been watching him all along, immediately flashed him a sweet smile.

For some reason, that smile sent a chill down Uchiha Shin's spine.

Thinking back to the Uchihas in his memory, it was hard to find even one who wasn't emotionally extreme. And Uchiha Obito… That guy went completely off the deep end.

Mikoto, meanwhile, definitely had the potential for something similar.

Maybe in the future, should he fake his death for a while to push Mikoto toward awakening the Mangekyō…?

As time passed, Uchiha Shin continued training his chakra nature transformation with Tsunade, though his mind kept drifting back to that thought from time to time.

Meanwhile, news of the situation in Uzushio had begun spreading throughout Konoha.

Sarutobi Hiruzen stood by the window in his office, pipe in hand, silently watching the abandoned Senju compound in the village.

"It looks like he's finally getting desperate. Guess he's sending someone to clean up the mess."

Muttering to himself, Hiruzen called for Danzo.

"Is Root ready?"

"We've already entered Uzushio's territory."

Danzo's voice was cold and emotionless.

"Kumogakure, Sunagakure, and Iwagakure have all sent their forces. Once the battle reaches its peak, Root will step in and provoke the other villages into further action.

"And when the time is right, we'll select a suitable Uzumaki survivor."

Danzo's gaze darkened as he spoke.

He had invested a great deal of effort into this operation.

Meanwhile, Sarutobi Hiruzen—acting as though he wanted no part in it—was leaving all the 'dirty work' to him, only to issue orders as if he bore no responsibility.

Danzo's dissatisfaction with Hiruzen deepened, as did his hunger for the Hokage position.

Hiruzen, seeing his expression, didn't drag the conversation on any longer.

Without hesitation, he gave the order to issue an S-rank mission.