Kakashi Masters All Elements, Rewrites the Ninja World for Rin!

"Tobi, right? I'll make this simple for you."

"You've got two options."

"Either you turn over a new leaf and start following Obito obediently…"

"Or, keep being Madara's mindless lapdog—and I'll send you to meet him in hell."

After calming Obito down, Kakashi said coldly as he looked at the masked figure lying on the ground.

"Eh? But…"

Tobi blinked in confusion.

He had been following Madara since the day he was "born," and although the old man was an unpleasant relic with the charm of a dying cactus, betraying him just like that…?

Even a plant has roots, and so does he—sort of.

"Well, I'll give you three minutes to think about it."

"Oh, and if you pick Obito, you can ask him all about the meaning of defecation later."

Kakashi added with a surprisingly straight face, just before shooting a look at Obito that made him swallow his protest.

"I mean, if it were Madara, he probably wouldn't even give you the chance—he'd just pull your life support plug out mid-sentence."

"Deal!"

Tobi jumped at the offer immediately.

"But on one condition—Obito isn't allowed to hide when he's pooping anymore!"

The masked man wiggled his finger knowingly.

Even if he was technically just a mutated tree-person… he had standards. And questions.

"…Deal," Kakashi nodded solemnly.

"Ka–Kakashi!"

Obito's face turned green in horror.

The trauma flashed before his eyes.

The sneaky footsteps outside every time he went to the bathroom… the whispering… the horror of being stalked during nature's call.

He had finally thought he was free after returning to Minato's team.

But now? Kakashi had just sold him out… for a sentient shrub in an orange mask.

No. He would rebuild the world—a world without Tobi!

But just as he opened his mouth to object, Kakashi swiftly pulled him aside, covering his mouth.

"Listen, Obito," he whispered like a shady merchant in an alleyway. "Tobi can drastically enhance the abilities of anyone he merges with. He's basically a walking power-up."

"And really—so what if he wants to watch you poop? Think of him as your personal chakra Pikachu. It's not like he's charging admission."

"Plus, you won't lose anything but your dignity."

???

Excuse me?

Watch me… poop?

What the hell kind of metaphor was that!?

And Tobi isn't a pet—he's a humanoid nightmare in an orange spiral mask!

Obito gave Kakashi the most exhausted look he could muster.

But after taking a breath and thinking rationally—something he rarely enjoyed—he reluctantly nodded.

After all, Kakashi had never led him wrong before.

Seeing Obito's reluctant agreement, Kakashi gave his shoulder a comforting pat.

Poor, sweet Obito. You're resisting now, but just wait… You'll get used to it.

In his past life, Kakashi had researched Tobi out of pure curiosity—who wouldn't be intrigued by a masked lunatic with bathroom issues?

So, he knew very well that Tobi was not just some ordinary White Zetsu.

He was a unique being—born of the God Tree, the very Son of Chakra!

His most important trait: the ability to drastically boost the abilities of the host when fused.

Essentially, he was a living, detachable, chakra-enhancing buff!

Why else could Yamato, with his barely-passable Wood Style, summon a freaking Wooden Golem?

Among all the White Zetsu, Tobi—who had his own name and everything—was easily the strongest.

And that wasn't all.

With his divine tree origin and Hashirama cells as additives, Tobi might just be the missing key to solving Konoha's Hashirama cell dilemma.

The original cells were too unstable.

Yamato's diluted version? Too weak.

But Tobi? Maybe he was just right.

If Kakashi could harness that and make Shisui's Mangekyō as practical as Obito's, it would be a major win.

That was why he wanted Obito to "recruit" Tobi—bathroom conditions and all.

And if memory served, Obito and Tobi had always had a weirdly close bond in the original timeline.

Kakashi snapped out of his thoughts and put on a cold expression again, looking at Tobi with narrowed eyes.

"Obito agreed. So… what's your final decision?"

"I'm in!" Tobi jumped up and did a little happy dance around Obito.

Obito's brow twitched, but recalling Kakashi's words, he restrained himself.

Fine. First, take him back to the village…

Then, vengeance.

"In that case, Obito, put Tobi into your Kamui space for now."

"Tobi's Earth Style is elite. If my clone hadn't sensed something off and sealed him, you would've been long gone from the Land of Water."

Kakashi's tone became serious again.

When it came to anything born of the God Tree, paranoia was just good sense.

"Wait—huh?!"

"Kakashi, how do you know I even have a Kamui space?"

"More importantly—how do you know the name of my Mangekyō technique?!"

Obito was visibly stunned.

It had barely awakened. Even he wasn't sure how it worked yet!

And yet here Kakashi was, tossing out its name like a textbook definition!

Was it possible… he had used these eyes before?

"Oh, that?" Kakashi waved it off like it was a trivial party trick.

"Mangekyō reflects the heart. Your power stems from your desire to run away—to isolate yourself in some corner and cry it out where no one can see."

"Throw in the Hollow technique you used just now, and it's not hard to deduce that you've got a private dimension."

Rin and Shisui, who had just walked in, stared at Kakashi like he had descended from the heavens.

All that… from just observing?

How terrifying!

Was this… the true strength of Senior Kakashi?

"Ahem. Not important. Obito, go ahead and store Tobi so we can get out of this dump," Kakashi said quickly, feeling their gazes. He unconsciously scratched his nose, trying to steer the conversation elsewhere.

"Senior Silver Fox, can you guess my ability too?"

Shisui asked with interest while Obito got to work.

"Hm, if I had to guess… I'd say one of your eyes lets you alter someone's will," Kakashi replied, though his tone held some uncertainty.

After all, Shisui's awakening moment had shifted from the original timeline, and Kakashi couldn't guarantee if Kotoamatsukami had stayed the same.

But Shisui's expression confirmed it—Senior Kakashi really could read Mangekyō abilities!

…Though neither of them knew just how far the butterfly effect had gone.

Because of Kakashi's influence, Shisui's Mangekyō abilities had also subtly changed.

One eye still retained the powerful Kotoamatsukami: Eternal—capable of rewriting a person's will, albeit with a decade-long cooldown.

Born from his deep desire to redeem Obito.

But the other eye, which was supposed to mirror it, had transformed.

After experiencing Kakashi's self-sacrifice, the will to protect had grown stronger.

Now, it had evolved into an illusion-based offensive ability: Kotoamatsukami: Radiance.

And that, Kakashi couldn't have predicted.

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To be continued...

"Suggest a fanfic idea where the MC is not transmigrated and does not know about the Naruto world, which I can work on. You can also suggest a similar fanfic that I can translate."