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Thud, thud, thud...

The Fushan squad gathered in one spot. Hideki practiced his Fire Release, and Haku practiced his own sensory ninjutsu, but soon, both were drawn to the actions of Fushan and Suifeng.

Fushan held a wooden club in his hand, striking Suifeng without a hint of mercy.

Though the rhythm of the blows was not fast, the force behind them was significant. Suifeng did not dodge or evade; he merely performed basic defensive maneuvers, sometimes even intentionally leaning into Fushan's club.

"Teacher Fushan, what are you two doing? Practicing damage resistance?!" Haku asked curiously.

"Oh, no. Suifeng wants to develop a new taijutsu, and he's already made progress!" Fushan said, his hand never stopping as the club landed with a rhythmic thwack against Suifeng's body.

"╰(°▽°)╯, A new taijutsu developed by Suifeng himself? That's amazing! He's still so young, and he can already create his own techniques!" Haku instantly transformed into a fan-girl—no, a fan-sister.

"He calls this taijutsu Iron Body. It involves tensing the muscles of the body instantly to make them as hard as iron, granting powerful defensive capabilities. He claimed it was specifically to deal with Kakashi, but when he actually met Kakashi, he ended up strapping real iron blocks to his body. So, I highly suspect he was lying to me before!"

Haku:

Hideki: (￢_￢)!

Developing a taijutsu called Iron Body, only to strap actual iron blocks to his body during a duel!!

That is just too...

"I couldn't help it! Developing a new taijutsu isn't easy. I only had a little over a month; how could I possibly succeed and apply it to actual combat? Do you think I'm the Sage of Six Paths?" Suifeng took a heavy blow to the waist and complained indignantly.

"Bang!"

"Hey, I said... wait...!"

The club struck even harder, and Suifeng's cries grew louder, but suddenly, he reached out his hand and let out a strange yelp, "Wait, wait! I—I—I think I've got it!"

"(⊙_⊙)?"

"Eh... you've got it? What's going on?!"

He's got it? What's going on?!

The three of them were baffled, and Fushan stopped the club he was using to torment Suifeng.

"Yes, yes, that's the feeling!"

Suifeng stood where he was, striking a strange pose, his eyes half-closed as if sensing something.

"Exactly, just like that! Just now, when I was talking, my muscles vibrated uncontrollably, and then, the circulation of chakra, the flow of blood...!"

Suifeng's expression froze. Just a moment ago, while chatting and taking hits, perhaps due to the talking or the excitement, the muscles in his waist—the ones being struck—had vibrated involuntarily. In that instant of vibration, the chakra within his body had suddenly merged with his rapidly flowing blood, producing a trace of searing heat.

Although it was only a trace, he had managed to capture it.

"Vibration! The adjustment and vibration of the muscles!!"

He had found his inspiration.

He possessed the "brain-hole" cheat, and he had plenty of imagination, but imagination was just that. What he had seen in the anime from his past life were plot points, not secret manuals. One had to realize that things like the Six Powers, Haki, or Nen were all works of fantasy. An anime wouldn't teach you the step-by-step training methods, and even if it did, different dimensions would cause different changes.

Just as his Zanpakuto had adapted to the laws of this world and integrated into it, a taijutsu like the Six Powers also needed to adapt to the changes of this world to truly take root.

What was the biggest difference between this world and the world of One Piece?

Chakra. Chakra was the differentiator, wasn't it?

The power system of this world was chakra, not Haki. To master the Six Powers, he had to take this factor into account, even if the Six Powers were purely physical techniques!

Without knowing the specific training methods and separated by a dimensional wall, groping for the Six Powers was nothing more than a game of chance.

He had had some leads before, but he hadn't grasped the key, which was why the results were poor. But just now, taking that hit, his muscles had vibrated, instantly driving his blood and chakra to form the true effect of Iron Body.

So, was this the true way to unlock Iron Body in this world?

"Teacher, I have a new idea for Iron Body. I'd like to request a few days off!"

"Granted," Fushan said, looking at Suifeng deeply. "Is a week enough?!"

"Just about!"

Suifeng nodded. During this time, he hadn't just been training with the Security Force; he had also been following Wako to learn medical ninjutsu, giving him a deeper understanding of the human body. Combined with this accidental success, a week should be enough for him to research Iron Body to completion.

...I am a separator...

Five days later, Suifeng's residence.

"I was actually just trying to research Iron Body. What is going on here?!"

Looking at the basin-sized, black-red crater emitting white mist in front of him, and feeling the changes within his own body, his expression became increasingly bizarre.

Kekkei Genkai: Lava Release.

He possessed Fire, Earth, and Lightning chakra natures, making his talent above average, but he was only a genin—a genin who had just graduated. He never would have thought to research chakra nature transformation, nor did he have the inclination.

He had only been researching Iron Body, so how did he end up with the Lava Release Kekkei Genkai as a bonus?

Yes, the high-speed vibration of his muscles and the massive, rapid movement of his blood had caused his chakra and blood to undergo a chemical reaction. After successfully researching Iron Body, he clearly felt a strange change in his body.

Specifically, he felt his body become significantly stronger, elevated to a new level. The chakra he refined was not only more abundant, but its quality seemed to have changed as well. So, when he tried a Great Fireball technique, the result was not pure flame, but magma.

Combining this with the changes in his body, how could he not realize that his internal Fire and Earth chakra natures had fused, forming the Lava Release Kekkei Genkai—and it was the source of the Lava Release at that.

The newly born chakra nourished his body, significantly boosting his physical fitness, while his chakra reserves also surged, reaching the level of a chunin. Consequently, his Sharingan naturally evolved into a two-tomoe state.

Is this a buy-one-get-two deal?

No, strictly speaking, it's just buy-one-get-one; the Sharingan doesn't count!

Ever since he obtained the Red Ghost, he had never once concerned himself with the evolution of the Sharingan.

The question now was whether he should inform the clan that he had acquired yet another Kekkei Genkai!

Of course he had to tell them!

This wasn't even something that required thought; only by informing the clan could he prove just how outstanding he was, secure a greater share of the clan's resources, and receive more attention.

Although Lava Release was a Kekkei Genkai, compared to the Sharingan and the Byakugan, it wasn't actually all that powerful—it was merely a tier above the average ninja.

Wait, come to think of it, my Zanpakuto Red Ghost seems capable of evolving Kekkei Genkai!!!

Suddenly, this thought flashed through his mind.

Could it be that I've become the protagonist?!

PS: 1. Seeking recommendations and follows.

2. One of the insights Little Whale has gained from reading fanfiction: inconsistent power systems and jarring crossovers feel strange, so I will start by integrating taijutsu into this book!

3. From now on, every time Little Whale thinks of an insight, I will write a sentence to warn myself not to make the same mistakes!