With the Eight Gates open, the body instantly broke free from all constraints, like an unstoppable beast unleashed from floodwaters or a raging monster breaking free.
The chakra within him felt limitless, as if there were no end to it.
Yet this very boundless power was the primary cause of the physical damage.
Satori Hyūga was thinking.
What if he used a sealing technique to reduce the intensity of the Eight Gates after opening them—would that lessen the damage to his body?
Like chaining a fierce beast with iron restraints,
Or placing restraints on a high-speed engine to temper its output and prevent overheating.
In theory, the principles were quite comparable.
"This could actually work... No—I have to try it."
As soon as the idea formed, Satori immediately gained motivation and direction.
The Eight Gates technique enhanced every aspect of the human body.
Whether it was speed, strength, nerve reaction, adaptability, stamina, chakra, or resistance to impact—everything experienced a massive surge.
If not for its high fatality rate, lengthy training requirements, and unavoidable drawbacks, this technique could easily ascend from a B-rank to an S-rank jutsu.
Because of these major downsides, most people overlooked it when choosing their techniques.
No more talk—time to act. Satori immediately began his experiments.
His test subject, of course, was Might Guy.
Originally, Satori had wanted to send Guy out delivering packages, but now he'd be serving as a lab rat instead.
Inside the laboratory.
Might Guy lay on a clean, white bed, his thick eyebrows knitted in excitement.
"Boss, you really think you can develop a way to remove the drawbacks of the Eight Gates?"
"I thought the Eight Gates couldn't be refined any further. If you can eliminate its disadvantages, it'll truly be incredible news."
As he spoke, Might Guy's voice trembled slightly.
The Eight Gates was a taijutsu passed down through his bloodline.
It was said to have been inspired by fragments of an ancient forbidden ninjutsu.
By the time it reached his generation, the Eight Gates technique had already reached near perfection.
Through relentless effort and training, one could successfully open each of the Eight Gates within the human body.
However, simultaneously activating all Eight Gates overwhelmed the body. The violent surge of power would tear the cells apart.
This was exactly why Might Guy couldn't use the Eight Gates in everyday life.
If he could constantly keep the gates open, he wouldn't still be stuck playing the role of a lowly Genin, barely getting by on inconsistent meals.
"Might Guy, you must believe in your boss's wisdom," Satori said.
"I've already figured out how to solve the Eight Gates' drawbacks using a sealing technique. Just watch me succeed."
Upon hearing "sealing technique," Might Guy's eyes lit up.
"I've heard about sealing techniques before—they're advanced knowledge only accessible to prodigious ninja. Unfortunately, my talent wasn't good enough, so I never learned any."
"If we use a sealing technique, maybe there's a real chance."
Might Guy deeply believed in the legendary reputation surrounding sealing arts.
And now, he held even greater faith in Satori, who proposed this method.
He settled back onto the bed, determination burning brightly in his eyes—like a warrior charging into battle.
"Boss! Let's do this! Let's charge into this together—our youth and passion await!"
Satori sweatdropped.
His style is always out of sync with everyone else's.
"Let's unleash our youth—strip first!"
"Compression wraps? No way, Boss! I'm not into that!"
"What were you thinking? Sealing techniques go on the skin!"
"Ah, I misunderstood..."
Might Guy squirmed but finally peeled off his green spandex suit.
Don't let Might Guy's plain look fool you—he may look like a bamboo stick, but over a decade of relentless training had hardened every muscle, inside and out.
However, during gate-opening, some fat always burned off, making him seem thinner than he actually was.
Satori Hyūga pinched Guy's taut muscles and began inscribing complex patterns onto his skin with special ink.
One by one, those markings transformed Might Guy into a heavily inked giant.
Since the Eight Gates technique starts at the head, Satori shaved most of Guy's hair.
Thankfully, Guy didn't care much about his hairdo.
As long as his suit remained green, his youth would keep burning.
Ring-shaped symbols were etched one after another across his forehead, continuing all the way down to his navel and heart region.
"Alright, Might Guy. Give it a try now."
Satori patted Guy, signaling him to open one of the Eight Gates.
"This is done already?"
With a swift flip like a fish jumping from water, Guy sprang up from the bed.
[Eight Gates: Opening Gate — Activate!]
Might Guy roared aloud. His whole body tensed, muscles bulging, veins popping.
No matter how hard he tried, nothing happened—like someone desperately constipated.
Looking pleadingly at Satori, Guy muttered, "Boss… Did you mess up the sealing technique?"
He felt like a regular guy who'd suddenly been hit with brutal constipation—unable to do anything worthwhile.
The Eight Gates felt like they were locked by an invisible force, refusing to open.
Satori scratched his head and shut off his Byakugan.
Honestly, his grasp of sealing techniques wasn't solid—after all, he'd only just started learning from Kushina.
He'd barely scratched the basics.
Now in actual practice, he truly felt the limits of his ability.
As Guy attempted to activate the Eight Gates, Satori realized his own mistake.
His sealing technique had accidentally sealed several meridians and acupoints associated with opening the gate.
That's why Guy couldn't activate even one gate correctly.
"Don't worry. I'll wipe it off and redraw everything."
Satori asked Guy to lie back down and serve once more as his test subject.
After all, Guy was rather straightforward and trusting.
Plus, Satori paid way too well to say no.
With a kid on the way, Guy definitely needed the extra cash for baby formula.
"If we erase this part and shift it here, maybe that'll work."
"Why's it still not working? I must've messed up somehow."
"How come it's still wrong? What went wrong exactly?"
...
After countless tries, Satori finally got the initial version of the Sealing Technique right.
This time, Might Guy successfully activated the Eight Gates.
The results were underwhelming. By the time he reached the Fourth Gate, he could no longer maintain the seal.
That wasn't the outcome Satori Hyūga had hoped for.
With his limited knowledge, completing this jutsu on his own was an enormous challenge.
It forced him to make a choice he never thought he would—going against his ancestors' legacy:
[Seeking Outside Help.]
He brought Kushina and Minato Namikaze into the laboratory to serve as his advisors.
After all, Kushina hailed from Whirlpool Country and was proficient in various sealing techniques—from basic to advanced—with a deep and comprehensive knowledge of sealing arts.
In their discussions, Satori was also able to pick up some advanced techniques,
such as the Five Elements Seal, [Diamond Seal], Four Symbols Seal, Contract Seal, and more.
And Minato, who would later become a master of sealing techniques himself, frequently offered valuable insights.
With their help, combined with the enhanced detailed observations of the Byakugan,
Satori's mastery of sealing techniques advanced significantly.
He eventually succeeded in developing sealing methods specifically tailored for the Eight Gates state.
Finally, after great effort, Satori created the [Nine-Binding Seal].
A nine-layered seal that bound nine key points on the human body, designed to contain the explosive chakra unleashed after opening the gates.
Though it couldn't fully suppress or bind the chakra, it greatly reduced the damage inflicted upon the body.
It both restrained and balanced the power output—reducing the overall potency of the Eight Gates Technique by nearly half.
However, even at half strength, the improvement in power was still sufficient for an average ninja to manage effectively.
Most importantly, unlike the original version, users wouldn't perish immediately afterward.
But reaching this stage had pushed Satori to his physical and mental limits.
To go any further, he knew he would need to recruit yet another external expert.
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