Chapter 100: The Hundred Healings Technique! [Bonus Chapter]

After taking the top spot in the eating contest rankings, Shūichi shifted most of his focus to developing a new jutsu alongside Tsunade.

If they could create it this year without using his "Flash of Insight" ability, that would be ideal. Shūichi could then save his once-a-year "Flash of Insight" for other purposes.

For example, it could be used to comprehend the technique inscribed on the Totsuka Blade granted by the Tag Tree.

Or it could aid in studying the Four-Tails' Lava Release or even the Eight-Tails' technique of tail shedding and substitution.

There were countless areas where he needed this ability, but since it could only be used once a year, saving it was crucial.

Sometimes, time was incredibly valuable. Other times, not so much.

Of course, although he was busy with Tsunade's project, he still relied on shadow clones to handle various other ninjutsu training.

Time flew by, and before long, it was December of the 42nd year of Konoha.

Shūichi's vacation ended.

On this particular day, after returning to the ANBU headquarters and waiting for a bit in the locker room, only Sarutobi Shinnosuke and Chihiro showed up. He had a hunch.

Sure enough, the next moment, Sarutobi Shinnosuke said, "Deer and Mind have both withdrawn from ANBU."

Shūichi nodded and asked, "Are there any new recruits coming in?"

Shinnosuke shook his head. "Not for now. The three of us will form a squad and handle the upcoming missions."

Then, he smiled. "But before the year ends, there probably won't be any major tasks, so for now, we'll be acting as guards for the Third Hokage."

Chihiro laughed as well, "I heard you've been busy with experiments and developing new jutsu recently. You can just use a shadow clone for this."

"The Third Hokage rarely leaves the village these days."

Shūichi nodded, "Understood. I'll leave the heavy lifting to Captain and Chihiro-san!"

For him, this was great news.

The development of the new jutsu with Tsunade was at a critical stage. Contributing to this process wasn't just helping Tsunade, but also honing his own talents and gaining valuable experience.

So the new task began. The three of them were stationed at the Hokage's office.

When Hiruzen Sarutobi stayed inside, they were just hanging around, occasionally running errands for him.

When he went out for a casual stroll, they would follow discreetly.

It was a pretty laid-back job!

As a result, Shūichi was "ordered" to slack off. Leaving a shadow clone behind, he took his real body to the Senju residence.

Since Shizune was at Konoha Hospital, only Tsunade was at home.

But Shūichi found her... fast asleep!

Tsunade was slumped over the desk, seemingly having a pleasant dream—she was even drooling.

Ugh~~

Shūichi sat across from her and, after a moment of curiosity, entertained a mischievous thought: Should I poke her cheek with my finger?

The wicked idea flashed through his mind, but he quickly dismissed it.

With Tsunade's temper, she'd probably chase him through the village for a hundred streets.

Shaking his head, Shūichi didn't wake her. Instead, he began tidying up the nearby scrolls and reviewing the notes.

Most of the scrolls contained incomplete jutsu formulas, some written by Tsunade, and others that he had contributed to.

Shūichi reorganized the scrolls, then started sorting his thoughts, pulling out fresh scrolls to work on seals and adjust the formulas.

Two hours passed in the blink of an eye. When Tsunade woke up and saw Shūichi, she was momentarily surprised. "Huh, aren't you supposed to be on a mission?"

"Since it's a pretty easy task, I get to slack off a bit," Shūichi replied with a grin, glancing up at her.

He couldn't help but laugh.

Tsunade, still looking a bit drowsy, had ink marks smeared across her cheek.

It was... kind of cute.

"Lady Tsunade, you've got something... here," Shūichi said, pointing to his own face.

Tsunade wiped her face, blushing a little, but quickly brushed it off. "Stayed up too late last night."

She stood up and went to wash up.

When she returned, fully refreshed, she asked, "Any new ideas?"

Shūichi shook his head with a wry smile, "Lady Tsunade, I may be a genius, but I'm not a god."

"Let's start by going over everything we've done so far."

Tsunade sighed and nodded, then started organizing the scattered scrolls.

Time passed, and before they knew it, it was already noon. Shūichi decided to cook lunch himself, while Tsunade leaned against the doorframe, munching on an apple. "It's looking pretty good!"

Shūichi chuckled, "Of course! I've been honing this skill since I was little."

Tsunade smirked, "You're still just a kid."

"But I'll grow up eventually, Lady Tsunade."

"Yeah, but in front of me, you'll always be a kid."

Their banter continued throughout lunch, and before they knew it, the meal was over.

After cleaning up, the two returned to work.

Over the next two days, they went over their previous progress and then continued advancing step by step.

Before long, 10 days had passed.

On this day, the jutsu formula had finally taken shape, and Tsunade began testing it herself.

She formed a series of hand seals, and as the final seal was completed, the Yin Seal on her forehead activated. The curse marks immediately spread and intertwined, covering her entire body.

Then, with a decisive motion, she released the Yin Seal!

In the next instant, Shūichi sensed an enormous surge of chakra.

To his perception, Tsunade had transformed into a massive reservoir of chakra. However, Tsunade herself frowned slightly. "The chakra flow isn't stable enough, and the control is still too rough."

Shūichi chuckled and replied, "Then we'll just keep controlling it. To get this far already means we've essentially succeeded, doesn't it?"

"Alright, fair enough," Tsunade nodded, still a little dissatisfied. The curse marks on her body faded away as the chakra flowed back into the Yin Seal, sealing itself again.

What followed was a long period of adjustments and tests, refining the jutsu step by step, moving ever closer to the vision that both Shūichi and Tsunade had in mind.

...

On December 24th, in the 42nd year of Konoha.

At the Senju residence, by the fireplace, Shūichi wrote the final stroke, completing the complex jutsu formula.

Shūichi looked up at Tsunade across from him. "Lady Tsunade, how about naming this technique?"

Indeed, just before the new year arrived, the new jutsu was finally perfected.

Tsunade glanced at the jutsu formula on the scroll, nodded, and said, "Let's call it the Hundred Healings Technique."

Shūichi immediately wrote the name of the technique on the scroll.

Then, he pulled out another blank scroll and continued writing.

Tsunade, puzzled, raised an eyebrow after a moment. "You're planning to use three versions of the Hundred Healings Technique?"

"Even if you set up Yin Seals on your forehead, heart, and abdomen, there's no need to use three separate Hundred Healings Techniques, right?"

"Even if the seals are pre-arranged, maintaining them still requires mental focus. That's going to put a lot of strain on your mind."

Shūichi continued writing, smiling as he explained, "We also need to consider the possibility that one of the curse marks might get damaged."

Tsunade huffed. "The core of the Hundred Healings Technique is located in the forehead. If that gets destroyed, you'd already be dead..."

Her voice trailed off as her brow furrowed in thought. "You're trying to ensure that even if your head—or specifically, your brain—is hit, the jutsu can still activate and heal critical brain injuries, even if you lose consciousness."

A look of realization crossed her face. "So, when you suggested adding the Eight Trigrams Seal earlier, this was what you were aiming for?"

It was a well-known fact that if a person dies or loses consciousness, most techniques—like the Shadow Clone Technique—disappear.

But during their development of the Hundred Healings Technique, Shūichi had proposed that the heart and abdomen serve as two additional layers of control, each acting as separate chakra control cores, to ease the burden of controlling the technique and make it easier to manage.

However, if the head were to sustain critical damage, and the user lost consciousness, those two additional control cores would also fail, much like how shadow clones vanish.

But by incorporating the Eight Trigrams Seal, a protective mechanism could be added, allowing these control cores to maintain independent thought processes.

This was the brilliance of sealing techniques!

And also the versatility of chakra itself!

Chakra could carry not only one's thoughts but also one's consciousness, or even soul.

This was why techniques like the Shadow Clone Technique allowed the clones to have independent thoughts and actions.

In the original story, Minato Namikaze sealed remnants of his and Kushina Uzumaki's chakra inside Naruto using the Eight Trigrams Seal. When Naruto was about to release the Nine-Tails, Minato and Kushina appeared to intervene.

Similarly, when Naruto was training in Nine-Tails Chakra Mode, Kushina appeared to assist him.

Sealing techniques had limitless potential!

...

Seeing that Tsunade understood, Shūichi smiled. "Although we don't yet know what kind of advanced healing jutsu this could lead to, at the very least, it could enable regeneration without requiring hand seals."

"If the brain sustains serious damage and consciousness is lost, as long as healing begins before the brain cells die en masse, it could potentially bring someone back from the brink of death."

"All three cores would have to be destroyed for us to truly lose the ability to heal."

"Though it's not perfect, we can now say that both the head and the heart—two of the body's most vulnerable and lethal weak points—are no longer as deadly."

Tsunade's expression turned serious as she nodded, feeling the weight of the responsibility. "It looks like I'll need to devote my full attention to developing a healing jutsu that's fast enough to keep up with this concept. Otherwise, this 'brat' will outdo me."

She realized that the next step would be creating a healing technique with rapid regeneration speed to match Shūichi's design.

Otherwise, the three healing cores would merely act as chakra storage points without true function.

With this thought, Tsunade was reminded of her grandfather, the First Hokage, Hashirama Senju.

"Grandfather's ability to heal without hand seals... I may not be able to reach that level, but I can't be too far off!"

...

Watching Tsunade's serious demeanor, Shūichi laughed and said, "No need to put so much pressure on yourself, Lady Tsunade. We still have plenty of time."

While Tsunade's version of the Hundred Healings Technique would assist with healing, maintaining her appearance, and extending her lifespan, Shūichi's version could assist in combat.

Finally, he could unlock the Fire Release Chakra Mode!

...

With the new jutsu formula complete, Shūichi spread the scroll on the ground, then removed his forehead protector and shirt, revealing his toned upper body.

Sitting cross-legged on the scroll, he clasped his hands together, focusing as Tsunade watched.

The next moment, the formula on the scroll came to life. Tadpole-like symbols rapidly climbed onto Shūichi's body, gathering at his forehead, heart, and abdomen, integrating with the pre-arranged Yin Seal and Eight Trigrams Seal.

When the process was complete, Shūichi softly uttered, "Open!"

Instantly, under Tsunade's gaze, Shūichi's previously smooth forehead began to glow with a blue light.

Unlike Tsunade's diamond-shaped Yin Seal, this light was circular—clearly tied to the Eight Trigrams Seal.

But what surprised Tsunade the most was that, although she sensed Shūichi activating the Hundred Healings Technique, no curse marks appeared on his body.

Yet, his chakra quickly filled his head and became visible on the surface, bathing his entire head in a blue glow.

"So this is the benefit of using the Eight Trigrams Seal? Maximum control over chakra."

"No, wait!" Tsunade's eyes narrowed. "This is... Fire Release chakra!"

As she watched, the chakra around Shūichi's head retracted back to his forehead, and the blue glow there faded away.

But then, the same blue glow appeared at Shūichi's heart, and the chakra spread out from there, covering his neck, chest, and arms.

Tsunade silently noted, "Each core can be activated individually, like Yin Healing Wound Destruction. This method would indeed conserve chakra and prevent over-healing."

Shūichi then completed the trial of the Hundred Healings Technique at the heart core.

Next was the abdomen, with the technique enveloping his lower body, including his legs and feet.

In this way, he divided his body into three zones.

Though it was a bit cumbersome, it had plenty of advantages.

Moreover, since the formula was pre-arranged, activating it would only take a single thought or hand seal, wasting no time.

Of course, each of the three cores could also cover the entire body, not just a single zone.

Everything was perfect. Shūichi stood up and put his shirt back on.

As for the forehead protector, after some thought, he decided not to tie it back on his forehead, but around his neck instead.

Tsunade asked, "Hey, you're planning to use the Hundred Healings Technique for something else, aren't you?"

(End of Chapter)

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