Konoha's Hextech Ninja

Tsunade is already the strongest medical ninjutsu genius in Konoha's history.

It takes her a week to learn even a B-rank medical ninjutsu.

This is based on the premise that she already has a certain foundation in medical ninjutsu.

Is Yagami Yoruichi, who has absolutely no prior knowledge, really going to master the 'Regeneration Technique' in just one afternoon?

What's the difference between this 'test' and a direct rejection?

"I only agreed to give him a chance." Tsunade remained unmoved and insisted, "My disciples are judged by me! You and Uncle Torifu both say he is a once-in-a-century super genius, so he naturally has to demonstrate the level of a super genius. Otherwise, why should I make an exception and accept him as a disciple?"

Seeing Tsunade's attitude and combining it with information from the original work, Yagami Yoruichi knew that Tsunade had no intention of taking on a disciple at all. She was only reluctant to refuse directly because of Maruboshi Kosuke's face, so she chose to set this theoretically impossible 'test'.

If she continued talking, Tsunade wouldn't be able to change her mind.

But should we just give up like this?

That's not like Yoruichi Yagami's personality.

"Lady Tsunade," Yagami Yoru glanced at the scroll a few times and asked, "If I have any questions while learning this ninjutsu, may I ask you for guidance?"

Upon hearing Yagami Yoruichi's words, Tsunade couldn't help but scrutinize her, thinking to herself that this child had a good attitude.

“Yes, but only before sunset today,” Tsunade said. “If you can learn it before sunset, then consider this ninjutsu a gift from me. If you can’t learn it, you won’t be allowed to learn it again in the future.”

"As for materials for practicing ninjutsu, there are fish in the water tank in the kitchen," Tsunade added.

Although he didn't intend to take on any apprentices, he set a test that was theoretically impossible to complete.

But Tsunade wouldn't give Maruboshi Kosuke a chance to cause trouble; she had everything prepared.

"Thank you, Lady Tsunade," Yagami Yoruichi said, sitting back on the sofa and carefully examining the ninjutsu scroll in his hand.

'Regeneration Technique' is a weakened version, or a poor version, of the A-rank ninjutsu 'Healing and Regeneration Technique'.

The effect is to stimulate cells with Yang Release chakra, thereby accelerating the healing speed of wounds.

However, its effect is much weaker than the 'Palm Immortal Technique', and it is generally only used as a supplementary technique.

The ninjutsu scroll contains detailed information, including techniques for using Yang Release chakra, how to use chakra to stimulate cell healing, and so on.

The principle is not complicated; the real difficulty lies in the extremely high level of chakra control required, which needs to be precise down to the micrometer level. This is something that even many Jonin cannot achieve.

"Micrometer-level control... I wonder if I can do it now." Yagami Yoruichi tried a few times and successfully converted Yang Release chakra with 'healing' properties. She got up and went to the kitchen to experiment with a fish.

Chapter 47: Incredibly Difficult Medical Ninjutsu

Knife up and down.

A deep, bone-revealing wound was then cut open along the back of the fish on the cutting board.

A green light emanated from Yagami Yoruichi's hand, a manifestation of Yang Release chakra gathered to its maximum.

"Regeneration Technique!"

Yagami Yoruichi placed her palm on the fish's wound, attempting to stimulate the cells in the wound with Yang Release chakra to heal it.

The effect was very obvious, but it was different from what Yagami Yoruichi had guessed.

Stimulated by the Yang Release chakra, the cells at the wound site proliferated wildly, quickly growing into a large cluster of irregular sarcomas.

Clearly, this ninjutsu failed.

"Was it too stimulating?" Yagami Yoruichi wondered thoughtfully.

The first attempt to release the weapon failed, just as Yagami Yoruichi had anticipated.

Medical ninjutsu is difficult to begin with, let alone B-rank ninjutsu, which is considered quite difficult even among medical ninjutsu.

It would be outrageous if it succeeded on the first try.

But to say that 'stimulating wound healing' turns into 'growing a whole bunch of tumors' is a huge deviation.

"It's probably because too much chakra was inputted. Let's try reducing the chakra."

Yagami Yoruichi tossed the nearly dead fish into the trash can, grabbed another fish, skillfully cut open the wound, and then activated her Yang Release chakra to try to stimulate the cells and speed up the healing process.

This time, no large, terrifying-looking tumors grew out, but the wound showed no signs of regrowth.

"If too much chakra is inputted, the cells will divide excessively, resulting in a bunch of strange tumors. If too little chakra is inputted, it won't stimulate the cells to divide faster, thus failing to promote rapid wound healing. Finding the right balance seems difficult..."

Yagami Yoruichi had already understood the difficulty of this ninjutsu through the records in the ninjutsu scroll.

Having experienced two failures, a little analysis reveals the key issue.

Knowing something is one thing, but there's still a significant gap between knowing it and actually mastering it.

It's commonly said that you can understand it in your mind, but you haven't learned it in your hands yet.

With each attempt and each failure, a fish dies with its eyes wide open in disbelief.

Moreover, most of those fish died in bizarre ways, making one feel as if they had been subjected to mental pollution, and they had no value as food, so they had to be thrown away.

Fortunately, Tsunade had clearly anticipated this and prepared a large tank of fish, enough for Yoruichi Yagami to use for practice.

Time passed, and suddenly, Yagami Yoruichi smelled a fragrance.

Turning my head, I saw that Kosuke Maruhoshi had just opened the lid of a ceramic pot and was stirring the chicken soup inside with a spoon.

The chicken soup emitted an enticing aroma, instantly making Yagami Yoruichi feel a surge of hunger.

"Let's take a break and go out to get something to eat," Maruboshi Kosuke said with a smile. "This is Tsunade's favorite chicken soup recipe, which I learned from another lady."

Whether it was out of interest or for some other reason, Kosuke Maruhoshi really enjoyed studying cooking.

Even when going on missions, he likes to carry a large iron pot on his back.

Yagami Yoruichi was also fortunate enough to taste the food made by Maruhoshi Kosuke a few times, and it was indeed very appetizing and delicious.

Upon hearing Maruhoshi Kosuke's words, Yagami Yoruichi quickly put down the fish, washed his hands, and ladled out several bowls of chicken soup to take to the restaurant.

"Lady Tsunade, Shizune, dinner's ready," Yagami Yoruichi called out.

"Uncle Kosuke's cooking skills are truly amazing, almost on par with Grandma's." Tsunade looked nostalgic as she picked up a bowl of chicken soup, took small sips, and showed a satisfied expression.

grandmother?

Tsunade's grandmother, wasn't that Mito Uzumaki, the first Nine-Tails Jinchuriki?

At this time, it is unknown whether the Nine-Tails has already transferred into Kushina Uzumaki's body.

Based on the Shippuden storyline, it's speculated that Kushina Uzumaki was still in school when she became the Nine-Tails Jinchuriki.

However, in the later updated "Minato Chronicles", Kushina Uzumaki was kidnapped by the Cloud Village ninja after graduating. She was rescued by Minato Namikaze and it took several years before she became the Nine-Tails Jinchuriki. According to this timeline, it seems that there were still a few years left. In other words, Mito Uzumaki may not have died yet at this time.

However, given Mito Uzumaki's age, even if she hadn't transferred the Nine-Tails yet, she would probably be very old and unable to move around much.

While Yagami Yoruichi was pondering this in his heart, he remained outwardly calm and pretended not to have heard anything.

Maruboshi Kosuke looked at Tsunade and said, "Tsunade, if you take Yoruichi as your disciple, I'll make you chicken soup often from now on, how about that?"

Upon hearing Maruboshi Kosuke's words, Tsunade's face showed a hint of interest, but she quickly shook her head and said, "If I want chicken soup, I can go to Grandma! To be my disciple, you have to rely on your own abilities. Don't expect me to lower my standards!"

Upon hearing this, Yagami Yoruichi immediately understood that Uzumaki Mito was indeed still alive.

However, when it comes to matters involving high-ranking figures in Konoha, Yagami Yoruichi would simply pretend not to hear them.

Avoid getting involved in things that don't concern you until you have sufficient power.

When it comes to the Nine-Tails Jinchuriki, that's a big deal.

With my current strength, let alone getting involved, even knowing too much would be dangerous.

"Lady Tsunade," Yagami Yoruichi began, changing the subject, "When I use the 'Regeneration Technique,' I feel I can precisely stimulate cell growth, but it's difficult to precisely control the newly generated cells to heal wounds. Is there anything I should be careful about?"

"Oh? It can precisely stimulate cell growth? You've only just started learning, and you're already this good?" Tsunade looked surprised.

After a moment of blankness, she said, "After we finish eating, you demonstrate it for me. I need to see it to know where the problem is."

"Yes, Lady Tsunade," Yagami Yoruichi replied, lowering his head to concentrate on his meal.

After the meal, Tsunade and Yoruichi Yagami went to the kitchen.

"Now let's demonstrate." Tsunade flicked her finger, and a burst of chakra shot into the basin, accurately stunning a fish and sending it flying onto the cutting board.

Yagami Yoruichi took out her sword and made a cut on the fish's body. Then she activated the 'Regeneration Technique' and used Yang Release chakra to stimulate the regeneration of cells at the fish's wound.

Tiny granulation tissue grew from the wound, but instead of healing it, it piled up, stretching the wound further and tearing it apart.

"Of course you can't do it this way. Before using the Regeneration Technique, you have to close the wound," Tsunade said irritably. "It's like welding two steel plates together. If you separate the two plates, how can you weld them together?"

Upon hearing Tsunade's analogy, Yagami Yoruichi immediately realized where the problem lay, and slapped her forehead in frustration: "How could I have overlooked this problem! Thank you, Lady Tsunade, I'll try again."

With that, Yagami Yoruichi took a new fish and continued trying.

Chapter 48 The Weapon of Causality: Always Losing at Gambling

Although Tsunade had already pointed out the key points of Yoruichi Yagami's 'Regeneration Technique'.

However, truly mastering this ninjutsu is still a very difficult thing.

Of all the ninjutsu that Yagami Yoruichi had learned, only the 'Regeneration Technique' required an abnormally high level of chakra control and a high degree of concentration. Any slight mistake would lead to the failure of the ninjutsu.

Yoruichi Yagami believed that she already had a high level of control over chakra.

However, achieving control down to the 'micrometer level' is still an extremely demanding requirement.

To think that this was merely a B-rank medical ninjutsu, not even the most difficult one.

Yoruichi Yagami couldn't help but wonder, just how insane are the requirements for chakra control for A-rank techniques like "Healing and Regeneration Technique" and "Hand Technique"?

What about S-rank techniques like the Hundred Healings Technique and Creation Regeneration?

Does this mean we need to achieve nanometer-level, or even more precise, chakra control accuracy?

Yagami Yoruichi was only curious for a moment before quickly clearing his mind and focusing on practicing the 'Regeneration Technique'.

Inside the living room, Kosuke Maruboshi, Tsunade, and Shizune sat around the tea table.

"It's almost time."

Tsunade glanced at the sky outside.

Winter was almost over, and it could barely be considered early spring, but it still got dark much earlier than in summer.