Konoha's Hextech Ninja

"The teacher called me, I'll be right back." Yagami Yoruichi said goodbye to Yuhi Kurenai, walked out of the classroom, and approached Imai Nobuyuki: "Teacher, is there anything I can help you with?"

"I told you before, if you get first place in this monthly exam, I'll teach you a ninjutsu," Nobuyuki Imai said with a smile. "Don't rush off after school, I'll teach you today."

Although Yagami Yoruichi had some suspicions, she was still very happy when she heard these words and quickly agreed.

Kurenai was a little unhappy when she heard that Yoruichi Yagami was going to stay at school, but she was quickly coaxed and persuaded by Yoruichi, and left school to go home alone.

Yagami Yoruichi followed Imai Nobuyuki to a training ground by a small river.

"Water Release ninjutsu is best used in an environment with water, as it can save a lot of chakra. In a completely dry environment, either chakra consumption will increase or the power will decrease drastically."

Nobuyuki Imai explained the principle of 'Water Release: Water Chaos Wave' in a simple way: "Water Release: Water Chaos Wave is an offensive ninjutsu. It involves spraying a high-pressure stream of water from the mouth to impact the enemy. Its advanced form is 'Water Release: Water Severing Wave' developed by the Second Hokage. However, Water Severing Wave is too difficult. Water Chaos Wave is much simpler. If used properly, its power is also quite remarkable."

"The hand seal sequence for Water Release: Water Chaos Wave is Chen-Chou-Mao. When casting it, you need to convert your chakra into water attribute, gather it in your mouth, compress it, and then spray it out." Imai Nobuyuki quickly formed the hand seals, and a high-pressure stream of water shot out from his mouth, snapping a large tree by the river.

After the demonstration, Nobuyuki Imai said to Yoruichi Yagami, "You try it first."

Yagami Yoruichi nodded and, following the instructions of Imai Nobuyuki, mobilized chakra through hand seals, changed its nature, and compressed it in his mouth.

"Chen-Chou-Mao...Water Release: Water Chaos Waves!"

Yoruichi Yagami attempted to convert the compressed chakra in her mouth into a high-pressure water jet, but only managed to spray out a small water column about the thickness of a finger, which had no destructive power whatsoever.

Upon seeing this, Yagami Yoruichi was taken aback at first, then immediately showed a look of frustration, and couldn't help but doubt whether she had any talent for ninjutsu.

"Hahaha!" Imai Nobuyuki laughed heartily, comforting him, "Don't underestimate Water Wave just because it's only a C-rank ninjutsu. It's not that easy to learn. It took me a month to master it. Don't rush, take your time. You had a slight problem converting chakra earlier, it should be like this..."

Nobuyuki Imai patiently instructed Yoruichi Yagami.

After several attempts, Yagami Yoruichi finally mastered the correct method of 'Water Release: Water Chaos Wave' and was able to spray out a high-pressure water jet.

But it only looks 'similar'.

It's still a long way from having sufficient combat power.

"The process is mostly fine. Next, you need to continue to improve your proficiency." Nobuyuki Imai nodded in satisfaction and said, "That's enough for today. Just practice more in the future. If you have any questions, feel free to ask me."

"Thank you, teacher," Yagami Yoruichi said quickly.

"No need to thank me. It was the Hokage's approval that allowed me to teach you ninjutsu." Imai Nobuyuki explained how the Hokage had approved him to teach Yagami Yoruichi ninjutsu.

Yagami Yoruichi was taken aback upon hearing this. She hadn't expected that in Konoha, teaching someone ninjutsu required the Hokage's approval.

With such strict management policies, it's no wonder that ordinary civilian ninjas can't learn any ninjutsu and can only fight using taijutsu and shuriken.

"No matter what, I still want to thank you, teacher." Yagami Yoruichi said earnestly, "If it weren't for your willingness to teach me, I wouldn't have had the chance to learn this ninjutsu."

Compared to the Rasengan, which relies entirely on 'self-study' and cannot be used openly and legitimately.

To be precise, the 'Water Release: Water Chaos Wave' taught by Nobuyuki Imai was the first ninjutsu that Yoruichi Yagami could use openly and without any hidden dangers.

"You're still young, don't practice too many times to avoid injury." Nobuyuki Imai didn't respond to Yoruichi Yagami's words, gave a few reminders, and then said, "It's already late, let's call it a day."

Chapter 15 Ideas for Improving Ninjutsu

"Water Release: Water Chaos Wave!"

A high-pressure jet of water shot out from Yagami Yoru's mouth, snapping a large tree several meters away in half.

"It's finally done."

Yagami Yoruichi was overjoyed.

After spending an entire night, I finally mastered the ninjutsu 'Water Release: Water Chaos Wave', reaching a level where it could be used in actual combat.

This speed is, of course, far inferior to that of a genius like Itachi Uchiha, who could learn the Great Fireball Technique with just a glance.

But compared to the average ninja, it's already considered very fast.

Even a top-tier ninja like Nobuyuki Imai took a full month to learn this C-rank ninjutsu.

Of course, the main reason she was able to learn so quickly was because Yoruichi Yagami had a large enough amount of chakra to support high-intensity training.

"A single water ripple has negligible effect on my chakra."

Yagami Yoruichi opened the system panel and took a look.

The standard 'Water Rumble Wave' consumes 50 chakra points.

With Yagami Yoruichi's current chakra limit of nearly 1200 points, she can use it sixty times.

However, simply releasing the product more often is not very meaningful.

With Yagami Yoruichi's current skill level, casting 'Water Release: Water Chaos Wave' requires approximately two seconds of preparation time.

Ninjas are all very fast, and to create a two-second gap in actual combat requires an extremely strong grasp of the battle situation.

Alternatively, we could try to find a way to speed up the casting of ninjutsu.

For example, by increasing the speed of hand seals, increasing chakra control, and so on.

This kind of training was naturally included in Yoruichi Yagami's plan.

The former, practicing hand seals, is a long-term endeavor.

As for the latter, Yagami Yoru had already completed classic training such as tree climbing and treading water, and he had not yet obtained more advanced training methods.

Perhaps I could also ask Mr. Nobuyuki Imai about the nature transformation of Water Release chakra and the advanced training methods for chakra control?

C-rank Water Release doesn't require high-level nature transformation, so even someone like Yoruichi Yagami with little prior experience can learn it with some time.

However, to further enhance this ninjutsu, it is definitely necessary to involve nature transformation.

In addition to these basic training methods, we also need to find ways to enhance the power of ninjutsu.

Yagami Yoruichi had two thoughts on this.

Either increase the amount of chakra input, investing more chakra in a single ninjutsu to enhance its scale.

The most classic example is the 'Fire Release: Great Fire Annihilation' used by Madara Uchiha against the Allied Shinobi Forces in the original work, which greatly increased the scale of the ninjutsu by increasing the amount of chakra.

The individual power may not change much, but the coverage area will be increased to a terrifying level, turning single-target or small-area ninjutsu into a super-large-area group attack ninjutsu.

Another approach is to increase the power of the 'compressed water column' to its maximum, which would be to develop in the direction of the ninjutsu 'Water Release: Water Severing Wave'.

Considering her unfamiliarity with chakra nature transformation, Yagami Yoruichi decided to try the former first, which was to increase the scale of 'Water Release: Water Chaos Wave' by increasing the amount of chakra injected.

After clarifying her thoughts, Yagami Yoruichi formed hand seals again.

Chen-Chou-Mao.

A large amount of chakra was converted into water-attribute energy, gathered and compressed in the mouth, and then spat out all at once.

Water Release: Water Chaos Waves!

A large amount of water poured out and rushed forward.

A small area in front was completely covered by water, turning into a swamp.

Yagami Yoruichi's chakra was also severely depleted, with more than half of it being used up in just a few seconds.

"Six hundred chakra points are equivalent to the chakra amount of 12 standard Water Rumble Waves, and the actual effect is roughly equivalent to seven or eight Water Rumble Waves..."

Yoruichi Yagami frowned slightly, puzzled. "The power and scale have indeed increased, but the increase is not as great as I imagined. Is it because simply increasing the amount of chakra injected is not working? Or is there something wrong with it?"

Having used up more than half of her chakra in one go, even though Yagami Yoruichi had a large amount of chakra, she still felt a little tired.

Instead of continuing training, Yoruichi Yagami found a clean spot to sit down and rest, pondering the process of releasing 'Water Release: Water Chaos Wave'.

"The process of chakra injection and conversion is fine, but when it is released, the power and scale are much smaller than expected. If I'm not mistaken, it seems that a lot of chakra is wasted in the process of converting into water..."

"Is it a lack of chakra control? Or insufficient training in nature transformation?"

A question arose in Yagami Yoruichi's mind. She secretly noted it down, planning to ask Imai Nobuyuki about it when she went to school the next day.

A Chunin teacher might not have a high skill ceiling, but for Yoruichi Yagami now, he could answer most of her questions.

Lost in thought, Yagami Yoruichi didn't notice a figure passing by in the distance. When the figure saw Yagami Yoruichi, it suddenly stopped in its tracks.

"Yorichi Yagami?"

Kakashi Hatake looked at the training ground, now a mess from the impact of the water, and pondered, "Water Release ninjutsu? With such a wide range, could my Earth Release block it?"

"What are you looking at, Kakashi?" Hatake Sakumo noticed his son's gaze and looked in the direction of Yagami Yoruichi. He immediately understood: "It seems that your classmate is quite talented in ninjutsu. You have a good opponent now, Kakashi."

"I will beat him." Kakashi Hatake said expressionlessly, his tone filled with strong confidence and pride.

“That’s true, but it’s time to eat now. We’ve been training for so long, we can’t not eat properly!” Hatake Sakumo laughed heartily, pulling his son away as he walked, saying, “How about barbecue today? The Akimichi family’s barbecue is absolutely amazing.”

The two figures gradually disappeared into the distance, and Yagami Yoruichi didn't even notice their appearance.

After pondering the issue of ninjutsu for a while, Yagami Yoruichi quickly left.

The next day.

Yagami Yoruichi approached Imai Nobuyuki to inquire about the problems she encountered the previous day while practicing Water Release: Water Chaos Wave.

"Increase the scale of ninjutsu?" Imai Shinichi was taken aback.

As an ordinary Chunin, his chakra reserves were only average. He had to carefully calculate the amount of chakra he used, so how could he possibly increase the amount of chakra he injected on a large scale to increase the size of a ninjutsu?

Of course, not being able to use it in actual combat doesn't mean he doesn't understand this knowledge.

"This is knowledge that only elite Chunin, or even special Jonin, would have access to. But since you have a huge amount of chakra, it's no big deal to tell you in advance."

Nobuyuki Imai advised, "First, you need to improve your chakra control and chakra nature transformation. Only when both of these aspects are strong enough can you ensure that you can still perfectly control your ninjutsu after increasing the amount of chakra injected."

"The reason why the power and scale of your ninjutsu did not increase as expected after you increased the chakra injection is because your control and nature transformation abilities are insufficient."

"As for the specific training methods for these two aspects, I will also teach them to you."

With that, Nobuyuki Imai took out two scrolls and handed them to Yoruichi Yagami: "These are training materials for chakra control and water-attribute nature transformation. Take them and study them. If you don't understand anything, just ask me."

Chapter 16 Asuma's Challenge

Back in the classroom, Yagami Yoruichi opened the scroll.

Inside the scroll are training methods for chakra control and water-style chakra nature transformation.

The most basic skills are climbing trees and wading through water, which can be said to be the fundamental skills that all ninjas must master.

For the vast majority of genin and chunin, once they have completed these two trainings, their chakra control is already sufficient, and they do not need further training.

Completing these two training steps is enough to master the vast majority of C-rank and B-rank ninjutsu.