Naruto had once demonstrated how to develop Chakra natures: take a leaf, then use Chakra to cut it. Naturally, that would develop the cutting nature of Wind.
At first, you cut leaves. Later, you cut waterfalls.
So, developing Chakra was simple. Fill your mind with the direction you wanted to develop toward, then just do it.
Chakra was that kind of idealistic power.
Thus, Hyuga Ningyuan held a book in one hand while gathering Chakra in the other, trying to imitate the material of the book.
Developing Chakra natures was much more convenient for him than for other ninja. Other ninja could only rely on imagination, but he could fuse Qi into the material, become one with it, and deeply experience its properties.
"This isn't Chakra Paper!" Sarutobi Biwako noticed Hyuga Ningyuan's actions and said, "Are you trying to find out your Chakra natures?"
"Ah, I am!" Hyuga Ningyuan had not expected that benefit and immediately nodded.
"I happen to have a sheet of Chakra Paper here. Give it a try." Sarutobi Biwako pulled a square piece of paper from her pocket and handed it over.
This thing was not particularly precious, nor was it difficult to make.
But because a ninja would only use it once in their lifetime, the market was tiny, and no merchants bothered making it.
That instead made Chakra Paper extremely expensive, practically impossible to buy at any price.
Fortunately, Sarutobi Biwako was not short on money.
Taking the Chakra Paper, Hyuga Ningyuan poured Chakra into it and watched as it split into three sections.
One section caught fire, one wrinkled, and another became wet!
"Fire, Lightning, Water—you actually have three Chakra natures!" Sarutobi Biwako was somewhat surprised by the sight.
She had thought the Hyuga Clan had no Chakra natures, since she had never seen them use elemental Ninjutsu.
Who would have thought that they not only had them, but had so many!
"Hehe." Hyuga Ningyuan smiled bashfully. The result was good, but—
He believed that what the Byakugan projected through its vision was X-rays. X-rays were Electromagnetic Waves, and the thermal radiation of Fire was also a type of Electromagnetic Wave.
There was even less need to mention Lightning. Lightning was electricity, and electricity was an Electromagnetic Wave.
Therefore, the Hyuga Clan should possess both Fire and Lightning natures.
It was not just him. Hyuga Hinata also had Fire and Lightning natures.
But then he thought of Hyuga Neji. That kid had Fire, Earth, and Water natures, with no Lightning at all.
Had Hyuga Ningyuan guessed wrong?
No, how could I possibly be wrong!
That meant the theory was not complete enough and needed revision.
For example, the Byakugan did indeed emit Electromagnetic Waves, but that was Chakra processed by the Byakugan. It had nothing to do with the original Chakra.
So regardless of whether a Hyuga had Lightning-nature Chakra, he could emit Electromagnetic Waves through the Byakugan.
"Do you want to learn elemental Ninjutsu?" Sarutobi Biwako asked.
"No. I'm already learning Genjutsu and Medical Ninjutsu. I'm exhausted enough as it is!" Hyuga Ningyuan shook his head. "Besides, we of the Hyuga Clan don't need to learn elemental Ninjutsu. We have Void Palm!"
"That's true." Sarutobi Biwako nodded.
Hyuga Ningyuan breathed a sigh of relief. He knew Sarutobi Biwako might not mean any harm and simply wanted him to grow stronger, but if word reached Hiruzen Sarutobi or Danzo, it might take on a different meaning.
It was not that he could not learn elemental Ninjutsu, but he had to learn it secretly. He could not let anyone know.
"Are you tired of studying?" Sarutobi Biwako asked again.
He had been tearing paper and folding Paper Airplanes. It was obvious that he had run out of patience!
"Uh, a little." Hyuga Ningyuan rubbed his temples, looking dizzy and dazed.
"Now you know how difficult it is to learn medical skill, right?" Sarutobi Biwako smiled. "How about this? I'll teach you a Medical Ninjutsu to give your mind a change of pace!"
"Huh?" Hyuga Ningyuan's eyes lit up. "What Ninjutsu?"
"The most basic healing Ninjutsu, the Healing Technique!" Sarutobi Biwako said with a smile. "But don't think that just because it's basic, it's easy. It's actually a B-rank Ninjutsu, and it isn't easy to learn!"
Medical Ninjutsu had been created by Senju Tobirama, so naturally there were no C-rank or D-rank Medical Ninjutsu. Creating an A-rank Mystical Palm Technique was already Senju Tobirama going easy on people.
Otherwise, judging by his style, all Medical Ninjutsu should have been S-rank.
"Mm, I'm ready!" Hyuga Ningyuan looked expectant.
"Then I'll use it once. Watch carefully!" Sarutobi Biwako formed hand seals, and a mass of emerald-green Chakra appeared over her right hand.
Hyuga Ningyuan secretly activated his Byakugan and confirmed that this technique looked simple—and was indeed very simple.
It merely required steadily outputting Chakra with healing properties.
The reason it was classified as B-rank was likely because of its high entry threshold.
Not everyone possessed Yang Release Chakra and could learn Medical Ninjutsu.
"Hand seals, then..." Hyuga Ningyuan followed Sarutobi Biwako, forming hand seals first. Then emerald-green Chakra gathered over his right hand as well.
Even without looking closely, one could tell that his Chakra was much greener than Sarutobi Biwako's!
"Hm?" Sarutobi Biwako froze. She had heard from Kurenai that Hyuga Ningyuan was talented at learning Genjutsu.
But even Genjutsu required three or four attempts. She had not expected him to succeed with Medical Ninjutsu on his first try!
It seemed that compared to Genjutsu, he was even more suited to Medical Ninjutsu!
She recalled the fish that had instantly recovered when they had tested his talent for Medical Ninjutsu earlier.
Perhaps their world of Medical Ninjutsu had truly gained a super genius!
No, this went beyond a super genius!
He was the savior of Medical Ninjutsu!
"Try this one too!" Sarutobi Biwako formed another hand seal. This time, green Chakra appeared over her left hand.
Hyuga Ningyuan copied her. Moments later, green Chakra appeared over his left hand as well.
Sarutobi Biwako grew even more excited and continued forming hand seals. "And both hands!"
Left-hand Healing Technique, right-hand Healing Technique, and two-handed Healing Technique—those were all the branches of the Healing Technique. The left- and right-hand versions had the same healing effect, while the two-handed version was somewhat stronger.
The reason for developing the left- and right-hand versions was mainly to make it convenient to treat two people at once on the battlefield.
Sarutobi Biwako had only just finished forming her hand seals when green Chakra appeared over both of Hyuga Ningyuan's palms at the same time!
"As expected of a genius!!" Sarutobi Biwako could not help exclaiming.
Being able to perfectly replicate it after seeing it once not only proved that Hyuga Ningyuan had a good memory, good comprehension, and talent for Medical Ninjutsu, but also showed that he had naturally strong Chakra control.
Not one of those factors could be missing.
And with all those talents, what else could he be if not a genius?
His Chakra also possessed naturally powerful healing abilities!
For a moment, Sarutobi Biwako was almost jealous. Could the gap between people really be this large?
My decades of hard work aren't worth a few minutes from someone else!
Fortunately, he's my disciple!
So, since he learned Ninjutsu so quickly—
"Try this technique too!" Sarutobi Biwako formed several more hand seals, after which emerald-green Chakra covered her entire palm.
A-rank Medical Ninjutsu: Mystical Palm Technique!
It had stronger healing capabilities and could activate cells, allowing wounds to heal with extreme speed.
So how fast was "extreme speed"?
The answer was: five minutes!
A moment later, seeing the emerald-green Chakra covering Hyuga Ningyuan's entire palm, Sarutobi Biwako felt as if she were about to go mad.
Not because Hyuga Ningyuan could instantly learn an A-rank Ninjutsu, but because of what that represented.
An ordinary Medical Ninja needed five minutes to heal a single wound on a single ninja with the Mystical Palm Technique!
Yet before Hyuga Ningyuan had even learned Medical Ninjutsu, he could already heal a wound in a few seconds.
Now that he had learned the Mystical Palm Technique, his Chakra's healing ability would only become stronger. Perhaps he would need only one second to heal a wound!
With the same amount of Chakra and the same amount of time, other Medical Ninja could only treat one wound.
But Hyuga Ningyuan could treat 1 * 60 * 5—three hundred!
So Hyuga Ningyuan's healing efficiency was three hundred times that of other ninja?
It went beyond that!
Using Medical Ninjutsu consumed Chakra. A Medical Ninja who could maintain output for one hour was already remarkable. Someone with a large Chakra reserve like Tsunade could sustain it longer—three hours!
In three hours, she could treat thirty-six people!
Thirty-six people, nine ninja squads—on a battlefield, it was not exactly insignificant, but it would not make much of an impact.
But how many could Hyuga Ningyuan treat in three hours?
60 * 60 * 3 = 10800!
Ten thousand eight hundred people was already the total number of people on one side of a battlefield!
In other words, if a war broke out and ten thousand people were deployed, only for all of them to be injured and withdraw—
The enemy would need days or even months of treatment to recover, while after three hours of treatment, everyone on my side would be restored to full health!
This was no ordinary genius!
He was strategic-level talent, someone capable of changing the course of war and even the state of the world!
Before you continue