"My biggest shortcoming right now is that my chakra reserves can't keep up. There's no way around it unless I step further into the Chunin level.
Otherwise, I can only rely on my own spirit and physique," Sora thought to himself.
Physique, talent, and spirit were innate traits that couldn't be chosen.
However, they could still be compensated for through acquired effort, so Sora never complained.
"Mom says that whether a person's physique is strong depends on their internal organs—if the organs are strong, physical fitness will naturally improve.
But I don't see it that way. Besides those, there is also blood and vitality."
Sora had been studying the human body alongside Tsunade for years.
As a legendary medical ninja, Tsunade possessed an extremely deep understanding of the human body.
To develop techniques or modify the body, one first had to understand every part of it.
For that reason, Sora had spent years observing, researching, and learning under Tsunade's guidance.
He understood his own physical condition very clearly and had also learned some medical ninjutsu, though nothing particularly advanced.
After all, his time and energy were limited. Trying to master too many techniques at once would only lead to mediocrity.
Through years of observation, Sora noticed something important.
Anyone with a powerful physique also possessed extremely strong blood and vitality.
Take Tsunade as an example. Even though she was already in her forties or fifties, her blood vitality was incredibly vigorous.
When she exerted herself physically, her body felt like a blazing furnace, her vitality burning like raging flames.
On the other hand, those with weak vitality gave off the opposite impression. Instead of warmth and vigor, they lacked yang energy and appeared sickly.
Such people were usually frail. Even a common cold could keep them bedridden for days.
After careful observation and study, Sora concluded that if a person's blood vitality was weak, their body would never become truly strong.
Conversely, when blood vitality was abundant, it naturally nourished the internal organs, strengthening the body from within.
Thus, Sora had been focusing his research in this direction.
After all, he clearly remembered the sudden inspiration he had years ago—it was closely related to blood.
"The idea you mentioned about blood vitality before is indeed worth researching," Tsunade said thoughtfully.
"I've noticed that regardless of the approach, many theories eventually reach the same destination—only the methods differ. It seems you have a unique understanding of this field."
"Maybe it's because that idea came to me suddenly back then, so the impression stuck deeply," Sora replied.
"Mom, I want to learn Nature Transformation."
"Nature Transformation?" Tsunade raised an eyebrow.
"You want to study Nature Transformation before even mastering Shape Transformation? Give me a reason."
If anyone else had said that, Tsunade would have dismissed it as overconfidence.
But after spending years together, she knew Sora wasn't the type to chase unrealistic goals.
"I want to learn Nature Transformation so I can use the elemental changes of Water and Fire to temper my physique," Sora explained.
"In my opinion, Water and Fire oppose each other—but they can also generate each other if you grasp the correct balance.
It's just like Yin and Yang. They oppose each other, yet they also give rise to one another. If Yin and Yang can coexist and generate balance, then why can't Water and Fire?"
Sora spoke firmly, "I have a feeling that Water and Fire will become the key to changing my life. The only question is whether I can grasp that turning point."
"Alright. Come with me." Tsunade thought about it for a moment.
Over the years, she and Sora had often discussed research topics together.
She understood his thought process very well and had guided him many times.
It was precisely because Sora had Tsunade's knowledge, experience, and insight supporting him that he could progress so quickly—and even possess the confidence to attempt creating new techniques or a potential Bloodline Limit.
"Since you want to learn, I'll teach you. Although you currently possess Water and Fire attributes, there's no guarantee you won't awaken other nature transformations in the future.
Understanding them now will help you later when facing powerful opponents. Let's start with Fire. Simply put, Fire represents high temperature and burning.
Once you understand this nature and integrate it into your Fire Release techniques, their power will increase greatly while consuming less chakra.
Wind represents sharpness and cutting power—severing everything it touches. Lightning focuses on paralysis and penetration.
When applied to weapons, it increases lethality and adds an electrical shock effect. Earth can alter hardness and composition.
Skilled users can make objects as hard as steel or as soft as clay—and some can even manipulate gravity. Finally, Water is the simplest.
Compared to the others, it is purer and more fluid. Its nature involves submerging, covering, and impact, allowing Water Release techniques to expand their range and power.
It can also change shape freely, such as transforming into water itself. These are only the common interpretations," Tsunade continued.
"That doesn't mean Nature Transformation is limited to these ideas. If you manage to comprehend a completely new interpretation, that would be even better.
Never lock your thinking. The thing I admire most about you is that you dare to think freely without letting your mind become rigid.
Now let's begin practice." Tsunade handed Sora a leaf.
"Infuse your chakra into this and imagine the state of burning flames. If you can transform your chakra into fire and burn the leaf, you succeed."
The method sounded simple.
But in practice, it was far from easy.
Sora immediately created five Shadow Clones.
With his current physique, enduring the strain of five Shadow Clones was no longer a problem.
"Sora," Tsunade said softly.
"I'll do everything I can to help you. Let me see how far you can go as an ordinary person. I have great confidence in you."
She stepped forward and gently kissed him on the cheek before leaving.
Naturally, she was heading off to gamble, since Sora had just brought in a fresh sum of bounty money.
"Burn… burn… burn…"
Sora repeatedly visualized flames in his mind, imagining his chakra heating up and igniting.
All five Shadow Clones trained alongside him.
However, Tsunade hadn't noticed something before she left.
Another Shadow Clone quietly appeared beneath a nearby tree.
With its palm open, it seemed to be practicing something entirely different.
After beginning Nature Transformation training, Sora adjusted his routine.
In the morning, he focused on physical training.
In the afternoon, he practiced Nature Transformation.
In the evening, he refined and circulated his chakra.
For the time being, he also stopped hunting Chunin-level Rogue Ninjas.
Half a year passed in the blink of an eye.
During those six months, Sora's height increased noticeably again.
With his excellent nutrition and constant physical training, it was inevitable.
Although the growth wasn't as dramatic as before, he still grew several centimeters.
After all, Sora had not yet reached his major growth period.
Once he entered puberty, his body and strength would improve rapidly.
According to Tsunade, Sora's power wouldn't increase dramatically before the age of twelve.
However, starting from twelve would mark his golden period of growth.
Aside from rare prodigies, most powerful shinobi experienced explosive improvement beginning at that age.
The Sannin, Uchiha Itachi, and many others were the same.
Naturally, Sora would be no exception.
...
Author's Note:
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