Starting with Naruto, I'll become stronger through my own efforts.

As Xia Zuo's Wood Release technique matured, the difficulty of training it also increased.

It's not that using ninjutsu is difficult, but rather that cleaning up the traces takes too much time.

The forests created by Xia Zuo using Wood Release are growing larger and larger, and even clearing away the most outrageous trees takes dozens of times longer.

A night passed, and he could only practice a few times.

As the area of ​​the forest he created grew larger, the canopies of the trees that made up the forest grew taller, and the trunks grew thicker, the time required to clear it also increased.

Xia Zuo couldn't help but worry; if things continued like this, he would soon be unable to cultivate in the village.

After resolving the Uchiha clan massacre and saving the lives of the Uchiha Izumi family, he proceeded step by step to take the exams and be promoted to Chunin.

Then he accepted a C-rank mission, left Konoha Village, and enjoyed training in Wood Release outside.

Suddenly, Xia Zuo tapped his head.

Why are you being so stubborn?

Wood Release is his naturally awakened bloodline limit, but the reason he keeps training it is because Wood Release has unparalleled deterrent power in Konoha Village, and its deterrent effect in preventing the Uchiha massacre is irreplaceable.

Even the Dust Release, which is a bloodline limit, is far inferior.

However, the fact that the Wood Release technique had such a large impact range proves that Xia Zuo has already achieved his goal and there is no need for him to continue training in a way that makes him feel ashamed.

Instead of wasting so much time cleaning up the traces of Wood Release, it would be better to continue studying the later parts of "The True Explanation of the Five Elements Battle" and fuse them to create a second bloodline limit.

This is the most efficient way.

Having made up his mind, Xia Zuo began to recall the contents of "The True Explanation of the Five Elements Battle" and consider the choice of his second bloodline limit.

He first ruled out bloodline limits that caused too much disturbance, such as Explosion Release and Boil Release.

He then ruled out bloodline limits that were not powerful enough, such as Scorch Release and Lava Release.

In the end, Xia Zuo was torn between Magnet Release and Swift Release.

Xia Zuo was a science student in his previous life, or an anime fan who believed in the lightning that danced at his fingertips. How could he not understand the potential represented by Magnet Release?

Magnetism is one of the four fundamental forces. It is compatible with the weak force and is the most promising force to achieve the unification of the four fundamental forces.

Not only does it have great potential, but its magnetic properties are also incredibly impressive.

Bilibili's Electromagnetic Ace, Magneto, the king of the scene, and the magnetic field-rotating sea tiger, among other big names, all prove that magnetism is the most prestigious force.

He looks really cool when he trains properly.

But Swift Escape is also excellent.

Although there aren't many representatives of extreme speed, they seem so down-to-earth to Xia Zuo.

He possesses unparalleled martial arts skills, is invincible, and is the ultimate killer with unbreakable speed; he also has the Flash, a tool-like character who can restart timelines at any time.

The ninja world itself also boasts the Yellow Flash Minato Namikaze, the recently met Shisui of the Body Flicker Technique, and the Fourth Raikage A from Kumogakure, all renowned top-tier Kage-level ninjas.

After being torn between the two options for five minutes, Xia Zuo chose to use Swift Escape.

There's no other reason than that this is the most concealed bloodline limit.

As long as you don't introduce yourself foolishly and use ineffective chakra fluctuations to conceal it appropriately, even if you use Swift Release in front of the Third Hokage, Hiruzen Sarutobi won't be able to tell.

Xia Zuo found the content on Swift Escape in "The True Explanation of the Five Elements Battle" and muttered to himself to strengthen his memory and enhance his understanding.

"Yes, Swift Release is a fusion of Wind Release and Lightning Release, and the direction of the Wind Release transformation is flow."

"Yes, I understand. The air is slid from the front to the back of the movement, creating a vacuum and low pressure in the front, and a high-pressure jet in the back."

Xia Zuo felt it was quite strange. The qualitative change in Wind Release was the normal direction. Countless Wind Release ninjas had tried it in the past, so why was Swift Release still so rare?

But he immediately knew why: "The direction of the qualitative change in Lightning Release is...weak electricity?"

"Oh, I see. Based on these specific data, the qualitative change in Lightning Release is in bio-neural electricity."

"Hahaha, no wonder the ninjas can't develop Swift Release. It's another qualitative change that goes against the ninja world's theory of only focusing on combat power."

"The core internal organ of the Swift Escape Fusion is..."

Suddenly, Xia Zuo's eyes widened, and even his fingers began to tremble.

"How could it be a kidney? How could it possibly be a kidney?"

"Wind Release and Lightning Release surge and merge around the kidneys... This... this can kill people."

The liver has the strongest self-healing ability among the body's internal organs and is not very sensitive to pain, so liver cancer is often not discovered until it has developed to an advanced stage.

However, when he fused Water Release and Earth Release before, even though it was the gentlest combination of the two chakras and the mildest qualitative change, it still made Xia Zuo break out in a cold sweat from the pain.

The kidneys are an internal organ that is extremely sensitive to pain; even a small kidney stone can make a grown man unable to stand up.

Xia Zuo had suffered from kidney stones in his previous life, and the pain he experienced during those few hours of an attack was devastating.

That night, Xia Zuo hugged the emergency room doctor and cried his heart out, his face covered in snot and tears. He didn't recover until dawn, when he underwent ultrasound lithotripsy.

Xia Zuo's personality suffered a devastating blow, and he lived a shameless life ever since.

Even more critically, the kidneys are the most vulnerable organs in the human body. Those with poor self-healing abilities need to make special backups to cope with the high probability of kidney necrosis.

If irreversible damage occurs during the fusion process, Xia Zuo, at only 14 years old, will face frequent urination, urgency, incomplete urination, or even erectile dysfunction...

Then life would be meaningless.

However, at the end of the section on Swift Escape in "The True Explanation of the Five Elements Battle", there is an additional note added by the Heavenly Demon Xia Zuo.

Upon seeing this, Xia Zuo's dejected mood vanished instantly. He leaped to his feet and shouted excitedly, "Let's do it! Let's go!"

"Swift Escape, we men absolutely must master it!"

What could make someone ignore the certain pain and danger and still do it?

The first thing that comes to mind is hatred!

For example, if a middle-aged father loses his only child, he might disregard death and seek revenge.

Besides hatred, enough self-interest and desire can also make people ignore danger and risk.

For example, when capitalists see an opportunity to make a 300% profit, they can ignore the risk of death.

For example, at the end of the Bloodline Limit: Swift Release Fusion arc, there is a discussion on the treatment methods for kidney damage, especially the addition of the words "Emperor Engine" by Tenma Natsuzo.

Xia Zuo immediately felt that he could ignore the kidney pain that had once made him feel like he was dying.

During the fusion of Swift Release, Wind Release and Lightning Release will inevitably damage the kidneys and cause terrible pain, but it is also a process of strengthening the kidneys.

The "True Explanation of the Five Elements Battle" explains it very clearly: Swift Release not only requires chakra to break through the wind and accelerate reflexes, but also strong kidneys.

Strong kidneys can provide sufficient adrenaline, which can enhance the speed of nerve and muscle reflexes, reduce pain, and prevent being torn apart by the speed forcibly increased by Swift Release chakra.

A strong kidney can also withstand the consequences of an adrenaline surge and quickly eliminate toxic adrenaline metabolites.

In short, Swift Escape requires the support of a pair of Emperor Engines to run as freely as the wind.

Without strong kidneys to support it, even if one awakens the ability to escape quickly, one will still be a defective product that collapses and gasps for breath after running only three steps.