Lightning Release Training Method

"What kind of expression is that?! To receive Lord Vegapunk's favor, you should accept it with utmost gratitude!"

The displeasure on Hancock's face was obvious before Vegapunk could even speak, as she was the first to take issue with Kakashi Hatake's sullen expression.

Seeing Hancock's fist turn black, cold sweat streamed down Kakashi's forehead. He hurriedly defended himself. "I'm just worried that my abilities might not be enough and delay Dr. Vegapunk's data collection!"

Kakashi knew full well just how much strength those soft, fair-looking arms of Hancock's possessed! Even without using any Chakra, they wielded terrifying power comparable to—or even surpassing—the Strength of a Hundred Sealings. If she lightly punched him, half the bones in his body would probably break!

If this inhumanly beautiful woman in front of him failed to hold back, it was entirely possible that he would end up scattered everywhere—or turned into Kakashi-chan.

"Then cultivate it here first!" Vegapunk waved a hand and said directly, "The equipment here is the most advanced. We'll be able to see the results of your training immediately!"

Kakashi's expression tightened slightly, but he did not say anything more. He still had some confidence in his Chakra control. Besides, Vegapunk truly was an extraordinary genius. Even if this newly created Ninjutsu was imperfect, it could not possibly be something that would kill him outright.

At worst, he would suffer a few injuries! That was far better than becoming Kakashi-chan.

Kakashi opened the scroll in his hand, his gaze narrowing slightly as his expression gradually turned serious.

At first, Kakashi thought it was an advanced version of the Lightning Release Cell Activation Technique. However, after examining it carefully, he realized that this Lightning Release had taken a completely different path from conventional cell activation techniques.

Rather than a buff-stacking Ninjutsu like the Cell Activation Technique, it was more like a cultivation method that used the power of lightning to strengthen one's Physical Body, much like Chakra cultivation itself!

In truth, advanced Lightning Release Cell Activation Techniques already had the effect of strengthening the body. Otherwise, the Raikage of every generation would not all have been such hulking musclemen.

It was merely a passive effect of the Cell Activation Technique, though. No one had ever considered actively using that power to strengthen their own Physical Body.

After all, permanently strengthening the body was far more difficult than stacking buffs, and the human Physical Body in the Ninja World also had its limits.

Although it far surpassed humans from ordinary worlds, even after being trained to the limit, it could only reach that level. At most, one would be stronger and faster; flesh and blood still could not compare to steel in durability.

People like Might Guy and the Raikage could unleash such immense destructive power with their bodies only because they still relied on Chakra. The Physical Body was, at best, a vessel that could withstand Chakra.

Thus, strengthening the body was not particularly cost-effective, while its danger and difficulty were far greater than simply stacking buffs.

However, the Ninjutsu Vegapunk had invented was designed primarily with himself and Hancock in mind. The upper limit of pure physical prowess for humans in the Pirate World was far higher than that of the Ninja World. Those monsters who had honed their bodies to the extreme could face even S-Rank Ninjutsu as if it were a gentle breeze. Naturally, physical training offered far greater benefits to them.

After pondering it for a while, Kakashi gained a little confidence in the Ninjutsu Vegapunk had developed. After all, with his own knowledge, he could not find any flaws in Vegapunk's Ninjutsu.

Moreover, the training method progressed step by step. It did not begin by directly using powerful electric currents, but gradually used Lightning Release Chakra to stimulate and strengthen the Physical Body.

In other words, even if something went wrong at the beginning, it would at most cause some numbness. The chance of injury was low, much less anything fatal.

Watching Kakashi sit cross-legged as if resigned to his fate, Vegapunk smiled and placed several instruments on his body, beginning to monitor the Lightning Release Chakra currents within him.

More than ten days passed quickly. During that time, Vegapunk's Laboratory had never lacked test subjects. With the help of the Quantum Brain, Vegapunk obtained quite a bit of knowledge about Ninjutsu from them.

Most of the Five Basic Nature Transformations were not particularly useful to Vegapunk and the others. Vegapunk could only use pure Lightning Release. Aside from their Ice Release Kekkei Genkai, Hancock and Nico Robin could also use the Wind Release and Water Release Ninjutsu that fused into Ice Release, though none of the three cared much about these conventional Ninjutsu.

A little practice to familiarize themselves with them and gain a few attack methods was enough. After all, conventional Five Basic Nature Transformations all worked more or less the same way: they merely shaped the energy and matter transformed from Chakra into different forms.

However, through these Ninjutsu, Vegapunk could better reverse-engineer the nature of Chakra and develop Ninjutsu better suited to them.

At a training ground in the research institute, Nico Robin was currently practicing a Ninjutsu Vegapunk had developed for her. Her opponent was the unfortunate Kakashi.

During this period, Kakashi not only had to cultivate the rudimentary Ninjutsu Vegapunk had created and help Vegapunk with odd jobs, but also served as Nico Robin's training target.

Fortunately, Nico Robin did not use her Devil Fruit ability or Dual-Color Haki in battle. She fought Kakashi entirely with her physical abilities and Chakra. Otherwise, Kakashi at his current age would have been no match for the enhanced Nico Robin.

After not seeing him for half a month, Kakashi had suddenly grown four or five centimeters taller on the training ground. His formerly slender body had also begun to develop sleek muscles, making him noticeably sturdier.

Clearly, the Lightning Release Body Training Technique had been quite effective on Kakashi. Although it was still impossible to tell exactly how much stronger he had become, the improvement in his physical condition had at least stopped his Chakra reserves from being so pathetic.

At Kakashi's current age, he originally had to count every second he used the Sharingan. Unless he was using his ultimate move, Chidori, he would not reveal the Sharingan at all, because those eyes placed far too great a burden on the still-young Kakashi.

Bearing such a burden during his body's rapid growth period was also why Kakashi's later development never fully met expectations and he faded into the crowd. But now that he had cultivated the Lightning Release Body Training Technique, many of Kakashi's shortcomings had clearly been compensated for.

At the very least, Kakashi on the training ground could now keep his Sharingan active during ordinary battles.