Overdrafting the Future, Starting in Naruto

As time entered February, the temperature began to rise. The sun made people feel lazy, the accumulated snow melted everywhere, and the thick ice on the lakes grew thinner. Genichi moved his Ice Release training ground from the lake within Konoha to one in the mountains behind the village, where the temperature didn't rise as quickly.

Although he hadn't succeeded in mastering Ice Release yet, he had indeed made some progress. At the very least, he could now fuse the Water and Wind Release nature transformations of his chakra. The key, however, was to form a new nature transformation; otherwise, it could only be used to perform combination ninjutsu.

Genichi had anticipated that his Ice Release training would be slow. If Kekkei Genkai were so easy to develop, they wouldn't be so rare in the ninja world. That was why he used a large number of shadow clones to accumulate experience, maximizing his chances of success. Each shadow clone, during its training, could be considered a separate individual.

While his shadow clones were busy, Genichi's real body spent most of its time at the Konoha Hospital, especially recently, after Tsunade had obtained Hashirama Senju's cells.

Genichi had long known about Hashirama's power and the power of his cells. The research data he got from Orochimaru had provided a much more direct understanding, but it was only after seeing the cells with his own eyes that Genichi truly appreciated their strength and terror.

His own physical constitution had already surpassed that of Tsunade and Jiraiya, but judging from a single cell, the gap between him and Hashirama Senju was at least tenfold. And this was just the difference in the amount of chakra. The most crucial part was the even greater gap in quality.

If Genichi's chakra was iron ore, then the Eight-Tails' chakra was refined steel of extremely high quality and purity. As for Hashirama's chakra, its quality was even higher than the Eight-Tails'. Perhaps it could be compared to nanoscale iron powder?

Genichi hadn't yet studied the Nine-Tails' chakra. He wasn't sure if Hashirama's chakra quality was comparable to the Nine-Tails' or even higher. Among the nine Tailed Beasts, from the One-Tail to the Nine-Tails, not only did their power increase, but the more tails they had, the closer the essence of their power was to the Ten-Tails. Hashirama was the reincarnation of Asura's chakra and possessed Asura's power, which came from the Sage of Six Paths.

Genichi guessed that the quality of Hashirama's chakra, or at least its Yang Release aspect, was far stronger than the Nine-Tails'.

"The gap is too big…"

"If we're comparing Yang Release nature transformation, the difference is at least several orders of magnitude."

"My strongest nature transformations are Yin and Water Release, but even so, the difference in a direct comparison is at least several dozen times…"

Genichi speculated that even a Mangekyō-level Yin Release probably didn't have as high a quality as Hashirama's Yang Release. The only exception would be Madara Uchiha, who was also the reincarnation of Indra's chakra.

"Lady Tsunade, can this level of Yang Release be achieved through training?" Genichi asked, looking up from the microscope to Tsunade, who was reading through some documents.

Tsunade looked up and said flatly, "I don't know. But at the very least, my own Yang Release nature transformation is still a great distance from my grandfather's. The most important thing is the natural activity of the cells themselves."

Natural activity. Genichi mulled over the meaning of the word, then translated it in his mind: Talent! Hashirama's Yang Release was a product of extraordinary talent. As expected, no amount of hard work can beat incredible talent.

But then Genichi understood another meaning in Tsunade's words. "Lady Tsunade, do you mean that your cell activity doesn't match the level of your Yang Release nature transformation?"

Tsunade nodded, then pinched the bridge of her nose. "The essence of chakra is a combination of physical and spiritual energy. Training in nature transformation isn't just a change in chakra affinity; it's also an enhancement in quality, which becomes especially obvious as the degree of the nature transformation deepens."

"A medical ninjutsu like the Mystical Palm Technique uses Yang Release chakra to enhance the activity of cells in a wound, causing them to divide rapidly and thus achieving a quick healing effect."

Genichi picked up where she left off. "In other words, chakra can in turn affect the physical body. From a Yang Release perspective, one manifestation of this is cell activity. Hmm, it could also be described as an enhancement of life force."

Cell activity manifested in many ways. It wasn't just Yang Release; Lightning Release was also often used. The classic example was Kumogakure's Lightning Release Chakra Mode, which used lightning chakra to enhance cell activity, thereby strengthening physical power and speed—especially speed, not just movement speed, but also neural response speed. Kakashi's Chidori, or rather Raikiri, also provided a speed boost. Tsunade's Monstrous Strength, beyond the burst of chakra, also involved the activation of cells, primarily to increase strength.

"That's right. A powerful chakra nature transformation can affect the physical body," Tsunade said. "I'm not clear on other aspects, but Yang Release nature transformation can enhance one's own cell activity. You've seen the Third Raikage's son from Kumogakure. The bodies of everyone in that clan are extremely powerful. Besides talent, it's mostly the result of constantly tempering themselves with Lightning Release. That is how lightning-natured chakra changes the body. I still haven't found a clear method to use Yang-natured chakra to train the body and permanently increase cell activity."

In other words, the level of cell activity Tsunade could produce with her Yang Release was far greater than her body's own natural cell activity. They were a complete mismatch.

Genichi guessed, however, that the Third Raikage and his clan's own Lightning Release nature transformation was also not a perfect match for their body's inherent activity. But the Lightning Release Chakra Mode was an effective method for enhancing the body. Tsunade just hadn't found a similar method yet.

Genichi immediately thought of the Strength of a Hundred Seal. The Yin Seal, the Strength of a Hundred Seal, and Creation Rebirth were three different ninjutsu. The Yin Seal was a prerequisite for the Strength of a Hundred Seal, and both were prerequisites for Creation Rebirth. Together, the three created her signless healing.

Judging by Madara Uchiha's evaluation of Tsunade during the Fourth Great Ninja War, although she hadn't reached Hashirama's level, she was already very strong. Looking at Creation Rebirth, an S-rank medical ninjutsu, it was clear that Tsunade, who had mastered it, had already reached an extremely advanced level of Yang Release, capable of healing without hand seals.

If her own cell activity matched the level of her Yang Release, Tsunade wouldn't need the Strength of a Hundred Seal, or even the Yin Seal. The Yin Seal provided a massive quantity of chakra. The Strength of a Hundred Seal was the system that could precisely deliver that massive amount of chakra to every cell in the body, raising the activity of each cell to the point of self-regeneration for the duration of the jutsu.

"Quality and quantity are both indispensable!"

Genichi keenly grasped this point. He said to Tsunade, "Lady Tsunade, I can't think of a high-intensity training method for the body like Kumogakure's Lightning Release Chakra Mode right now, but extending from the Yin Seal, there might be a gentler method."

Tsunade raised an eyebrow. "What method?"

Genichi smiled. "From the perspective of human growth, hmm, or rather development, it requires a huge amount of nutrition. Taking you as an example, Lady Tsunade, under normal circumstances, your cells have already reached their growth limit. Even though human cells are constantly being replaced, the upper limit for each new generation of cells is already fixed."

Tsunade nodded in understanding.

"So," Genichi continued, "if chakra is feeding back into the body, and we focus on the cells, we can think of it as inducing the cells to develop a second time. In that case, we don't just need stronger Yang Release chakra, but also enough nutrition for the cells to potentially undergo secondary development, break their limits, and become stronger."

Tsunade's eyes brightened slightly. She tilted her chin, gesturing for him to continue.

Genichi pointed to Tsunade's forehead, then untied his own ninja headband, revealing the Yin Seal mark. "The chakra stored in the Yin Seal can serve as the cells' nutrition. Next, we would need to construct a delivery channel to precisely transport the Yin Seal's chakra to every cell in the body. Of course, that's not enough. Because the chakra stored in the Yin Seal is refined from our own bodies, it's the same in quality. It can maintain cell activity and prevent them from aging, but it's not enough to make them evolve. For that, we need to develop another system to perform nature transformation, continuously stimulating and activating the cells, keeping them in a highly active state to promote their evolution."

This system wasn't just the Strength of a Hundred Seal from the original timeline, but should be—

"Then let's just store Yang Release-transformed chakra directly!" Tsunade said immediately. Her Yin Seal and Genichi's both stored chakra with no nature transformation, or rather, attribute-less chakra.

Genichi nodded. "That would indeed work. You don't need to perform other nature transformations, Lady Tsunade. If we can achieve this, even if it's difficult to induce secondary cell evolution, one effect is certain: it will slow down cellular aging!"

Tsunade's eyes grew even brighter. She was now in her thirties, in her prime, but also at the age when aging begins. A woman will always care about her appearance. There are many reasons for human aging, but one of the most critical is the natural aging of cells, the loss of activity, and eventual death. Chakra could maintain cell activity, thereby slowing down aging, preserving a youthful appearance, and even extending one's lifespan.

Hearing this gave Tsunade even more motivation to develop such a jutsu.

Seeing her expression, Genichi was secretly speechless. As expected of a woman, beauty is the prime motivator.

He thought for a moment and said, "Directly storing Yang chakra in the Yin Seal is indeed more convenient, but if we want to fundamentally improve the body, or rather, the cells, we still need to develop an effective jutsu that allows chakra to feed back into and enhance the cells."

"I know, I know!" Tsunade waved her hand dismissively.

Heh, women.

Genichi turned away, his focus shifting back to himself. But he wasn't thinking about Yang Release or cell activity, but about Yin Release, and human spiritual energy—or rather, the soul and willpower.

The human body and spirit-soul are two sides of the same coin, inextricably linked. When you have ample physical energy, your spirit is high. Physical illness leads to mental fatigue and a decrease in willpower, making one feel fragile. At the same time, spiritual will can allow a person's body to erupt with strength far beyond its normal limits. Training the body and making it stronger can also be reflected in the spirit, indirectly elevating one's mental state.

But was it possible to develop a jutsu similar to the Lightning Release Chakra Mode that could specifically temper a person's spirit and soul? The human body was incredibly complex, and the human spirit-soul was a mysterious realm that was difficult to touch directly.

Each time Genichi overdrew from the future, as his physical body grew, he could also clearly feel his spiritual power growing in sync. But it wasn't enough. The spirit was related to Yin Release nature transformation, which was in turn related to the Sharingan and genjutsu.

(End of Chapter)

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