Chapter 20: Clarification.

"Don't worry, Mika-nee! Whether it's the village or the clan, both can benefit from this matter. I believe neither the Third Hokage nor the Uchiha clan leader will refuse such a good deal!"

To successfully accomplish something, it involves multiple interest parties. If a result that satisfies everyone cannot be achieved, it will often end in failure.

The current head of the "Uchiha Shige" family is one of the graduates from the Ninja Academy. After the unexpected early death of Uchiha Ging, a student of the Second Hokage, he took over as the clan leader.

Over the years, he has been striving to maintain the relationship between the village and the family. At the same time, he has been working hard to reduce the negative impact caused by the 'renegade' ancestor of the family, aiming to return to the center of power in the village of Konoha.

That 'Dance King' ancestor of the family really wasn't any bit reassuring. After the establishment of the Konoha village, not only did he defect, but a few years later he also engaged in a peak battle against the First Hokage known throughout the ninja world—with the Nine Tails no less—and lost in the end...

The influence on the family was quite severe. Under the deliberate guidance of some with intent, a historic internal conflict broke out among the three Mangekyo Sharingan holders within the family.

The clan's strength plummeted, and the Second Hokage seized this great opportunity. Using the actions of that ancestor as an excuse, he kicked the clan out of Konoha's power center.

Uchiha Toshirou had every reason to believe that if Konoha village hadn't been established for less than ten years and the major ninja families hadn't truly submitted, the outcome for the Uchiha family wouldn't have been as simple as just being kicked out of the power center! Even so, the family seemed to have been handed a 'time bomb.'

After dinner, Uchiha Mika was preparing to head to the study to work on a newly developed medicine when she was stopped by Uchiha Toshirou, who was sitting on the sofa.

"Wait a moment, Mika-nee. There is something I'd like to consult with you about!"

"Eh! Since a year ago, Toshirou has seldom asked me about anything. Is there something he doesn't understand?"

With the knowledge foundation from his previous life, except for the first six months after traveling through time, slowly going through the family's collection and the textbooks of Uchiha Mika from the Ninja Academy, his understanding of the supernatural power called chakra had already surpassed an average ninja's.

"It's about physical activation. As a special medical Jonin, I believe Mika-nee can give me good advice in this area!"

"Physical activation, huh? But considering Toshirou's age, it's too early to be thinking about this..."

"I just want to do some detailed preparation in advance for when I genuinely start activating my body in the future."

Hearing this, Uchiha Mika was not surprised. This child always does things with thorough consideration, moving only after planning.

"Is that so! Then what questions does Toshirou have? You can tell them to me." She slowly sat on the sofa and took Uchiha Toshirou into her arms affectionately, rubbing against him.

Smelling the refreshing fragrance, Uchiha Toshirou felt somewhat helpless. Although this was quite enjoyable, where was his dignity as a man?

Of course, he had no improper thoughts. Uchiha Mika, his younger sister, had lived with him after their parents passed away, and feeling like a third wheel in her brother's married life, she moved in with Toshirou, creating a sense of mutual reliance. Uchiha Toshirou had gradually come to regard her as a true relative.

He did not live alone like some other time travelers, afraid that his secrets would be discovered.

With the experience of two lives, he was too familiar with the loneliness and solitude of living alone. Humans are social animals; whether men or women, they need the company of relatives, friends, and loved ones.

With Uchiha Mika's explanation, Uchiha Toshirou gained a deeper understanding of physical activation—a profound application of chakra.

The so-called physical activation means using the supernatural power of chakra to nourish and stimulate the body or body tissues, achieving a similar enhancement effect.

The Inuzuka clan in the original story is a good example.

Clan members nourish their sense of smell with chakra, giving them extremely heightened olfactory abilities. In times of need, they can further stimulate their olfactory system with chakra, exponentially increasing their abilities.

However, chakra is not an energy that comes from nowhere. Just as a person cannot pull themselves up by their hair, a ninja cannot use chakra, composed of their own 'physical energy' and 'spiritual energy', extensively to nurture their own body.

They can only accumulate chakra bit by bit through the most primitive methods of 'eating' and 'sleeping' to strengthen a certain part or system of their body.

Excessively forcing the body during childhood can cause irreversible consequences for future growth and development, having a significant lasting impact. Therefore, major ninja clans do not teach this art to their children too early.

Generally, they only start attempting it slowly after the age of ten...

This is the typical path for a ninja's growth: accumulating chakra bit by bit after the age of ten to gradually nourish and stimulate the body, synchronously enhancing one's strength.

In contrast, 'Jinchuriki'—those with tailed beasts sealed inside them—use the leaked chakra of the 'tailed beast' inside them as nourishment, naturally activating their body and enhancing their comprehensive physical abilities.

Extracting chakra and allowing it to naturally disperse throughout the body follows the same principle, though the amount of dispersed chakra is much smaller.

One method involves carefully controlling chakra energy refined from oneself, step by step. The other method utilizes the leaked chakra from the 'tailed beast' inside, allowing it to spread naturally throughout the body.

These are the two main methods of physical activation: one slow, meticulous but targeted; the other rough, letting things take their natural course but holistic.

Upon recollection, it seems only natural.

Special powers used by Jinchuriki in various villages, such as Lava Release, Boil Release, and Sand Release, all come from the activation modification of their bodies by the tailed beast's leaked chakra.

"So, Toshirou, there's no need to rush. Wait a few more years until your body grows more, then gradually begin this long-term ninja training..."

(End of Chapter)