NARUTO: SECOND GOD OF SHINOBI

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Hiruzen settled down in his place, soon starting to study the memory transmitted by the clone to him.

He then started to convert chakra to Yang chakra and soon began the Yang breathing exercises accordingly.

As he started flowing the now converted Yang chakra throughout his body, the chakra began seeping into his cells and strengthening them.

Some cells couldn't cope with the amount and quality of Yang chakra, so they started the process of destruction throughout his body.

Even then, the Yang chakra continued to do its work as new and powerful cells started forming in his body.

Soon, three hours passed, and the cells all over Hiruzen's body had undergone one cycle of destruction.

With Yang chakra continuously seeping again and again to the point where his control over his body started to loosen due to the overgrowing strength and chakra.

He spoke to his clone,

"My body is too hot. I don't know, but it seems like nuclear reactions are happening throughout my cells again and again.

My control is also loosening with my overgrowing physical prowess and chakra."

The clone responded, "It's totally according to theory.

In the Demon Slayer world, breathing is the process of taking in oxygen to fill the cells with the required amount to strengthen them.

In our world, we change the process to chakra, such that cells all over the body will be filled up to the brim and destroyed if they cannot bear the strain.

It's just that this process requires immense energy, which can only be supplemented by natural energy intake from the surroundings."

Hiruzen nodded.

Soon, another three hours passed, and the chakra density and potency became very violent to maintain, causing another cycle of destruction and regeneration throughout the body.

Hiruzen spoke, "My chakra pathway system has cracked more than ten times today to accommodate the violent chakra, but they have become ten times larger, and the flow is very natural throughout them."

Soon, he stood up and started walking.

CRACK!

As he took his first step, the ground sank slightly around his foot due to excessive strength.

He spoke, "It seems some control is required." Soon, four clones emerged, and they started drawing signs in the air with their fingers coated in chakra.

Soon, a complete box formed around Hiruzen, and gravity started increasing.

All six walls began emitting gravity onto his body. Hiruzen slowly started controlling his physical strength.

As the pressure increased, he began feeling more and more strain on his body.

Hiruzen thought, Experienced human airplane pilots in my previous life could sustain themselves at ten times the gravitational pull for some time.

In this world, ten times is nothing at all for them to survive for two to ten minutes, with three times the number of cells in any person's body and chakra energy to maintain them.

Soon, the gravity gradually increased to twenty times, and the strain started increasing.

With his body weight of 74 kg, the weight he bore was now 1,440 kg.

The gravity kept increasing, reaching thirty times, then forty times, and soon fifty times, increasing his effective weight to 3,700 kg.

Hiruzen spoke with some sweat on his forehead, "This much is bearable. Increase it."

The clones continued, raising the pressure to 4,000 kg, almost fifty-five times the gravity.

Even then, he gritted his teeth and spoke with heaviness and breath, maintaining his constant total concentration breathing along with Yang breathing.

Soon, the cells inside his body started undergoing another round of destruction due to stress and regeneration.

After just ten minutes, he began feeling light again. Hiruzen spoke, "Increase."

The clones raised the gravity gradually until it reached sixty times. Observing Hiruzen under the immense pressure, they stopped increasing it further.

Hiruzen also maintained his constant breathing, and another half an hour passed.

This time, the clones gradually lifted the gravitational pressure, bringing it down to normal levels.

Once it stabilized, Hiruzen kneeled on one knee and maintained his breathing rhythm to gradually calm down.

Hiruzen spoke, "Let's start the Yin release." Soon, he sat down again.

This time, chakra was converted into Yin release. To sustain his physical capabilities, his mental prowess was necessary.

Soon, the chakra converted into Yin release, and his spiritual energy started increasing to maintain balance with his physical energy.

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Over the last seven years, he had studied souls and the methods to gradually channel spiritual power through his studies and the Second Hokage's notes on spiritual energy.

Once he gained sufficient control over his soul, he began researching soul arts and methods to enhance spiritual power, similar to the spiritual arts of Bleach.

However, he didn't know the proper methods to comprehend them well enough to create a version for himself, unlike what he had done with physical arts.

He did, however, know methods of Yin release from the Yamanaka clan and the Uchiha clan's Sharingan techniques, which he had taken from their library and secret scrolls.

In these, he found ways to channel only Yin chakra, though there were no methods to strengthen it—those he had derived from his study of Yin breathing.

Six hours passed, and Hiruzen opened his eyes.

He spoke, "My mental power has increased significantly, almost matching my physical power.

Now my chakra limit has also increased tenfold. It seems that excess energy in one aspect alone will cause wastage, as chakra can't exist in anything other than a 1:1 ratio."

The clone spoke, "You're absolutely correct. Chakra can't be increased without both physical and mental power growing in balance.

If only one aspect increases, such as through Taijutsu for physical strength or Genjutsu for mental strength, excess energy will be unable to be converted as the other aspect has reached the limit.

However, if both aspects increase equally, chakra increases proportionally."

Hiruzen nodded thoughtfully while accessing his body, "It seems in one month, I'll have chakra levels matching those of the Nine-Tails. But my chakra quality still isn't on par with a tailed beast."

The clone nodded. "That's true. All tailed beasts convert natural energy into chakra. Humans, on the other hand, refine chakra within their bodies.

You can increase your chakra quality by compressing it—or you could absorb a tailed beast's chakra.

With your assimilation skill, your chakra's quantity and quality would nearly reach the peak of the super shadow level, surpassing even Hashirama's."

Hiruzen responded, "I had already thought of this nearly sixteen years ago.

Not only chakra but also any bloodline—be it the Sage Body, Sharingan, or Byakugan—can be perfectly assimilated into me almost instantly.

But what difference would it make? If I absorb tailed beast chakra, my chakra might morph toward that of the Ōtsutsuki… or it might not.

Should we conduct an experiment? Let's see whether the chakra fully assimilates into me or changes my chakra's quality to match that of a tailed beast.

Also, begin working on a technique for converting natural energy directly into chakra. Now, let's create Wood Release."

Soon, three clones formed alongside Hiruzen.

"We've already created Deiton (Mud Release) from water and earth chakra.

Now, if the theory is correct, without Yang release combining with water and earth chakra, the wood property of growth and absorption can't be achieved.

Just like how trees grow—by planting a seed in the earth, watering it, and allowing it to absorb sunlight—we can replicate this process by planting the wood chakra attribute within ourselves, using earth chakra as the base, combining it with water chakra, and supplying Yang chakra as life energy."

All the clones nodded. They started changing their chakra nature into earth, water, and Yang.

Using Deiton as the base, they infused it with Yang chakra. Hiruzen activated his Creation skill, gradually creating Wood Release.

If their comprehension was correct, the process would yield results.

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Hours passed, and by nightfall, a different chakra attribute formed.

Soon, a tree began growing from the point of chakra conversion between Hiruzen's clones.

Hiruzen spoke, "Success! The theory was correct. We didn't expect the initial seed to be us, though."

Another clone nodded.

"Yes. By treating ourselves as the seed, planted in earth chakra and combined with water chakra, and then infusing Yang chakra with earth directly instead of later, the process worked perfectly."

Hiruzen spoke again, "Let's saturate the wood chakra attribute in my body so it can accommodate the changes from Wood Release."

Soon, he began converting the wood chakra into his body, gradually integrating it.

After half an hour, everything settled down. Hiruzen stood up and said,

"Wood Release is technically a Kekkei Genkai if we don't count Yang release as an element.

Now, let's summon the Scroll of Seals and begin mastering the Wood Jutsu arts in a day.

Let's begin, boys!"

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