Chapter 170 - Ninjutsu Mastery of Tobirama Senju

Hiruzen was slightly surprised when he heard that answer. 'I thought he would start with his primary affinity. Earth…'

The old kage was silent for a few moments as he contemplated the choice.

"Water is certainly a versatile element. Can you tell me the reason for choosing that?" He asked the boy.

Daichi weighed the pros and cons of telling the man why he wanted to start with that. A couple seconds later he ultimately decided to inform the kage of his reasons.

"The versatility of water isn't just in its attack and defense. It's also in its element. Water when cooled down can be turned into ice or if heat is applied can be turned to steam. Ice and steam is something most people see as different elements but at their core they are a subdivision of water."

Kakashi and Hiruzen's eyes widened as they realized where the boy was going with this and they were astonished at what Daichi was intending to do.

"You don't actually think you can use Ice Kekkei Genkai jutsu do you?" Hiruzen asked. In his mind he already knew the answer but he wanted to hear it from Daichi's mouth.

"Yes sir. But not in the way you think." Daichi replied.

Seeing the Hokage's silence, Daichi continued.

"I'm not from the Yuki clan so I won't be able to create Ice particles out of nothing and use Ice style jutsu like them. But if I master water nature to its highest degree, even greater than Lord Second, then I believe I'll be able to turn the existing water around me to Ice and use that to my advantage. By removing heat and cooling down water to 0°C then I'll be able to create Ice. The same in the opposite can also be done and I get steam." Daichi replied and looked at the Hokage.

Hiruzen was amazed at what he heard. It reminded him of the few times with the second Hokage where the man would tell him theories on what was possible. "The logical answer to what you just said is that it's an impossibility…"

The young Genin said nothing as he looked at his leader.

Hiruzen sighed and spoke. "Daichi what you're saying… You're not the first person to think that. Lord Second also had theories that it could be achieved but he was never able to do it… Do you really believe you can succeed where he failed?"

The boy gave a small smile and replied. "I won't know unless I try?"

"You're determined to go through with this aren't you?"

"Yes sir."

Hearing Daichi's strong hearted reply, Hiruzen got up from his seat and went to the corner of his room. He made several seals in a second and focused his chakra on a particular seal etched into the floor. The next second a box appeared and Hiruzen opened it. Rummaging through it for a minute he found what he was looking for.

Hiruzen closed the box and the next second it vanished. He made his way back. 'In the handful of decades only a few powerful ninjas have ever laid their eyes on this. And I'm about to give this to a Genin no less… Even if I refuse, he's just going to go to Kensei and one way or the other I'm sure Daichi will get what he wants. He's becoming so strong in such a short amount of time…'

Hiruzen hesitated for a moment but ultimately decided to give the boy a chance. He gave the scroll to Daichi and sat down in his chair.

The young Genin took the scroll and inspected it. It was a dark blue scroll with the insignia of the Senju clan on it.

"That scroll was written by the Second Hokage himself. His training methods and the theories on Water Nature… The possibilities… All of them are written down in detail. Your talent is undeniable. Since you've insisted on this, lets see what you can do." Hiruzen spoke.

Daichi pocketed the scroll and bowed to the man. "Thank you Lord Hokage."

Hiruzen nodded his head. "Make sure to keep that safe and return it to either me or Tsunade."

Daichi nodded his head and a short while later the Hokage dismissed them.

Kakashi and Daichi were walking down the streets at a slow pace. "You're going to dive right in and not waste time aren't you." Kakashi asked the boy as he read his book.

"You know me so well sensei."

The Jonin sighed as he thought about the extra workload. 'And here I was looking forward to a relaxing few weeks…'

Meanwhile Daichi opened his skill list and looked at the Water Affinity skill.

[Water Affinity - (Active/Passive)(LV.90): Water Release is one of the five basic nature transformations. It is commonly affiliated with Dog hand-seal. Once this skill crosses Level 85 the user can manipulate even the molecular structure of water to create ice or steam. Once this skill crosses Level 90, the user can combine it with other nature affinities which have also crossed Level 90.]

'I crossed level 85 long ago. And I was able to level up all the affinities to level 90 with the first two steps of nature training. Now since I can manipulate water at a molecular level it is best I start with this element.'

Both of them soon reached the training ground. "Why don't you go through that scroll and then we'll start." Kakashi told Daichi and went to sit under the shade of a tree intent on finishing his book before starting.

Daichi didn't waste anymore time and opened the scroll. He slowly began going through every word recorded in the scroll.

The Second Hokage meticulously noted down the most efficient ways to train the water chakra nature and several of his theories. He also theorized that his brother's unparalleled medical ninjutsu skills were also partially due to his proficiency in water style and yang chakra.

As Daichi read through the scroll he understood why the man was considered a genius and a Ninjutsu specialist.

'This guy… His intellect is unbelievable. He theorized that to turn water into Ice he had to remove the kinetic energy from it. Stopping the movement of molecules would bind and transform water from liquid state to solid. He was able to analyze the element on a molecular level? He was also able to find out the atomic structure of Hydrogen and Oxygen. This scroll even notes down what he felt when he created water out of the atmosphere…'

As Daichi read the scroll his theories about the second Hokage were confirmed.

'Humidity is the concentration of water vapor in the atmosphere. The gaseous state of water invisible to the naked eye. Tobirama Senju has an exceptionally high affinity to water nature. With his chakra he was able to extract water out of humid ambient air and use it in his techniques. But that can't be all there is…'

As Daichi kept reading the scroll his suspicions were confirmed. 'So that's how… I see…. He was also a proficient user of other elements as well. So it makes sense.'

Kakashi was keeping an eye on Daichi and realized the boy found something interesting. Truth be told he was also very much interested in the information personally written down by the Genius Ninjutsu creator. With a sigh he closed his book and went near Daichi.

"You look like you found some great treasure… Care to share?"

Daichi looked up and had a wide smile on his face. "Yes. The information in this scroll could indeed be considered a treasure. I believe I know how the second Hokage was able to generate a large amount of water from air. He only noted down a few clues. He certainly didn't want to make it easy. But I figured it out."

Kakashi one visible eye widened. 'This kid… He never ceases to amaze me…'

"What did you find?" The Jonin asked his student.

"There are several factors that come into play. The Second Hokage had a high affinity towards water chakra nature. But he was also a master of the other 4 natures."

Kakashi nodded his head. He read that the Second Hokage was capable in all 5 natures just like the Third.

Daichi continued. "He created water from air through two means. First he spread his chakra around him and cooled down the air below its dew point. The dew point is the temperature of which air must be cooled to become saturated with water vapor. When condensed below this point water vapor will condense and form liquid water."

"But to cool down the atmosphere like that?"

"He used wind chakra… He didn't have the Kekkei Genkai trait in his blood to combine wind and water to form ice but his mastery over that nature allowed him to use it to cool down the atmosphere." Daichi explained.

Kakashi began to understand what his student was getting at. "Similar to a capable fire style user using Ash and smoke…"

"Exactly. But this is only the first. His second method was to combine Hydrogen and Oxygen to create water."

"But to have that kind of deep mastery over the element? Is it possible?" The man was somewhat skeptical but he had no reason to doubt Daichi.

"Combining Hydrogen and Oxygen isn't enough to create water. An energy catalyst like fire or lightning spark is needed to start the chain reaction between their atoms. His affinity towards Ninjutsu was so powerful that I believe he was able to instinctually start this process. I believe this is what the Lord Third meant when he said that one needs the right instinct for this training."

Kakashi slowly nodded his head. "I see…" 'Even with all my training I doubt I'd be able to accomplish a feat like that. The Senju brothers were truly something else.'

Kakashi then looked at Daichi. He was quiet for some time. "Do you really think you can accomplish the same feat?"

"Like I said to Lord Third, I won't know unless I try." Daichi replied.

Kakashi then asked Daichi for the scroll and took a look at it. He quickly went through it and reached the training portion mentioned in the scroll.

"The third step is divided into several tasks. In it, to complete the third step of Water Nature the person must first extract water out of the leaf without making physical contact." Daichi said.

"Hmm… This seems like the reverse of the first step. In the first step one had to concentrate on their chakra and turn that chakra to water nature. That's how the leaf becomes wet. But it seems here, one must focus their chakra and extract the water present inside the leaf. Resulting in the leaf drying up." Kakashi spoke as he went through the details.

Daichi nodded. "It's a lot more challenging than it seems. You have to be perfect in extracting water and just the water content from the leaves. Any damage to the leaves would also indicate a failure. Turning one's own chakra into a different nature is one thing but this… It is doable but far more challenging."

'But luckily I was trained in medical ninjutsu. I know how to identify different substances. Even microparticles and extract them without damaging the surrounding areas. And since I have the gamer system and with my perfect chakra control and high water affinity, I should be able to get this soon.'

"Well, since you were so eager, let's get to work." Kakashi also decided not to waste time and got into his own training. He pulled his headband up revealing the Sharingan.

And like that the next stage of Daichi's training began. He created 10 clones and each one picked several leaves and sat down in the meditative pose. They placed the leaves at least a meter away from them and concentrated.

Daichi and his clones slowly spread chakra through their hands and extended the chakra to the leaves. They kept their chakra neutral and carefully examined the object.

'Analyze the material composition and identify the different elements in it.'

Daichi concentrated his chakra and examined the leaf. It was more difficult without the specific Medical Analysis Ninjutsu that's used on patients.

'This is also a test in how one uses their chakra and how much control they have. The level must be delicate, if not the leaf will get damaged.'

Daichi's concentration reached its peak. All the voices surrounding him disappeared and he was single mindedly focused on his task. As he kept it up, he suddenly found it. He found water particles inside the leaf and concentrated on them. Slowly but carefully he began extracting them. Slowly and carefully moving the water particles through the veins to the upper epidermis and outer layer.

Daichi opened his eyes and let out a breath. He looked at the leaf and saw it. A drop of water was on the leaf he focused on.

"Hahaha…. Yes!"

Daichi immediately created a shadow clone and dispelled it. With the clones having more to work with now they redoubled their efforts.

Soon they began to see results.

[A new skill is created with a specific action.]

[Through continuously concentrating chakra to an object and extracting water, the skill 'Water Extraction technique' has been created.]

The smile on Daichi's face only widened.

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Author's Note:

Don't worry you guys. I'm not gonna make you go through another long training arc.

I wrote this chapter to establish that Daichi had started his next stage of training. I wanted things to have a somewhat scientific root instead of the explanation that 'its chakra and thus equivalent to magic' BS. I hope I got it right.

Next chapter we're back to the Genin missions and other stuff…

And on the matter of Daichi's Tiger summon, he will be tested to see if he's worthy shortly after Canon starts