'Although I didn't get to meet Hiruzen, I got to see two important things. Chakra control and the shadow clone jutsu. I should try the shadow clone jutsu when we get home.'
The walk back home was short. Once they were back, Sasuke locked himself in his room.
'Nano, there is no one watching, right?'
[Affirmative. There is no one watching you.]
'Nice! Alright, transfer the data you observed from tree walking and shadow clone jutsu to me.'
[Affirmative!]
Not even 30 seconds later, Sasuke had all the knowledge needed to walk on trees and cast a shadow clone jutsu.
[Body transformation transfer on standby]
'Is it going to take a long time?'
[Negative! It will be 15 minutes. The transformation is mainly for chakra control and hand dexterity for weaving signs.]
'15 minutes? Alright. Let's do it.'
Sasuke climbed into his bed. Nano did its job and put him to sleep, while changing his body. The change was entirely internal. He didn't bulk up or anything. His chakra coils however, were much stronger than they were 15 minutes ago
15 minutes later, he woke up. He didn't feel much different.
[Transformation completed successfully]
Sasuke turned to the wall and walked towards it. He didn't slow down at all; he just put his foot on the wall and took a step as if he was walking casually.
Once he was in the middle of the ceiling, Sasuke stopped
'This is so cool! Alright, here comes my first legit jutsu.'
Sasuke crossed his fingers, and with a dull puff sound, another Sasuke was standing on the ceiling next to him.
'The shadow clone jutsu is a B-rank jutsu. It's the multi-shadow clone jutsu that is forbidden. Nano, give me an analysis of my chakra after using the shadow clone jutsu. I don't feel any different.'
[Notice: Shakra drain was minimal. Chakra output had been controlled to prevent fainting. Current use is minimal; for maintaining the clone.]
'So this clone can barely support itself.'
Sasuke willed the clone to vanish, and it did with a puff. He felt the chakra return to him.
[Notice: Incoming data. Data processed. Initiate information transfer?]
'I expected this. This means I can use the shadow clone for training with no problems.'
After some more thought, he came up with a different idea.
'How many shadow clones can I create?'
[Without over-exerting your chakra reserves, three]
Sasuke created three shadow clones. He didn't need to tell them what to do; they already knew what their job was.
All three snuck out of the house. It was easy since his mom was not a shinobi.
Each of the clones took a different exit out of the clan compound.
While the clones were busy with their work, Sasuke was having lunch with his mom.
The rest of the day went on as normal.
His dad came back early, and they had dinner together.
It wasn't until 11 pm that he felt his chakra return to him.
[Notice: Incoming data. Data Processed. Initiate information transfer?]
'Yes'
Sasuke was fed the information, not through the mechanism built in the shadow clone jutsu, no. It was intercepted by nano and then fed to him through nano itself.
'Great Haul!'
Sasuke was happy with the memories he got back from the clones.
Each of his clones went to a different area for observation.
The first went to the academy. He went around the back to the open area available for all children to practice. There were a few students practicing their throwing techniques. Once it got later in the day, the children left.
The clone decided to go elsewhere and gather more information. It went towards the training grounds used by civilian shinobi. He tried to spy on people while they practiced.
He was caught multiple times, but he would usually show a shy look and tell them that he wanted to be a strong shinobi.
Most would just dismiss him and tell him to leave them alone, but others encouraged him and even gave him some advice. There was even a chūnin who showed off his fire jutsu.
He kept going from one training ground to the next. He managed to observe many different people using/practicing different techniques.
The second clone had a similar job. But he chose a different target. He went towards the training grounds reserved for teams. Those were mostly empty since most teams were out on missions, but he still managed to observe many valuable things.
The first team he spied on, luckily or unluckily, had a sensor. He was caught straight away.
He used the same excuse. To the jōnin sensei, he was just an overexcited kid who couldn't wait to become a shinobi.
The same thing happened; he was told to go home and leave them alone.
He obviously didn't listen and walked deeper into the training grounds. He ran into multiple genin teams. Most were led by a chūnin. Those were his favorite, since he got to spy on them for a while before he got caught, or just left them without anyone knowing he was there.
He also ran into a few teams led by a jōnin. He was always cautious about those. He would observe for a minute at most before he was caught.
He was smarter than trying to run away, so he would never resist and just come out when he was caught. He always told the same lies. He showed the same excited expression. The same one that all children had when they dreamt about being heroes for their village.
Again, he was dismissed without a second thought.
Despite all of that, his haul was impressive. He had already seen someone use the mystical palm jutsu on their teammate. He saw multiple people use multiple different jutsus, elemental and otherwise.
The third had a different approach. He walked to the edge of the village until he was all alone. He found a very shallow creek, and then he started practicing water walking. He spent some time doing that, but he ran out of chakra and got dispelled. Even though the clone didn't have Nano to perform microanalysis on every small mistake he made, he still managed to learn water walking in less than a day.
Sasuke was lying on his bed, going through the information that he just got back from his clones. Nano was almost done analyzing everything they saw and felt.
'Mystical palm jutsu. Body flicker jutsu, a few different jutsus from each element, except wind. I even saw someone use a genjutsu. Multiple throwing techniques and many different taijutsus. Holy hell, one day, and I'm already ahead of most special jōnin. In knowledge only, though. And my chakra control has gotten way better after learning water walking.'
[Notice: Analysis complete. Semi-completed profile on fire, earth, water, and lightning chakra natures. Data stored under file "Nenjutsu"]
[Multiple taijutusu observed, analysis complete. Taijutsus are combined and modified to better fit the host's body size. Data stored under file "Taijutsu"]
[Mystical palm jutsu observed. Theoretical knowledge is not enough. Further data needed. Data stored under file "Medical Ninjutsu"]
[Yin release analyzed. Genjutsu mastery requires further data on yin release and genjutsu techniques. Data stored under file "Genjutsu"]
[Notice: The expenditure of chakra has caused a slight increase in your chakra volume]
'Ok, that was a lot, but good. I just need to keep this up and see if I can create a full profile on all of them. Also, glad to know that my chakra will increase the more I practice. It might seem obvious, but seeing it confirmed is still nice.'