"Maybe Sharingan helps us in separating Yin chakra and making it more stable, or helps in projecting it out of our body."
"Both of your hypotheses are correct, but a slight modification is required. Sharingan not only helps us in sending Yin chakra out of our body but also helps in sending our intent in that chakra, which allows us to show the enemy whatever we want them to see.
With this, you know enough basics to start your Sharingan training. Start with your first phase of training, in which you have to separate Yin chakra from Yang chakra in the ratio of 85:15 while making it stable enough to project it out of your body and maintain it for some time.
And you have to do this while your Sharingan is deactivated—don't even think about activating it, okay?" Shisui said.
"Yes, brother," Kaida replied and began his training.
Seeing this, Shisui smiled and then went toward his room, knowing this was going to take time.
Kaida sat in a meditative pose and started trying to divide his chakra into two parts. He smiled, remembering his training about changing his normal chakra to fire chakra during his ninjutsu training with Yukihiro.
Following his past experience, he decided to use Shadow Clones for this. Since he was now able to make many clones, Kaida was sure he would learn this much faster.
He quickly made 40 Shadow Clones and started his training. At first, his clones divided into groups of five and began discussing various ways to accomplish the task, ranging from trying to follow the same method as changing normal chakra to fire chakra or vibrating it to divide it.
After applying all the shortcut methods, they decided to use the longer way of dividing their chakra using intent while meditating.
All of his 40 clones began meditating. Since they had just had lunch, Kaida had around 7-8 hours before dinner. Shisui asked his mother not to disturb Kaida while he was meditating.
Slowly but surely, Kaida and his clones were able to divide their chakra into Yin and Yang. However, as soon as they divided the chakra, it began to disperse, causing the chakra to be wasted.
Normally, Kaida's clones could easily perform this exercise for 5-6 hours, but due to the loss of chakra whenever they were successful in dividing it, Kaida had to disperse his 40 clones and then create 10 new clones with more chakra. After that, he began meditating to refill his chakra, knowing that even with approximately 10% of his chakra, his clones would not be able to continue this exercise for more than 3-4 hours.
To his surprise, after 4 hours, his clones still had 30% of their chakra remaining. The reason for this was that they were able to stabilize their chakra enough to prevent it from dispersing and restore it to normal before it dispersed completely.
He made 10 more clones with 8-9% of his chakra and then dispersed his previous clones, so he regained all the memories along with some of his chakra.
'So intent does play a major role in dividing the chakra, but that alone is not enough. If we just divide the chakra, it gets dispersed into the surroundings. But if we rotate it and try to dissolve it back, Yin and Yang chakra will be able to maintain their form longer.
But that is also not enough. Even though I can maintain Yin chakra for a little longer duration, it is still getting dispersed after 2-3 minutes. Maybe I'm missing something; let's continue training. Maybe I will get some new ideas.'
…
While Kaida was training, Hiruzen received some interesting news.
In the Hokage office, a ninja bowed his head and left the office. Hiruzen then opened the scroll given by that ninja and started reading it.
After reading the content twice, he put down the scroll and thought, At last, Kaida decided to join the Uchiha clan. Who would have thought Kaida would find his long-lost aunt and change his heart? Hiruzen said while shaking his head.
Naturally, he already knew about this. Since Kaida was a valuable asset for the village, Hiruzen had conducted a background check to explore all variables that might arise.
Even though he knew that Kaida still had his family, he decided not to share this information with him. The major reason for this was that he didn't like the possibility of the Uchiha clan gaining such a power boost. They were already powerful enough, and if they discovered Kaida's ability to make chakra weapons, their power would multiply many times. They already had many kenjutsu masters, and with Sharingan, it would be deadly.
With this, they would have enough power to rival an entire ninja village. Adding to the fact that Konoha was suppressing the Uchiha clan, and their relations were getting sour day by day, this outcome was the last thing Hiruzen wanted.
'I just hope that he is still following my advice of not telling others about his talent. If he decides otherwise, then I will have to let Danzo handle this matter. The life of one talented ninja can't be compared to the peace of the whole village; it is all for the village.'
Hiruzen said and then rang the bell once again.
Two Anbu ninjas appeared before him.
"Tell all the ninjas assigned around the Uchiha compound to meet me in 30 minutes."
"Yes, Lord Third," they both said before dispersing.
After 30 minutes, 40 ninjas were standing in front of Hiruzen, all bowing before him.
"You guys have a new task. This is Kaida Senju; he has just joined the Uchiha clan. All of you have to remain alert for any news about him.
If you find anything, report it directly to me. Also, Bear and Boar, you will only focus on him at all times. He will most likely join the Village Hospital the day after tomorrow; the rest of the details will be provided to you.
This is a village-level mission; no mistakes will be tolerated." Hiruzen remained serious throughout.
Everyone nodded and looked at the image provided by Hiruzen before returning to their posts.
The ninjas with bear and boar masks went to the mission hall to get the full details of their missions.
Hiruzen didn't want to take the step just yet. Talented ninjas were very necessary for the village. In the younger generation, there were very few ninjas who could take on the mantle of his position. Even though Kakashi was once a decade's genius with many achievements, he had become very unmotivated after the death of everyone related to him and now only focused on missions.
Since he had joined Root, he had become increasingly dark, and even though Might Guy was powerful enough, he was very naïve at heart and couldn't become the Hokage.
Hiruzen hoped he would be able to find someone talented enough in the future.
Though there was no way he was going to make an Uchiha a Hokage, if trained properly, they could be great assets for the village. Having some Kage-level ninjas aside from the Hokage was essential for the village, especially since all four ninja villages jointly attacked Konoha in every great ninja war.
If the village lacked Kage-level ninjas, the future would be very bleak. This was why Hiruzen didn't want to eliminate Kaida, at least until there was an apparent threat from him.
Now that Kaida was under the protection of an elite Jonin—or even a low Kage-level ninja, Shisui Uchiha, who was also loyal to Konoha—Hiruzen didn't want to take the risk of losing two great assets of the village.
…
Unknown to all the dangers in his life, Kaida was practicing in the garden of his new house. At 7 PM, Shisui came to Kaida and said,
"That's enough, Kaida. You just promised Mom that you wouldn't overdo it. Come take some rest."
"I am sorry, brother; I forgot to keep track of the time," Kaida replied while standing up and dispersing all of his Shadow Clones.
With most of his chakra back to full, Shisui nodded and then asked, "How was your progress? Have you made any advancements?" Initially, he had thought that Kaida would take at least 4-5 days to show any improvement in the exercise, but he hadn't accounted for the effect of training with so many Shadow Clones.
"Yes, I can divide my chakra into Yin and Yang chakra, but maintaining it for more than 10 minutes, even inside my body, is still out of my reach. Maybe it will take some time."
"Your speed of learning this is very fast, Kaida, so don't hurry. At this rate, you'll be able to learn the basics in just one week," Shisui said, smiling.
"Okay, brother."
*Grrr grr* came the sound from Kaida's belly.
"Hahaha, that's why you should also focus on your body while training. Let's go; Mom was worried that you hadn't eaten anything since lunch, so she made dinner a little early. Come on, let's go."
"Okay, brother," Kaida replied with a silly smile on his face.