Uchiha Sora did not know that under Kakashi's analysis, the Third Hokage had already locked onto the person who peeked at the Forbidden Technique as an internal traitor.
However, as long as he did not use the Forbidden Technique in front of others, there would be no risk of exposure.
Besides, the time required to learn a Forbidden Technique was not that fast.
Even with the system's automatic cultivation, without needing to research it himself, it was a Forbidden Technique after all, and the speed of completion was far slower than ordinary Ninjutsu.
Especially the Flying Thunder God Technique and Edo Tensei; one involved space, the other involved the soul, which was difficult even for a Kage-level Expert.
Furthermore, after these two techniques entered automatic cultivation, Uchiha Sora was actually able to obtain the key factors regarding these two techniques from the system's feedback.
That was perception ability.
Perception of space, perception of the soul—no matter which one, it had to have an extremely strong mental will as a foundation.
Uchiha Sora's mental will was naturally not bad, but it could not be said to be very strong either.
And to train mental will, on one hand, it relied on the improvement of the Sharingan, passively excavating one's own mental power, but this method had drawbacks; the passively improved mental will was extremely susceptible to the influence of negative emotions.
This was also the reason why the Uchiha Clan's personality was prone to becoming extreme after awakening their eyes.
In fact, a more reliable method was to rely on constant battle and constant tempering of oneself to improve one's mental will.
An expert like Shisui paid extreme attention to the training of his own will, which was why he would not be swayed by extreme thoughts.
And next, Uchiha Sora had to find a way to train his own will.
If he could make his mental will cultivate automatically, then he would have no worries at all.
But wanting to make the ethereal mental will cultivate automatically did not seem that easy.
"Perhaps, I should go and personally experience some tempering." Uchiha Sora secretly made up his mind.
For a long time, he had adopted a safe and conservative way of growing, wanting to keep a low profile and get stronger, but this method ignored the training of his own mental will.
This method was indeed safe, but in the long run, it was probably not conducive to his true growth.
Besides the strength of one's own power, an expert must also have a state of mind that is extraordinary.
...
After the New Year passed, Uchiha Sora finally turned 9, but his height did not look like a 9-year-old child at all. Under the automatic cultivation of his physique, his height was already close to 1.6 meters, reaching the height that some thirteen or fourteen-year-old children should have.
"Wow! Sora, I don't know how you developed, but you're almost catching up to me in height!" In a yakiniku restaurant, Sora and his two teammates had a rare meal together, and Hirai Mitsuteru exclaimed exaggeratedly.
Yūgao Uzuki on the side also laughed and said: "It must be because Sora has good genes. In the future, Sora will definitely grow into a big boy who can give girls a sense of security!"
"Tch, a sense of security isn't brought by height!" Hirai Mitsuteru curled his lips and said: "That depends on strength!"
"Sora's strength is also very strong!" Yūgao Uzuki replied. As a teammate, she naturally knew that Uchiha Sora's strength was not worse than theirs.
At least Yūgao Uzuki considered herself to be no worse than Sora in swordsmanship.
"Alright, I admit that." Hirai Mitsuteru nodded, then curiously asked Uchiha Sora: "But, Sora, are you participating in the Chunin Exams in the first half of this year?"
Uchiha Sora thought about it and still shook his head: "I won't participate this year. I want to wait another year."
His idea was very simple; even if he wanted to train, he wasn't in a hurry, and he didn't want to rush to stand out and attract the attention of the higher-ups.
At least he would wait until next year when he was ten to be promoted to Chunin with Itachi. At least doing this would allow Itachi to help him divert some of the higher-ups' attention.
Moreover, using the next year or so for the system's automatic cultivation to see if he could initially complete the Flying Thunder God Technique.
Tempering himself didn't mean throwing his life away; at least he needed a trump card to save his life.
During this time, he would strive to develop some new Ninjutsu.
...
Time passed, and in a blink of an eye, more than a year passed.
Uchiha Sora was ten years old.
Over this past year, under the continuous automatic cultivation of his physique and Chakra, he had reached the conditions for practicing the S-rank Ninjutsu, Wind Release: Rasenshuriken.
Not long ago, Wind Release: Rasenshuriken was successfully initiated, and the initial training was completed.
The result was being able to add a part of wind attribute change into the Rasengan, turning the originally attribute-less blue Rasengan into a white Rasengan with wind attribute.
This white Wind Release Rasengan was actually a transitional stage between the Rasengan and the Wind Release: Rasenshuriken.
Its power was one or two times greater than the Rasengan, but it was far inferior to the Rasenshuriken.
Besides the Wind Release Rasengan, which could be considered a trump card Ninjutsu, Uchiha Sora also took the opportunity during this time to quietly observe the training of other Ninjas in the village using his Three-Tomoe Sharingan.
Under the repeated observation of the Three-Tomoe Sharingan, Uchiha Sora successfully copied several ordinary Wind Release and Fire Release Ninjutsu.
Of course, even if Sora's Sharingan copied the opponent's Ninjutsu, to perfectly restore it, he couldn't do without the help of the system's automatic cultivation.
After all, his own talent was not of the genius type like Kakashi.
"Sigh, I don't know when the Flying Thunder God Technique will be successfully automatically cultivated. I didn't expect that more than a year has passed, and there's still no movement!" Uchiha Sora frowned secretly.
In another month, it would be time to sign up for the Chunin Exams. He had already agreed with Itachi to participate in the Chunin Exams together and take the opportunity to compete during the exams.
Fortunately, just three days before the start of the Chunin Exams.
The system's voice echoed in Uchiha Sora's mind:
"Ding! Through your unremitting efforts, your Flying Thunder God Technique has finally completed the first stage of training!"
Instantly, a large amount of information regarding the application methods of the Flying Thunder God Technique flooded into Sora's mind.
At this moment, Uchiha Sora had perfectly mastered the first stage of the Flying Thunder God Technique!
The first stage of the Flying Thunder God Technique was actually to teleport oneself and objects one was in contact with to a fixed, immobile coordinate.
The key point here lay in the fixed coordinate! It could not be a coordinate in a moving state, otherwise, the teleportation would fail, and there would be a risk of being sucked into a spatial rift.
Sitting at home, Uchiha Sora took out a special Kunai that had been prepared long ago. This special Kunai did not look different from an ordinary Kunai on the outside; this was to avoid attracting attention. The key lay in the handle of this Kunai, which was wrapped in a special material.
This special material allowed the Formula Mark to remain for a long time without being worn away.
Uchiha Sora had made five such Kunai, including the short sword he had been using; the hilt was also wrapped in this special material.
Then, Uchiha Sora wrote his Flying Thunder God Formula Mark on the Kunai.
Named:
"Sword of Teleportation!"