At Shinji's house.
After finishing his work and tidying up, Shinji went to the living room and sat down. He then took out a scroll and the Fuinjutsu book he had been reading from a nearby ninja tool pouch. Unrolling the scroll, Shinji began to study it.
Truth be told, although Minato had told Shinji to find the information himself, he thoughtfully had Shinji bring the scroll in, so he could explain while Shinji took notes.
Even though Shinji had already processed the information in his mind while listening, he still needed to reinforce it. He now needed to discard the knowledge points from the Fuinjutsu rewarded by the system in his mind and start from scratch. After all, a systematic approach was better than the current piecemeal understanding.
Although some Fuinjutsu Shinji used were more powerful than average, they felt unstable.
Without a foundation, he was forcefully relying on Yin and Yang Chakra for improvement. This was not what Shinji wanted.
And according to Minato's explanation, the Uzumaki Clan's Fuinjutsu focused more on suppressing Chakra. This was also why the Uzumaki Clan could suppress Tailed Beasts.
It wasn't just by relying on their powerful vitality, but more so by being able to use Fuinjutsu in conjunction with their own advantages to amplify their power.
After flipping through for a while, Shinji finally put down the scroll, closed his eyes, and organized his thoughts.
Then he opened his eyes, picked up the brush he had set aside, and began to write on the blank paper in front of him.
Sealing runes are the most important step in Fuinjutsu formulas. They can be understood as the Chakra pathways of the human body, a method of energy guidance.
Shinji knew how to write runes. After all, this was a benefit provided by the system.
Finger Carving Seal.
Shinji thought about the Fuinjutsu mentioned in the basic textbook.
A fast, small, instant-seal that served to train the precise manipulation of Chakra and the ability to instantly form runes.
"I'll practice this one first."
This basic textbook really solved Shinji's lack of foundation.
Thinking this, Shinji raised his brush and placed it on the paper.
As he wielded the brush and sketched, a simple rune array gradually formed. Shinji put down the brush in his hand, raised both hands, and quickly formed hand signs.
"Seal!"
The runes flowed accordingly, but then dissipated during the final formation stage.
"Indeed, a tall building starts from the ground up." Shinji couldn't help but sigh.
This was the first time he hadn't been able to effectively learn something directly. For other Ninjutsu, even with just a rough idea, he could figure it out step by step.
"Let's continue."
Without further thought, Shinji continued to practice.
The basic textbook stated that those who mastered it within a day were Fuinjutsu geniuses. The next tier of people would take three days, and the lowest tier of people would require about a week.
As for beyond that time, the Uzumaki Clan head had clearly stated:
"Save your energy to learn Ninjutsu or other things. Those who cannot learn it in a week are not suitable for practicing Fuinjutsu ."
Moreover, that line seemed to have been repeatedly scratched by someone's fingernail, likely due to a frustrated senior who lacked talent.
Just like that, the lights in Shinji's house burned late into the night.
—
A new week began, and Shinji arrived at the school early. He now had his own office and didn't need to share with other teachers.
Passing an office, Shinji paused.
Iruka was here so early?
The door wasn't fully closed, so he poked his head in and saw Iruka already busy at his desk.
"Iruka, why are you here so early?" Shinji asked.
"Oh! Shinji, good morning." Hearing the voice, Iruka looked up, and seeing it was Shinji, he happily greeted him.
"Isn't the next semester approaching? This year, I've taken on a class that's about to graduate."
At this, Iruka couldn't help but reach back and rub the back of his head, saying a little awkwardly, "I thought I'd try my best to write something based on my own graduation experience, so not only my students can understand it, but students from other classes can also find suitable positions for themselves."
Shinji was stunned, then began to ponder; this was a very good idea.
"That's excellent, Iruka. Count me in for a part of this." Shinji said, as this kind of thing was also for better nurturing talent.
"But the credit for this is yours. I'll explain it to Hokage-sama later."
As for credit, Shinji had no interest.
One word: unnecessary.
Iruka quickly waved his hand, refusing, "No need, I just had an idea and haven't successfully written it out yet. Besides, Shinji, you're better than me."
"Alright, don't push this back and forth. I'm just doing what I can. That's how it is for now." Shinji waved his hand, not allowing Iruka to refuse, as he didn't lack this small bit of credit.
Last night, he got so engrossed in learning that he actually mastered Finger Carving Seal. And the results were gratifying, he learned it in less than two hours.
This made Shinji realize for the first time that without the Strongest Tecaher System, reaching his current level of strength would definitely not have been so easy.
Moreover, the system wasn't omnipotent, the rewarded Ninjutsu was only given to him. Subsequently, Shinji needed to slowly familiarize himself and analyze them before he could teach them to Naruto and the others.
Taijutsu and Ninjutsu were relatively straightforward. But Fuinjutsu, which required a solid, step-by-step foundation, was a bit difficult.
Anyway, when Shinji was learning now, he needed to discard the knowledge points stored in his mind before he could calm down. This was also why he later needed to independently create some of his own combat methods.
The rewarded items could be used as tools, but not as his fundamental skill for survival. Fortunately, he eventually succeeded, and the results were quite good.
So Shinji almost forgot the time and continued to enthusiastically learn other basic Fuinjutsu. Among them were the Evil Sealing Method and the Five Elements Seal.
The reason why the Five Elements Seal was set as a basic Fuinjutsu by Ashina was that the Five Elements Seal only required understanding how to use the five elemental attributes to disrupt and seal Chakra flow. Moreover, the Five Elements Seal was also the foundational version of the more complex Eight Trigrams Sealing Style.
This was also why, in the original story, Orochimaru was able to use it to disrupt Naruto's Chakra and seal the Eight Trigrams Sealing Style.
...
As students arrived one by one, the once quiet school became increasingly lively.
The crisp sound of the class bell rang, and Shinji walked out of his office towards the classroom.
Inside the classroom, the students were chattering excitedly. When Shinji appeared at the classroom door, they immediately fell silent.
"Good morning, sensei!"
The students greeted Shinji in unison.
"Good morning, class. It seems you all had a good two-day holiday." Shinji said with a slight smile.
Hearing this, the students all laughed. The two-day holiday was their favorite time. They could play without restraint.