After quickly finishing up, Shinji left a Shadow Clone to guard the Hokage Office.
He then headed to the training ground. Recently, he had been primarily teaching Karin, but he couldn't neglect Naruto and the others' training either.
Karin now needed more time to slowly refine her abilities, allowing Shinji to focus on his other disciples.
Upon arriving at the training ground, Shinji first checked on Naruto and the others' progress. It was decent, they were all at a similar stage.
Naruto and Sasuke were still practicing their respective Nature Transformation training.
Shikamaru, Ino, and the others were practicing the improved version of the technique he had taught them last time, and their progress was good.
Choji, however, showed the biggest change. With the amplification of Butterfly Dance: Gluttony, he had inexplicably grown much taller recently. This piqued Shinji's curiosity, he hadn't expected this jutsu to promote growth.
It was likely due to increased energy intake, as the Gluttony state itself maximized the application of one's own energy.
The morning training passed quietly under Shinji's observation.
After eating lunch, Shinji looked at Sasuke, who was seated, and smiled, asking, "Sasuke, how have you been recently?"
Sasuke, who had been resting with his eyes closed, opened them and looked at Shinji upon hearing his question, replying, "Sensei, I'm doing alright."
"It's just—"
At this point, Sasuke thought for a moment and took out a notebook. This was what he used during his current training. Sometimes, when he unexpectedly thought of an idea, he would first jot it down.
Shinji reached out and took it, beginning to read, a smile involuntarily appearing on his face.
It was very good, almost all about the development of Lightning Release, with a focus on Chidori and Activation Imprint.
"What is this?" Shinji pointed to the crossed-out section in the Activation Imprint notes and asked Sasuke curiously.
Sasuke glanced at it, then shook his head. "It was a direction I thought of before, but after thinking about it for a while, I don't think it will work."
Shinji nodded understandingly and said, "Tell me about it. Let me see if I can give you some guidance."
Being able to analyze pros and cons was a good thing.
Sasuke thought for a moment and explained his idea, "I was thinking of making the imprints throughout the body no longer independent points, but rather connecting them into a complete imprint pathway."
Shinji asked with a surprised expression, "You're thinking of using this to enter a continuous, stable super-activated state?"
This idea aimed to perfectly integrate his own Chakra Nature into a Kekkei Genkai -level ability.
"Yes." Sasuke nodded repeatedly.
That was exactly his idea.
As expected of sensei. Even with his vague explanation, he could understand the underlying meaning.
Shinji stroked his chin. Sasuke's idea wasn't necessarily unfeasible. It was just that he lacked certain knowledge of the human body.
Although Sasuke's Activation Imprint Type Two had increased in number, and its distribution had expanded to almost all major muscle groups, comprehensively boosting his strength and speed, he had forgotten one crucial thing.
Even for a ninja with Chakra, the heart is paramount. Without completing the Activation Imprint in the heart, it would be almost impossible to bypass the current stage and achieve the state Sasuke desired.
Of course, there were also factors of human self-preservation.
After all, doing so would mean Sasuke's internal organs would have to endure immense pressure, unless his physical constitution was inherently special.
However, don't forget, Sasuke has the Sharingan.
Shinji thought for a moment, organized his thoughts, and then looked at Sasuke, saying, "Sasuke, how about imagining setting up a core and most complex imprint in your eyes or heart?"
"Set this imprint like an engine switch. Once activated, it can link all the imprints throughout the body."
Sasuke's eyes lit up when he heard this.
That's right.
If he did that, wouldn't it be the initial version of his current idea?
Activation Imprint needed to be prepared in advance at various key locations throughout his body.
Don't let it seem like he just performed a few hand signs to complete it. Before that, he needed to be prepared.
If he followed his teacher's suggestion, he could complete it in an instant.
He could also use this to create a complete imprint pattern, because if it originated from the heart, it would mean that all the body's Chakra pathways would be activated by it.
"However—"
Shinji wasn't as optimistic as Sasuke. After all, this would require the use of Fuinjutsu, and although Sasuke had the Sharingan to help, he still couldn't compare to Naruto's terrifying recovery ability. If he had Tailed Beast Chakra inside him, it might be possible.
Unless—
Shinji thought of the Yin Seal.
It had to be said, Tsunade's jutsu was practically a power source.
Shinji looked at Sasuke with a serious expression and said, "Sasuke, starting today, you will systematically learn Fuinjutsu and the most basic medical knowledge."
If it was as he envisioned, then this Activation Imprint Type Three, once initiated, would forcibly accelerate heart rate and blood circulation, completely squeezing out the body's potential. This kind of action would greatly deplete one's life force.
As his disciple, Shinji felt that Sasuke didn't need to push himself so hard. Instead, it might be better to find an alternative path, using Chakra that he wouldn't normally use as a release condition.
However, in that case, Sasuke would first need to systematically practice Fuinjutsu and medical knowledge. He would also need to consult Tsunade to see if he could draw any inspiration from her.
After all, he had been preparing for the Yin Seal for a long time, but there was no way to learn the advanced Strength of a Hundred Seal.
Shinji thought for a moment and pulled out the book he had used to learn Fuinjutsu from his ninja tool pouch behind him.
"This is the most basic text for learning Fuinjutsu. Read it carefully first."
"Once you've grasped the basics, I will explain in detail how to develop this Activation Imprint jutsu."
"Yes, sensei." Sasuke took the book without question, knowing that Shinji would not harm him.
Moreover, the development of a jutsu itself required a lot of time and practice. His Activation Imprint, in its Type Two form, was already quite good.
However, after witnessing Choji's Butterfly Dance: Gluttony Frenzy, Sasuke felt it wasn't enough. After all, that form was too powerful.
He and Naruto had already tried it before. If they didn't use their true killing moves, they simply couldn't defeat Choji. The shockwaves created by his super-high-speed continuous punches had an absurdly wide attack range.
To be frank, that was the first time Choji alone had defeated their combined attack. Before, one could say it was due to Shikamaru and Ino's cooperation, so losing wasn't a big deal. After all, anyone who dared to underestimate the new generation Ino–Shika–Chō should be prepared for a beating.
Shinji, meanwhile, was pondering how he could ask Tsunade about certain aspects of the Strength of a Hundred Seal.
He believed that Tsunade must have already heard from Hiruzen about his research into the Yin Seal.
Surely, if he asked, she would offer some guidance?
Not just for himself, but imagining Sasuke in a state similar to the Strength of a Hundred Seal, using Activation Imprint to control Susanoo, he would be a true God of Thunder.