Kushina's desire for power is understandable, as she wanted to gain strength to help on the battlefield.
However, after the war ended, she felt the danger had decreased, and with her pregnancy, her pursuit of power slowly diminished.
Minato's death was a wake-up call for Kushina. In the Ninja World, even if there's no war, there are various dangerous missions.
If she doesn't have power, she might find herself like a housewife, helplessly waiting at home for Naruto's return from missions, unable to leave the village due to being the Nine-tailed Jinchuriki, even if she knows Naruto is in danger during a mission.
Kushina didn't want this, so she must master the power of the Nine-tails, no matter how challenging the process is.
Hearing that Uchiha Yoichi didn't refuse her request, Kushina felt at ease. She had learned from Minami about the relationship between the Fourth Hokage and Uchiha Yoichi the day before, so she believed that coming to the Uchiha clan would not result in limitations like those set by the Third Hokage.
It's true that not helping Kushina control the Nine-tails now isn't an excuse; Uchiha Yoichi's pupil power really does need time to recover. Otherwise, with the Eternal Mangekyo, controlling the Nine-tails would be no problem, ensuring its calmness for a whole year.
Eventually, Kushina headed back, her emotions now stable, so the Nine-tails wouldn't erupt from excessive grief.
Meanwhile, Minami and Mikota discussed taking turns to accompany Kushina; previously, she was like a burst of happiness, often visiting them. Now that she's engulfed in sorrow, they decided to take turns comforting and supporting her.
Uchiha Yoichi decided not to involve himself in this matter, understanding there's no place for him amidst their friendship.
Upon returning to the village, he focused his efforts on the village's affairs.
The Rokushiki, this type of Nin-Taijutsu, should be classified between C-Class and B-Class. The [Research Assistant] had fully developed it into a technique under the Chakra System, and it could now be passed down to the clan members.
Even clan members who specialize in Illusion Techniques or Ninjutsu Type can learn one or two Rokushiki moves to improve their skills purely with Chakra techniques.
As for Armament Aura and Observation Aura, they are definitely between B-Class and A-Class in terms of Nin-Taijutsu. Even a Jonin, without a solid physical foundation and Chakra Control ability, would struggle to learn these Auras.
While organizing the Rokushiki, Uchiha Yoichi gathered a few students, including Uchiha Itachi, to check their training progress.
After reviewing everyone's progress in the Rokushiki, Uchiha Yoichi had a good understanding. The talent of his students was commendable; even Chishima Ichihiko, who had the average understanding capability, had grasped four of the techniques.
However, he maintained a stern expression as he spoke: "Kurenai, Ichihiko, as seniors seven or eight years older than Itachi, you have mastered as many of the Rokushiki techniques as he has. What are your thoughts?"
Feeling a bit ashamed, Chishima Ichihiko lowered his head. Shiro and Kimimaro were understandable; their Chakra Amounts didn't allow them to train for extended periods. But being outmatched by a new Ninja School student like Uchiha Itachi made this Chunin feel guilty.
Especially since his teacher was the Konoha Lightning Fang.
"Because the teacher didn't provide guidance, and Kami-e and Tekkai don't seem to suit me...."
Yuhi Kurenai noticed that Uchiha Yoichi wasn't genuinely angry and said in a slightly playful tone, "Teacher Yoichi, once I pass the Jonin assessment, I'll train seriously...."
"All things aside, by skipping these two body techniques, training for advanced Nin-Taijutsu will be even more challenging for you."
As Uchiha Yoichi spoke, his right hand wrapped in Armament Aura, turning black.
He then took out a Kunai, infused it with Lightning Release Chakra, and directly stabbed at his palm.
Bang! Bang!
A clear metallic shattering sound resounded. Yuhi Kurenai and the others saw the Kunai, infused with Lightning Release Chakra, shatter into pieces as it struck Uchiha Yoichi's blackened palm.
It was as if it had struck another kind of hard metal with full force.
"Practicing Kami-e and Tekkai aids in mastering another more powerful Nin-Taijutsu. If Kurenai, you are unwilling, then that's fine...."
"Teacher, I'll start training again when I get back!"
Uchiha Yoichi smiled and continued, "Shiro, Kimimaro, and Itachi, your bodies are too small to train until after graduation, so go back and rest for now.
As for you all, once Tekkai can withstand Shuriken Throwing without Chakra infusion, you can come to me to learn the Armament Aura."
Yuhi Kurenai quickly raised her hand to ask, "Teacher, I'm planning to assess for Jonin soon. Can I seek your guidance in my training?"
Hyuga Satomi, not wanting to be outdone, chimed in, "Teacher Yoichi, I also want to...."
Uchiha Yoichi nodded after hearing this, "You're all preparing for the Jonin assessment? No problem, I'll be at the usual place every morning, waiting for you; what about you, Ichihiko?"
Chishima Ichihiko scratched his head and said, "I still need a little more time; I'm not quite confident yet..."
Yuhi Kurenai and Hyuga Satomi were already close to fourteen years old. Without activating the Sage Curse Seal, they would be slightly short of Jonin level, but with it, they would definitely have the strength of a Jonin, so appearing in the Jonin assessment was not a problem.
After saying their goodbyes, Yuhi Kurenai and the other two left early, while Uchiha Yoichi checked the strengths of Shiro, Kimimaro, and Itachi, finding their powers to be quite similar.
Although Uchiha Itachi learned more, Shiro and Kimimaro had both already started utilizing their Kekkeigenkai.
Shiro accidentally used his Ice Release Bloodline to kill those who intended to harm him when he was young. Kimimaro, with his pure Dead Bone Pulse Bloodline, was regarded as a weapon by the Kaguya clan.