"First of all, Kirigakure did not attack Konoha. Even if Kirigakure and Konoha are allies... an ally of my ally is not necessarily my ally."
Yagyu sat down slowly in front of Tsunade and spoke casually.
"Secondly, there is no so-called alliance treaty between Kirigakure and Konoha. At the very moment we were signing the treaty, you people attacked me."
"After that, I caused a huge scene and took you away from Konoha. In other words, the treaty never existed. The fact that Kirigakure hasn't attacked Konoha directly is already giving you plenty of face."
Yagyu spoke unhurriedly with a lazy expression.
"Finally, you staying here as a hostage is to prevent Konoha from acting recklessly. This is a unilateral restriction. Do you understand?"
"Only Konoha is restricted; Kirigakure is not. This is the price for your sneak attack. I hope you can understand that."
Tsunade stared at Yagyu furiously, while Yagyu met her gaze with indifference.
Tsunade sighed helplessly, looking conflicted. "What exactly do you want to do?"
Yagyu replied casually, "What I want to do has nothing to do with you. You just need to do your job."
"I asked you to teach your medical ninjutsu to Kirigakure, but you haven't done it yet!"
"Also, ever since you came to my house, you've been eating and drinking lazily without fulfilling your duties as a maid."
"If you keep this up, I'll have to consider making you pay off your debt with your body, understand?"
Tsunade was furious, slamming the table. "You dare!"
Yagyu's expression turned serious as he stared silently at Tsunade.
Tsunade became uncomfortable and said weakly, "If you let me leave, I can consider giving you the medical ninjutsu."
Yagyu smiled. "Don't rush! I'll let you go once the situation in Konoha stabilizes."
"Before that, not only do you have to share your medical ninjutsu with Kirigakure, but you also have to help me perfect a Nintaijutsu (Ninja-Taijutsu) style."
Constrained by the physical limits of the Naruto world, the Rokushiki couldn't be used as pure Taijutsu.
Unless one opened the Eight Gates to break the human limit, the Rokushiki couldn't be performed normally.
However, if converted into Nintaijutsu, it would be much easier to use.
Tsunade's Chakra Enhanced Strength was an instant-cast jutsu, just as convenient as pure Taijutsu.
Tsunade looked at Yagyu suspiciously. "Are you sure you're not joking?"
Yagyu looked at Tsunade seriously. "It's not a joke."
Once the situation in Konoha stabilized, the Fourth Hokage would basically be selected.
Sending Tsunade back at that time might put her in an awkward position.
It would be like the Crown Prince being captured and taken away, only to be sent back after the Second Prince had succeeded the throne.
Even if Tsunade wasn't targeted in Konoha, the higher-ups whom Yagyu had manipulated would continue their infighting.
At that point, Tsunade would become disappointed with Konoha, just like in the original story, and leave the village.
When that happened, Yagyu was fairly confident he could recruit her. That would make taking over Konoha much easier.
If even the First Hokage's granddaughter rejected Konoha, would other ninjas still be willing to fight for it?
(Let me explain again why the protagonist doesn't just destroy Konoha directly.
Because the protagonist wants to unify the ninja world and change the world, not just beat everyone up and slaughter the five great villages one by one.
Public support is crucial. It determines the protagonist's identity: are they an invader or a savior?)
Tsunade pondered for a moment, then said helplessly, "Fine! I accept your request. I will teach the medical ninjutsu I know to Kirigakure."
Yagyu was surprised. "No hesitation this time?"
Tsunade said coldly, "Hmph! As if I have any other choice. If I want to leave here, I have no choice but to trust you."
Yagyu praised her insincerely, "A wise choice! Young Princess Tsunade, in the future, you will surely rejoice over the choice you made today."
Tsunade began creating ninjutsu scrolls, recording the medical ninjutsu she mastered.
At the same time, she was writing medical manuals, documenting her medical knowledge.
Tsunade became busy, while Yagyu remained as leisurely as ever.
Taking his three disciples fishing and then drinking tea under a sun umbrella was his main job.
Zabuza complained to Yagyu with a dissatisfied face, "We've already mastered water walking. Why do we still have to do this boring work?"
Yagyu said lazily, "You think I'm only training your water walking skills? Wrong. I'm training your temperament!"
"Momochi Zabuza, your temperament is terrible! Irritable, impulsive—how can someone like you complete ninja missions?"
"If you can't correct your flaws, I'll kick you out of my team. I can't afford to be embarrassed like that."
Zabuza panicked and quickly promised, "Teacher Yagyu, I was wrong. I won't do it again."
Seeing Zabuza admit his mistake sincerely, Yagyu nodded with satisfaction. Fortunately, this guy was still salvageable.
"Teacher Yagyu, the Taijutsu you mentioned to me..."
Minazuki Ao stood prettily beside Yagyu, asking hesitantly.
"That's still being prepared. You guys learn other things first."
"No rush, it'll be ready soon."
Yagyu explained unhurriedly. He planned to research the Rokushiki with Tsunade tonight.
Tsunade had been busy with medical ninjutsu and knowledge these past few days, so there had been no progress on the Rokushiki Nintaijutsu.
Evening.
Yagyu wrote down the training methods for Rokushiki and handed them to Tsunade.
Tsunade looked puzzled. "What does this mean?"
Yagyu said casually, "Read it first, then we'll talk!"
Tsunade read for a while, then frowned. "This is Taijutsu? It's a pity, it's too idealistic."
"To achieve this level is theoretically impossible. Humans cannot possess such powerful physical constitutions."
Yagyu smiled. "Then... what if we turn it into Nintaijutsu? Transform pure Taijutsu into Nintaijutsu. If the physical constitution isn't enough, use chakra to enhance it."
"I provide the Taijutsu, you provide the Ninjutsu. Once synthesized into Nintaijutsu, it belongs to me. That was the condition we agreed upon—you have to help me perfect this Nintaijutsu."
Tsunade hesitated.
If this Nintaijutsu could really be created, it would be extremely powerful.
Letting Kirigakure possess such powerful Nintaijutsu...
"Do you not want to leave?"
Yagyu picked up a glass of water nearby and said lightly, instantly defeating Tsunade.
"You win!"
Tsunade glared at Yagyu resentfully.