Konoha: Unable to learn ninjutsu, they had to develop their own.

"While you can take this herbal pack home and use it yourself, the best option is to go to a professional bathhouse affiliated with Konoha Hospital. So let's go to the bathhouse now!"

"???"

Raikage looked at Guy, unsure whether Guy was keeping it a secret or if he really meant it.

After seeing the bathhouse, the Raikage felt that Guy couldn't possibly be lying—

Is it just an excuse to build a bathhouse?

Did they even specially invite nobles from Kyoto?

This business is booming. If it weren't for Kai leading the way, their so-called Raikage and Cloud Village Envoy identities would be completely useless.

What a huge industry!

Samui looked around: "Then why do we need to bring first-aid kits? Is there some difference?"

"Of course, it's different for distinguished guests!"

Kai gave a thumbs-up and flashed his bright white teeth, instantly extinguishing Samui's desire to ask any more questions.

……

"Did you just give them the medicine kit?"

"Yes, I specifically instructed Jonin Kai not to give them the medicine packets directly, but to take them to the bathhouse to use them, so as to prevent them from analyzing the medicinal ingredients."

Kitayama Osamu said.

Tsunade thought for a moment and said, "Is it possible to secretly take the bathwater and analyze the medicinal properties from it?"

“We made some disguises. After the drug reaction, it is basically impossible to separate the specific drug from it. Even if it is possible, the efficacy will be greatly reduced if several key medicinal materials are missing.”

Kitayama Osamu stepped closer. "I gave them the best kind."

"I see."

Tsunade nodded in satisfaction.

The best herbal bath packs are indeed very effective, but the biggest problem is—

Its main medicinal ingredient can only be found in the forests of the Nara family.

According to Chiba's analysis, it is suspected to be related to the deer and soil of Nara. That kind of medicinal herb is not produced in other places at all, and it will quickly dry out and become unusable after being transplanted.

Even after the prescription was deciphered, it had no practical value for the Hidden Cloud Village.

Tsunade gestured for her to sit down.

She picked up the document.

This is a document about Kitayama Osamu, detailing her experiences, research involvement, surgeries, and more.

It's quite obvious.

Before meeting Chiba, Kitayama Osamu was outstanding, but not particularly excellent. After meeting Chiba, her enthusiasm for learning and research increased rapidly.

In just a few months, her abilities improved significantly.

Thinking of Kakashi, Might Guy, and others, Tsunade couldn't help but sigh—

That kid Chiba...

It truly possesses an incredible magic!

"Lady Tsunade, what's wrong?"

Are you interested in studying ninjutsu?

"of course."

Kitayama nodded.

She considered her words carefully before saying, "I wasn't particularly interested in research before; I mainly participated in surgeries. But then, Chiba solved a medical problem with a single ninjutsu..."

Kitayama Osamu shared his thoughts.

Tsunade listened quietly from the side.

She had previously given guidance to Kitayama Osamu.

The talent might be similar to that of a silent person, but compared to a silent person, there is more research thinking and initiative.

He's definitely a promising talent!

After listening, Tsunade made a general decision.

"I've decided to promote you to Jonin. You'll be in charge of the collaboration between the medical team and the research department. Are you confident in your ability to lead the medical team's research squad?"

"what?"

Kitayama was stunned for a moment.

After a long silence, she said incredulously, "Me? This... isn't appropriate? I feel I'm not capable enough to meet such conditions."

"You don't need to worry about that. Since we chose you, it means we've given it plenty of thought. We certainly didn't pick you randomly."

"Yes! I will do my utmost to complete the mission!"

Kitayama Station.

She left the Hokage Building, feeling somewhat dizzy, completely unable to believe that she had received news of her appointment at this time and place.

Although the appointment hasn't been officially announced, since Tsunade has said so, it's basically a done deal.

She couldn't help but smile slightly.

"Alright! Kitayama Osamu, keep up the good work! Strive to change your title from Chiba's mentor to one of Chiba's mentors!"

"Teacher Kitayama, what's the best way to do it?"

"Hmm? Chiba, no, nothing. Are you going to see Lady Tsunade?"

Kitayama quickly changed the subject.

Chiba smiled and nodded: "Yes, there's something I need to report."

"Okay, you go ahead. Um, I'm going to get busy too."

Kitayama Osamu said this and quickly ran away.

Chiba pondered for a few seconds, then smiled, shook his head, and went upstairs.

He came only to deliver a report on his communication with the Raikage, as well as a few ninjutsu techniques that he had revised himself.

With this report, Tsunade and the others will know exactly what scope to pursue for themselves and what level of ninjutsu to submit.

After that...

It has little to do with me anymore.

Let Tsunade and the others worry about what happens next.

Chiba felt refreshed after leaving the office.

The ninjutsu and taijutsu of Kumogakure are quite commendable, especially after witnessing the Fourth Raikage's battle, Chiba strengthened his resolve to make the deal.

While many techniques can be learned by stealing, the essence of them is difficult to grasp through simple perception or observation with the Sharingan.

These essences are the most precious!

Although the Hidden Cloud Village could also manipulate the "30%", the remaining information is extremely valuable. Based on a basic framework, the remaining content can be deduced.

It's just a simple fill-in-the-blank exercise.

What's missing now is further exchange and talks between the two villages.

He didn't come out of the research institute for the next two days.

One was to try water escape and oil transformation techniques.

Through the fusion technique with the parasitic insect, Chiba was able to initially master the abilities of Water Release and Oil Transformation. After entering Sage Mode, these abilities were further enhanced.

but.

Clearly, these are not enough to capture the Three-Tails.

Three tails can dive.

In the anime, the Three-Tails was completely blown up by Deidara.

Chiba cannot use his Explosion Release technique.

Wide-range water escape techniques are currently very difficult to master, and their cost-effectiveness is extremely low.

The Three-Tailed Fox is an aquatic creature and is not afraid of big waves.

We still need to rely on other techniques—

He pondered the multiplication of detonating tags.

By attaching an explosive tag to the opponent, subsequent explosive tags can be linked together, making it a ninjutsu that results in mutual destruction.

The second generation created it to complement the Impure World Reincarnation.

but.

Since the Impure World Reincarnation technique was already listed in the Book of Seals, the Mutual Explosion Tags technique was also a forbidden jutsu. Until recently, Tsunade gave it to Chiba.

This technique...

After studying it for a while, Chiba's feelings about it were also quite complex.

It's said to be very strong.

The explosive tags are linked to spirits and explode together, making it impossible for the enemy to escape unless they immediately use a substitution jutsu or a death-taking jutsu.

If there are enough detonating tags, even soil and spots can be injured by the explosion.

but.

Explosive tags are expensive!

Creating it yourself is very troublesome and energy-consuming. At most, it can only be used when dealing with the Three-Tails, and it is impossible to use it as a regular tactic.

"Tsunade told me to simplify it, but how can I simplify it? Could it be... um? Wait, its core is actually mutual communication!"

Chiba had been pondering the explosive tags.