Paraquat

Kamiya Family.

"Shimura Ken is known as the Wind Ghost, an outstanding Konoha Jonin. He has completed 22 S-rank missions, 185 A-rank missions, 229 B-rank missions, 115 C-rank missions, and 16 D-rank missions!" Kamiya Sanyō read the intelligence obtained from outside with seriousness.

"He possesses both Wind and Earth chakra natures. His most proficient ninjutsu are: Wind Style: Vacuum Sphere, Wind Style: Vacuum Wave, Wind Style: Vacuum Cut, Wind Style: Vacuum Shuriken, and Earth Style: Earth Flow Wall, Earth Release: Swamp of the Underworld."

"Wait, why is the efficiency so high? They even know what missions he's completed?" Kamiya Keiyun looked at Kamiya Sanyō curiously. Did I misread? Is my older sister actually an unparalleled intelligence genius?

"Uh, it's not that my efficiency is high. It's just that Shimura Ken talks too much. He often brags about his past exploits in taverns, so now you can find out just by asking anyone!" Kamiya Sanyō said.

Kamiya Keiyun nodded. It's understandable. After all, he was a Jonin back then, but now that he's lost a leg and can't be a Jonin anymore, it's natural for him to reminisce about the past from time to time.

"But everyone says he's bragging, so I don't know if this information is true or false," Kamiya Sanyō said.

"I'll be the judge!" Kamiya Keiyun looked at the thin piece of paper, analyzing it bit by bit.

Wind Style, Earth Style, chakra natures?

So, is this the official term for using elemental powers? Then wouldn't Hatake Sakumo be Lightning Style?

So, is Shimura Ken training his lungs? And what system is Earth related to?

As for the ninjutsu that followed, Kamiya Keiyun felt the possibility of bragging was low. After all, these techniques clearly belonged to the same lineage. It's impossible to fabricate such detailed information so coherently.

"Vacuum Sphere, 'Sphere' means 'ball' in Japanese, so the meaning of this technique is Vacuum Ball. How big is the vacuum ball? Is it to cover someone, making them suffocate, while simultaneously creating a pressure difference to kill them?"

"Vacuum Wave, it's also hard to understand. How does a vacuum form a wave? Is it a moving area of vacuum?"

Kamiya Keiyun was speechless. After receiving the intelligence, he was stunned to realize that with his current knowledge, it seemed no different from having no intelligence at all!

He understood too little about the ninja system. Kamiya Keiyun felt like a pseudo-scientist, grasping at a few terms and making conjectures. What's the difference between this and a blind person touching an elephant!

Fortunately, there was a part of cultivation that he could experiment on himself. Most of his conjectures were based on his experimental results and were not entirely baseless.

"This is frustrating, but if my deductions are correct, this Shimura Ken has at least completed one bodily system, and possibly even two. After all, Hatake Sakumo only displayed Lightning Style. Doesn't that mean he's stronger than Hatake Sakumo?" He then thought about Hatake Sakumo's terrifying combat power and his own cultivation progress.

The cultivation of Chakra Control is fast at the beginning and slow later. Although Kamiya Keiyun made progress every day, he wasn't confident he could complete the cultivation of an entire system within a month.

It wouldn't be strange even if it took a year or two.

Especially since his chakra volume couldn't increase due to his age.

Therefore, if it came down to raw strength, Kamiya Keiyun wasn't confident he could defeat this Shimura Ken.

"So, I can only use other methods, like poisoning!" Kamiya Keiyun shook his head. The main reason was that he was a modern person.

Modern people rarely assassinate like ancient assassins, with a sword and in dark clothing.

They usually use sniper rifles, handguns, or even trucks.

According to a certain Teacher Chen, if guns, cannons, or even rocket launchers were available, they should all be used. If possible, a nuclear bomb would be best to ensure success.

Kamiya Keiyun didn't have a gun, so he could only choose poison. Another advantage of using poison was that the technological level of this world was not developed. If modern chemical toxins were used, they generally wouldn't be detected.

A famous chemical toxin would be cyanide, but Kamiya Keiyun wasn't a chemistry major and didn't know how to make it.

However, within his field, he actually learned the preparation method for one poison.

Paraquat!

Paraquat is an excellent herbicide. It only targets weeds and doesn't harm crops. It quickly loses its herbicidal activity upon contact with soil, leaving no residue. It doesn't damage plant roots, pollute the environment, or corrode metal machinery. It can be stored for over two years at room temperature.

Even more valuable is its low toxicity to poultry, fish, and sealed animals, so it doesn't affect the ecosystem.

In summary, this is simply the most perfect herbicide.

Unfortunately, it's too effective on humans. Only 1-3g is enough to completely kill an adult, and there is no antidote. Almost all who ingest it die, and even those who miraculously survive suffer immense pain, which will continue in the future.

Although Paraquat is a modern chemical agent, its technological content is not high. It was synthesized as early as 1882, and the era in which Naruto is set could completely recreate this agent.

But the problem is, Konohagakure, where Kamiya Keiyun is located, is not an industrial village, and he can't buy the raw materials.

Even if he could buy them, he wouldn't dare to buy them within Konohagakure; it would be too easy to get caught.

"Sister, are there any plans for us to go out recently?" Kamiya Keiyun asked.

"No," Kamiya Sanyō thought for a moment, "Not that I know of, but I don't know about Dad!"

"If you get married, won't he invite relatives and friends to see?" Kamiya Keiyun asked.

Kamiya Hiromi also had family, who were priests at the Inari Shrine, but they lived in a different village than Kamiya Hiromi's family.

"I don't know," Kamiya Sanyō thought for a moment, "But if you need it, I can try to persuade Dad!"

After all, she was about to be married off to Shimura Ken to contribute to the Kamiya family. If she wanted to see relatives and friends before getting married, there was no reason for Kamiya Hiromi to object.

Otherwise, it would be too unreasonable!

"You try first," Kamiya Keiyun said, "Call me if it works!"

Don't put all your eggs in one basket. Kamiya Keiyun started thinking of other methods.

The main issue was that this method was too fragile. Although Paraquat was not easily detected, the symptoms of poisoning were quite obvious. If they investigated people connected to Shimura Ken, the Kamiya family could easily be exposed.

And if they checked further, they might find out the Kamiya family had recently left the village?

Then they would be exposed!

You don't need a Detective Conan; any reasonably competent police officer could reach a similar conclusion.

"Oh, right, do you know anyone with kittens?" Kamiya Keiyun asked again.

"Ah, that, Miss Takahashi has some. Her Taihu just had six kittens and she's thinking about giving them away. I wanted one, but Dad won't let me!" It was no wonder Kamiya Sanyō, who was connected to Konoha's circle of best friends, knew about such trivial matters.

"Is that so? Let's go take a look. If we can, we'll adopt one!" Kamiya Keiyun said.

"But what about Dad..." Kamiya Sanyō hesitated.

"It won't be a big problem. I'll say I want to train the kitten into a ninja beast, and he'll agree!" Kamiya Keiyun said.

"Oh, that's true!" Kamiya Sanyō understood. At this moment, the most important task for the entire family was Kamiya Keiyun's cultivation.

Just like parents in her previous life never spared money on study materials, her family would definitely support anything related to Kamiya Keiyun's ninja path.

Wasn't the reason she was married off just to get Kamiya Keiyun into that so-called Root organization!

So, this reason was actually feasible!

Thinking of this, a wave of sadness inexplicably surfaced in Kamiya Sanyō's heart.

Actually, this situation was very common. In the village, there were plenty of girls who were married off at twelve or thirteen. But after all, she had been influenced by some of Kamiya Keiyun's ideas, and she found such a future truly difficult to accept.