Paraquat

Kamiya Family.

"Shimura Ken, known as the Wind Ghost, was an outstanding Konoha Jonin. He completed 22 S-rank missions, 185 A-rank missions, 229 B-rank missions, 115 C-rank missions, and 16 D-rank missions!" Kamiya Sanyō carefully read the intelligence she had gathered from outside.

"He possessed Wind and Earth Chakra Natures. His most proficient jutsu were Wind Style: Vacuum Sphere, Wind Style: Vacuum Wave, Wind Style: Vacuum Cut, Wind Style: Vacuum Shuriken, as well as Earth Style: Earth Flow Wall and Earth Release: Swamp of the Underworld."

"No, why was the intelligence gathering so efficient? It even knew what missions he'd carried out?" Kamiya Keiyun looked curiously at Kamiya Sanyō. Had he misjudged her? Was his sister actually an unprecedented intelligence genius?

"Uh, it wasn't that I was efficient. It was that Shimura Ken had a loose mouth. He often bragged about his past exploits in taverns, so now you could find all this just by asking anyone!" Kamiya Sanyō said.

Kamiya Keiyun nodded. That was understandable. After all, he had once been a Jonin, but now he had lost a leg and could no longer be one. Naturally, he would reminisce about the past from time to time.

"But everyone says he's bragging, so I don't know whether this intelligence is true or not," Kamiya Sanyō said.

"I'll judge that." Kamiya Keiyun looked at the thin sheet of paper and began analyzing it bit by bit.

Wind Style, Earth Style, Chakra Nature?

So that was the official term for using elemental powers? Then wouldn't Hatake Sakumo's be Lightning Style?

So, did Shimura Ken train his lungs? And what bodily system was Earth related to?

As for the jutsu listed afterward, Kamiya Keiyun felt the odds of boasting were low. It was obvious at a glance that these techniques came from the same lineage. No one could make something up with such detail.

"Vacuum Sphere. Tama means ball in Japanese, so this technique meant vacuum ball. How large was a vacuum ball? Did it cover someone and suffocate them, while creating a pressure difference to kill them?"

"Vacuum Wave was even harder to understand. How could a vacuum form a wave? Was it an area of vacuum constantly moving?"

Kamiya Keiyun was speechless. After obtaining the intelligence, he was stunned to realize that with his current knowledge, having intelligence seemed no different from having none at all!

He knew far too little about the ninja system. Kamiya Keiyun felt like some amateur scholar, learning a few terms and then wildly speculating. How was that any different from blind men feeling an elephant?

Fortunately, he could test some aspects of cultivation on himself. Most of his conjectures were based on his own experimental results, so they were not entirely groundless.

"This is troubling. But according to my deductions, this Shimura Ken had at least completed the training of one bodily system, perhaps even two. Hatake Sakumo had only displayed Lightning Style—didn't that mean Shimura Ken was even stronger than Hatake Sakumo?" Then he thought of Hatake Sakumo's terrifying combat power and his own cultivation progress.

Chakra Control training was fast at the beginning and slow afterward. Although Kamiya Keiyun improved every day, he had no confidence that he could complete the training of an entire system within a month.

Even taking one or two years would not be strange.

Especially since, due to his age, his Chakra reserves had never been able to increase much.

Therefore, if they competed in raw strength, Kamiya Keiyun was not confident he could defeat Shimura Ken.

"So I can only use another method. For example, poison!" Kamiya Keiyun shook his head. Mainly because he was a modern man.

Modern people rarely carried out assassinations like ancient assassins, killing someone with a sword while dressed in black.

People generally used sniper rifles, pistols, or dump trucks.

According to a certain Teacher Chen, if guns, cannons, or even rockets were available, one should use them all. If possible, it was best to use a nuclear bomb to ensure nothing could go wrong.

Kamiya Keiyun had no gun, so he could only choose poison. Poison had another advantage: this world's technological level was underdeveloped, so chemical toxins produced with modern technology generally would not be discovered.

The most famous chemical toxin was undoubtedly cyanide, but Kamiya Keiyun was not a chemistry major and did not know how to make it.

However, he really had learned how to prepare one poison in his own field.

Paraquat!

Paraquat was an excellent herbicide. It targeted only weeds and did not harm crops. After coming into contact with soil, it quickly lost its weed-killing activity, left no residue, did not damage plant roots, did not pollute the environment, did not corrode metal machinery, and could be stored at room temperature for more than two years.

Even more remarkably, it was not very toxic to animals such as poultry, fish, and bees, so it would not affect the ecosystem.

All things considered, it was practically the perfect herbicide.

Unfortunately, it worked too well on humans. Just 1 to 3 grams could completely kill an adult, and there was no antidote. Nearly everyone who drank it died. Even those who survived by chance suffered tremendous pain and would continue suffering in the years to come.

Although paraquat was a modern chemical agent, its technical requirements were not high. It had been synthesized as early as 1882, and the current era of the Hokage world could completely reproduce it.

But the problem was that the Konoha where Kamiya Keiyun lived was not an industrial village. He could not buy the raw materials even if he wanted to.

Even if he could buy them, he would not dare purchase them within Konoha. It would be far too easy to get discovered.

"Sister, does the family have any plans to travel outside recently?" Kamiya Keiyun asked.

"No." Kamiya Sanyō thought for a moment. "As far as I know, there aren't any. But I don't know whether Father has plans."

"You're getting married. Won't he invite relatives and friends to see you?" Kamiya Keiyun asked.

Kamiya Hiromi had family as well, all priests of the Inari Shrine, though they did not live in the same village as Kamiya Hiromi's family.

"I don't know." Kamiya Sanyō thought for a moment. "But if you need it, I can try persuading Father!"

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, Kamiya Hiromi had no reason to object.

Otherwise, he would be far too cold-hearted!

"Try it first," Kamiya Keiyun said. "Call me if it works!"

Eggs could not all be placed in one basket, so Kamiya Keiyun began considering other methods.

Mainly because this lead was too fragile. Although paraquat was not easy to detect, its poisoning symptoms were still obvious. If someone investigated those connected to Shimura Ken, the Kamiya Family could easily be exposed.

And then they would find that the Kamiya Family had recently left the village?

Wouldn't that expose them?

They would not even need Detective Conan. Any reasonably competent police officer could reach a similar conclusion.

"By the way, do you know whose family has kittens?" Kamiya Keiyun asked again.

"Ah, Miss Takahashi's family does. Her Taihu just gave birth to six kittens, and she's thinking of giving them away. I want one too, but Father won't allow it!" As expected of Kamiya Sanyō, who kept in touch with Konoha's bestie circle—she even knew about such trivial matters.

"I see. Let's go take a look. If we can, we'll adopt one," Kamiya Keiyun said.

"But Father..." Kamiya Sanyō hesitated.

"It's not a big problem. I'll say I want to train the cat into a Ninja Beast. He'll agree," Kamiya Keiyun said.

"That... makes sense!" Kamiya Sanyō understood. At this time, the family's most important task was Kamiya Keiyun's cultivation.

Just as parents in his previous life never begrudged money spent on study materials, the family would certainly support anything related to Kamiya Keiyun's path as a ninja.

Wasn't the reason they were marrying her off so that Kamiya Keiyun could enter that so-called Root?

So this reason really could work!

At that thought, waves of sorrow inexplicably rose in Kamiya Sanyō's heart.

In fact, this situation was common. There were plenty of girls in the village who were married off at twelve or thirteen. But she had absorbed some of Kamiya Keiyun's ideas, and she truly found it difficult to accept such a future.