Nicotine

"You're a madman." Kenichi Amamiya scratched his head as he looked at the weakened test subject before him. He did not particularly want to torture the test subject either, but he had no choice. At present, only the man possessed Cancer Cells.

If Kenichi Amamiya wanted to develop the ninjutsu he had envisioned, this was the only method he could take.

"Don't worry. I didn't come to scrape out your eyeballs today." Kenichi Amamiya sighed as he looked at the other man's bloody eyeballs.

The only thing he could confirm now was that Yang Release Chakra truly had the ability to stimulate the growth of Cancer Cells. However, this Lab Base could not achieve the conditions of a sterile laboratory, so Cancer Cells could not survive long outside the body.

Thus, for the experiment to continue, Kenichi Amamiya could only conduct live experiments directly, trying to inject Yang Release Chakra into the man's body to stimulate the Cancer Cells.

"Let me think. First, I inject Yang Release Chakra into his body. Then I need to establish a detection and identification mechanism, one that can find the Cancer Cells as quickly as possible..." Kenichi Amamiya thoughtfully wrote down his ideas.

In Kenichi Amamiya's view, if he wanted to develop this ninjutsu, the first thing he had to do was make his Chakra capable of entering someone else's body.

This was somewhat difficult. Although he had begun adapting to Hashirama Senju's powerful physique during this period, he still could not condense Yang Release Chakra and inject it into another person's body.

And even if he solved that step, there was another crucial difficulty: how could he make Yang Release Chakra act upon Cancer Cells?

After all, although normal people had Cancer Cells in their bodies, they were not like this test subject's, already developed and fixed in one location. Most people's Cancer Cells emerged throughout the body and were then eliminated.

He also had to account for what to do if the other person's body had no Cancer Cells.

"This is too troublesome. Why not just create a Cancer Cell directly inside his body, then make it grow rapidly? It would be more convenient, and I could control the site of the damage." Kenichi Amamiya suddenly smacked his palm.

He had overthought things before. There was no need to make it so complicated. He could simply create a Cancer Cell directly inside the other person's body.

After all, finding Cancer Cells among countless cells was no easy task and required considerable work. Creating one, however, was simple.

Kenichi Amamiya immediately became interested. This time, he did not touch the test subject's brain. The man's Cancer Cells were concentrated in his head, so he could try creating Cancer Cells in his lungs.

As for how to create Cancer Cells, Kenichi Amamiya had his own ideas. Normally, Cancer Cells arose when the DNA of normal cells was damaged, causing those normal cells to transform.

Of course, certain carcinogenic factors could also cause this. For instance, Nicotine from smoking could cause lung cells to transform into Cancer Cells.

If the Cancer Cells were not recognized and eliminated by the body at that point, they would develop into Lung Cancer.

The lungs were extremely important organs. People needed them to breathe, and Lung Cancer had a tremendous impact on the body.

"Want a cigarette?" Kenichi Amamiya smiled as he offered one over. There were cigarettes in the Naruto World. That was good news.

"..."

The test subject did not want to speak. He thought this man was absolutely insane. In his condition, and he was being offered a cigarette?

When the man refused, Kenichi Amamiya did not mind. He still knew how to extract Nicotine from cigarettes.

After dissolving tobacco in ninety-five percent alcohol and using the laboratory equipment to extract it, the Nicotine would be in the solution. It was not very complicated.

"What a pity Nicotine can't crystallize. It would be much more convenient otherwise." Kenichi Amamiya sighed.

Nicotine could be frozen while in liquid form, but Kenichi Amamiya had no need to do that. He poured the Nicotine solution into a spray device and sprayed it onto the test subject's chest.

"What are you doing?" The test subject was somewhat terrified. He did not know what Kenichi Amamiya was doing, and the fear of the unknown made his entire body tremble.

"Don't get so worked up." Kenichi Amamiya was very calm. Nicotine could be absorbed by the body even when sprayed onto the skin. If injected directly into a vein, it could even kill someone.

However, it was a toxin, so a ninjutsu like Delicate Illness Extraction could directly extract the Nicotine.

"Though it can be extracted, that requires a Medical Ninja. Without one, wouldn't they have no choice but to endure it themselves?" Kenichi Amamiya's eyes lit up. This could probably be used as a method of poisoning.

Kenichi Amamiya remembered that the Nicotine in twenty-five cigarettes was enough to kill an adult. But if it was injected directly into a vein, the amount of Nicotine in four cigarettes would be enough to kill.

"Still, it wouldn't be easy to inject Nicotine into someone else's veins these days." Kenichi Amamiya shook his head. Shinobi were not idiots.

Still, Kenichi Amamiya felt this was worth recording. Cigarettes were easy to obtain in the Shinobi World, and perhaps they could really produce some unique effects at times.

But then Kenichi Amamiya discovered a problem. The Physical Fitness of shinobi in the Shinobi World far surpassed that of people in his previous life, so whether the Nicotine content of a few cigarettes could kill someone still required experimentation.

Kenichi Amamiya turned his attention to the test subject before him. Determining how to make Nicotine affect the lungs precisely would require a large amount of experimental data.

With that in mind, Kenichi Amamiya decided to feed this unlucky fellow better food. That way, the man would have the strength to last until the experiment was over. It would not do for him to die too early. Where else would Kenichi Amamiya find a test subject?

"...What exactly did you do to this guy?" When Orochimaru returned, he saw the Hyuga Clan illegitimate child on the verge of death. If the man had not still been alive, he would have suspected that his disciple had killed him.

"Hehe, I ran a few experiments on him. I wanted to study how those special cells in his body came into being." Kenichi Amamiya smiled sheepishly.

Orochimaru had been gone for eight days, and Kenichi Amamiya had conducted experiments for eight days. At first, the man could still curse at him, but later he stopped speaking entirely, looking as though he had been completely broken.

Still, the research during this period had made some progress. At the very least, Kenichi Amamiya could now inject Yang Release Chakra into a target's lungs.

Do not imitate.