"These ninja are in pretty good shape," Amemiya Kenichi observed with interest, watching the rise and fall of the chest before him. "And they seem to have some resistance to Yang Chakra."
To get a better look, he even removed the ribcage. The test subject wouldn't last long now, but Amemiya Kenichi didn't care.
He had just successfully triggered cancer in the ninja's lungs. The first signs of the disease were already appearing in his body.
"Cough, cough, cough!" The test subject began coughing. Amemiya Kenichi silently increased the flow of Yang Chakra, trying to precisely target the established cancer cells.
What are cancer cells? They're malignant cells that steal nutrients from healthy cells to fuel their rapid growth and division. Now, these cancer cells had an even greater supply of life energy.
Almost visibly, the cancer cells began spreading much faster. The test subject started coughing up blood and struggling to breathe.
"My hunch was right," Amemiya Kenichi thought, a hint of excitement in his voice. "Yang Chakra can stimulate cancer cell growth, allowing me to artificially induce cancer in a target's body." He had achieved preliminary results.
If he could now systematize this process and determine the success rate through further experiments, Amemiya Kenichi could confidently declare he had created a unique Ninjutsu.
"But I remember a medical Ninjutsu called the Subtle Illness Extraction Technique, which can remove toxins and such," Amemiya Kenichi mused, stroking his chin. "That technique probably wouldn't work against my method."
At this point, Amemiya Kenichi could precisely inject Yang Chakra into the cancer cells. He had also observed early signs of metastasis.
If the cancer spread extensively, it would be a death sentence in his previous life—time to book a cremation and wait to die.
Amemiya Kenichi stitched up the patient and handed him over to the medical team at the base, instructing them to do whatever they could to save the poor guy.
Amemiya Kenichi wanted to see if the Ninja World could truly conquer cancer. If they could, the practicality of his ninjutsu would plummet. If not, he would possess a forbidden technique worthy of being banned.
"Are you finished with your experiment?" When Amemiya Kenichi found his teacher, he saw two dead ninjas lying on Orochimaru's lab table.
A strange odor lingered in the air, and dust covered the table.
Impure World Reincarnation?
Kenichi instantly recognized the unique forbidden technique.
"Yes, Teacher. The experiment yielded some results. I've handed the test subject over to the medical team to see if they can cure him," Kenichi said respectfully, feigning ignorance.
"Hmm, don't forget to train your ninjutsu. That's what sustains us as ninjas," Orochimaru nodded. He was known for delegating authority.
Or perhaps he believed in trusting those he employed completely. Overall, he was an excellent leader, though his cold ruthlessness was also a defining trait.
"Understood, Teacher," Amemiya Kenichi nodded. He had devised a plan for himself:
First, he would focus on ninjutsu and physical training—these were non-negotiable. Next, he would complete the tasks assigned by his teacher. Finally, he would continue researching and refining the cancer-inducing ninjutsu.
After obtaining Senju Hashirama's Sage Body, Amemiya Kenichi's body had gained a vast reservoir of Yang Chakra. The only disappointment was that he hadn't mastered Wood Release.
This left him somewhat disheartened. Wood Release remained an extremely powerful technique in the Ninja World, and with it, he could capture and study the Tailed Beasts.
The thought of those creatures, each with unique abilities and immense power, made Amemiya Kenichi's mouth water. Though the Tailed Beasts might seem less impressive later on, their fundamental strength remained considerable.
Otherwise, they wouldn't be considered such vital assets by the Ninja Villages, their status comparable to nuclear weapons.
"I have a ninjutsu I plan to teach you," Orochimaru said, still seated calmly. Yet when he spoke, Amemiya Kenichi felt his heart skip a beat.
After all, this scene left Amemiya Kenichi with no choice but to overthink. The Impure World Reincarnation was an incredibly powerful Forbidden Technique. While it required the summoner's bodily tissues, the Ninja World didn't practice cremation.
There were countless cells from the First Hokage here, and Amemiya Kenichi even knew the location of the Second Hokage's grave.
"Teacher, is this a Lightning Release ninjutsu from Kumogakure?" Amemiya Kenichi asked, feigning excitement. He couldn't appear too knowledgeable; given his theoretical strength, he shouldn't have any access to Konoha's Forbidden Techniques.
"No, it's another powerful but extremely dangerous Forbidden Technique," Orochimaru said casually, tossing a scroll to Amemiya Kenichi.
Amemiya Kenichi opened it and saw the words "Impure World Reincarnation" emblazoned across the top.
Even though he'd suspected this was the technique, seeing it confirmed made his heart race. After all, this Forbidden Technique was truly formidable.
"What are your thoughts after reading it?" Orochimaru asked, taking a sip of tea and glancing at Amemiya Kenichi. He wanted to gauge his chosen disciple's reaction to this Forbidden Technique.
"It's incredibly powerful, but also a dangerous ninjutsu. It's highly practical, but using it would cause a lot of trouble." Amemiya Kenichi had already finished reading the scroll; it wasn't very long.
"Why do you say that?" Orochimaru asked, his expression unreadable.
"Because it can revive the dead. It's a ninjutsu that desecrates the deceased, and using it would inevitably draw the hatred of many." Amemiya Kenichi sighed inwardly. His teacher always loved asking questions he already knew the answers to.
He couldn't believe Orochimaru, of all people, couldn't see such an obvious truth. After all, he was Orochimaru.
"But it's also immensely powerful. If we could restore the revived to even a fraction of their original strength, they'd be invaluable combat assets. And we wouldn't have to worry about other problems." Amemiya Kenichi shrugged.
The Impure World Reincarnation technique was indeed formidable. Take the Nine-Tailed Beast Uprising, for example. If the First and Second Hokages had been reincarnated then, how would the Nine-Tailed have stood a chance?
"Then I'll teach it to you. Dare you learn it?" Orochimaru smiled.
"Of course I dare!" Amemiya Kenichi nodded eagerly. It was a Forbidden Technique, after all. Only a fool would refuse.