The Chakra Scalpel was an A-rank ninjutsu.
It had originally been developed as an advanced medical technique meant to save lives.
But the Chakra Scalpel itself possessed considerable destructive power.
Combined with a solid understanding of anatomy and medicine, it could give a medical ninja surprisingly formidable combat ability.
For genin, chunin, and even ordinary jonin, an A-rank technique could easily serve as a trump card.
And for medical ninja, the Chakra Scalpel was practically the only conventional medical technique capable of directly increasing combat strength.
Even so— not everyone could learn it.
Among A-rank techniques, the Chakra Scalpel was considered particularly difficult to master.
A medical ninja capable of using it was also extremely valuable on the battlefield.
Because the technique could function as a surgical blade without requiring ordinary operating conditions, treatment could be performed even in harsh environments.
That alone could greatly improve the survival rate of injured teammates.
Many of the medical ninja around Koji had personally experienced war.
So when they watched him casually form a Chakra Scalpel, their previous confusion finally disappeared.
Now they understood why Director Kudo—someone who usually held exceptionally high standards—had personally taken along a newly qualified medical ninja.
Learning the Mystical Palm Jutsu was certainly impressive.
But at least Koji had possessed a scroll for that.
Learning the Chakra Scalpel in such a short time without systematic instruction was something else entirely.
The mild-mannered young man standing before them…
might genuinely possess medical-ninjutsu talent comparable to that person.
“Director Kudo certainly has an eye for talent.”
Over the next several days, Yuya heard variations of that sentence constantly.
And every single time— she felt as though someone had handed her a spoonful of honey.
Even the exhaustion of an entire day’s work seemed to disappear.
When Yuya entered the training room, Koji was already waiting.
“Today, I’ll teach you how to treat poisoned shinobi.”
She wasted no time getting to the important material.
“There are many ninja in the shinobi world who specialize in poisons. If you ever find yourself on a battlefield, there’s a very good chance you’ll encounter poisoned comrades.”
As Yuya demonstrated the treatment process and explained each step, Koji steadily absorbed the information.
Once the basic procedure was finished, Yuya suddenly added,
“Actually, there is another method of detoxification.”
“It is simultaneously one of the simplest methods… and one of the most complicated.”
The moment Koji heard that, a technique from the original story came to mind.
The technique Sakura Haruno had used to treat Kankuro.
The Delicate Illness Extraction Technique.
It was only a B-rank ninjutsu.
Yet the chakra-control requirements were even higher than those of the A-rank Chakra Scalpel.
“If it’s you, you may actually have a chance of learning it.”
Yuya walked over to one side of the room and picked up a scroll.
“This contains the complete technique. Study it carefully when you have time.”
She placed the scroll nearby and then turned around and left.
Ever since Koji had demonstrated the Chakra Scalpel, his daily routine had changed again.
His mornings were now spent following Yuya through the hospital and helping with actual medical work.
His afternoons belonged to training.
Fortunately, this particular training room contained a large collection of medical books because of Yuya’s position. You are reading on g.com, the official source.
Koji couldn’t have been happier.
If he could read through everything stored here, then he would finally possess enough knowledge to begin the first stage of his real plan.
He had already participated in several transplant procedures.
By now, he understood most of the important precautions involved.
His Mystical Palm Jutsu wasn’t far from another Limit Break either.
That was especially good news.
Of everything his system provided, Koji believed the traits gained through Limit Breaks were the most likely things to help him achieve what he wanted.
The Mystical Palm Jutsu was frequently used during transplant procedures.
Its Rapid Healing trait was extremely useful.
But there was still one issue.
Rejection.
Or rather…
the shinobi world’s concept of transplant rejection seemed strangely underdeveloped.
Once a medical ninja successfully closed the wound using the Mystical Palm Jutsu, rejection reactions often seemed to simply disappear.
From the perspective of someone who remembered modern medicine from his previous life, Koji found this extremely difficult to understand.
Still— that was actually good news.
Perhaps the Mystical Palm Jutsu itself was responsible.
Or perhaps chakra somehow altered the body’s response.
Without proper experimental cases, Koji couldn’t determine the exact reason yet.
But at least he finally had a general direction.
What he lacked now…
was research material.
Unfortunately, while living inside Konoha, there was currently no safe way for him to obtain experimental subjects.
For now, the only thing he could do was patiently accumulate proficiency and see whether his cheat could eventually produce some useful solution.
As for the Delicate Illness Extraction Technique scroll Yuya had left behind—
Koji only studied it briefly.
Then he stopped taking it particularly seriously.
Not because the technique was useless.
Quite the opposite.
It was simply…
too easy.
The foundation of medical ninjutsu was chakra control.
And chakra control had never been a problem for Koji.
If anyone demanded proof, his system panel provided the clearest possible answer.
[Chakra Control — Limit Break +4 (7.6%): Precision +4, Stability +1]
The Delicate Illness Extraction Technique required more than extremely precise chakra manipulation.
The user’s control also had to remain exceptionally stable.
Otherwise, instead of extracting the harmful substance from the patient’s body…
the medical ninja might accidentally send the patient straight to the afterlife.
For Koji?
That wasn’t a concern.
Because he had a cheat.
After learning the Delicate Illness Extraction Technique, Koji threw himself completely into the sea of medical knowledge around him.
His overall medical ability steadily increased.
Yuya visited the training room several times during this period.
On more than one occasion, she seemed to want to say something.
But every time she saw Koji studying with complete concentration, she ultimately chose not to interrupt him.
And just like that— half a year passed.
Koji finally closed the last medical book in the room.
A faint smile appeared on his face.
Finally.
He had finished them all.
Konoha truly deserved its reputation as the shinobi village with the most advanced medical system in the world.
Koji had now read every medical text available to him within Konoha Hospital.
Many of the questions that had once troubled him had gained entirely new answers.
And his confidence in his plan had increased considerably.
Perhaps…
it was finally time to start planning how to obtain some research materials.
Of course, before doing that, he would still need to strengthen certain abilities specifically for the task.
After all— valuable materials weren’t exactly going to be handed to him politely.
If he wanted them…
he would most likely have to take them by force.
“How did it go?”
Koji had barely returned the final book to its original place when Yuya pushed open the door.
She had been under considerable pressure while allowing him to remain in closed-door study for so long.
A medical ninja capable of using both the Mystical Palm Jutsu and Chakra Scalpel would have significantly reduced the hospital’s workload.
If Koji had never existed, nobody would have complained.
But now that such a medical ninja was available and still wasn’t being assigned to patients…
some of the hospital staff had naturally grown dissatisfied.
As time passed, all sorts of comments had begun circulating.
Yuya had ignored them.
She chose to trust Koji.
“Very well.”
Koji smiled.
“I can hardly wait to put everything I’ve learned into practice.”
When he first arrived, Koji had privately thought of Yuya as little more than a useful NPC.
But after half a year of genuine care and guidance from her…
he was sincerely grateful.
“In that case, come with me.”
Yuya visibly relaxed.
“We happen to be extremely short-handed right now.”
Now came the real test.
It was finally time to see exactly what Koji had accomplished during the past six months.