Inside his mind palace, Natsuo entered a certain room and found 4 books with information that his clones had sent during the day.
Since urgent information was categorized as such and Natsuo reviewed it almost immediately, the rest of the information sent by his clones was stored in this room for him to review when he had free time like now.
Reviewing one of the early books, Natsuo obtained data and experiences from his clones experimenting with strengthening muscles, tendons, and bones.
Because it was something he considered very important, his clones had been ordered not to rush and to proceed step by step, so the results were slow in almost half a year of experiments.
So far, they have been able to strengthen the muscles, tendons, and bones of each test subject by 35% without side effects.
They could also increase the strengthening to 40% with some negative side effects such as constant pain, and up to 50% with extreme pain and atrophy in all the strengthened areas.
After a few days, the test subject's body, with 50% strengthening, will begin to collapse and he will die if he is not treated in time and the procedure is not reversed.
Satisfied with these results, Natsuo organized this information in his mind palace before reviewing the second book.
The second book contained information about the Ninjutsu training of his shadow clones.
Knowing that he had a small repertoire of Ninjutsu and Genjutsu, he took advantage of his dealings with the Uchiha clan leader to obtain several B-rank Ninjutsu and Genjutsu scrolls.
And for the past few months, his shadow clones have been practicing these Ninjutsus and Genjutsus, taking advantage of the time to gain battle experience as well.
By fighting each other, Natsuo was able to gain a lot of experience in the use of these Ninjutsu and Genjutsu.
However, since shadow clones are easily destroyed, the battle experience he gained was also minimal.
Of course, as his shadow clones reach a point in their ability to cast Ninjutsu and Genjutsu, Natsuo will order his shadow clones to seek out enemy ninjas and fight them.
After organizing this information in his mind palace, Natsuo prepared to review the third book, which he knew was about training his shadow clones on Fuinjutsu, and the fourth book was about his training with natural energy.
Suddenly, new information arrived, categorized as urgent, and Natsuo reviewed it immediately.
Seconds later, Natsuo opened his eyes in his tent as he thought about how lucky he was.
His clones had captured a White Zetsu.
Natsuo always wanted to capture and study the body of a White Zetsu, but he knew the high difficulty and low probability of that happening anytime soon.
The reason for the difficulty in catching a White Zetsu lies in its great hiding abilities, and Natsuo hoped to learn Senjutsu first before he could discover a hidden White Zetsu and try to catch it.
But his shadow clones gave him a surprise when they discovered a White Zetsu traveling across the land above one of his secret hideouts.
All of his secret hiding places were 100 meters underground because Natsuo didn't want a skilled sensor to sense the movement of his shadow clones when they entered or left those hiding places, and because he also knew about the existence of White Zetsu traveling all over the continent to spy for Madara.
And proving him right, that white Zetsu was traveling high above his secret hideout in the direction of the land of fire.
The way his shadow clones managed to discover this white Zetsu was thanks to his experiments to create sound jutsus.
Recalling the sound jutsus that appeared in the series, Natsuo ordered a group of shadow clones a few weeks ago to create these jutsus, and a few days ago they succeeded.
Since then, these shadow clones have been creating sound-based jutsus and created a jutsu that used vibrations to explore the environment.
This Jutsu also worked underground, and that's how they discovered this white Zetsu.
Acting on impulse, this group of shadow clones disguised themselves using the Transformation Jutsu and surrounded this White Zetsu.
Using a swift earth jutsu, they expelled this white Zetsu into the air, and one of them immediately appeared beside him.
The White Zetsu only had time to make a surprised face before fuinjutsu lines appeared on his body and he lost consciousness.
With the White Zetsu trapped, the shadow clones immediately sent the information and Natsuo knew he had to act fast.
Because the White Zetsu had mental connections to send information, Madara could know everything that was happening on the continent while remaining hidden.
Natsuo knew this from the series and immediately ordered his shadow clones to abandon all nearby hiding places and destroy them before leaving.
Natsuo quickly wrote his new orders on a scroll before forming a few hand seals and pressing his hand against the ground, performing a summoning jutsu.
With a puff of smoke, a box appeared in front of him and he quickly opened it before placing the parchment inside and closing it again.
A few seconds later, the box disappeared in a puff of smoke when it was summoned back.
Since he can't leave the base every time to send a shadow clone without being discovered, Natsuo created several of these boxes as a method of communication between himself and his shadow clones.
Natsuo filled these boxes with contract seals, and he and his shadow clones could summon them whenever they wanted.
If his shadow clones wanted to send him information, they only had to disperse.
And if they wanted to send something material, they would place it in this box before dispersing a shadow clone and telling it to summon the box.
Similarly, if he wanted to send something or send information to his shadow clones, he would summon this box and a clone in charge of watching over this box would summon him again 10 seconds later.
Hours later, Natsuo received information about his new bases and sighed with relief when nothing bad happened.
And the next day, he sighed again when he received new information from a shadow clone who had stayed behind and found no more White Zetsus arriving to look for the lost White Zetsu.
For now, this shadow clone will stay there to continue watching over the place.
If no White Zetsus arrive in the next few days to look for their lost comrade, it means that the White Zetsus have to activate their mental connections on their own and cannot know if one of them is caught quickly enough.
If that is confirmed, his shadow clones can begin searching for and capturing White Zetsus on the battlefield.
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During the following weeks, Natsuo's work as a doctor was slow.
Tacitly, both countries reached a silent agreement and only had minor battles.
The war had not stopped, it was just that both sides had slowed down a bit and were busy gathering more supplies and resting a little for the next war.
While Natsuo had free time now that the injured were being treated by other doctors, his clones kept sending him good news.
His research and experimentation with the bodies of the captured White Zetsus was going wonderfully.
When he realized that no more White Zetsus had arrived to investigate the disappearance of their partner, his shadow clones began hunting them down and quickly captured dozens of them in the following weeks.
Since Madara wanted to know how the war was going, he had sent many White Zetsu to the battlefield in the Land of Grass, and Natsuo's shadow clones took advantage of the situation.
Using several test subjects, Natsuo's shadow clones conducted various tests on bandits using the cells of a White Zetsu and drew several conclusions.
Unlike Hashirama's cells, the cells of a White Zetsu are less aggressive and could be adapted to the human body.
An
arm or a leg could be replaced, and the bandit could walk and run normally without negative side effects.
What about the positive side effects?
The test subjects could now use Wood Release Ninjutsu.
After so much experimentation with these bandits, Natsuo developed his chakra pathway system. And to prevent any rebellion, he erased all their memories.
In this way, these bandits could be easily influen
ced by Genjutsu and Natsuo could conduct better tests on them.
In this way, Natsuo was not afraid that these bandits would cause accidents.
With a smile, Natsuo reviewed the memory a clone sent showing these bandits injecting chakra into the ground and a branch sprouting from the earth.