After arriving at the camp outside the village, Natsuo introduced himself to announce and register his presence.
Looking around, Natsuo wondered how many of the ninjas present would be able to return home.
Natsuo was one of the last to arrive, so he didn't have to wait long before the camp leader ordered everyone to start moving, and soon after, the 500 people headed towards the land of grass.
While the group was traveling, everyone was attentive to their surroundings.
Even with ninja scouts, anything could happen during their journey to the front lines of the war in the land of grass.
Especially now, when all the villages had special teams to ambush enemy ninjas.
Of course, not everyone could stay alert throughout the entire journey, so most quickly became bored and started chatting with their acquaintances, leaving security to the few ninjas from the Inuzuka and Aburame clans.
Meanwhile, Natsuo remained silent during the journey.
He knew many of his colleagues from his time at the hospital, but he didn't start a conversation and remained attentive to what was happening in the area.
During his years of experimenting with mice, Natsuo had experienced other things when his usual experiments did not progress in a short time, and one of them was the enlargement of his sensory organs.
Hoping to awaken the Sharingan, he researched how to enhance his ears and nose.
To achieve that, Natsuo captured a group of cats and dogs to study them before releasing them shortly afterwards to begin experimenting with mice.
After he obtained certain results, his shadow clones experimented on themselves before Natsuo did so with his own body.
In this way, his nose and ears efficiently captured external stimuli, and he had the same abilities as an Inuzuka and his ninken.
But although he was satisfied with what his nose and hearing could pick up around him, what Natsuo trusted most were his senses of natural energy.
For the moment, after being able to easily sense natural energy, his clones have now begun to try to fuse natural energy with their physical and mental energies to form Senjutsu chakra.
Since it was dangerous, his clones had strict orders to advance cautiously at extremely slow paces; after all, he was in no hurry.
For now, their clones will only take a minuscule amount of natural energy and fuse it with the same amount of physical and mental energy, and from there they will advance slowly, gradually increasing the amount.
That way, you can detect with less risk if something is wrong and stop the process immediately.
Meanwhile, although he had not yet been able to form Senjutsu chakra, Natsuo already possessed great sensory ability.
After all this time, during which his mental energy had grown in great quantity and he had spent a lot of time sensing the natural energy around him, Natsuo was able to unite everything his sensory organs picked up in his mind and form an ability he called Observation Haki.
With his ability to sense natural energy, Natsuo could also sense the life energy of living beings around him.
In addition to all the ninjas traveling with him, he could also sense all the animals that were nearby.
At the moment, its maximum capacity was 4 kilometers and being able to expand it to 5.5 kilometers by lowering the quality of what it could feel.
Of course, if he only concentrated within a few meters of himself, his ability increased, and he was eager to test it in battle.
Thanks to his Observation Haki, Natsuo had one more resource to increase his chances of survival.
Throughout the journey, Natsuo chatted from time to time while remaining attentive to what was happening around him, and occasionally the group stopped to rest.
Luckily for the group, nothing happened during the entire journey and they arrived 3 days later at the land of grass and it took them half a day longer to reach the leaf village camp in the territory of the land of grass.
As they approached the camp, a ninja stepped forward to announce the group's arrival and prevent the camp's explorers from mistaking them for enemies.
After a while, the ninja returned and the group followed him back to the camp.
While the group leader went ahead to handle several details, the group entered the camp and looked around.
Besides the numerous tents, what was striking was all the pairs of eyes that greeted them.
And as expected in a war zone, none of them had a smile on their face.
Suddenly, the group leader returned and began guiding everyone to their respective places of residence in the camp.
Since Natsuo was a medical ninja, he was assigned to a special tent and many ninjas were guarding him.
It would be a tragedy if the medical unit were eliminated by the enemy, so this is a heavily guarded area.
After handing over his identity documents, he was allowed entry and directed to a tent.
Although he had to share the tent with many other medical ninjas, the tent was cleaner compared to the rest of the camp, so Natsuo didn't complain.
Of course, Natsuo didn't have much time before he and the doctors who came with him were taken to the tents where the wounded were being treated.
When he arrived, Natsuo saw several people helping to carry many injured people back to the village.
Among these wounded, many could not continue their ninja careers and would be a hindrance in this place.
In addition to them, they will be accompanied by ninjas who received injuries that drastically reduced their battle abilities, so although they could still be ninjas, they could not contribute much during the war and would be a hindrance.
Seeing many of them without arms and/or legs, Natsuo sighed at the consequences of the wars.
Not wanting to end up like that, he reminded himself that he should never slack off on his training.
While this group was preparing to return to the village accompanied by several ninjas for their protection, Natsuo's group would be here covering the missing numbers.
Changing his view of the group, Natsuo entered the medical tent and introduced himself to be assigned his job.
When they arrived, the doctors breathed a sigh of relief and assigned them several patients awaiting treatment.
Looking at all the injured in the beds, Natsuo sighed before quickly getting to work.
.
.
.
The days passed as Natsuo used his skills to treat the wounded.
Quickly, those days turned into weeks and then into months.
And soon, Natsuo had been at the camp for more than half a year.
Although at first the other doctors at the place didn't think much of him since they hadn't heard the news within the village, they were quickly surprised by his abilities and heard from the group that came with Natsuo about his name.
Because they had someone capable with them, everyone was happy to have someone else to lessen the workload and save more lives.
"Don't use your arm for the next few days and we'll see how your recovery progresses."
"If everything is alright, you'll be able to use your arm normally after a few weeks," Natsuo told the ninja whose severed arm he had reattached.
"Thank you," the ninja said gratefully to the boy in front of him.
After checking on the patient and giving him some medication, Natsuo moved on to the next one.
The previous patient was very lucky to have encountered a ninja from the Stone Village with an affinity for the wind element, and he only cut off his arm.
The ninjas of Iwa village typically had an affinity for the earth element, and their attacks always devastated their targets, so many lost limbs with no possibility of reattaching them.
"Help!" someone shouted.
Like the ninja who was carried by a fat ninja.
Since everyone else was busy, Natsuo ca
me over to help.
Upon closer inspection, the injured man had a hole in his stomach and was missing a leg.
Natsuo could guess that he had been pierced by stone spears and most likely there wasn't much left of his leg to put back together.
"Bring him here!" shouted Natsuo and guided the Akimichi clan ninja to an empty stretcher where he placed the injured man.
Without saying anything else, Natsuo tore off the injured man's clothes and used a hand seal to
form water and clean the wounds.
After cleaning up the blood, Natsuo's hands were bathed in green chakra and he stopped the bleeding before beginning to treat the wounds.
The ninja from the Akimichi clan watched the whole process attentively and only relaxed half an hour later when his friend's stomach wound closed.