Naruto started to become stronger by becoming a disciple of Tsunade

Because Okamoto Dousuke was treating the three Uchiha clan members who were contaminated by natural energy, he had been frequently going in and out of the Uchiha clan territory in recent times.

The Uchiha clan members gradually became familiar with Okamoto Dousuke. After all, no one wanted to offend a medical ninja with excellent medical skills on the battlefield.

Moreover, with Uchiha Fugaku's conscious contact, Okamoto Dousuke's relationship with this branch of the Uchiha clan became increasingly familiar, and his relationship with Fugaku gradually became a rare friendship.

Soon, Okamoto Dousuke appeared at the door of the medical department. Uchiha Fugaku, who was following closely behind him, also stood firm behind him.

"Haven't you already used potions to treat the wounded? Why are you still like this?!"

Hearing Fugaku's question, Okamoto Dousuke turned his head and said, "It's different. When the healing potion was used on the wounded, it was in a relatively safe environment in a camp. If it was after a fierce battle or on the battlefield, it is unknown whether there would be time to use this potion."

"Dousuke, the research on the healing potion is already good enough, you don't need to put too much pressure on yourself." Uchiha Fugaku said cheerfully.

In the past few months, thanks to Orochimaru's help, Okamoto Dousuke has made rapid progress in the research and development of therapeutic drugs.

During this period, Okamoto Dousuke used therapeutic drugs on the wounded and found that the therapeutic effect was best if the therapeutic drug was freshly prepared.

If you delay for too long, the treatment effect will be greatly reduced.

Moreover, this therapeutic agent only has a strong healing effect on wounds, but cannot take into account the presence of toxins.

Aunt Snake is worthy of being the future technological leader in the ninja world. With just a few small suggestions, she was able to extend the shelf life of the healing potion from a few hours to the current three days.

That's right, three days. Okamoto Dousuke reached out and touched a test tube in his pocket. Inside was the latest treatment drug that had been developed recently.

But unlike the previous light green healing potion, this healing potion is a slightly whitish liquid.

He pulled the slightly whitish potion out of his pocket and pressed his thumb against the stopper on the bottle.

Fine chakra was released from the tip of the thumb, touching a seal on the stopper. A stream of light green chakra instantly dyed the entire test tube green.

This is the solution provided by Orochimaru, using sealing techniques to seal the healing technique on the stopper of the bottle.

When used, activate it with chakra to get a healing potion.

When Okamoto Dousuke heard the suggestion from Orochimaru, he was completely confused.

According to this statement, why not just seal the healing spell in the scroll? Why bother with this unnecessary effort?

Later, after experiments, Okamoto Dousuke discovered that there is a healing technique called palm magic. It is through the continuous combination of chakra in the body of the practitioner with the cells in the body to produce chakra with healing power.

The application of medical ninjutsu is when chakra is released, combined with Yang escape chakra.

Where does the Yang-Tun Chakra come from? Okamoto Dousuke speculated that when the practitioner extracts it through the cells in the body, the chakra will carry the life force of the cells, which is the Yang-Tun Chakra.

Only then will chakra with healing power be produced, thus achieving the healing effect.

Directly seal the medical ninjutsu. The sealed chakra will not interact with the cells in the caster's body, and will not be able to interact with the Yang Release chakra.

If the Yang Release Chakra cannot be exchanged, then the healing technique is no longer a healing technique, so it is not feasible to directly use the sealing scroll to seal the medical ninjutsu.

The natural energy in the harmonized water of the Wet Bone Forest can absorb the free natural energy in the air. The slug clan is a race suitable for medical ninjutsu.

The liquid secreted by the slugs also has the properties of Yang escape chakra. Therefore, activating the seal of the healing time bottle will produce healing chakra with the liquid in the potion, which has the effect of healing wounds.

However, because the seal is immersed in liquid containing natural energy, the natural energy in the liquid will slowly corrode the seal at the mouth of the bottle, causing the seal to fail.

The chakra of the healing technique will slowly leak out, and this period of time is about three days.

So if you don't use it within three days, this bottle of healing potion will become invalid.

Moreover, the healing power in the therapeutic potion will be released into the liquid of the potion after activation. It can be taken orally and can effectively relieve and treat injuries to internal organs.

Uchiha Fugaku stood behind Okamoto Dousuke, looking at the light green test tube in the boy's hand, and his scarlet Sharingan shrank slightly.

"What an amazing invention, Dousuke. You might change the ninja world in the future."

After becoming familiar with Okamoto Dousuke, Uchiha Fugaku also knew what happened that day. At the beginning, he was dismissive of Okamoto Dousuke's so-called healing medicine.

He didn't quite believe the boy in front of him who was less than ten years old.

It was not until several months later when Dousuke Okamoto excitedly ran to his tent and showed him his discovery that he realized that the boy in front of him had actually done it.

He later found out that in the beginning, Okamoto Dousuke used the healing power of his own experimental medicine.

After the experiment was almost complete, we started to experiment on the wounded.

After the wounded treatment experiment is completed, the next step is to verify the preservation ability of the treatment agent and its treatment ability on the battlefield.

The three Uchiha who were injured last time were willing to serve as experimental subjects at the instruction of Uchiha Fugaku.

Everyone rushed to the battlefield with several healing potions of different dosages.

To experience the effect of healing potions in the War of the Century, this was originally a task that Okamoto Dousuke was supposed to do personally.

But he was stopped by Orochimaru who came. Now Okamoto Dousuke is like the spring water of Konoha camp. Although this spring water has no resurrection effect, it also greatly reduces the death rate of Konoha ninja.

Because most of the people who are qualified to be treated by Okamoto Dousuke are Chunin or above, this has earned Okamoto Dousuke great reputation in the Konoha Ninja Army.

Now when Okamoto Dousuke walks in the Konoha camp, the ninjas who have been rescued by him often call him Dousuke-kun.

Not only did Orochimaru not let Okamoto Dousuke go to the front line, he also ordered Uchiha Fugaku to protect him in case of any accidents.

This is why Uchiha Fugaku followed behind Okamoto Dousuke at the beginning. You should know that at this stage, Uchiha Fugaku has already earned the title of Fierce Eyes Fugaku on the battlefield with Sunagakure.

Having a ninja who made a name for himself on the battlefield of Sand Village be personally protected is enough to show how much Orochimaru cares about him.

Finally, the task of experimenting with the healing potion was given to three Uchiha ninjas at Fugaku's recommendation.

"Kotaro, what happened?" When Okamoto Dousuke saw the Uchiha members returning, he anxiously asked the leading ninja.