In Naruto World with Mastery System.

3rd Shinobi War, Border of Land of Fire, Deep Forest.

"Ha!..ha!..ha!.."

A seriously injured young man with a Konoha forehead protector on his forehead ran forward panting and struggling, his legs were sore and swollen, but he couldn't hold on anymore, and fell to the ground feebly.

*Swish!*

At this moment, a man with an Iwa forehead protector on his forehead appeared in front of him.

"Little brat, why don't you run away? Could it be you can't run anymore?"

The man laughed contemptuously.

"Since you can't run anymore, then I will send you now to accompany your fallen comrades!"

Uchiha Ryu closed his eyes in despair. He laughed at himself at the corner of his mouth. If he died, he would die. It was not the first time he died anyway.

But at this moment, a cold monotonous voice rang out in his mind.

*Ding! It was detected that the owner was in danger of life and death, and the "999x Mastery System" was activated in advance...*

The moment the icy voice sounded, Uchiha Ryu suddenly felt full of power, and to be precise, he recovered from a critically injured and dying state to his peak state in an instant.

Uchiha Ryu opened his eyes fiercely. As a transmigrator, he naturally knows what the sustem is.

Hope is rekindled, he no longer intends to wait for death like this.

His soul traveled from the Earth to Naruto World 15 years ago, this world where chakra and ninjutsu are used, strong are respected, and being weak was a sin.

He grew up as an orphan in Konoha in Uchiha Clan to be specific. And because of that, he thought he could reach the peak of this world knowing that he was an Uchiha and he has knowledge of the future as his advantage. How could he have thought that his cheat would not activate until he was 15 years old?

As he grew up, he discovered that his talent for every Shinobi aspect is extremely mediocre, at most he was slightly better than Uchiha Obito who was dead last in the class because of theoretical knowledge when he was in Shinobi School.

He was currently a Chūnin now, a war promoted Chūnin to be specific, his real strength was just mediocre Genin, and all this time he still not activate his Sharingan. Just yesterday, the temporary camp he was in was attacked by Iwa shinobis, leading to the situation now.

Overnight, the other Konoha Shinobis who were also staying in this temporary camp was annihilated and he escapes amidst the battle.

Thinking of that scene, Uchiha Ryu couldn't help trembling all over, clenching his fists, his eyes grew gloomy, and he wanted to grit his teeth.

But one Iwa Jõnin noticed him and began to chase, he kept running away, and the Iwa's Jõnin kept chasing him down.

When he escaped to the deep forest, he was finally exhausted. Fortunately, he activated the system in time, otherwise he will atmost die.

Uchiha Ryu suppressed the hatred in his heart, and the most important thing right now is to live!

Uchiha Ryu dodged sideways, avoiding the kunai coming from the front.

*Ding! Took a step, and gained experience for the 'Basic Step Technique'(999x)!*

*Ding! 'Basic StepTechnique' was mastered!*

*Ding! It is detected that the experience of the 'Basic StepTechnique' is maxed, and it is automatically upgraded to the 'Intermediate Step Technique'*

*Ding! 'Intermediate Step Technique' was mastered!*

*Ding! It is detected that the experience of the 'Intermediate Step Technique' is maxed, and it is automatically upgraded to the 'Advance Step Technique'*

*Ding! 'Advance Step Technique' was mastered!*

At this moment, voices bombarded his mind one after another, bombarding him for a while.

He felt that a large amount of comprehensive content about the 'Advance Step Technique' suddenly flooded into his mind, and he mastered this skill right away.

This system is too awesome!

Uchiha Rus's eyes were full of incredible colors. He just took a step to dodge in a moment and instantly mastered an advanced technique from the most basic step. How could there be such a magical thing in this world?

But he recovered immediately, now is not the time to be distracted, a little carelessness may lose his life.

The Iwa Jōnin was glaring at Ryu, seeing that he missed the attack just now, he was slightly surprised.

"Oh? Unexpectedly, you still have the strength to dodge."

"But what's the use? Since you are facing me a Jōnin, you a mere Chunnin will die today!"

A trace of light flashed in the Jõnin's eyes, and the dagger slash towards Ryu's neck again.

Although the Jõnin doesn't know why the Chūnin in front of him still has the strength to resist, he stopped thinking of it quickly because this is just Chūnin and is still seriously injured, he thought he can kill this Chūnin at will.

Ryu stared at the Jõnin in front of him with gloomy eyes, subconsciously stepping sideward, avoiding the attack with great ease.

However, he did not just dodge this time. As he dodge he clenched his right fist and punch Jõnin's face.

The moment he performed this stunt, that cold monotonous voice sounded again.

*Ding! It is detected that the experience of the 'Advance Step Technique' is maxed, it's required envisioning or insight to further upgrade!*

Suddenly, Ryu felt he can now create a new technique, thinking about many step techniques from various anime he watched, he felt that he can re-create them right now. And without further ado, he thought about the technique he needs right now.

*Ding! Requirements are fulfilled, and 'Advance Step Technique - Shave' was created!...*

*Ding! Throw a punch, and gained experience for the ' Basic Punching Technique'(999x)!*

*Ding! 'Basic Punching Technique' was mastered!*

*Ding! It is detected that the experience of the 'Basic Punching Technique' is maxed, and it is automatically upgraded to the 'Intermediate Punching Technique'!*

*Ding! 'Intermediate Punching Technique' was mastered!*

*Ding! It is detected that the experience of the 'Intermediate Punching Technique' is maxed, and it is automatically upgraded to the 'Advance Punching Technique'!*

*Ding! 'Advance Punching Technique' was mastered!*

Almost the same as before, a large amount of comprehensive knowledge flooded into Ryu's mind instantly, "Shave" and "Advance Punching Technique" was engraved into his muscle memories instantly mastering it.

Ryu was really surprised by the system. Before taking a random step, he obtained an advanced technique of the step technique, but now he has obtained an advance punching technique with a random punch, although it's just a foundation it far surpassed the professional boxer from the Earth.

Now that he already mastered the basic to advance foundation of techniques he can now create a basic to advance more sophisticated techniques or named techniques as long as he knows what the effects are and how to do it even if it's from different worlds like other anime.

For our information, advanced techniques can be the secret techniques that will be passed down to the family as inheritance, this alone can tell that it is not easy to obtain, yet it can be obtained so easily, is there anything more awesome than this in the world? Well Author-san, please don't exaggerate it because it's a basic operation of someone born in the Shinobi clan.

At the same time, on the other hand, because Ryu's speed was so fast, the Jõnin had no time to react, so he got hit heavily on the face by Ryu's fist breaking his nose.

"YOU FXXKER!..."

The Jõnin only felt a sharp pain in his nose, and he couldn't help but to held it to stop the bleeding. Holding his nose with his hand, his expression was ugly and his eyes were full of incredible color.

He couldn't believe that the speed of this weak Chūnin suddenly became so fast that he couldn't even react.

The Jõnin looked at Ryu with a grim look, how could this Chūnin become so fast suddenly, was he acting weak just now to lower his guard down?

Ryu smiled coldly, "It's my turn next!"

"FXXK Y-*BAAM!*"

Ryu didn't even let the jõnin complete his curse, he instantly displayed his newly created "Advanced Step" as he disappeared and reappeared behind the Jõnin.

*Ding! Executed a technique!' gained experience for the 'Advance Step Technique - Shave' (999x)*

*Ding! 'Shave' was mastered!*

After he is done with the small experiment, Ryu used "Shave" to disappear and reappeared at the side of the Jōnin follow by 'Advance Punch' smashing his fist at the Jõnin's cheek without leaving the slightest effort.

Ryu didn't let it end there as he disappeared and reappeared at the Jõnin's other side and punch his other cheek knocking several teeth away.

Ryu disappeared again and reappeared in front of the Jõnin then send an uppercut lifting the Jõnin one meter to the ground before falling to the ground with *a bang!*.

Ryu looked at the unconscious Jõnin in front of him, and there was no trace of hesitation in his eyes only ferociousness, he picked the kunai on the ground and then slashed it to Jõnin's neck instantly killing him.

Walking away from the corpse he found a rock and sat down.

Ryu raised his head slightly and sighed, the system finally activated, and he finally didn't have to endure his suffering.

A gloomy color flashed in his eyes. With this system, he must survive this war!

At this time, he recalled the performance of the system just now. It seemed that no matter what he did, as long as it is active, he could get 999x experience enhancement, and the name of hiz System was also called "999x Mastery System".

Suddenly, a thought came up in Ryu's mind.

If this is the case, can Sharingan also be turned on and gain a 999x boost?

To confirm his guess, Ryu couldn't wait to start practicing.

Suppressing the excitement in his heart, he quickly entered a state of meditation. He recalled how to activate the Sharingan. By experiencing a powerful emotional condition, but isn't his life and death situation just now emotional? Why did his Sharingan not activate? Could it be he doesn't have the blood of an Uchiha? Could it be he was just picked up and misplaced as a kid of a deceased Uchiha couple or his father was ntr'd?

The more Ryu thinks the more it goes complicated.

At this time, it had been more than half a minute since Ryu had just started meditating his thoughts, but his thoughts were just getting worse.

Suddenly, a powerful mental power was produced by him making him slightly dizzy.

Then he heard a System prompt...