1 Chapter 1 - Uchiha Yusuke

Not far from Hidden Leaf Village, the sounds of a struggle could be heard in the forest. The two teenagers fought fiercely with each other. One of them is wearing a green bodysuit with a funny mushroom-like hairstyle, thick eyebrows, tight lips and a wide chin. Might Guy is a man known for his strong character and unwavering will.

His opponent is a boy, about his age with black hair, handsome features, a strong chin and calm eyes. Dressed in the standard Hidden Leaf Shinobi uniform with a forehead protector tied to his left arm. The only difference from the standard uniform is the emblem on the back. Instead of a red circle with a black swirl, the emblem of the powerful Uchiha clan flaunts there in the form of a paper fan.

The two continued to strike each other accurately and quickly, causing strong gusts of wind. Although both are still quite young, their physical fitness and strength were no worse than those of well-trained adult men.

"Yusuke, this time I'm going to win!" Guy shouted loudly, and with a determined gleam in his eye, he prepared to deliver the decisive blow.

"Stop!" - But unfortunately, Guy had not yet managed to make a move as Yuusuke called him to stop.

"What is it, are you already giving up?!" A spark of joy flashed in Guy's eyes when he realized that Yuusuke had taken the initiative to stop the fight, which in his opinion can be considered an admission of defeat.

"Not this time, it's just that you got too carried away again, Izumi is already here," Yuusuke said grinning while looking at Guy.

"Brother, dinner is ready, mom told you to hurry home!" Yuusuke barely managed to finish when a little girl in a purple long-sleeved shirt and baggy dark blue pants ran out of the forest towards them. The little girl's full name is Izumi Uchiha, she is Yusuke Uchiha's younger sister, chubby with baby fat on her cheeks, long brown hair tied in a ponytail with bangs framing her face, black eyes and a mole under her right eye, making her look very cute and playful.

Seeing the girl, Guy nodded disappointedly. She and Yusuke had long ago made a rule that as soon as Izumi appeared, their fight would be stopped. What Might Guy didn't know was that Yuusuke had set this rule because of his excessive pushiness. It was because once Guy started fighting, it was very difficult to stop him, which is why Yusuke had to resort to such a trick.

"Well, then next time I will definitely win!" Guy quickly came to his senses and with a cry *power of youth* ran towards the exit. As he walked past Izumi, he revealed his dazzling smile and gave a thumbs up. Izumi smiled sweetly and gave him a thumbs up as well.

Looking at Guy disappearing into the thick of the forest, Yusuke shook his head and smiled. Then, putting his sister on his back, under her sonorous laughter, he ran home.

Fourteen years have passed since Yuusuke miraculously found himself in the world of Naruto. When he first found out where he was, the first reaction was fear, but then, after a while, he began to gradually fall in love with this world. He is more and less familiar with this world, although in a past life he was not much into anime, but from time to time he still looked through a couple of good works. As for the specific world of Naruto, Yuusuke knew the whole plot, but only in general terms, there were many details that he did not know and forgot. Also, he wasn't particularly interested in the later part of Naruto where the main character and the others fought against the Ōtsutsuki clan. He skimmed through these episodes only to satisfy his curiosity.

Also, when Yuusuke found out that he was someone from the Uchiha clan, a picture immediately popped up in his mind where Itachi Uchiha, along with Obito, was slaughtering his own clan. Leave it as it is, a terrible future awaited him, he could not ignore it in any way, so he had to make every effort to gain strength enough to protect himself and his loved ones.

In a past life, Yuusuke was a brilliant scientist with vast knowledge. With the mind of an adult and knowledge from a past life, Yusuke was very meticulous in his training. He tried to develop his strengths as much as possible but did not forget to eliminate weaknesses as much as possible. And thanks to all this, Yusuke now has strength far beyond his peers. But most of all, it was not his strength that struck him, but the speed with which it grew. In the eyes of others, Yuusuke was a rare genius whose growth rate and strength rivaled even such an incredibly gifted shinobi as Hatake Kakashi.

Yusuke and Kakashi very rarely crossed paths, but both did not want to give up the championship. Unfortunately, after the tragedy that happened some time ago, where two of Kakashi's best friends, Rin and Obito, died, the former became like a walking dead man. His eyes, which used to be burning with fire, have lost their luster and the already not very sociable Kakashi has completely withdrawn from people.

Yusuke felt very sorry for Kakashi. If not for the series of blows he received in recent years, this genius would definitely have reached much greater heights.

to unfortunately, Yuusuke didn't have much free time to mess around with him, as he had to become much stronger if he wanted to avoid death in a few years.

By this time, Yusuke had completely immersed himself in the shinobi world. His knowledge from a past life and his desire for even more knowledge motivated him to study everything in this world. Basically it was ninjutsu. Strength was paramount. Unfortunately, some laws of physics and other sciences in this world worked a little differently. Because of this, Yuusuke had to spend a lot of time learning any ninjutsu or training method. Of course, the results were also pretty good.

After running out of the forest, Yuusuke stopped running and, carrying his sister on his back, slowly walked towards the house, enjoying the company of his little sister.

"Brother, today a boy said that you are not a genius if you still haven't been able to awaken the Sharingan! I argued with him for a very long time!" Izumi said waving her small fist.

"Hahaha, I like your concern Izumi, but in the future, don't pay attention to it, okay?"

"But bro..." Yuusuke's attitude didn't please Izumi.

Noticing that she pouted, Yuusuke shook his head, "Izumi, there is no need to get angry over such trifles, the most important thing for me is to be strong in your eyes!"

"Hmph, they are just fools who don't understand anything! Even without the Sharingan, you are still very strong!" - Izumi said with a bit of anger in her voice.

His sister's words were not something new for Yusuke, he had long known about all the rumors and grievances in the clan towards him. Although his achievements at a young age can be considered very good. Due to the fact that he was still unable to awaken the Sharingan, many envious members of the clan used this pretext to humiliate him in the eyes of society.

The Uchiha clan has always been like this, due to the fame brought by Uchiha Madara, they became extremely arrogant and had an unhealthy pride in particular due to the Sharingan.

Most people from the clan considered themselves invincible as long as they had the sharingan. Therefore, Yusuke as a member of the clan who did not awaken the Sharingan was nothing more than garbage to them, and in their opinion, anyone who awakens the Sharingan can easily defeat him.

However, Yuusuke himself was puzzled that his Sharingan still hadn't awakened. After spending several hours reading books in the clan's library, he was able to figure out that a strong emotional stimulus is needed to awaken the Sharingan, most often this is a great danger to a loved one or his death. Only such a strong stimulus could cause the Sharingan to awaken, of course there were other ways, but this method had the greatest chance of success.

Knowing what it cost him to open his eyes, Yuusuke could only laugh bitterly. He had few friends, and all his relatives did not leave the village. And since he was very strong, he didn't face many dangers during missions outside the village.

However, Yuusuke didn't worry too much about it because it was something that gave him great confidence in his future. It's a weapon that came into this world with him, but it doesn't belong to Naruto's world instead, it came from the death fantasy world known as Bleach.

In the so-called sea of ​​Yusuke's soul, a katana floats, whose blade is surrounded by raging flames.

This katana Zanpakutō is the main weapon of the Shinigami in the world of death. Aspiring Shinigami are given unnamed, unidentified swords called Asauchi. But gradually the imprint of the owner's soul is imposed on them, and they have a unique personality, character and name. In their unreleased form, most swords look like a katana. The released form of each sword is unique, each one will have something different that defines his style.

Nevertheless, Yusuke got one of the most, if not the most powerful spirit - Ryujin Jakka (from Japanese. Current fire in the form of a blade). He did not have to go through the initial difficulties because of this and therefore he already has a katana with a spirit. All Zanpakutō have two levels of release: Shikai and Bankai.

Ryujin Jakka usually sleeps in Yuusuke's shower, but he can be summoned at any time. Yusuke often used it in battles in the Third Shinobi World War. Also, due to Ryujin Jakka's invisible influence on Yuusuke, any of his fire elemental ninjutsu was much stronger than others. And when Yuusuke first discovered this, he began to pay as much attention as possible to fire element jutsu.

However, Yuusuke is not yet able to fully control the Zanpakutō. He had only recently managed to barely master the Shikai, but only a fraction of its power. He is still unable to fully deploy his power. But even this small share was enough to shine in the third world war and get the title *Fiery Swordsman*.

When Yusuke returned home with Izumi, a simple but delicious homemade dinner was already prepared.

"You are back, sit down quickly, the food is almost cold. Son, you train too much, you are already so strong, maybe you shouldn't be so zealous "- Uchiha Hazuki, with a warm smile on her face and eyes full of motherly love, looked at her children. For my age

in her early thirties, she looked pretty good. If you look closely, you can see the striking resemblance between daughter and mother, Hazuki was a more adult version of Izumi.

Yusuke smiled embarrassedly, lowered his sister to the ground and washed his hands, sat down at the table: "Mom, there is never a lot of strength, I perfectly understood this in the war! So until I reach my goal, I'm not going to stop!"

After Yusuke's words, Hazuki's face showed sadness: "So many people died in this war, I knew many of them. I really don't understand why people fight... Haa anyway, I'm powerless here, our world is too dangerous, you have to promise your mom to be careful."

"Don't worry mom, I value my life too much!" Yuusuke replied seriously before putting his hand together and starting to eat. Izumi quickly repeated after her brother and stuffed her mouth with rice and fried shrimp.

While they were eating, Hazuki brought several sets of clothes.

"Tomorrow morning, a solemn memorial service for those who died in the war will take place in the village. I've got your clothes ready, so don't forget to change before leaving."