Near the village of Konoha, in a small forest, two young boys were fiercely engaged in hand-to-hand combat. The sound of their collisions, *pa-pa*, echoed continuously through the air.
Though the two boys were young, they were clearly experts in taijutsu, with each move executed at lightning speed and with incredible force, creating gusts of wind as they battled through the forest.
One of the boys wore a green tight-fitting suit and had a comical mushroom-shaped hairstyle. His thick eyebrows and noticeably larger-than-usual nose made him stand out. This was the young Might Guy.
"Yusuke, fighting you is so much fun! But please be careful, this is my final move!" Guy said, drenched in sweat and grinning happily at the other boy.
The other boy, Yusuke, had black hair and a handsome face. His narrow eyes were calm and serene.
Yusuke wore the standard ninja vest of Konoha, with the symbol of Konoha on the headband tied to his left arm. The fan symbol on the back of his vest, with red on top and white on the bottom, marked him as a member of the Uchiha clan.
"Strong Fist of Konoha!" Guy shouted as he prepared to strike, only to be interrupted by Yusuke.
"Wait!" Yusuke made a gesture to stop.
"Could it be that you're afraid? Have I finally won in taijutsu?" Guy asked, tears of joy welling in his eyes as he saw Yusuke call for a pause.
Yusuke slowly replied, "Your focus is too much on me, you've lost awareness of your surroundings. Izumi is already here, I need to go home for dinner. Let's call it a day."
"Big brother, mom says it's time to come home for dinner!" As soon as Yusuke finished speaking, a little girl's voice called from nearby.
A little girl in purple clothes popped out from the woods. She was Uchiha Izumi, Yusuke's younger sister. With long black hair, bright and lively eyes, and a cute appearance, she had a beauty mark just below her right eye.
Guy nodded in disappointment. He and Yusuke had an agreement that whenever Izumi came to call him, their sparring would officially end.
Yusuke had made this rule because Guy was too persistent. Once he got carried away, Guy couldn't stop himself and would continue fighting. That's why they had this arrangement.
"Alright, next time we'll spar again!" Guy said, his face lighting up with a radiant smile. After waving goodbye to Yusuke, he shouted, "Youth!" and ran out of the forest.
As he passed Izumi, Guy flashed a bright smile, showing his shining white teeth, and gave her a thumbs-up.
Izumi smiled sweetly in return and also gave him a thumbs-up, saying, "Good luck!"
Watching Guy's figure fade into the distance, kicking up dust, Yusuke shook his head and smiled. He walked over and picked up Izumi. "Izumi, let's go home for dinner."
Yusuke had been in the world of *Naruto* for fourteen years. He was a traveler from Earth.
Back on Earth, he had watched *Naruto* and had a general understanding of the plot, though many of the details had long since faded from his memory. He wasn't too interested in the later stages of the story, where gods were battling, and had only skimmed through those parts, missing out on a lot of information.
However, Yusuke was very familiar with the fate of the Uchiha clan. In just a few years, Uchiha Itachi, a genius of the clan, would massacre their entire family for the sake of the village's peace, leaving only his younger brother Sasuke alive.
Yusuke couldn't tolerate Itachi's actions. Not only was he a member of the Uchiha clan, but his parents and his younger sister, Izumi, were his weakness, and he would never allow anyone to harm them.
In order to secure the fate of himself and his family, Yusuke had worked tirelessly to improve his strength.
Before his crossing, Yusuke had been a scientist in various fields, with an extensive knowledge base and efficient learning methods.
Thanks to his extraordinary cognitive abilities, Yusuke consciously worked on improving his various skills from a young age. Compared to most people, Yusuke had already gotten a head start, and with his relentless effort, his strength grew at an astonishing rate.
To others, Yusuke was a rare genius, on par with Kakashi, the genius of his age.
Both Yusuke and Kakashi had recently been promoted to Jonin, though they didn't have much interaction.
Especially after Obito and Rin had both died in battle, Kakashi, who had always been proud and aloof, now isolated himself and avoided any contact with others outside of missions.
Of course, Yusuke and Kakashi did have some connection, as both shared a common friend—Might Guy. This was probably a trait of proud people: though they had few friends, they valued someone like Guy, who was pure-hearted and trustworthy.
Yusuke felt regret for Kakashi. Without the recent string of setbacks, Kakashi would have surpassed even the original *Naruto* storyline's accomplishments.
Now, Kakashi hardly worked on improving his strength. Instead, he numbed his heart through constant missions. To Yusuke, Kakashi was wasting his talent!
But even though Yusuke felt regret for Kakashi, he didn't have the time to worry about him. He had fully immersed himself in the world of ninjas, driven by his scientific curiosity to constantly explore ninja-related knowledge.
Although the rules of the *Naruto* world were different from those on Earth, such as running faster with hands behind the back instead of swinging them as on Earth, Yusuke knew that once you understood one principle, it applied to all others. The way to research and solve problems was universal. With his knowledge as a scientist, Yusuke had a huge advantage in studying ninjutsu or even scientific training methods.
Carrying Izumi in his arms, Yusuke strolled along the rural road, enjoying the time with his adorable little sister under the beautiful sunset.
"Big brother, today a little boy said you're not a genius, and Izumi argued with him for a long time. You're the best, big brother!" Izumi said from Yusuke's arms.
"Oh? Just ignore those things. There's no need to argue," Yusuke smiled and affectionately flicked her nose.
"That's not right! He said big brother hasn't unlocked the Sharingan yet, and he claimed that the so-called geniuses are just rumors. In the Uchiha clan, that doesn't count for much," Izumi pouted her lips in anger.
Yusuke laughed heartily. "You, you're usually so polite, but now you're being so competitive."
"I can be polite about other things, but I won't let anyone say bad things about you, big brother. You became a Jonin at twelve! Even if you haven't unlocked the Sharingan, you're still the strongest genius in the clan. No, you're the strongest genius in the village!" Izumi huffed.
Although Yusuke's strength far surpassed that of his peers and he had already reached Jonin rank, he still hadn't unlocked his Sharingan, which often caused criticism from others in his clan. Most members of the Uchiha clan were very proud, and some even had an unhealthy sense of superiority regarding the Sharingan.
Many in the clan believed that Uchiha clan members with the Sharingan were invincible, and that even Yusuke, despite his personal strength, was considered mediocre by them. In their eyes, anyone with the Sharingan could defeat him.
Yusuke himself was somewhat puzzled by his inability to awaken his Sharingan, so he had reviewed a lot of historical materials and conducted extensive research.
Eventually, Yusuke discovered that the condition for unlocking the Sharingan was a massive emotional stimulus. The most common trigger was the danger of someone close to him or himself, which would trigger the awakening of the Sharingan.
Knowing the conditions for awakening the Sharingan, Yusuke could only helplessly shake his head.
He had few friends, and all his family members remained safely within the village, avoiding dangerous battlefields. Because of his overwhelming strength, he rarely encountered any real danger, always managing to resolve situations. That's why he had become a Jonin by now, but still hadn't unlocked his Sharingan.
However, Yusuke didn't care too much about this because his true trump card was a weapon he had brought with him when crossing into the world of *Naruto*. A weapon that did not belong to this world.
Deep in Yusuke's soul, a katana surrounded by roaring flames hovered.
This katana was long, with cloud-like patterns resembling flames along its blade. It glowed with a red light in the burning fire. It was the *Zanpakutō* from *Bleach*, the strongest and oldest fire-type sword—Ryūjin Jakka!
Ryūjin Jakka had been dormant in Yusuke's soul, but whenever Yusuke was in battle, he could summon it at will.
Due to the fiery nature of Ryūjin Jakka, it had subtly influenced Yusuke over the years, greatly enriching his chakra and making his fire-type chakra particularly abundant and pure.
Yusuke had also focused on utilizing his advantage, honing his fire-type chakra and developing related ninjutsu.
However, Yusuke couldn't yet fully control Ryūjin Jakka. The sword's power was too violent, and only recently had he mastered its *Shikai* state.
Though it was just *Shikai
*, Yusuke could now easily summon powerful flames with Ryūjin Jakka's influence.
This was Yusuke's true strength—his ability to control the flames. In the *Naruto* world, ninjutsu was primarily categorized into five elemental types: fire, wind, water, earth, and lightning. Fire was considered the most destructive element, and Yusuke was highly skilled in using it to overwhelm his opponents.
Yusuke couldn't wait to explore and learn more about the world of ninjas with his scientific mindset and battle prowess. He believed that with time, he would unlock even greater power, all while protecting his family and keeping them safe from the fate of the Uchiha clan.
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