Konoha, Year 29.
In a large courtyard deep within the Uchiha compound, a thin, sickly-looking six-year-old boy named Uchiha Genkei sat cross-legged in a quiet room.
Swish!
The moment he successfully drew forth his very first wisp of chakra, his eyes snapped open. He sat up straight, his breathing sharp.
"What... is this?"
Suddenly, a wave of memories surged through his mind—strangely familiar, yet foreign.
For a long moment, he sat frozen, stunned as he tried to absorb and process the flood of information. His eyes darted across the room while he muttered inwardly, Did I reincarnate? I'm remembering my past life now? And I ended up in the world of Naruto?
By the time his memories had finished sorting themselves out, a strange voice echoed in his mind:
[Initial contact with supernatural energy detected. Innate Insight has awakened. Trait Awakening triggered. You have acquired the following trait abilities: Gate of Time and Space, Heaven Rewards Diligence.]
A second later, more detailed information about these two traits poured into his mind, along with their functions and usage methods.
At the same time, deep within his consciousness, a strange symbol formed—a mysterious rune glowing with ethereal energy.
One looked like a swirling dimensional gate. The other resembled a twelve-faced crystal, both resting steadily at the center of his spirit sea.
Hiss...
When the flow of information finally subsided, Genkei's eyes gleamed. He sucked in a sharp breath and clenched his fists in excitement.
"Yes! I've got my golden cheat!"
And not just any cheat—these two traits were extraordinary.
—
—Trait (Genkei): Gate of Time and Space [Gold]
Begins with a 10-kilometer-radius pocket world as a personal hub.
Initially, it connects only to the One Piece world.
Allows free travel between the Naruto and One Piece universes.
—Those with a Favorability of 80 or higher toward Genkei can be bound to the Gate and granted inter-world access.
—Bound individuals cannot betray Genkei. Favorability will never drop below 80, and bound individuals cannot reveal Gate secrets to outsiders.
—If someone breaks their bond or betrays Genkei, they will lose all memories and gains related to the Gate.
Favorability Levels:
0–9: Stranger
10–29: Friendly
30–59: Friend
60–79: Trusted Ally
80–89: Close Companion
90–99: Life-and-Death Comrade
100: Devoted Follower
—
—Trait: Heaven Rewards Diligence [Red]
Any action or training leads to measurable improvement.
Reaching the limit of a skill may trigger a breakthrough, allowing sudden enlightenment of a higher-level technique or ability.
The more knowledge and experience Genkei accumulates in a related area, the more powerful the result of his enlightenment will be.
—
"Hah! With these two traits, I might actually have a shot at survival now," Genkei muttered with relief.
"In this body—weak, sickly, born to the Uchiha—any day could be my last without help."
Now that he understood his talents, a weight lifted from his chest.
With a thought and following the instructions within the Heaven Rewards Diligence trait, Genkei summoned his personal status panel—only visible to himself. The panel was merely a visualization, his own mental interface with the trait.
—
—Name: Uchiha Genkei
—Traits: Gate of Time and Space, Heaven Rewards Diligence
—Lifespan: 6 months
—Chakra Affinities: Water, Wind, Fire, Earth, Yin
—Skills:
—Uchiha Chakra Refinement (1/100) – Novice
—Traditional Medicine (2314/10,000) – Proficient
—Life-Nurturing Arts (1/5000) – Minor Mastery
—Skill Proficiency Levels: Novice, Adept, Proficient, Minor Mastery, Major Mastery, Perfection, Transcendence...
—
"Six months?"
The joy drained from Genkei's face the moment he read that number. His brow furrowed deeply.
"I knew this body was in bad shape, but this... this is barely even alive."
"If I don't fix this first, all the talent in the world won't help me."
He turned his eyes to the skill section of his panel. The Chakra Refinement technique was basic, but the other two—Traditional Medicine and Life-Nurturing Arts—clearly came from his past life.
Back then, he'd been a terminally ill doctor of traditional Chinese medicine. He had used his own techniques to fight his disease. Though he hadn't lived past thirty, he had survived a full decade longer than doctors had expected.
It had been a miracle.
His cultivation method—Life-Nurturing Arts—had played a key role.
Now, those past life experiences and understandings had carried over. While he didn't retain the physical progress, the memories were intact.
"Let's test whether Life-Nurturing Arts actually works in this world."
Without hesitation, Genkei rose to his feet and began to move through the motions embedded in his memory, flowing through the energy channels of his frail body.
By the time he completed one cycle, he was breathless and tired—but he also felt… lighter.
His body felt just a little stronger.
Was that real? Or just my imagination...?
—
—You practiced Life-Nurturing Arts once. Proficiency +1. Lifespan +1 day.
—
"Oh? It's real?"
Seeing the feedback from Heaven Rewards Diligence and the +1 day added to his lifespan on the panel, Genkei grinned wide.
"Every repetition adds one day. If I do this a few times a day, my lifespan should shoot right up!"
"Even if it's just a day at a time, I don't have to fear dying any time soon."
Whew...
He let out a breath of relief and stretched his aching limbs.
"Now that my lifespan isn't in critical danger, the next step is restoring my health. I'll need my medical skills—and whatever healing methods I can find in both worlds—to fix my body's deficiencies. Only then can I really begin cultivating."
In his current state, serious training would be impossible.
But there was something else.
"Mother…"
Genkei's thoughts turned to his mother in this life: Uchiha Chiri, the current Grand Elder of the clan.
Yes, the very same Chiri said to have created the forbidden Sharingan technique, Izanami.
In his previous life, there were two theories about when she lived—either during the Warring States era or sometime after the founding of Konoha. Arguments raged endlessly online.
But in this world, Uchiha Chiri clearly existed after Konoha's establishment.
In any case...
His mother's condition had been declining rapidly in recent years—especially over the past six months.
Drawing on his past-life knowledge, Genkei judged that without immediate intervention, she wouldn't survive much longer.
And that was unacceptable.
He needed her.
Whether he was going to revive the Uchiha clan—or gain a foothold in the One Piece world—Chiri's strength and status were vital.
With her support, the early game might be survivable. Without it, he'd be deadweight.
Reaching 80 favorability wasn't easy.
But with his mother? That was guaranteed.
"Maybe Mikoto-nee would qualify too…"
Genkei pondered this as he glanced at his panel.
"I should teach Life-Nurturing Arts to Mother. No idea if it'll help, but it's worth a try."
"Or maybe… I could give her a full checkup. If that's not enough, I could even take her to the One Piece world and find a legendary doctor like Dr. Kureha."
"In any case—I'll have to tell her everything, and soon."
Having made up his mind, Genkei took a deep breath and stepped out of his room.
In the living room, Uchiha Chiri was already waiting. The moment she saw him, she turned with a gentle, affectionate smile.
"So you're out already? Congratulations—you did it. You drew out your chakra."
Her tone was soft, full of warmth.
With her strength, she had easily sensed the faint stirrings of chakra within her son.
She was happy for him.
She knew how badly he wanted to overcome his weak body and become a ninja.
The more his body failed him, the more determined he became.
She hadn't wanted him to attempt chakra extraction. His health was too fragile. But she couldn't bear to crush his resolve.
So, in the end, she'd taught him the Chakra Refinement Technique herself.
Now that he had succeeded, her feelings were complicated—pride and worry interwoven.