Chapter 1: Transmigration
Darkness.
Not the peaceful kind.
This was the suffocating void of nothingness.
He couldn't see. Couldn't hear. Couldn't move.
And then—
Gasp!
He shot upright, panting, eyes wide. Cold sweat dampened the back of his neck as he looked around the unfamiliar room — sliding wooden doors, paper screens, oil lamps, tatami mats.
Traditional Japanese-style interior.
Except this wasn't Japan.
A flood of foreign memories rushed into his brain. His head throbbed painfully as two lives merged — one from Earth, one from this world.
Name: Uchiha Ren
Age: 10
Clan: Uchiha
Grandfather: Uchiha Haruto, Clan Elder
Parents: Both deceased on an S-Rank mission
No way… this can't be…
But he already knew. As the headache subsided, he whispered:
"Uchiha… as in the Naruto world…"
He recognized the details too well. The traditional clan compound. The names. The layout. The oppressive tension hanging in the air.
The Uchiha Massacre was coming. Soon.
Oh no…
Panic threatened to take over. His breathing grew ragged.
One month before the Uchiha Massacre… this is a death sentence!
He knew what was coming. Itachi. Obito. Danzo. The ANBU. All of them would slaughter the clan in cold blood.
I don't stand a chance like this!
Then a mechanical voice echoed in his mind.
> [Simulation System initializing…]
[Host Identified: Uchiha Ren (Transmigrator from Earth)]
[Binding Complete. Welcome to the Simulation System.]
[Initial Bonus: 2 Simulation Attempts granted.]
His eyes widened. For the first time since waking up, a spark of hope appeared.
A system? A chance to survive?
A translucent interface appeared before him like a holographic screen.
---
Simulation System
Function:
Simulates possible futures based on host's choices, actions, and skill level.
Mechanics:
Host personally enters full simulations.
Before starting, host may define:
Training objectives
Target kills
Strategic approach
Once simulation starts, real-time events unfold.
Host cannot alter decisions inside simulation after it begins.
After simulation ends (death or timeline completion), rewards are calculated.
Achievements, possessions, combat experience, training gains, and kills generate rewards.
Killing stronger enemies yields greater rewards.
Target Kill extraction grants 2 valuable abilities + random stat increases based on enemy's abilities.
Simulation Attempts: 2
---
He exhaled slowly. His panicked mind began stabilizing, years of anime knowledge flashing through his brain like lightning.
If this is real… I know exactly what will happen. Danzo manipulating the Third Hokage. Konoha's surveillance increasing. Itachi secretly working with the village leadership. Shisui's suicide — or rather, Danzo stealing his eye.
Obito will arrive at night, helping Itachi slaughter the clan. My entire family — gone. One month from now.
But if I use this system right... maybe I don't have to die with them.
---
That night, while elders gathered to discuss politics, Ren sat alone in his dimly lit room. The old oil lamp flickered, casting dancing shadows across the walls.
The system screen floated quietly in front of him.
> [Would you like to begin your first simulation?]
"Yes," Ren whispered.
> [Please define your Simulation Strategy.]
He paused, thinking carefully.
---
Simulation Plan 1: Initial Test Run
Training Objective:
Basic Taijutsu improvement
Kunai/Shuriken training
Chakra control refinement
Fire Release: Great Fireball Jutsu practice
Target Kill:
None (first simulation — safe test run)
Combat Policy:
Avoid conflicts
Prioritize training and survival
---
> [Strategy Locked. Simulation Starting...]
The world around him blurred. His room faded away.
---
Simulation #1: Possible Future
The sun peeked over the Uchiha training grounds. The air was crisp, cool. Birds chirped in the distance.
Uchiha Ren stood at the center of an empty field. His single-tomoe Sharingan remained dormant as he took a fighting stance.
Everything feels so real…
He moved through drills: shadow sparring, striking practice, rolling, dodging, blocking. Hours passed as sweat poured down his back.
> [Taijutsu Progress: +5%]
[Basic Muscle Memory Improving]
Every evening he trained chakra control — balancing on trees, climbing with his feet, holding leaves steady on his forehead for hours.
His chakra circulation gradually grew smoother.
> [Chakra Control Refinement: Intermediate Level achieved]
Finally, every night, he practiced his clan's signature technique.
"Fire Style: Great Fireball Jutsu!"
The fireball grew larger, hotter, more stable with each attempt.
> [Fire Release Proficiency: 30%]
---
Two weeks into the simulation, during an afternoon training session deep in the forest, he sensed it:
Hostile presences nearby.
Three rogue ninja emerged — two bandits, one low-level missing-nin.
"Well, well. A little Uchiha kid training all alone. Easy money."
They're coming for me...
Heart racing, he activated his single-tomoe Sharingan.
Let's test myself.
---
The bandits rushed first — poorly trained, eager. Kunai flew from Ren's hands, hitting one square in the chest. The man collapsed.
> [Enemy Eliminated: 1]
The remaining bandit hesitated.
The missing-nin, however, was different. Calm. Smiling.
"You have talent for a brat," he said, rushing forward.
Ren barely dodged, feeling the blade scrape his ribs.
Blood splattered.
Too slow!
He countered with a fireball, but the missing-nin leapt over it, closing in fast.
A brutal exchange followed — fists, kicks, steel against steel.
Eventually, exhaustion set in. The enemy's kunai found its mark, stabbing deep into Ren's abdomen.
The world faded.
---
Simulation Ended.
---
> [Simulation Evaluation:]
Days Survived: 14
Training Efficiency: High
Enemies Killed: 1
Combat Experience: Moderate
Sharingan Growth: +10%
Fire Release Mastery: +20%
---
> [Rewards Available:]
1. Strength +1
2. Speed +1
3. Endurance +1
4. Fire Release Proficiency Improved
5. Chakra Control (Intermediate)
6. Sharingan Proficiency +10%
7. Extra Simulation Attempt +1
---
The world snapped back. Ren sat once again in his room, breathing heavily.
But instantly he felt it — his real body was stronger. His chakra control smoother. His muscles firmer.
A grin stretched across his face.
This system… is my path to survival.
---
End of Chapter 1