Time is the most precious commodity for a genius, but for someone with a System, it is the ultimate multiplier.
Five years had passed since the night the sky over Konoha burned red. The Nine-Tails' attack was now a dark memory, a scar that the Hidden Leaf Village was slowly trying to heal. But beneath the surface of reconstruction, a different kind of war was brewing—a cold, silent war of politics, shadows, and suspicion.
Because Minato Namikaze, the Fourth Hokage, had survived, the timeline Ren remembered from his past life was completely derailed. The Uchiha clan had not been immediately ostracized and forced to the very edge of the village. The tension was still palpable, heavy like the air before a thunderstorm, but it was held in check by the Yellow Flash's sheer presence and authority. Minato's survival meant Danzo Shimura and the Third Hokage couldn't act as freely as they wished.
Yet, within the sprawling, traditional compounds of the Uchiha, an undercurrent of resentment still festered. Fugaku Uchiha, the clan head, felt the piercing stares of the villagers who still suspected the Sharingan had controlled the Kyuubi.
And in the center of all this tension was a five-year-old boy.
In the secluded southern training grounds of the Uchiha district, far from the prying eyes of the main clan, Ren Uchiha stood before a massive, splintered wooden training post.
He had grown into a lean, sharp-featured child. His raven-black hair hung slightly over his forehead, framing eyes that were a deep, abyssal black. To the outside world, he was just another orphan of the Nine-Tails incident, a quiet boy who rarely spoke and never played with the other children like Sasuke or Naruto. Some called him the 'Miracle Baby' because he had survived the collapse of his home without a scratch. Others whispered that he was cursed.
Ren didn't care about their whispers. He was too busy building a monster.
*Breathe in. Gather the chakra at the solar plexus. Condense it. Push it through the tenketsu.*
Ren's small fist shot forward, moving with a speed that defied the physical limitations of a five-year-old.
*CRACK!*
His knuckles slammed into the solid oak. The wood didn't just splinter; it exploded inward, a shockwave of concentrated kinetic energy blowing out the back of the post and scattering sawdust into the wind.
Ren pulled his fist back, his skin completely unblemished. He didn't even wince.
"The 'Perfect Sage Body' integration is proceeding smoothly," Ren muttered to himself, examining his small hand.
During these five years, Ren had been a silent predator within the clan. He had used his 'Extraction' ability like a scalpel, taking small, unnoticeable slivers of talent, chakra control, and nature affinities from almost every Uchiha elder, Jonin, and Chunin he crossed paths with. He was careful never to extract enough to cause permanent damage, always playing the innocent toddler who just wanted to hold someone's hand or bump into their leg.
He called up his interface with a thought.
**[Host Name: Ren Uchiha]**
**[Age: 5]**
**[Chakra Capacity: High-Chunin Level]**
**[Chakra Quality: Elite Jonin Level (Due to Sage Body density)]**
**[Abilities:]**
- **Perfect Sage Body (15% Integration):** Passively grants immense physical strength, accelerated healing, and dense chakra.
- **Infinite Chakra (Tier 1):** Reserves replenish at an accelerated rate.
- **Uchiha Genius Comprehension (S-Rank):** Photographic memory for jutsu and combat tactics.
- **Advanced Chakra Control (A-Rank):** Perfected fluid manipulation of internal energy.
- **Flying Thunder God Basis (A-Rank):** Heightened spatial awareness.
- **Fire Release: Great Fireball Technique (Mastered).**
**[Inventory: Instant Mastery Token (x2)]**
"High-Chunin chakra reserves at age five," Ren sighed, wiping a bead of sweat from his brow. "In the original timeline, Itachi was already fighting in wars by this age. I need to push harder. The peace Minato bought won't last forever. Danzo is a snake that never stops slithering."
Ren closed his eyes, focusing his 'Advanced Chakra Control' and his 'Flying Thunder God' spatial awareness. Because he couldn't yet teleport, he used the spatial intuition as a radar. It allowed him to feel the "weight" of objects and people in a three-hundred-meter radius.
Normally, he only felt the familiar, fiery chakra signatures of patrolling Uchiha guards. But today... today was different.
Ren's eyes snapped open.
*There.*
About two hundred meters away, perched high in the dense canopy of the ancient cedar trees bordering the training ground, was a void. It wasn't a lack of chakra; it was a signature so tightly suppressed and cold that it felt like a black hole in his sensory map.
*ROOT.*
Ren's blood ran cold. Danzo's personal black-ops assassins. Why was a ROOT agent observing him? He had been incredibly careful to hide his true physical strength and chakra reserves. To the village, he was just a quiet orphan.
Unless... Danzo was investigating the orphans of the Nine-Tails attack for potential recruitment.
Ren's eyes narrowed. He didn't show any outward sign of panic. He slowly walked over to a towel hanging on a nearby branch, wiping his face.
*If I ignore him, he'll keep watching. If I attack him, I reveal my strength and paint a massive target on my back.*
But Ren had the System. He didn't need to fight to win. He just needed to get close.
Ren grabbed his wooden training kunai and threw it at a nearby target. He intentionally missed by a wide margin, making the kunai sail over the target and deep into the woods—straight toward the tree where the ROOT agent was hiding.
"Ah, damn it," Ren mumbled, raising his voice just enough to sound like a frustrated child. He jogged into the dense foliage, pushing through the bushes.
As he approached the massive cedar tree, he could feel the cold, suppressed chakra directly above him. The agent was likely looking down, waiting for the child to retrieve the toy and leave.
Ren reached into the bushes at the base of the trunk.
*System. Maximum Range Extraction. Target: The ninja directly above me.*
**[Ding! Target Identified: ROOT Operative 'Karasu' (Age: 22).]**
**[Target is highly suppressed. Host is within 15 meters. Extraction possible!]**
**[Scanning for Extractable Essences...]**
A list populated in Ren's mind. He expected to see standard assassination techniques, maybe a Wind Release jutsu or a poison resistance trait.
What he saw made his heart stop.
**[Potential Extractions found:]**
1. **Silent Killing Technique (B-Rank)**
2. **ROOT Mind-Seal (Un-extractable - Corrupted)**
3. **Genetic Residue: Stolen Uchiha Bloodline Signature (Match found!)**
*Wait. What?* Ren's mind raced. *Stolen Uchiha Bloodline Signature? A Match?*
*System, explain 'Match found'.*
**[Analysis: The target possesses a pair of implanted Sharingan eyes. The genetic DNA and chakra signature of these eyes are a 99.9% biological match to the Host's parents, Ryo Uchiha and Kaori Uchiha.]**
The world seemed to tilt on its axis. The sound of the wind in the leaves faded into a deafening silence.
His parents. Ryo and Kaori.
For five years, Ren had lived under the assumption—the village's official narrative—that his parents were tragic collateral damage. The story was that their small house in the outer district was crushed by a stray shockwave from the Nine-Tails' tails, killing them instantly, and by some miracle of physics, the crib protecting Ren had survived the collapse.
It was a lie.
A cold, horrifying realization washed over Ren. Danzo hadn't just let the Nine-Tails rampage. He had used the absolute chaos, the screams, and the fire as a smokescreen to dispatch ROOT agents into the Uchiha district. They had hunted down vulnerable, isolated Uchiha families, murdered them in cold blood, plucked the eyes from their skulls, and then destroyed the evidence by making it look like the Kyuubi's doing.
And the man sitting in the tree above him was wearing his mother and father's eyes.
A dark, violent fury erupted in Ren's chest. It wasn't just the anger of a reincarnated soul; it was the biological, instinctual rage of the Uchiha bloodline reacting to the desecration of its kin. His chakra, usually calm and controlled like a deep river, began to boil like magma.
**[Warning: Host's emotional state is critically unstable. Uchiha Bloodline resonance detected. Sharingan awakening protocol initiated...]**
Ren slammed his hands into the dirt, gripping the roots of the tree to anchor himself. He couldn't let his chakra spike. If the ROOT agent sensed his power, Danzo would know.
*Suppress it. Suppress it!* Ren commanded his body, drawing heavily on the 'Tail-Beast Vitality' and his 'Sage Body' to forcefully crush his own chakra back down into his core. It was excruciating, like trying to cap an erupting volcano with bare hands, but the Sage Body held firm.
He took a slow, agonizing breath, staring at the dirt.
*System. Extract the 'Silent Killing Technique'.*
**[Ding! Extraction in progress... 10%... 50%... 100%!]**
**[Extraction Successful! You have obtained: Silent Killing Technique (B-Rank).]**
Ren didn't care about the technique. He just needed the transaction to complete. He picked up his wooden kunai, stood up, and brushed the dirt off his knees. He didn't look up into the branches. He didn't show a single ounce of the murderous intent that was currently screaming in his mind.
He walked back to the training ground, his face a perfectly blank mask.
*Danzo Shimura,* Ren thought, every syllable dripping with venom. *I thought you were just an obstacle for the clan. I thought you were just a political enemy. But you took them. You took the parents of this body. You wear their eyes.*
Ren walked to the center of the training field and sat cross-legged, closing his eyes as if meditating. Inside, he was formulating a new plan. The village politics didn't matter anymore. The canon timeline didn't matter. Danzo was going to die, and Ren was going to make sure he felt every single ounce of the Uchiha's wrath.
"Ren-kun!"
A soft, cheerful voice broke through his dark thoughts.
Ren opened his eyes and turned. Walking toward him across the sunlit grass was a young girl with long, straight black hair and a gentle, innocent smile. Izumi Uchiha. Beside her, walking with a measured, purposeful stride, was a boy with a stoic face and dark, ancient eyes.
Itachi.
Itachi was now ten years old. He had already graduated from the Academy, achieved the rank of Chunin, and was quickly becoming a living legend within the village. He wore the standard flak jacket, but he carried an aura of sorrow that seemed to follow him like a shadow.
When Itachi looked at Ren, there was always a flicker of intense wariness in his dark eyes. Itachi was a genius of observation; he could sense that there was something fundamentally "different" about the five-year-old orphan.
"Training again?" Itachi asked, his voice soft but carrying a subtle interrogative edge. "My father wants to see you at the compound. He says you've been skipping the clan gatherings."
Ren stood up, brushing off his pants. He looked at Itachi, the future kinslayer. A few minutes ago, Ren might have felt a distant pity for the boy. Now, knowing what Danzo was capable of, Ren saw Itachi as a tragic pawn playing a rigged game.
"Clan gatherings are for people who like to talk in circles, Itachi-san," Ren said, his voice eerily calm. "I prefer to act."
Itachi sighed, shaking his head slightly. "You're more arrogant than my little brother, Sasuke."
"I'm not arrogant," Ren said, his eyes locking onto Itachi's. "I'm just focused."
He observed Itachi closely. Over the past five years, Ren had carefully extracted minor talents and insights from Itachi—things that wouldn't cause a permanent drop in his older cousin's legendary potential. But today, the System's interface highlighted something entirely new, something that made Ren's freshly awakened rage spike with dark opportunity.
**[Target Identified: Itachi Uchiha (Age 10).]**
**[Potential Extraction: 3-Tomoe Sharingan (S-Rank)!]**
Ren's heart skipped a beat, but his face remained perfectly still. Itachi had already awakened his fully matured Sharingan. He was a prodigy among prodigies.
*If I extract this... I won't just have the Sharingan. I'll have the eyes to see through Danzo's shadows. I'll have the power to tear ROOT apart.*
But Ren knew the risk. Extracting a bloodline eye was fundamentally different from extracting a concept like "Genius" or a technique. It required a massive physical toll. Without naturally opening the chakra pathways to the optic nerves, the raw Uchiha spiritual energy could cause a devastating backlash.
*Wait. I have the Instant Mastery Token from saving Minato.*
Ren's dark eyes gleamed with a sudden, predatory light. He looked at Itachi and smiled—a small, chilling smirk that made Izumi take a step back.
"Actually, Itachi-san," Ren said, taking a slow step forward, "I was just about to ask you for a favor. A spar. I want to see exactly how far the gap is between the clan's greatest genius... and me."
Itachi narrowed his eyes, his posture instantly shifting into a defensive stance despite himself. "A spar? Ren, you haven't even entered the Academy yet. You don't know the first thing about real combat."
"I know enough," Ren said, his hand slowly reaching for the wooden training kunai at his hip. "And honestly... I'm really bored of hitting wooden posts."
**[Ding! Daily Extraction Attempt Available!]**
*System,* Ren thought, his gaze locked on the future kinslayer. *Get ready. Today, the Uchiha Ghost opens his eyes.*
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