Konohagakure - Uchiha Compound
There are two types of transmigrators. Some have golden fingers—systems or cheats given to them. Others have nothing special. But there's a rare third type—those who make their own cheats. Uchiha Tajima was one of these.
At 25 years old, Tajima had spent 21 years in the Naruto world. His transmigration was typical. Parents died during a routine village mission. Child cried and died for some unexplained reason. A modern man from Earth took over.
It made statistical sense. About 70% of shinobi died in wars or missions. Many transmigrators ended up as orphans because that's just how the ninja world worked.
Tajima activated his Sharingan with a small pulse of chakra. The three tomoe spun lazily as data appeared in his vision:
UCHIHA OS v16.4.2 —
Ninjutsu Directory:
Katon: Gōkakyū no Jutsu [85%]
Suiton: Suijinheki [72%]
Doton: Doryūheki [61%]
Fūton: Daitoppa [49%]
Raiton: Jibashi [67%]
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Genjutsu Directory:
Magen: Jubaku Satsu [94%]
Magen: Narakumi no Jutsu [100%]
Genjutsu: Sharingan [97%]
Magen: Kasegui no Jutsu [89%]
Tsukuyomi 2.0 [10%]
(More entries hidden…)
Storage Space: 47% capacity
His system wasn't particularly complex. Sealing jutsu carved directly into his eyes, enhanced with Yin chakra. A 100% rating meant he could perform the jutsu with just one hand seal. The storage space was inspired by Obito's Kamui dimension, though much more limited.
When Tajima showed interest in sealing jutsu at age 6, the clan head Setsuna had assigned him an elder who specialized in it. The Uchiha weren't against members learning skills beyond fire jutsu, contrary to what fanfiction had led him to believe.
Tajima's goals were simple. He didn't want to be as powerful as Hashirama or Madara—that was impossible. He just wanted to be strong enough to survive the Fourth Great Ninja War.
He had no plans to change the plot. Why bother? If he killed Madara or Zetsu early, how would Naruto and Sasuke reach god level? What about future threats? Changing the timeline seemed stupid.
Even if Naruto and Sasuke lost, he'd live in Eternal Tsukuyomi for about three days—roughly a lifetime. He'd have lived two lifetimes. Better than most people got.
His apartment was practical. Training scrolls everywhere. Weapons neatly organized. Sealing diagrams covered one wall.
Tajima frowned at his reflection. Six months of intense training had barely increased his chakra capacity. The bottleneck was frustrating.
"Time for a different approach," he muttered.
He'd been working on this idea for 21 years. Tsukuyomi 2.0—a genjutsu that stretched time perception even further than Itachi's version (kinda). Seven days in the real world would equal seventy years of mental experience.
Two shadow clones appeared beside him. They moved with practiced efficiency, setting up medical equipment around his bed.
"Medical supplies ready," the first clone reported.
"Monitoring seals active," the second confirmed.
Tajima nodded and lay down on the bed. The first clone inserted an IV into his arm while the second placed chakra-conductive seals at key points on his body.
"Begin final checks," Tajima ordered.
The clones verified his vital signs and chakra flow. Everything was stable.
Tajima swallowed two ration pills. The surge of energy would help maintain the jutsu. His shadow clone began forming hand signs—forty-four in total, a sequence that had taken years to perfect.
As the final sign completed, Tajima felt his consciousness begin to drift. This wasn't sleep. It was something much deeper.
His last thoughts were clear: When I wake up, I'll have decades of mental training that nobody else has. The perfect way around my chakra limitation.
The clone watched as Tajima's breathing slowed to a steady rhythm. The monitoring seals pulsed gently, showing stable conditions.
"Tsukuyomi 2.0 initiated," the clone murmured. "Completion in seven days."
One clone dispelled itself, returning chakra to the original, it acted as the trigger to seal his this life's memory. The remaining clone settled in for guard duty. Seven days was a long time to be vulnerable.
On the bed, Tajima's face relaxed. His mind began experiencing the sensation of warmth and confinement—the beginning of a new life in a world of his choosing. A world where he could grow stronger in ways the shinobi system never allowed.
Seven days for seventy years of experience. A good trade.