"What about you? Why don't you sit?"
"It's easier to concentrate while standing," Kiyohara lied effortlessly.
Kakashi sighed. He had no choice but to sit on the lone stool while Kiyohara leaned against the bare wall.
"The technique is called Lightning Release: Lightning Flow," Kakashi explained, holding a Kunai.
"The principle is Chakra Flow (Chakura Nagashi)."
Kiyohara nodded. He understood the theory.
Chakra Flow was an advanced application where a ninja infused their weapon with chakra to extend its range or durability.
However, simple infusion was different from Nature Transformation.
Most ninja could coat a blade in raw chakra to make it sharper (like the Samurai of the Land of Iron).
But enchanting a blade with an Element was exponentially harder.
"For example," Kakashi continued. "Uchiha Shisui uses Sword of Leaping Flame to coat his tanto in fire. Asuma Sarutobi uses wind to extend his trench knives. But Lightning is tricky because it vibrates at high frequencies."
Kakashi focused.
Crackle.
Faint, azure arcs of electricity began to dance along the metal surface of the Kunai. They didn't just coat it; they seemed to vibrate through the metal itself, turning the weapon into a high-frequency vibro-blade.
"It significantly increases cutting power and causes numbness on contact," Kakashi said, the blue light reflecting in his eyes.
He pulled a scroll from his vest.
"Here. This contains the training method. It was left by my father, but it's only C-Rank difficulty, so you should master it quickly."
"Kakashi..."
Kiyohara took the scroll.
In the ninja world, knowledge was hoarded. Clans killed to protect their secret techniques. Yet Kakashi handed over a White Fang legacy scroll like it was a newspaper.
"Thank you."
"It's nothing," Kakashi shook his head. "We're teammates."
Just then, a knock echoed.
An ANBU appeared at the door, wearing a bird mask.
"Genin Kiyohara. Your Chunin Selection Exam is scheduled for two days from now. Training Field 14."
The ANBU vanished.
"Well then," Kakashi stood up. "Focus on your training. I'll see you there."
The Grind.
Two days passed in a blur of sparks and sweat.
Kiyohara didn't leave his house. He turned his small, empty courtyard into a dedicated dojo.
With the Missing-nin acting as a 24/7 personal tutor, his efficiency was terrifying.
'Wrong frequency,' the spirit would chide. 'You're coating it, not flowing it. Make the chakra vibrate inside the metal lattice.'
Kiyohara practiced until his hands were numb and his chakra coils burned.
He combined the new Lightning Flow with his Wire Trap. Instead of just heating the wire, the lightning now pulsed along it, turning the copper strand into a cutting edge.
By the morning of the exam, he hadn't reached perfection, but he had reached "Combat Ready."
Selection Day.
Kiyohara stood in the shower, letting the hot water beat against his back.
He slicked his wet black hair back, staring at the tiled wall.
"I'm still too thin," he muttered, looking down at his physique.
He was lean and wiry, built for speed, but he lacked raw power.
"I need to find a Taijutsu specialist version of myself," Kiyohara mused.
If a future timeline existed where he was born into the Yotsuki Clan (Cloud Village) or the Senju, his physical potential would skyrocket.
This train of thought led him to re-evaluate his "Cheat."
According to the Last Words Letter, he was the anchor point.
He wasn't just pulling from a linear future. He was pulling from the Multiverse.
'It's not a straight line,' Kiyohara theorized. 'It's a tree.'
If time was linear:
Current Commoner Self -> Future Rogue Ninja -> Future Dead Guy.
But if it was a Probability Tree:
Current Self (Anchor) -> Branch A (Rogue Ninja) / Branch B (Taijutsu Master) / Branch C (Kage).
His transmigration was the seed. From that seed, infinite possibilities sprouted. The "Last Words Letter" was simply a tool to reach into those parallel branches and harvest the fruit of a life he hadn't lived yet.
'This means I'm not limited by my current talent,' Kiyohara realized, a thrill running through him. 'I just need to find the right urn.'
"However... I need to verify this theory."
He needed more samples. More deaths. More letters.
"Kiyohara!"
A female voice shouted from outside the ventilation window, interrupting his metaphysical crisis.
"Today is the Chunin Selection! Why aren't you out yet?!"
Kiyohara froze.
'Kurenai?'
He looked down at himself. He was stark naked, covered in soap.
"I'm in the shower!" he shouted back. "Don't peek!"
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