The next day arrived.
It was summer vacation, so there was no school.
After breakfast, Natsuki headed out with Yakushi Nonou toward Konoha Hospital.
"Did you learn any medical ninjutsu yesterday?"
Natsuki asked casually.
"I learned the E-Rank Hemostasis Technique. It went really smoothly—I got it on the first try. Chiwa-sensei and the others all praised me."
Nonou replied softly.
She had natural talent as a medical ninja. Combined with her recent practice of tree climbing and water walking, mastering an E-Rank technique had been effortless.
"What enviable talent."
Natsuki smiled. "When you become a Jonin, you'll have to support me."
"Okay."
Nonou nodded without hesitation.
Natsuki paused, then smiled wider.
He reached out and pinched her cheek.
In the original timeline, Yakushi Nonou's fate had been tragic.
He hoped that under his influence, he could change that ending.
The two soon arrived at Konoha Hospital.
"I'll go find Chiwa-sensei first."
Nonou said, a hint of reluctance in her voice.
She had always studied and trained alongside Natsuki. Being separated felt strange.
"I'll come pick you up later."
Natsuki nodded.
"Okay."
Nonou gave him a small smile, then turned and left.
Natsuki, meanwhile, made his way to Tsunade's office.
He raised his hand and knocked.
"Come in."
Tsunade's voice called out.
"Lady Tsunade."
Natsuki walked in and greeted her.
"Natsuki. Your suggestions have already received my teacher's approval."
A smile spread across Tsunade's face.
"I didn't do much—just made two suggestions."
Natsuki shook his head modestly.
"No need to be humble. My teacher and I both understand how much credit you deserve."
Tsunade paused. "What reward do you want?"
Here it comes.
Natsuki's spirit sharpened.
"I want the Sword of the Thunder God."
"The Sword of the Thunder God?"
Tsunade's eyes widened. "Why?"
"The Second Hokage is my idol."
Natsuki kept his expression earnest. "I hope that one day, I can be like him—creating all kinds of useful ninjutsu."
Obviously, his true goal was to establish a persona.
This way, when his system abilities were eventually exposed, he could claim they were self-created techniques.
But the most important reason was unlocking the Zoro template's fourth ability.
As for whether Tsunade or Konoha would actually grant his request—he estimated a 70% chance of success.
Because the Sword of the Thunder God wasn't particularly valuable to the village.
Yes, it had belonged to Senju Tobirama. But he had rarely used it.
Tobirama's true expertise lay in Water Release and forbidden jutsu—not kenjutsu.
The original timeline supported this conclusion.
In the story, a Konoha Chunin named Rokusho Aoi had ordered his student, Morino Idate, to steal the Sword of the Thunder God.
The fact that a mere Genin could steal it proved how little the village cared about the weapon.
"Self-created ninjutsu? You certainly have ambition."
Tsunade praised him after a moment of silence.
But she understood how extraordinarily difficult creating ninjutsu actually was.
Since Konoha's founding, there had only been one Senju Tobirama.
To create ninjutsu, one needed not only mastery of existing techniques but also terrifying foundational skills and creative thinking.
In her view, currently only Sarutobi Hiruzen and Orochimaru possessed such capabilities in Konoha—and even they were far inferior to Tobirama.
"Given your contribution, we can give you the Sword of the Thunder God."
Tsunade considered carefully before continuing. "But on one condition: your kenjutsu must gain my approval."
The Sword of the Thunder God had belonged to Senju Tobirama.
Tobirama was her great-granduncle. She didn't want his blade to gather dust in the hands of someone who couldn't wield it properly.
"I have some confidence in my kenjutsu."
Natsuki understood her meaning perfectly.
He currently possessed Zoro's swordsmanship prowess.
"Very well."
Tsunade smiled slightly and stood. "Follow me."
They arrived at a training ground near Konoha Hospital.
"Attack me with everything you have."
Tsunade drew a kunai.
"Yes, Lady Tsunade."
Natsuki gripped the ninja sword he had purchased tightly.
He leaned forward slightly—then charged at top speed.
A flash of silver sliced in from her blind spot, aimed at Tsunade's thigh.
He couldn't help it. At six years old, his height was a limitation.
Tsunade felt a flicker of surprise, but her expression remained unchanged.
She twisted her wrist. Her kunai deflected the blade with ease.
Clang!
Natsuki immediately shifted tactics.
He stepped back, gripped his sword with both hands, and slashed toward her waist with full force.
The strike was powerful. The blade was fast.
But to Tsunade, it posed no threat whatsoever.
She leaped, stepped on his blade mid-swing, and vaulted into the air.
Twisting her body, she thrust her kunai downward.
Natsuki felt a massive shadow descend over him.
He raised his sword to block.
The impact forced him backward.
He immediately withdrew his blade to dissipate the force. The moment Tsunade landed, his sword rose again—slashing toward her knee like lightning.
Tsunade nodded slightly.
Her right hand dropped, preemptively thrusting her kunai toward his wrist.
Natsuki changed direction hastily, blocking the strike.
The clash of metal rang out continuously.
His offense was fierce—but completely ineffective against Tsunade.
In less than ten minutes, he was panting heavily, utterly exhausted.
"That's enough."
Tsunade lowered her kunai.
Despite the prolonged exchange, she remained completely composed. Not even breathing hard.
She studied Natsuki, her expression thoughtful.
The level of his kenjutsu had far exceeded her expectations.
Especially for a six-year-old.
"You have exceptional talent with the sword. With a proper teacher, you might become the second White Fang of Konoha."
Tsunade offered her evaluation.
"Thank you for your praise, Lady Tsunade."
Natsuki wiped the sweat from his forehead.
It seemed he had passed the test.
"The Sword of the Thunder God is kept at the Hokage Building. I'll take you to retrieve it."
Tsunade had seen enough. She spoke without hesitation.
Natsuki exhaled with relief.
They soon arrived at the Hokage Building.
[Congratulations, Host. You have unlocked Zoro Template Ability 4: One-Sword Style — Iai: Lion's Song.]
When Natsuki took hold of the Sword of the Thunder God, the notification appeared before his eyes.
With Tsunade still present, he allowed himself only a glance before turning his attention to the weapon itself.
The Sword of the Thunder God wasn't a conventional blade.
It resembled a lightsaber more than anything else.
Only the hilt was physical. After infusing chakra, the blade would manifest.
The edge was composed of highly concentrated Lightning Release chakra.
This sword was ideal for Lightning Release users.
But even non-Lightning ninjas could wield it as an exceptionally sharp weapon.
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