Bang!
A thick tree that would take two people to wrap their arms around was reduced to splinters under Tsunade's fist.
Itsuki hadn't even seen her gather strength. She had simply stepped forward and struck.
Tsunade under a 400% buff was terrifying.
"Super Strength… that's what people outside call this ability." Tsunade spoke seriously. "But in the Senju Clan, we call it Chakra Burst. It's one of our inherited techniques."
"The principle is simple. You condense chakra, compress it, and release it all at once. It requires extremely precise chakra control."
"As long as your control is high enough, you can release chakra from your hands, feet, or any part of your body. You can even release it all around you at once, with yourself as the center."
Itsuki's eyes widened. Isn't this basically the repulsive force of the Rinnegan?
Except the Rinnegan did it with just a glance, while Chakra Burst demanded chakra control beyond S-rank ninjutsu.
From what he remembered, only the Hyuga Clan could release chakra through their whole body, and even then, it was only for techniques like Gentle Fist.
Compared to that, Chakra Burst was on a completely different level.
"Aunt, besides your hands and feet… is there anywhere else you can release chakra?" Itsuki asked curiously.
"The way to true strength lies in quality, not quantity!" Tsunade's expression hardened. "Focus on one path and push it to the extreme — beyond the reach of anyone else. That is the mark of a real powerhouse."
"If you try to learn everything but master nothing, you'll only be half-baked. Even if you balance out your abilities with no clear weaknesses, you'll never touch the peak."
"You were born with an incredible physique and massive chakra reserves. If you master Chakra Burst, your power could surpass mine someday."
Itsuki smiled faintly. That might be true for others… but I have my golden finger.
Why settle for one road when I can take them all?
So he pressed again. "Alright then, Auntie — besides your hands and feet, where else can you release chakra?"
Tsunade's breathing hitched.
"Only hands and feet! Nowhere else! Wait—" Her amber eyes narrowed. "You're not thinking something weird, are you?"
Itsuki had let his gaze slip toward her curves.
Her cheeks turned scarlet, and without warning she socked him right in the head.
"Whoa, no, no! Absolutely not!" Itsuki yelped, scrambling away.
Boom!
Her punch missed, detonating the air like a cannon blast. The sonic boom alone made him flinch.
Holy shit, that's violent. If that landed, I'd be rolling on the floor crying.
"If you want to learn how to beat someone up, you have to first learn how to get beaten up."
Tsunade's lips curled into a sly grin. "So today's training is simple — you're not leaving this training ground until you survive my attacks!"
Itsuki looked around. The "training ground" was just his backyard — barely a hundred square meters, meant for basic physical drills.
Now Tsunade wanted to chase him here? In this tiny space?
One wrong move and he'd be paste.
"Don't worry," she added, almost reading his mind. "I won't use area-of-effect attacks. No terrain destruction. Just you, me, and dodging."
Itsuki's face twisted pitifully. "Auntie, I'm your only blood relative! Do you really have the heart to hit me? Why don't you just teach me the technique directly? I can learn it fast!"
"I know you're talented, and yes, you could pick it up quickly," Tsunade admitted.
Then her gaze hardened. "But I'll say it again. If you want to learn how to beat someone up, you must first learn how to take a beating. If you don't want to get hit… then dodge."
Because no matter how strong you were, there would always be someone stronger.
And before you mastered attack, you had to master defense — or at least survival.
Tsunade would never allow the same tragedy that happened to Nawaki to repeat with Itsuki.
Even if it meant beating him black and blue, she'd make sure he lived.
With no choice, Itsuki began dodging.
At first, Tsunade held back, gauging his level with half-hearted strikes.
But when he kept slipping past every blow, she adjusted, speeding up and pressing harder.
That's when Itsuki realized something: Chakra Burst wasn't just for offense.
She gathered chakra at her feet, detonated it, and shot forward like a human cannon — a movement faster than even the Body Flicker Technique.
No, no, no! This isn't her canon level.
If Tsunade could balance this kind of speed with her strength, she wouldn't have lost to Madara so one-sidedly.
Which meant… this was the 400% buff at work.
Itsuki almost cried. Seriously? Even my golden finger is working against me now?!
Soon he was panicking, Tsunade's fists and kicks filling his vision. He barely dodged them by a hair's breadth.
His breathing ragged, a thought hit him. Wait. She said no ninjutsu… but she never said I couldn't use mine.
"Sharingan!"
His pupils bled red, three tomoe spinning into place.
He'd forgotten his contact lenses after Shizune rushed him through his morning routine.
With the Sharingan's dynamic vision, his movements instantly smoothed out — turning from frantic scrambling into fluid, almost dance-like dodges.
Tsunade's sharp eyes caught it, and a grin tugged at her lips.
So this kid trusts me enough to reveal his Sharingan already?
What surprised her more was that he already had a fully-matured three tomoe.
"But so what if you have the Sharingan?" she smirked. "I've beaten plenty of Uchiha in my day."
She pushed her buffed strength and speed even higher, fists blurring.
In normal circumstances, even a Sharingan user would struggle against her.
And with her quadruple blessing active, she doubted anyone in the ninja world could withstand her strikes.
But Itsuki didn't back down this time.
Instead, he grinned, twisted his body, and threw a punch to meet hers head-on.
Shit!
Tsunade's heart lurched. But it was too late to pull back.
BOOM!
Their fists collided, shaking the entire training ground like an explosion.
The shockwave split the earth, air rippling outward like a pressure cooker bursting.
Tsunade stumbled two steps back, her momentum broken.
Itsuki stood shaky but firm.
His arm was wrapped in splintering wood armor — a Wood Release shield he'd conjured in the instant before impact. His sleeve had been blasted to dust.
He had copied Tsunade's punch with the Sharingan, though his control wasn't perfect.
He compensated by reinforcing his arm with Mokuton.
And yet, the reason he held his ground wasn't the technique — it was the monstrous chakra reserves his body poured into that single strike.
Tsunade, for her part, had pulled her punch at the last second. Otherwise, the outcome might've been very different.
"Itsuki!!" Seeing his shredded arm and broken clothes, Tsunade panicked.
Her amber eyes widened as she rushed forward in alarm…
...
Author's Note:
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