"What jutsu?"
The moment she heard Gojo Yoru was going to teach her a technique, Uzumaki Kushina's interest instantly flared up.
Staring at the balloons in Yoru's hands, she seemed to realize something. Her expression shifted. "Wait… don't tell me—besides Phantom Body Flicker—you've developed another jutsu too?"
After all, a technique that combined the Clone Technique and Body Flicker had nothing to do with balloons no matter how you looked at it!
"Heh… your reaction speed is actually pretty good this time."
Yoru chuckled teasingly, then raised his right hand, palm up.
Whoosh— It sounded like a sharp blade of air slicing through the atmosphere.
A blue-white spiral appeared out of thin air above Yoru's palm, spinning at high speed like a gear.
Gradually, the spiral grew larger and denser.
Look closely, and you'd see it split from one into many—becoming a white core made of countless tiny vortices.
Meanwhile, the blue energy on the outside—initially just a thin film—swelled and thickened, turning into a billiard-ball-sized sphere that rotated at an irregular, furious pace.
From nothing to something, the inner core and outer shell forming together—the entire process of condensing the Rasengan was basically showing off.
Even Kushina could tell just how difficult this jutsu must be to train.
"Gulp…"
Kushina stood there slack-jawed for a long time before finally swallowing hard and looking at Yoru with a trembling voice. "Is that… a hand-signless jutsu?"
"Correct. It's an attribute-less, hand-signless jutsu called the Rasengan," Yoru said with a smile. "It doesn't require any chakra nature or nature transformation. As long as your chakra control reaches a certain level, you can learn it."
"A jutsu this precious… you're really going to teach it to me?" Kushina stared at him in disbelief.
"Compared to me, the Rasengan fits you better—someone with massive chakra," Yoru said sincerely.
Why could canon Naruto get so far with the same few moves?
Because the Rasengan and the Multiple Shadow Clone Technique were the jutsu most suited to a Nine-Tails jinchūriki.
Aside from not being Asura's reincarnation, Kushina was basically an upgraded Naruto.
With the complete Nine-Tails and an awakened Uzumaki bloodline, her chakra would be no weaker than Naruto's—only stronger.
Add her natural brute strength, and Multiple Shadow Clones, Rasengan, and monstrous strength strikes were the perfect kit for her.
Just imagine it: Kushina makes hundreds—thousands—of shadow clones. Half of them carry Rasengans, while the other half throw monstrous strength punches and heel drops.
Just thinking about it made you pity her enemies.
"Yoru, you…"
Kushina, of course, had no idea about Yoru's "cultivation plan."
All she knew was that his words hit her right in the heart. Her eyes reddened, mist rising uncontrollably.
Looking at Yoru—someone she'd only known for a few months, yet who was willing to teach her a super-rare hand-signless jutsu—Kushina's voice caught as she asked the question every girl loves to ask:
"Why are you being so nice to me?"
But just as the moment reached peak "affection farming" potential, Yoru completely ruined it with a deadpan answer:
"Can't be helped. You live in the First Hokage's house. If I flatter you, young lady, then later I can stroll around Konoha like I own the place."
"…Gojo Yoru, you bastard!"
Kushina's moved expression instantly turned into gritted teeth, right on schedule.
"Enough nonsense. Are you learning it or not?" Yoru snapped.
"Of course I'm learning! A rare jutsu handed to me for free—why would I refuse?" Kushina bared her teeth again. "I'm going to use the jutsu you teach me to beat you up!"
"Save the dreams for when you're asleep," Yoru said with full disdain. Then he tossed her a bag of balloons. "Take these to the bathroom and fill them with water. I'll teach you the first stage."
"Gojo Yoru! You'll regret this!"
Bang! The bathroom door slammed shut violently.
Yoru nearly choked on his own words, a whole rant stuck in his throat.
Unable to think of a comeback, he suddenly felt like he still hadn't really blended into this world—his "bloodline" wasn't pure enough at all.
But a gentleman's revenge can wait ten years.
He'd remember this. Ten years from now, he'd repay it a hundredfold!
Next, a training session guaranteed to leave someone soaked began inside Gojo Yoru's bathroom.
It was precisely because the Uzumaki clan—like the Hyuga—naturally possessed strong chakra-control talent, and because Kushina had huge chakra reserves, that Yoru dared to teach her the Rasengan now.
If this were the old Yoru—calculating every step, worrying daily that someone would try to harm him—he would only have secretly taught Kushina the Rasengan after she became the Nine-Tails jinchūriki.
But now, Yoru taught her early for one simple reason: he wanted her to gain strength fast, so that in the future, when she became the jinchūriki, she wouldn't be so afraid of Kurama.
And because the Rasengan is pure chakra control, once Kushina learned it, she'd also learn monstrous strength techniques and sealing arts twice as fast with half the effort.
Put another way, this jutsu was the key that would unlock the Uzumaki clan's chakra-control talent.
…
At dusk, in the "Big Pillar" household.
"Kushina, what are you doing?"
Tsunade, returning home from work, saw Kushina holding a water-filled balloon yet standing perfectly still. Curious, she walked over.
"I'm trying to inject chakra into it and make the water spin randomly—so it bursts the water balloon without needing brute force," Kushina said with a serious little face, eyes locked on the balloon in her hand.
"And what's the point of that?" Tsunade was even more confused.
If it was chakra-control training, the Five Great Villages already had a standardized system.
Beginner: tree climbing. Intermediate: water walking. Advanced: medical ninjutsu or sealing arts.
By that logic, Kushina should have an inherent advantage in this area.
Was this some new method she invented?
"This is… a secret."
Kushina was about to explain, but then she remembered how rare hand-signless techniques were and immediately clamped her mouth shut.
Without Yoru's permission, she couldn't reveal the Rasengan.
"You little brat—so you won't even tell me?" Tsunade exploded, raising her arm as if to smack Kushina.
"No, no, no…"
But no matter how Tsunade tried to scare her, Kushina refused to reveal a thing.
Tsunade could only give up in frustration.
Back inside, Tsunade looked at Uzumaki Mito—sitting by the kotatsu—and still couldn't suppress her curiosity.
"Grandma, do you know what Kushina is doing?"
"Tsuna, you're already an adult," Mito said with a gentle smile. "Don't pry into secrets between the younger kids."
"Fine…"
Tsunade pouted like a child.
Unfortunately, no one was lucky enough to witness that last trace of her childish side.
~~~
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