Gojo Yoru, You Will Regret This!

"What kind of ninjutsu?"

Hearing that Gojo Yoru was going to teach her a ninjutsu, Uzumaki Kushina immediately perked up with interest.

Looking at the balloon in Gojo Yoru's hand, Kushina seemed to think of something, her expression shifting slightly as she said, "Wait... are you saying that, besides the Phantom Body Flicker Technique, you've developed other ninjutsu too?"

After all, the training method for a technique combining the Clone Technique and the Body Flicker Technique had nothing to do with a balloon, right?

"Heh... you're pretty quick on the uptake this time."

Gojo Yoru teased with a smirk, then raised his right hand, palm facing upward.

With a swoosh, like a sharp blade of wind cutting through the air.

A wisp of blue-white air current appeared out of nowhere above Gojo Yoru's palm, then began spinning at high speed like a gear.

Gradually, the volume of this air current grew larger, and its density increased.

Looking closely, it had transformed from one into ten thousand, becoming a white core made up of countless tiny air currents.

Meanwhile, the blue energy on the surface, starting from an initial thin film, gradually expanded into a ping-pong-ball-sized energy sphere, spinning irregularly at high speed.

From nothing to something, the two coexisting—the entire process of forming the Rasengan was practically a display of skill.

Even Kushina could tell how difficult it was to train in this ninjutsu.

"Gulp..."

Kushina stared dumbfounded for a long while before swallowing a mouthful of saliva, looking at Gojo Yoru with a trembling voice: "Is this... ninjutsu without hand seals?"

"That's right, it's a non-elemental ninjutsu without hand seals, called the Rasengan." Gojo Yoru said with a smile. "It has no requirements for chakra nature or nature transformation. As long as your chakra control meets a certain condition, you can train in this technique."

"A technique this precious, you're really going to teach it to me?" Kushina looked at Gojo Yoru in disbelief.

"Compared to me, the Rasengan suits you better with your massive chakra." Gojo Yoru said sincerely.

Why was Uzumaki Naruto from the Original Work able to rely on one trick to get by everywhere?

The reason was that the Rasengan and the Multiple Shadow Clone Jutsu were the most suitable ninjutsu for a Nine-Tails Jinchuriki.

Aside from not being the reincarnation of Asura's chakra, Kushina was essentially an enhanced version of Naruto.

With a complete Nine-Tails and the awakened bloodline of the Uzumaki Clan, her chakra was only stronger than Naruto's, never weaker.

Add in her natural Monster Strength, and the Multiple Shadow Clone Jutsu, Rasengan, and Monster Strength Fist were the most fitting techniques for her.

Just imagine: Kushina creates hundreds or thousands of shadow clones, half of them holding Rasengan, while the other half unleash Monster Strength Fist and Painful Sky Leg. The mere thought of that scene made her feel sorry for her enemies.

"Yoru, you..."

Kushina had no idea about Gojo Yoru's training plan.

At that moment, she was struck right in the heart by his words, her eyes growing moist, uncontrollably misting over.

Looking at Gojo Yoru, who she had only known for a few months yet was willing to teach her such a rare, seal-less ninjutsu, Kushina's voice choked up as she asked a question every girl loves to ask: "Why are you so good to me?"

But faced with this atmosphere ripe for building goodwill, Gojo Yoru ruined it by replying, "No choice. Since you're living in the First Hokage's house, I figured I'd butter you up now, Miss. Then I can do whatever I want in Konoha later."

"...Gojo Yoru, you bastard!"

The look of gratitude on Kushina's face instantly twisted into a grit-toothed snarl.

"Less talk. Are you learning or not?" Gojo Yoru said impatiently.

"I'm learning! A rare ninjutsu for free—why wouldn't I take it!" Kushina bared her teeth again. "I'll use the technique you teach me to give you a good thrashing."

"Save the dream talk for when you're actually dreaming." Gojo Yoru said disdainfully, then tossed a bag of balloons to Kushina. "Take these to the bathroom and fill them with water. I'll teach you the first stage first."

"Gojo Yoru, you'll regret this!"

With a bang, the bathroom door was slammed shut violently.

Gojo Yoru had a mouthful of retort stuck in his throat, uncomfortable and unable to get it out.

Not knowing what words to fire back with, he suddenly felt like he still hadn't fully integrated into this world—his bloodline wasn't pure enough.

But a gentleman's revenge is never too late.

He'd remember this grudge. Ten years later, he'd repay it a hundredfold!

And so, a training session destined to end in a soaking wet mess began in Gojo Yoru's bathroom.

It was only because the Uzumaki Clan, like the Hyuga Clan, was born with strong chakra control talent, plus a massive chakra reserve, that Gojo Yoru dared to teach Kushina the Rasengan now.

If it were the old him, who calculated every step and worried all day about others harming him, he would only have secretly taught Kushina the Rasengan after she became the Nine-Tails Jinchuriki.

But now, Gojo Yoru was teaching her the Rasengan early simply because he wanted her to quickly boost her strength, so that when she became the Jinchuriki, she wouldn't be so afraid of Kurama.

Moreover, the Rasengan was a product of chakra control. Once Kushina mastered this technique, learning Monster Strength Fist and Fuinjutsu would be twice as effective with half the effort.

In other words, this technique was a key to unlocking the Uzumaki Clan's chakra control talent.

Dusk, at Hashirama's house.

"Kushina, what are you doing?"

Tsunade, returning home from work, saw Kushina standing still, holding a water-filled balloon in her hand, and couldn't help but curiously approach.

"I'm trying to inject chakra into it, making the water inside spin chaotically, so I can burst this water balloon without using force." Uzumaki Kushina's small face was serious, her gaze fixed on the water balloon in her hands.

"What's the point of that?" Tsunade was even more confused.

If it was about training chakra control, the Five Great Shinobi Villages already had a systematic set of exercises.

Beginner level: tree climbing. Intermediate level: water walking. Advanced level: Medical Ninjutsu or Fuinjutsu.

In this regard, Uzumaki Kushina should have a natural advantage.

Could it be that this was a method she'd invented herself?

"This is... a secret."

Uzumaki Kushina was about to explain, but suddenly remembered the rarity of Ninjutsu without hand seals and quickly shut her mouth.

Without Gojo Yoru's permission, she couldn't reveal the Rasengan.

"Fine, you little brat, you won't even tell me, huh!" Tsunade erupted in anger, swinging her arm to teach Uzumaki Kushina a lesson.

"No, no..."

But no matter how she threatened, Uzumaki Kushina refused to reveal a single thing.

Tsunade could only give up in frustration.

Back inside the house, Tsunade looked at Uzumaki Mito sitting by the kotatsu and couldn't suppress her curiosity: "Grandmother, do you know what Kushina is doing?"

"Tsunade, you're already an adult now."

Uzumaki Mito smiled kindly. "A secret between juniors—you, as a senior, shouldn't pry into it."

"Fine."

Tsunade pouted like a child.

Unfortunately, no one was lucky enough to witness this last trace of her childish side.