Minato's Shock—Shimizu is the Inventor of the Rasengan

Meanwhile, at the Hokage's office:

"Hokage-sama, Uzumaki Kushina has gone beyond the village barrier without authorization."

In the silent office, a member of the Anbu appeared suddenly, kneeling on one knee.

"What?"

Sarutobi Hiruzen slammed his desk, causing his pipe to fly off the table.

Clatter!

The pipe hit the ground, scattering tobacco everywhere.

Sarutobi Hiruzen had no time to care about his beloved pipe. He immediately stood up and asked, "What about the Anbu assigned to monitor her?"

The fox-masked Anbu hesitated for a moment and then replied, "They were restrained by Kushina's sealing techniques. It appears that her proficiency in sealing has been increasing as she ages..."

The speaker chose his words carefully; this was no trivial matter. He suspected that his colleagues would likely face demotions after this incident.

"Which direction did she go?"

"The Third Training Ground."

"If I recall correctly, Jiraiya is near that area. Take additional sensory-type shinobi and bring Kushina back with Jiraiya's assistance."

"Yes."

After the Anbu disappeared, Sarutobi Hiruzen picked up his pipe and began preparing his armor. If the situation escalated, he would have to be ready to prevent the Nine-Tails from wreaking havoc in the village.

Third Training Ground

Boom!

Malicious chakra erupted once again, and a new chakra tail extended from Kushina's back.

Dark eyeshadow appeared at the corners of her eyes, whisker-like marks deepened on her cheeks, and even her lips turned black. She looked bewitching, like a black rose adorned with thorns.

"Without Minato's sweet-talking, the Nine-Tails is even more aggressive, huh?" Shimizu thought to himself.

The surge of chakra was overwhelming. If this wasn't resolved quickly, Jiraiya would arrive, and Kushina's favorable impression of him wouldn't increase much.

A chakra tail extended several meters and slammed toward Shimizu.

The violent wind whipped his black hair wildly and bent the trees behind him, sending leaves flying everywhere.

"I'll have to take it head-on," Shimizu resolved.

He gathered chakra at his feet to stabilize his stance.

The Nine-Tails' tail was two meters wide, and the fan-shaped attack formed by several tails left him no room to evade.

His powerful techniques, such as the Heavenly Prison Flame Sword and Yasaka Magatama, required charging time, and other elemental ninjutsu had startup delays. Shimizu calmly considered which technique to use.

In the end, a faint blue chakra sphere appeared rapidly in his hand, the sharp rotating chakra visible from the outside.

"Rasengan."

Rasengan was Shimizu's highest instant-damage technique. Since mastering it, this was the first time he used it in a real battle.

Boom!

The collision created a powerful shockwave.

Minato Namikaze, who was nearby, was almost blown away. He looked at Shimizu's technique in shock.

"It's so stable," Minato murmured.

Despite the tears streaming down his face from the gusts, he desperately tried to observe the technique more closely.

He could also form a chakra sphere, but the problem was that it would either wobble uncontrollably or explode immediately—it was extremely difficult to control.

He had been researching this for nearly three years without solving the issue.

Could it be that the technique he was trying to create had already been mastered by Shimizu?

Had Shimizu already invented the very technique he had been striving to develop?

The Nine-Tails' tail was pierced by Shimizu's Rasengan, causing it to regenerate slowly. Seizing this opportunity, Shimizu strengthened the sealing chakra in his left hand, temporarily immobilizing Kushina.

"Look at me, demon fox," Shimizu commanded.

His black pupils revealed three swirling tomoe, gleaming blood-red.

The Rasengan dissipated in his right hand as he forcefully turned Kushina's face toward him, locking eyes with her and unleashing his ocular power.

Three-Tomoe Sharingan!

The Nine-Tails' slit pupils contracted sharply. Another Uchiha!

In the dark and damp mental space, a figure descended from the highest point.

The Nine-Tails tensed, its muscles taut as it warily watched Shimizu approach.

The psychological scars left by Uchiha Madara decades ago ran deep.

"Shimizu!"

Kushina scrambled to her feet and staggered toward him.

"Now that we're in the mental space, the Nine-Tails' strength is weakened. If we work together, we might win," Shimizu said.

Kushina took a few deep breaths to steady herself and nodded.

The sudden outbreak of the Nine-Tails had caught her off guard.

Now that she was prepared, the Uzumaki clan's extensive sealing techniques were the perfect counter to the Nine-Tails.

"Hmph! Even as a spirit, my power is beyond what you two brats can imagine!"

The Nine-Tails opened its massive jaws, condensing blue and purple-black chakra particles into a dense, ominous sphere.

"Kushina, use your clan's sealing techniques!" Shimizu urged.

In the original timeline, Kushina had easily restrained the Nine-Tails with her sealing techniques. Now that she was calm, she should be able to do the same.

Kushina nodded, and countless chakra chains emerged from her graceful body, binding the Nine-Tails and halting its attempt to form a Tailed Beast Bomb.

Shimizu seized the moment, forming a fireball in his palm that split into eight fiery magatama.

The eight flaming orbs spiraled around his hand. When they reached their peak, Shimizu used a fire-based teleportation technique to leap into the air.

"Fire Release: Yasaka Magatama!"

He hurled all the fiery magatama at the partially formed Tailed Beast Bomb.

Unlike Minato, who would recklessly use Rasengan to directly clash with a Tailed Beast Bomb and then end up hospitalized, Shimizu preferred a safer approach: attacking from a distance.

Boom!

The Tailed Beast Bomb exploded on the Nine-Tails' face, sending it flying.

Ripples spread through the mental space like waves.

"Damn brat!"

The Uchiha brat had truly infuriated the Nine-Tails.

"Do you really want to test the power of these eyes?" Shimizu's Sharingan gleamed as he stared down the beast.

In reality, he wouldn't stand a chance in a direct one-on-one fight with the Nine-Tails.

But in this mental space, where Kushina's sealing techniques had suppressed most of its power, the odds were in his favor.

The Nine-Tails bared its teeth and instinctively kept its distance, wary and tense.

"Kushina, suppress its chakra."

"Got it."

Kushina quickly sealed away the Nine-Tails' overflowing chakra, causing the tailed beast cloak on her body to dissipate.

The Nine-Tails glared at Shimizu but ultimately did nothing as Shimizu left.

Back in the real world, Shimizu supported Kushina, helping her stay upright.

He guided her toward Minato and stood between them, healing both simultaneously.

The tailed beast chakra cloak had severely burned Kushina's skin after she manifested four tails.

This was why most jinchūriki didn't fully cloak themselves in tailed beast chakra, opting instead for partial transformations.

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