Looking at the devastation caused by his punch, a trace of delight appeared on Yuya's face.
That strike—using Superhuman Strength as the core and stacking it with vibration force—was far more powerful than using vibration force alone.
Just as Yuya had expected, once Superhuman Strength and vibration force were combined, even high-tier B-rank ninjutsu could be shattered with a single blow.
It could be said that, at his current level, Yuya could practically sweep aside all ninjutsu below A-rank with one punch.
Moreover, because Superhuman Strength was driven by chakra, it could also offset part of the recoil produced by vibration force.
Superhuman Strength itself was a directional chakra burst, and when layered together with vibration force, it not only amplified the power but also allowed Yuya to focus the vibration in a single direction.
As a result, even when unleashing stronger vibration force, Yuya's body would not suffer increased backlash.
Of course, this technique wasn't without drawbacks.
Its chakra consumption was extremely high.
Far higher than using Superhuman Strength alone.
Yuya's vibration force, by itself, barely consumed chakra at all.
But Superhuman Strength was fundamentally a chakra-based technique.
When the two were stacked, the power increased dramatically—but so did the chakra cost.
If Yuya used this kind of punch repeatedly, his stamina and chakra would drain rapidly, making it difficult to sustain.
That said, using it once or twice—or even three to five times—was still well within his limits.
The physique granted by the True Eight Gates was, after all, exceptionally resilient.
And if he didn't stack Superhuman Strength with vibration force, relying on vibration alone was still effortless for him.
"Superhuman Strength plus vibration force… It's not strong enough to be considered a true trump card yet, but for now, it's definitely my strongest attack."
Yuya looked at his fist and muttered softly.
Such a move deserved a name.
At that moment, a phrase from canon surfaced in his mind—
'Unrivaled Strength.'
Yuya decided to borrow it outright.
This technique would be called—
Vibration Release: Unrivaled Strength!
"Hah… I really didn't expect it to take even me a full month to finally complete this move."
Stretching his body, Yuya chuckled.
Superhuman Strength, much like his Vibration Release, was a growth-type ability.
As his chakra reserves increased and his chakra control improved, it would continue to grow stronger.
And as Superhuman Strength grew stronger, its combined power with vibration force would naturally increase as well.
Another virtuous cycle of mutual amplification.
And once again, it all rested on the foundation of the True Eight Gates.
At this point, there was no doubt—
The True Eight Gates had become Yuya's core power.
His vibration force grew upon it.
Superhuman Strength relied on it as well.
Yuya actually felt this was a good thing.
At the very least, he didn't need to worry about losing his way.
As long as the True Eight Gates remained his foundation, his path forward was crystal clear.
Choosing the right growth path was extremely important.
Take Kakashi Hatake in canon as an example—
He became a genin at five, a chūnin at six, and a jōnin at twelve.
Yet from the moment he reached jōnin until the start of the main storyline, his growth stagnated.
Because of receiving Obito's Sharingan, combined with Rin's death, Kakashi lost his direction.
Low chakra reserves, too many jutsu—
—resulting in breadth without depth.
Even fighting Zabuza Momochi, he struggled immensely.
If it had been Kakashi's father—
Hatake Sakumo, the White Fang of Konoha—
He wouldn't have needed any ninjutsu at all.
Just his blade technique would have been enough to crush everything.
Yuya's path was now clear—
The True Eight Gates as the foundation.
Vibration Release as the main line.
A single punch—
—to sweep aside all ninjutsu!
Yuya firmly believed that as long as he followed this path without wavering, he would never be inferior to anyone.
Having successfully fused Superhuman Strength with vibration force, Yuya didn't stop training.
Instead, he immediately began refining it.
Another round of practice passed.
Before he realized it, noon had arrived.
Walking to the riverbank, Yuya casually washed himself, then habitually prepared to rest and eat lunch.
But at that moment, a figure approached him.
Yuya looked up in mild surprise.
"Kushina? How did you find this place?"
"Obviously by secretly following you."
Kushina grinned at him mischievously and waved her hand.
She was holding a bento.
"I was worried you wouldn't have enough to eat, so I brought you another one."
"I see… thanks."
Yuya smiled faintly, but a flicker of sharp, unreadable light suddenly passed through his eyes.
Kushina giggled and walked toward him with the bento.
At the instant she reached Yuya—
A cold flash of steel suddenly burst out from the bento box in her hand, instantly piercing straight through Yuya's body!
At the same time, "Kushina's" figure transformed into a man wearing a conical hat and a face covering, his eyes gleaming with chilling intent.
"Mission complete…"
"I need to withdraw quickly. If Konoha's ANBU catch up, it'll be troublesome."
Momochi Sakaki shook his head coldly as he looked at Yuya's corpse, a trace of disdain in his eyes.
Just because this was Konoha, he had been forced to go to such lengths to assassinate a brat.
Only now had he finally succeeded—and he'd still have to deal with Konoha's pursuit afterward.
What a hassle.
At least the kid had died a fitting death.
Slash—
Pulling the sword from Yuya's body, he turned to leave.
But in the next instant—
Yuya's body suddenly dissolved into white smoke, vanishing entirely.
"…What?!"
Momochi Sakaki's expression changed instantly.
A clone?!
When?!
In the very next moment, every hair on his body stood on end.
A terrifying sense of danger engulfed him.
Without a second thought, Momochi Sakaki rolled away, activating his defensive measures at the same time.
But a violent wave of vibration force still swept over him, slamming into his body.
"Vibration Release: Collapse!"
Yuya's voice rang out coldly.
He leapt down from a nearby treetop and brought his palm down mercilessly.
Against someone who had come to assassinate him, how could he possibly hold back?!
If he hadn't sensed that something was wrong with "Kushina" just moments earlier, he really might have been killed on the spot.
What were Konoha's shinobi doing?!
How could an assassin infiltrate this deeply?!
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