Chapter 15 – The Shaking Power of the Gura Gura no Mi
"This guy's Taijutsu... it's stronger than most Jōnin."
Yusuke narrowed his eyes, his breath a little heavier now.
"If this keeps up, I'm gonna get hurt. And if I get seriously injured here... I might actually die."
He bit his lip in frustration. Things weren't going his way.
It was true that he'd grown stronger—far beyond an average Genin—and his chakra reserves easily rivaled a Chūnin. But even so... he hadn't mastered any high-level Ninjutsu yet. Against someone whose raw physical ability matched a full-blown Jōnin, relying on Kenjutsu alone wasn't going to cut it.
"Should I use the Gura Gura no Mi now...?"
He hesitated.
If the fight dragged on, using that power unnoticed would be nearly impossible. And if more enemies showed up…
"No. I need to end this. Right now."
With renewed resolve, Yusuke charged. His fist gleamed with a faint white hue, the air around it trembling like ripples in still water.
— — —
The Vice Leader of the Cult of Jashin sneered, cold and confident.
Arrogant little brat. I'll offer your head to Lord Jashin myself.
He swung his double-edged crescent scythe with brutal force toward Yusuke.
CRACK—!
Fist and scythe collided.
A wave of shock blasted outward. The air around them cracked like shattered glass. A web of fractures spread rapidly through the space, resonating with a sound like bones snapping and steel groaning under pressure.
The edge of the scythe... splintered.
SNAP!
The weapon broke in half.
The Vice Leader's eyes went wide. He hadn't even processed what had just happened.
Before he could react, Yusuke's second punch landed squarely on his forehead.
BOOM!!
The cultist's body slammed into the ground, headfirst. The stone beneath cracked open like an eggshell. He didn't move again.
Yusuke stood still for a moment, confirming the kill. Then, without wasting time, he turned and joined his squad, quickly dispatching the remaining cultists still crawling out of the cavern.
— — —
"You've gotten even stronger, haven't you, Fang?" Shisei's voice echoed calmly from behind his high collar.
"You guys weren't half-bad either," Yusuke replied, clapping his shoulder.
Then he turned to the other two.
"Bug. Nightgale. Stay out here with the forces from the Hidden Hot Water Village. Sun and I will go in."
"But... it's their main base, right? Isn't it too dangerous?" Kaori asked anxiously.
"Relax. Their elite fighters are all engaged outside with Captain Black Hound. The inside should be mostly empty. Besides, if we're late... those kids won't survive."
"…All right. Just be careful."
They nodded. They knew Yusuke wasn't reckless. If things went south, he'd pull out.
"Sun, let's go."
"Right behind you."
— — —
The interior of the cave was massive.
But it was pitch black, making it hard to see even a few meters ahead.
"Sun, activate your Byakugan. Find the Cult Leader's location," Yusuke ordered.
"Byakugan."
With a focused seal, Inaka's veins bulged near her temples.
"…Right corridor! Follow me!"
She darted ahead.
A cultist leapt out from behind a rock—he didn't even get the chance to scream.
SHNK!
Yusuke cut him down in one swift motion.
"No time to waste. If we're late, their leader might escape."
"Inaka, are you sensing any strange chakra ahead?" he asked, sprinting.
"Yes! It's close! Their chakra... it's twisted. It has to be them!"
— — —
Meanwhile, inside a strangely carved stone chamber—
A man stood before a small unconscious boy laid out on a dark altar.
"From this moment on... you shall become Jashin's-sama vessel on earth..."
"Hail Jashin-sama!"
The surrounding cultists raised their fists and chanted fanatically.
One knelt down beside the leader.
"Leader! Two intruders are approaching fast!"
"Take the boy. Get him out of here. The rest of you—hold them off! Use their blood as a tribute to Jashin!"
The Cult Leader laughed, bloodlust thick in his voice.
"Understood!"
An elder cultist grabbed the unconscious boy—Hidan—and fled through a back corridor.
The Cult Leader grinned.
"Just two little rats, huh? Fine. Their blood will suffice. KILL THEM!!"
Dozens of cultists surged forward.
"Inaka. Stay sharp. If things get ugly, don't hesitate—run back to Captain Black Hound."
"Got it."
She knew better than to argue. If she stayed too long, she'd only hold Yusuke back.
— — —
Conqueror's Haki.
As the cultists charged, Yusuke released his aura.
A pulse of pure dominance blasted out from him like a tidal wave. The air shook.
Within seconds, half the cultists dropped unconscious.
Inaka muttered under her breath, "...He used that technique again."
No time to be amazed.
The two of them dove into the chaos.
Three-Sword Style: Demon Slash.
Eight Trigrams Sixty-Four Palms!
Yusuke tore through the enemy ranks like a storm, his swords a blur. Inaka danced between gaps in the formation, her palm strikes precise and unrelenting.
— — —
"Hold the line, you worthless trash!!"
The Cult Leader finally entered the fray.
But—
Observation Haki.
Yusuke had already sensed him.
Airquake.
His fist pulsed with concentrated pressure. The moment he punched, the space around the Cult Leader rippled—then cracked.
Invisible shockwaves exploded outward.
"What the hell is this?!"
The Cult Leader screamed, lifting his weapon to guard.
But the blow landed with nearly full force.
The weapon held... barely.
His arm didn't.
A sickening snap echoed. Blood sprayed. His forearm was shattered beyond repair.
Inaka, watching through her Byakugan, shuddered.
She saw everything—each crack, each fracture—clear as day.
That wasn't something a normal human could do.
Yusuke didn't care.
He already knew his power wouldn't stay secret forever.
He wasn't going to live his life afraid of being found out.
Like Uchiha Madara once said—a coward will always remain a coward. True power doesn't hide.
Besides, once this mission was over, he'd earn another Devil Fruit.
The system had told him before—even a common Devil Fruit can drastically enhance chakra and physical abilities.
But Gura Gura no Mi… if mastered to its peak—Whitebeard's level—his strength would soar beyond limits.
That was why... he didn't care anymore.
— — —
"You bastards... Even if reinforcements have arrived... I'll kill every last one of you!!"
The Cult Leader howled with laughter.
Something's wrong!
Yusuke's eyes widened.
Shave!
He flashed to Inaka's side and yanked her away.
Just in time.
GRAAAHH!!
A strange ritual circle lit up beneath them.
Nearby cultists screamed as their bodies were crushed—blood surged toward the center.
The Cult Leader stood in the middle.
His broken body was healing rapidly.
— — —
Fire Release: Dragon Flame Bullet!
Black Hound appeared, forming hand signs in a blur. A blazing stream of fire shot forward, giving Yusuke room to fall back.
The Cult Leader howled again, leaping into the midst of the Konoha shinobi with crazed strength, swinging his weapon like a demon.
"Captain! Don't let him touch anyone's blood!!"
Yusuke shouted.
Black Hound didn't hesitate.
Another Dragon Flame Bullet surged forward.
At the same time, he closed the distance and drove his blade into the Cult Leader's chest.
"Captain, move—NOW!"
Yusuke warned again.
Black Hound immediately retreated.
But...
The Cult Leader still stood.
"…An immortal body?" Black Hound muttered grimly.
He remembered the warning from the Steam Nation's shinobi.
And then—
The Cult Leader grabbed a dying Jōnin from the Hot Water Village.
"HAHAHA!! EMBRACE JASHIN-SAMA!!"
He drew a blood rune on the ground and plunged a dagger into his own heart.
Blood gushed from the wound—but no fatal injury appeared.
The Jōnin, however, suddenly convulsed and collapsed—blood pouring from his chest.
He was dead.
"...What... the hell?" Black Hound's eyes widened.
"Captain! That 'immortal' power has a time limit—but we don't know how long. Our only option might be…"
Yusuke's expression darkened.
"…we destroy him completely."
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