The next instant, Shinichi flicked his hand toward the charging samurai.
BOOM!
That single spark of crimson flame left his fingertip and detonated like it had ignited an invisible sea of oil. In a heartbeat it exploded outward—six meters tall, thirty meters wide—a roaring tidal wave of solid red fire.
The flames were dense as molten lava, scorching everything in their path as they slammed straight down Isshin's charge line.
"What the hell is that?! Fire Release?!"
"Did anyone see him make seals?!"
"No seals! He just… flicked it out!"
"Instant-cast? Seal-less Fire Release?!"
"No way—that's impossible!"
"Impossible? Dude, this is the same genius who created the Rasengan. Seal-less A-rank ninjutsu is literally his thing!"
The stands erupted. Thousands of eyes bulged as people watched something that broke every rule they knew about ninja arts.
In the VIP box, Uchiha Fugaku shot to his feet. His Sharingan spun to life, three tomoe locked on the surging wall of flame and the boy behind it. For the first time all afternoon, genuine shock crossed the clan head's face.
"That level of Fire-nature chakra conversion and shape control… who the hell is the real Uchiha here?"
On the platform, Mitokado Homura pushed up his glasses, eyes sharp. "Hiruzen… is this the finished product of the Fire Release Nintaijutsu the boy's been developing? He can fire it off instantly in the middle of a fight like this?"
The Third exhaled a long plume of smoke, the blazing red light dancing in his eyes. "Yeah. He calls it Flame Sweep. He ditched the extreme dual shape-and-nature transformation for pure speed and stability. Fast, practical, no seals."
Koharu stared at the inferno swallowing half the arena and let out a rare, stunned breath. "This kid's talent and follow-through with ninjutsu creation… it's just…"
She couldn't even finish the sentence.
Down in the arena, Isshin's eyes flashed with surprise for half a second—then pure, savage delight.
"NOW we're talking!"
He didn't dodge. He roared, raised the massive halberd high, and poured every ounce of chakra into it. With a thunderous downward slash, a solid, crescent-shaped blade of compressed air ripped forward and split the lava wave clean in two.
But the instant the flames parted—
A low, earth-shaking roar erupted from behind the fire.
Shinichi had already launched himself skyward. In his right hand hovered a massive, blood-red orb of spiraling flame—exactly like the Rasengan, except this one was pure molten hell.
Fire Release: Great Flame Rasengan!
The sphere spun violently, glowing like a miniature sun. The heat warped the air and scorched the ground below.
The stands lost their minds.
"That's his Rasengan?!"
"It's on fire! He fused Fire nature into it!"
"How is he even controlling that much power?!"
Shinichi's eyes locked on target. Without hesitation he hurled the blazing orb downward like a falling star.
The flaming sun screamed through the air, trailing a tail of superheated wind.
At the last possible second, a thick, ancient bronze sheen flashed across Isshin's entire body.
Copper Head, Iron Arms!
BOOOOM!
The collision was cataclysmic.
A blinding explosion of flame and force ripped across half the arena. The barrier around the stadium groaned under the pressure. Spectators threw up their arms, shielding their eyes from the white-hot glare.
When the light and smoke finally faded, Isshin was still standing.
The bronze giant had planted his feet and taken the full-force Great Flame Rasengan head-on. Flames and spinning chakra raged across his metallic skin, burning and screeching, but he hadn't been moved an inch.
The ground beneath him was a cratered ruin.
Shinichi dropped from the air and landed hard on the far side of the arena. His right arm trembled, sleeve scorched, skin flushed red. He was breathing hard but still on his feet.
A stunned silence fell over the entire stadium.
Then—
CLAP… CLAP… CLAP…
Isshin started clapping. Slow, deliberate, powerful. He walked out of the smoke, face flushed from the heat, a huge, satisfied grin splitting his rugged features.
"Excellent! Absolutely excellent!"
His voice boomed across the arena, full of raw admiration.
"Solid sword foundation, clever shifts in combat, outstanding staff technique, monstrous raw power, terrifying Fire Release talent, and battlefield instincts that don't play by the rules. You're a once-in-a-generation combat genius!"
He stopped in the middle of the ruined field and looked straight at Shinichi.
"Higashino Shinichi, right? You're what… twelve years old?"
A strange ripple went through the crowd. Many people who knew the truth smirked.
Isshin didn't wait for an answer. His voice rose, clear and solemn.
"At your age, with this level of strength and wisdom… I've never seen anything like it. You're a monster in the making."
He took a deep breath, expression turning deadly serious.
"Higashino Shinichi… I, Ashina Style Isshin, wish to call you the strongest!"
The words hit like a thunderclap.
The entire arena fell dead silent.
A foreign samurai—one who had just crushed two Konoha jonin and fought a chunin to a standstill—had just publicly declared a ten-year-old Leaf ninja "the strongest."
The weight of that statement was crushing.
Shinichi stood there, calm as still water. He caught his breath and asked simply, "You want to keep going, Isshin?"
Isshin laughed, loud and free.
"Of course I do! But not today."
He looked at Shinichi like he was staring at the sunrise.
"Your potential is endless. You're still just getting started. And my own sword path still has mountains left to climb. This fight was incredible, but it's not the finale we both deserve."
He raised his halberd and pointed it skyward.
"When I become the strongest samurai in the Land of Iron… and when you become the strongest shinobi in the Land of Fire… we'll settle this once and for all!"
His voice rang out across the silent stadium.
"On that day, we'll meet again—either here in Konoha or on the snowy peaks of the Land of Iron—and decide who is truly the strongest in the entire shinobi world!"
The arena stayed quiet for half a second.
Then it exploded.
"SHINICHI!!! SHINICHI!!! SHINICHI!!!"
"YOU'RE OUR PRIDE!!!"
"THE FUTURE STRONGEST IN THE WORLD!!!"
The roar of ten thousand voices crashed down like a tidal wave. People were on their feet, screaming, clapping, whistling, faces red with pure emotion.
In the stands, Kurenai was jumping up and down, gripping Shizune's hand. "He did it! He really did it!"
Shizune just smiled, eyes shining with pride.
Tsunade folded her arms, mouth twitching into a tiny smirk. "Not bad, brat. Not bad at all."
On the VIP platform, the Third Hokage took a slow drag from his pipe, eyes warm with satisfaction. Koharu and Homura exchanged glances, both of them wearing the same stunned, proud expression.
The foreign samurai had come, fought, and left.
But the name Higashino Shinichi—and the promise of a future battle to decide the strongest shinobi alive—was now burned into every heart in Konoha.
And the legend had only just begun.