Kai exhaled slowly as he hovered in the fractured sky. The time for learning had passed. His eyes sharpened beneath the half-cracked Oni mask, golden wings spreading wide as compressed air spiraled violently around him.
He raised his hand, and Rasenshuriken began forming one after another—vast spiraling discs of pure wind, rotating with a shriek that split the clouds. The pressure alone bent the air, distorting the horizon like heat over a furnace.
From within the storm clouds above, a sound echoed.
It began as a faint vibration—then grew into the deafening cry of a thousand birds chirping in unison. Lightning surged through the heavens, coiling together until it formed the shape of a massive dragon, its body stretching for thousands of meters, absorbing every bolt in its path.
Shiki's eyes narrowed as thunder illuminated his blood-streaked face. "So this is your final act, brat?"
Kai's lips curved upward. "No."
Lightning birds burst from the clouds, hundreds of them, diving toward Shiki in blinding flashes. Behind them came wolves sculpted from thunder, a roaring tiger of pure plasma, serpents writhing in crackling arcs, and a blazing lightning cat darting between currents.
"I'm not letting you leave alive today."
---
Shiki roared, unleashing colossal sword slashes that tore apart the first wave of lightning beasts. Golden arcs split the sky, cutting birds in half and dispersing wolves into sparks.
"Jihahahahaha! You think parlor tricks can kill the Golden Lion?!"
He dodged two Rasenshuriken by a hair's breadth, but the third grazed him. The micro-wind blades shredded through his coat and carved into his flesh, drawing a furious snarl from his lips.
More lightning creatures struck. A wolf clamped onto his shoulder in a flash of paralysis. A serpent coiled around his remaining arm, crackling violently.
Shiki's body stiffened momentarily.
And that moment was enough.
A Rasenshuriken detonated beside his right side.
The explosion tore through flesh and bone in a spiraling storm of molecular blades. When the wind dispersed, Shiki's right arm was gone.
Blood sprayed across the sky.
Shiki roared in rage, the sound shaking the sea below. "YOU DAMNED BRAT!"
---
Kai vanished in a burst of lightning and reappeared before him. His sword crackled with a sound unmistakable—the shriek of a thousand birds condensed into a single blade.
"Chidori."
Lightning coated Akatsuki completely, infused with Armament and Conqueror's Haki. The air vibrated violently as Kai drove the blade forward.
Shiki blocked with his remaining sword-leg, sparks exploding between them.
"You think I'll fall so easily?!" Shiki spat, blood trailing down his chin.
Kai's voice was calm but cold. "Fall?"
He pushed harder.
"I'm ending you."
---
Then Shiki did something unexpected.
With a snarl, he reached up and pulled the rudder embedded in his skull free. Blood poured down his face as the metal tore loose.
For a heartbeat, the world went silent.
Then his suppressed Haki erupted.
It wasn't just Conqueror's—it was the roar of a dying lion refusing to kneel. The sky trembled as golden waves of Haki burst outward, forcing Kai backward violently.
Kai slid across the air, stabilizing himself mid-flight as Shiki's presence swelled monstrously.
"THIS," Shiki growled, eyes blazing, "is my true power!"
The sea below churned in terror as floating debris spiraled around him. His Haki cracked the clouds apart, splitting them like fragile glass.
Kai laughed.
"This is what I wanted."
---
They charged simultaneously.
Shiki's Haki-infused slash descended like a guillotine, forcing Kai to block with both hands on his blade. The impact blasted shockwaves for miles, scattering thunderheads in every direction.
Kai was pushed back violently, golden wings straining.
Shiki pressed forward relentlessly, his strikes heavier now, every blow coated in overwhelming Conqueror's force.
"You wanted the real me?!" Shiki roared. "Then survive it!"
Kai grinned through the pressure. "That's the plan."
---
Each strike Shiki delivered forced Kai to refine his own Haki instantly. His defense hardened. His Conqueror's flared brighter.
Where he had been overwhelmed before, he now endured.
Their swords collided again and again—vertical slash, horizontal counter, spinning upward arc, downward cleave. Sparks rained like meteors while lightning flashed around them uncontrollably.
Shiki drove a crushing blow that split the sky itself. Kai twisted and retaliated with a slicing thrust that grazed Shiki's side.
Blood spilled again.
"You're growing mid-fight," Shiki muttered, disbelief mixing with fury.
Kai's voice was steady. "That's why you'll lose."
---
Below the battlefield, a Marine ship broke through the turbulent sea.
Garp stood frozen at the prow as he witnessed the sight above. A lightning dragon thousands of meters long descended from the heavens, illuminating the ocean in white-blue brilliance.
And below it—
The Oni Samurai, mask half-cracked, launching Kamusari upward from beneath Shiki.
Garp's eyes widened slightly. He did not move.
"Heh… so this is the end of you, Shiki," he muttered.
---
Farther away, Whitebeard watched silently from the Moby Dick. The wind carried the tremors of the final clash even to him.
He sighed deeply. "Another from the old era… gone."
Marco remained silent beside him.
---
Back in the sky, Shiki understood.
This was the end.
He laughed—a wild, fearless laugh. "Jihahahahaha! If I fall, I fall as a lion!"
His Conqueror's Haki roared one final time, clashing against Kai's own like two kings refusing to bow.
Kai poured everything into his blade—every ounce of Haki, every spark of lightning, every fragment of wind and fire.
"KAMUSARI!"
The slash rose from below, splitting the air itself.
At the same moment, the lightning dragon descended from above, roaring with a thousand thunderclaps.
Shiki met both attacks head-on.
Golden Haki erupted around him in defiance.
For a fraction of a second, the sky froze—three forces colliding in the center of the heavens.
Then came the explosion.
Blinding white consumed everything within thousands of meters. The sea flattened under the pressure before erupting upward in towering walls. Ships rocked violently as the shockwave tore across the ocean.
No sound could be heard for several seconds—only light.
Pure, absolute light.
When it faded, the clouds had been erased.
And only one presence remained standing in the sky.