One Piece : Brotherhood

The World Tree shuddered. Its colossal trunk—older than empires, thicker than continents—groaned as if something had seized its roots from beneath the earth. Leaves the size of ships trembled violently, branches creaking as hurricane winds spiraled without direction.

Then—the dream beasts stopped. Across Elbaf, the grotesque monstrosities that had been rampaging through forests and cliffs froze mid-motion. A serpentine horror coiled around a watchtower went rigid. A titanic draugr raising its blade above a fallen giant halted like a puppet whose strings had been cut.

The sky darkened. Not with clouds. With absence. The sun vanished entirely, swallowed in an instant. Daylight did not fade—it was extinguished. Pitch blackness descended over Elbaf. Saint Killingham, who stood atop a shattered ridge harnessing his mythical zoan powers, weaving more nightmares into existence through his Devil Fruit, suddenly faltered.

His grin disappeared. An overwhelming pressure crashed down upon him. It did not descend from above. It pierced through him. One by one, the dream beasts he had conjured began to disintegrate. Not in fire. Not in smoke. They simply unraveled—like fragile illusions crushed by a divine hand. Killingham staggered, coughing as his connection to his own power flickered violently.

"What... is this—?!"

It wasn’t just him. Every God’s Knight on Elbaf felt it. Sommers’ laughter died in his throat mid-swing. The blade he had been merrily using to carve through giant warriors trembled in his grasp. Maffey’s confident smile faltered as her Devil Fruit ability—so fluid moments ago—stuttered, suppressed as if shackled.

Then came the surge. Haoshoku. Not the domineering wave of a conqueror. Not the measured pressure of a seasoned king. This was something else, something primal. It was a blade forged from will itself. It pierced through spirits like divine judgment. Giants across the battlefield throughout Elbaf collapsed.

First the younger warriors—eyes rolling back as they fell like felled trees. Then seasoned veterans. Even those who had fought in a hundred wars, who had withstood the fury of emperors and sea kings, felt their knees buckle. Their weapons slipped from numb fingers as their consciousness was ripped away.

One after another—they fell. The God’s Knights had it worse. Because the true surge was aimed at them. Sommers’ face drained of color, his earlier merriment replaced by naked terror. The overwhelming Haki pressed against his mind like a crushing abyss, suffocating his thoughts. His Devil Fruit ability vanished entirely, snuffed out like a candle in a hurricane.

Maffey staggered backward, clutching her head as blood trickled from her nose. "No... this isn’t possible..."

Even the abyssal connection within the throne room—the Depths Covenant that had empowered the God’s Knights—flickered violently. And then—it snapped. The black runes dimmed. The air trembled. A scream tore through the darkness. Raw. Agonized. Filled with grief so profound it shook the foundations of the island.

"DORAAAAA...!!"

Elbaf itself seemed to quake beneath the sound. That scream was mine. Miles from the shore, I streaked towards Elbaf like a bolt of lightning through the air; the last fragments of Dora’s Vivre Card had turned to ash between my fingers. I did not need confirmation. I did not need witnesses.

I knew. I knew the instant her flame vanished. Rage consumed me whole. The restraint I had clung to while rushing toward Elbaf in all haste—the promise to remain measured, to remain rational—shattered like glass. The sea around my vessel churned violently as my Haoshoku exploded outward.

It did not ripple. It detonated. The skies above Elbaf was plunged into darkness by my will alone. I could feel him. Even across miles of storm and stone. The blood-stained blade in King Harald’s hand. The echo of Dora’s final breath lingering upon it. And I knew.

Within the throne room, everyone felt the fury that consumed the world; even Shanks felt it. His knees bent under the crushing weight—not in submission, but because the force was simply that overwhelming. His Haki flared instinctively in defense, but it was like bracing against a tidal wave.

Scopper Gaban reacted first.

"Kid... we need to move. Now!" With one arm, he grabbed Shanks. With the other, he seized Elder Jarul; the God’s Knights were in no position to intercept them. Gaban had stood beside the Pirate King. He had faced monsters whose names shaped history. He had felt the Haki of titans and never flinched. But this— This was different.

"This isn’t normal," Gaban growled, teeth gritted as he forced himself upright against the suffocating pressure. "He can’t see friend from foe right now. We need to leave—NOW!"

His voice carried urgency rarely heard from him.

"Elder Jarul, evacuate your people! I can’t guarantee Elbaf will still be standing after today!" If anyone else had spoken those words, Jarul would have laughed. Elbaf falling? Absurd. The Land of Gods had never bowed. Not to emperors. Not to armies. Not to the sea itself.

But under this monstrous Haki—even Jarul hesitated. Because all that hatred... all that grief... all that annihilating intent— Was focused on a single figure. The King of Giants, Harald. Harald was the only one still standing fully upright. Barely.

His legs trembled as veins bulged across his forehead. The Depths Covenant within him writhed, trying to anchor him against the overwhelming force pressing down upon his soul. He looked toward the horizon.

Toward me. And for the first time since embracing his so-called divinity, caution touched his eyes. My aura rolled across Elbaf like the wrath of a vengeful god.

Harald roared. The pressure crushing the throne room bent pillars and split marble, but the former king of Elbaf refused to kneel. With a guttural shout, his own Haoshoku erupted outward. Black lightning detonated from his body in violent arcs, colliding against the overwhelming will pressing down upon the world. The impact cracked the air itself. The floor beneath his feet cratered as two conquerors’ auras clashed like colliding tectonic plates.

He could not overpower it. But he forced it back—just enough. The suffocating weight on the God’s Knights lessened as his Haki lashed outward in defiance. Maffey coughed violently, dragging herself upright. Gunko stumbled back to her feet as well, one hand braced against a fractured pillar.

For the first time, Gunko hesitated. Her mismatched eyes, once steady and unreadable, flicked toward the distant horizon. Something was coming. Something impossibly fast. Before her Observation Haki could fully lock on, the sky split.

A lance of black lightning tore through the heavens, not descending but advancing—ripping across the darkness like a spear hurled by a wrathful god. Harald’s instincts screamed.

He planted his feet and drew his blade back, every ounce of his strength gathering into a single strike. Conqueror’s Haki flooded the weapon until it howled with power, black arcs spiraling violently around its edge.

"IKKOKU SOVEREIGNTY...!!"

He swung. The slash that erupted from his blade was titanic. A beam of compressed force and Haki the size of a mountain ridge tore through the throne room wall and blasted outward toward the incoming lightning. The attack warped the air, splitting clouds for miles and carving a trench through the sea itself. Had it landed upon an island chain, it would have erased it from the map.

The two forces collided. For the briefest instant, the world froze. Then—my entire body was wreathed in black lightning. Akatsuki in one hand. Shusui in the other. Soru and Geppo detonated beneath my feet in tandem, propelling me forward with explosive force. The sea below split apart like a canyon carved by divine judgment, walls of water rising sky-high as I crossed the final dozen miles in a blink.

"REAPER’S EDGE." I did not shout it. I did not need to. The words carried across Elbaf like a funeral bell. My blades crossed. The strike fell. There was no explosion. No prolonged clash. Harald’s massive attack—an island-destroying force infused with Conqueror’s Haki—was severed cleanly down the center.

It did not resist. It parted. Like silk before a scythe. The shockwave that followed split the heavens. Clouds evaporated. The sea walls collapsed outward in a cataclysmic spray. The remnants of Harald’s attack dissolved into nothingness as my trajectory never faltered.

In one instant, I was miles away. In the next— I was upon him. Blade aimed for his neck. To end it in a single stroke. Harald’s eyes widened. He had not anticipated his strongest strike being erased so effortlessly. His body was still mid-motion from the follow-through, his stance open.

Defenseless. Gunko moved without thinking. Her Devil Fruit power erupted outward—the Aro Aro no Mi bending trajectories, rewriting the path of anything within its domain. Invisible rule-bound arrows shot toward my blades, aiming to divert them from their course. The moment her ability brushed against me, it vanished.

Not deflected. Not overpowered. Devoured. The arrows disintegrated from reality itself, erased as though they had never existed. Gunko’s pupils constricted. Then— Something else descended.

A foreign will. Ancient. Cold. Overwhelming. Her body stiffened mid-step as a presence far greater than hers flooded into her being.

Her aura shifted instantly. Heavier. Deeper. The very air recoiled. A second surge of her power manifested—this time magnitudes stronger, imbued with a presence I recognized. Not Gunko.

The arrows reappeared—not as constructs, but as law itself bending. This time they did not aim at me. They aimed at Harald.

The invisible force yanked him sideways at the last possible instant. My blade carved through empty space—almost. Shusui bit into Harald’s nape regardless. Armament Haki meant nothing.

It parted like paper. Blood erupted in a crimson arc, giant blood splattering across the shattered throne room as Harald was torn from his stance and hurled aside by the altered trajectory.

He crashed through stone, tumbling violently across the dais. I hovered midair. Black lightning crackled around me like a living storm. I had adjusted in the final fraction of a second—Observation Haki’s future sight guiding the slight shift in my swing—but the interference had been precise. Intentional.

My bloodshot eyes lifted. Gunko no longer stood as herself. Her mismatched eyes were gone. In their place were twin, abyssal irises—dark, ancient, and depthless. The whites of her eyes seemed swallowed by shadowless ripple patterns. Veins of black crept faintly along her temples, not as corruption but as sovereignty. Her posture was no longer hesitant.

It was regal. Detached. The air around her shimmered subtly, bending in deference. A vessel.

Not merely empowered. Occupied. The presence radiating from her eclipsed even the strongest of the God’s Knights. I had felt it once before. In the very depths of the sea when I had faced the previous Poseidon. When I finally touched upon the threshold of divinity.

Imu. Gunko’s lips parted slightly, but when she spoke—the voice was not hers. It was calm.

Ancient. And utterly devoid of emotion. The Great One had descended. And for the first time since arriving, my rage found something worthy of it.

"Thou hast arrived precisely as Mu foresaw, young Rosinante..." Her wings unfurled with a violent snap. Leathery. Vast. Monstrous.

They beat once and she rose into the air opposite me, hovering amidst drifting embers and shattered stone. A devil’s tail swayed behind her, barbed tip curling idly as though this were nothing more than theater. In her hand rested a blackened trident, its edges humming with something ancient... something wrong.

Aurust Castle was no more. The throne room had become a grave of marble and fire. Pillars lay broken. The ceiling was gone. The sky above churned in spirals of black lightning born from my rage.

"Nerona Imu." My voice was not loud. It did not need to be. It carried through the ruins like a blade drawn slowly from its sheath. Behind me, through Observation alone, I felt Harald dragging himself from the rubble. Stone crumbled from his massive frame as he forced himself upright.

But the wound on his nape—it was still bleeding.

Thick streams of giant blood poured down his back. Until now, every strike he had taken had healed instantly. Even Gaban’s strongest attack had closed as if it were nothing more than a scratch. That cursed immortality had made him untouchable. But not this. The flesh refused to close.

My Haoshoku still clung to the wound, devouring the regeneration from within. Even that false eternity bent before my will. Good. High above, Gunko tilted her head. No. Not Gunko.

Her mismatched eyes were gone. In their place were twin obsidian irises—depthless, ancient, sovereign. The air around her bent subtly, as if the world itself recognized its ruler.

"Elbaf... is Mine." Her voice was layered. Echoing. Not human. "Thou meddleth in designs beyond thy station. This realm, this king, these giants—they are but pieces upon Mu’s board."

I felt it then. Not just arrogance. Ownership. Imu did not conquer. Imu possessed. The world was not something to rule. It was something that belonged to them by default.

"Depart," they continued, wings spreading wider, shadow swallowing the ruins beneath. "Take thy grief and thy tempest hence. Trouble not the will of Heaven."

Heaven. My grip tightened around Akatsuki and Shusui. Black lightning crawled along my arms like living veins. Below us, Harald staggered, blood still spilling. Even with that borrowed immortality, even with the abyss reinforcing him, my strike had marked him.

Imu felt it too. I saw it in the faint narrowing of those ancient eyes. They would never admit it—but granting Harald that power had cost them. I could sense the strain lingering in the air, subtle fractures in something vast and hidden. My earlier surge had done more than rattle giants. It had shaken the abyss itself. For the first time since the Void Century—they were cautious.

"Rosinante... son of a traitor’s line," Imu said, almost amused. "Mu granteth thee mercy. Spurn it not."

Mercy. The word felt obscene. Dora’s face flashed in my mind. Her childish laughter. Her stubborn courage. She might have been a giantess with ancient blood, but to me she was just an innocent child who didn’t even get to grow up. The moment her vivre card turned to ash between my fingers.

The ocean behind me was still split in two, towering walls of water suspended by the lingering force of my arrival. The skies had not recovered. Elbaf itself groaned beneath the weight of my Haki.

"You speak," I said quietly, "as though the world was something you crafted with your own hands for your amusement." My eyes met theirs. "And yet you hide behind vessels."

Black lightning cracked violently between us.

"You granted him immortality," I continued, glancing briefly at Harald as he tried—and failed—to stop the bleeding. "You propped him up like a weapon because you feared losing control of this world."

The air grew heavier. "I felt it," I said. "When my Haki snuffed out your abyss for a moment." For the first time, the wind around Imu’s wings faltered. "You call this land yours." I raised Shusui slightly, its edge still stained with giant blood. "You call its king yours."

Akatsuki hummed in my other hand, thirsting. "But Dora was mine." The words came out steadily. Not shouted. Not broken. Just absolute.

"You took something from me," I said, and the sea walls behind me trembled violently. "So now I will take everything from you..." Imu’s trident lowered a fraction.

"Choose wisely, young storm," they intoned, their voice deepening like a cathedral bell. "For should Mu be moved to wrath, even gods may be unmade."

I exhaled slowly. My grief had already burned away hesitation. Wrath? They thought this was wrath? Black lightning exploded outward again, thicker than before, splitting the sky in branching fractures that illuminated the entirety of Elbaf.

"Fuck you... and your world, Imu." I grinned. Not with mockery. Not with madness. But with conviction so violent it burned. If they wished to speak of ownership—of dominion—of Heaven’s decree, then I would teach them loss.

Gunko’s—Imu’s—eyes narrowed. For eight centuries, no one had dared address them so profanely. No human. No devil. No so-called gods. Veins rose along Gunko’s temple as the ancient will within her flared in silent fury. The air tightened, reality itself seeming to recoil at the insult. They turned slightly toward Harald, perhaps to issue a command—but Maffey moved first.

"You filthy swine—how dare you...!"

Her voice was shrill with outrage, trembling with blind devotion. The very idea that someone would speak to the Great One in such a manner shattered whatever restraint she had left. She stepped forward. That was her mistake. Lightning flashed. Not from the sky. From me.

There was no drawn-out motion. No telegraphed strike. No roar of effort. One moment I stood midair, black lightning writhing around my frame—the next— I wasn’t there. Imu’s eyes widened a fraction. They had been assessing the current situation.

Calculating. Expecting caution. Expecting hesitation. They had assumed grief would make me reckless toward Harald. They had not anticipated precision. Soru. Geppo. Conqueror’s haki infusion. All in perfect tandem within a split second.

The air imploded where I had stood, marble beneath cracking from the shockwave alone. A streak of black tore across the throne room—so fast that even the future sight of Imu’s Observation Haki had failed to keep up.

As for Saint Maffey, she saw nothing. She did not even get to finish her sentence. Shusui passed through her neck with a whisper. Not a clash. Not resistance. A whisper. The blade was so saturated in Haoshoku that space itself seemed to split before it. Her Armament never rose. Her instincts never triggered.

For a single, frozen heartbeat—she remained standing. Eyes wide. Mouth slightly open. Her body upright, posture unchanged. Then—her head slid cleanly from her shoulders. There was no explosion of blood at first. Just silence.

The severed head turned slightly as it fell, an almost puzzled expression still frozen upon her face—as if her mind had yet to comprehend what had occurred. Immortality. She had been granted it. A gift from the Great One. A promise of eternity.

Her consciousness lingered for the briefest flicker of a second after separation—long enough to realize something was wrong. Long enough to feel the absence. Then the Haoshoku embedded within the cut ignited. The wound did not attempt to regenerate. It did not even try. The overwhelming will infused into the strike devoured the blessing at its root. Whatever tether bound her life to Imu’s power was severed in that same stroke.

Her body collapsed a moment later. Her head struck the fractured marble with a dull, almost mundane sound. Only then did blood erupt. A violent crimson spray across shattered stone. Across Harald. Across the ruined throne. Across the shadow beneath Imu’s wings. I stood behind where she had been, blades extended, black lightning snapping outward in jagged arcs that carved thin lines into the walls.

Slowly, I straightened. The aftershock hit a breath later. The throne room split further, cracks racing like spiderwebs through pillars and floor alike, a blade slashed severing what remained of the castle clean through. The shockwave blasted outward through the broken castle, flattening what remained of its outer walls.

The wind howled. Debris lifted. Silence followed. Saint Maffey—immortal knight of the so-called god—lay in two pieces at my feet. Dead before she ever knew she had been struck. Shanks, who had witnessed all this using his observation haki, breathed raggedly. Even through his pain, even through his own bleeding wounds, his senses locked onto the corpse in disbelief. The God’s Knight he had been fighting for so long had been killed with one single strike with no resistance whatsoever; he could not even see the gap between himself and me clearly anymore.

Imu did not speak. For the first time since descending into this vessel, they simply stared. Because what had just happened was not merely defiance. It was proof. Immortality could be cut. Their blessings could be undone. And I had done it casually. Deliberately. Without even granting them the courtesy of being my target.

I flicked the blood from Shusui with a sharp motion. Black lightning surged again, thicker and heavier, drowning the throne room in oppressive force. My voice was quiet. Cold.

"You wanted me to choose wisely." My eyes lifted to meet Imu’s ancient gaze. "I just did."

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