World Ender.

  This was the true name of the form Haruki Aizawa had assumed—the ultimate manifestation of the Darkin Bde. It was the birth of destruction and the end of all things. As his boots touched the shattered earth, he had ceased to be a mere swordsman. He had become the Ender of Worlds.

  The moment the ultimate art—World Ender—was unleashed, Haruki felt himself plunging into a violent ocean of consciousness. A manic, ancient will tried to shove him aside, seeking to drag him into a bottomless abyss of hatred and madness. The Darkin wanted a vessel; it wanted a demon to walk the earth once more.

  But Haruki had opened this door because he had the confidence to hold it.

  Though the initial surge of power nearly swallowed his identity, threatening to turn him into a world-killing puppet, his iron resolve fred. He fought back against the tides of corruption, wrestling the demonic physiology under his command.

  "This power..."

  It was only now, fully synchronized with the bde, that Haruki understood the true horror of the Darkin. In this state, his perception shifted to a higher dimension. The world became hyper-lucid. He could see the structural integrity of the atmosphere, the flow of the Gastrea virus in the soil, and the life-force of every creature for miles.

  He saw the beginning of life and the end of death simultaneously. This wasn't just swordsmanship anymore; it was the vantage point of a god.

  However, there was a secondary effect to entering a higher state of being. To lower life forms, Haruki had become an existential nightmare.

  Though his physical form was still vaguely recognizable, the "vibration" he emitted was so overwhelming that to a normal human eye, he appeared as a looming shadow of death—a reaper’s scythe blocking out the sun. Every living thing that looked at him saw their own deepest, most primal fear reflected in his silhouette.

  Even the Gastrea weren't immune.

  The monsters, usually driven by nothing but hunger and basic instincts, felt the crushing weight of a predator that defied their biology. The legion under Aldebaran’s command began to shiver. The forward charge into Tokyo didn't just stall; it shattered. Thousands of Gastrea turned and fled in a blind, mindless panic.

  Aldebaran was the only one left standing. The Stage IV monster, at the peak of its power, screeched in a tone that sounded suspiciously like a whimper. Its tentacles shed out, not in attack, but in a desperate, trembling defensive posture.

  Even the mountain-sized monster knew: death had arrived.

  "Let’s end this," Haruki said, his voice a resonant, multi-yered growl that vibrated the very air.

  He hovered in the air, his tattered wings beating slowly. He raised the crimson Greatsword.

  "THE DARKIN BLADE!"

  He delivered a massive, vertical overhead strike. It looked simple, but the kinetic discharge was enough to cleave the ndscape for a mile.

  KABOOM!

  The strike sheared through Aldebaran’s head and drove deep into the earth. Haruki followed up instantly with a second horizontal sweep across the monster’s midsection.

  A hurricane of dark energy erupted from the point of impact. The shockwave pulverized the ground into fine dust and tore the clouds asunder.

  Aldebaran screeched in agony. Its "immortality" was failing. Its cells were trying to knit back together, but Haruki’s Darkin energy was acting like a viral cancer, consuming the Gastrea virus faster than it could replicate.

  Sensing its end, Aldebaran unleashed a final, desperate roar. It summoned every ounce of its bio-energy to form a Light Spear, hoping to bst the demon out of the sky so it could flee.

  VROOOOM!

  The white beam erupted, but Haruki didn't even move to dodge. He reached out his left hand.

  "INFERNAL CHAINS!"

  Spikes of dark, glowing iron burst from the ground around Aldebaran, tethering its massive limbs and pulling it into a central impact zone. The Light Spear went wide, slicing harmlessly into the sky as the monster was jerked off bance.

  Haruki blurred forward.

  "UMBRAL DASH!"

  He became a red streak, a meteor of blood and steel that smmed into Aldebaran’s side, flipping the multi-ton behemoth onto its back.

  The monster filed, its eight pilr-like legs kicking at the empty air. It was a pathetic sight—the "Invincible Stage IV" reduced to a beetle on its shell.

  "The final blow," Haruki decred.

  "DEATHBRINGER STANCE!"

  He thrust the Greatsword high, then brought it down with the weight of a falling star.

  CRA-CRA-CRA-OOOM!

  The crimson energy swallowed Aldebaran whole. The monster’s armor, which had shrugged off tank shells and Varanium missiles, was sliced apart like wet paper.

  More importantly, the regeneration stopped. The dark energy of the Darkin Bde severed the monster’s connection to its own life force. Its blood didn't spray; it was absorbed into Haruki’s sword, fueling the demon’s glow.

  "G-GAAARRRGH...!"

  With one st, rattling breath, Aldebaran colpsed.

  The ground beneath it shattered into a web of deep fissures as the monster’s massive body began to dissolve into bck ash.

  Standing in the center of the crimson rain, Haruki Aizawa stood tall—a winged silhouette of absolute power, illuminated by the fires of the war he had ended.

  The death of Aldebaran brought a sudden, hollow peace to Tokyo. The Monoliths were still broken, but the "Lid of Despair" had been lifted.

  Haruki returned to the Outer Districts immediately, carrying Kayo and Tina in his arms. As they reached the slums, the System interface flickered in his vision, a digital timer counting down the final hours of his stay in this world.

  He wasn't surprised. He had achieved the mission. But as he looked at the girls, a pang of regret hit him. He had fixed the immediate threat, but the social rot of Tokyo was a different kind of monster.

  He gathered all the children of the Outer Districts—the Red-Eyes, the outcasts—and stood before them one st time.

  "Are you really leaving?" Kayo asked, her voice small. Her usual stoicism was gone, repced by a deep, childlike fear of abandonment.

  Tina stood beside her, her grip on Haruki’s sleeve so tight her knuckles were white. "Haruki-san... what will we do without you?"

  The hundreds of girls looked up at him. For the first time in their lives, they had a protector who didn't view them as weapons or mistakes. To them, Haruki Aizawa was the only thing that made sense in a broken world.

  Haruki looked at their expectant faces and sighed. "The answer to 'what to do' is something you have to find for yourselves. No one can choose your path for you. If I stay and hold your hand, you'll never learn to walk on your own."

  "..."

  "The ws have changed. The Seitenshi will protect you. But ws are just words on paper. True safety comes from your own strength. I’ve taught you how to fight, and I’ve given you the tools to survive. Use them. Don't be victims. Be the masters of your own fate. Only then will you have a future that actually belongs to you."

  His words were blunt, but they resonated with the girls. They had lived lives of extreme hardship; they understood the reality of his message better than any adult could. They nodded, their eyes filling with a new, quiet resolve.

  After saying his goodbyes to the girls, Haruki made one st trip to the First District to meet the Seitenshi.

  The pace was a hive of activity. The death of Kikunojo Tendo had caused a political earthquake, and the Seitenshi was currently working eighteen-hour days to fill the power vacuum and consolidate her rule.

  Despite the chaos, she cleared her schedule the moment she heard Haruki had arrived.

  "You're going," she said, looking at him. She didn't ask; she knew.

  "You don't seem surprised," Haruki noted.

  "I’ve known since the day you 'came back to life' after the Scorpio incident," she said with a faint smile. "You never fit this world, Haruki-san. Even the kindest people in Tokyo carry the trauma of the war—they look at Cursed Children and see the monsters that killed their parents. But you... you look at them and just see children. It’s as if the Gastrea War never happened in your head."

  "Maybe it didn't," Haruki replied cryptically.

  "I suspected you were an outworlder. Or a ghost," she ughed softly, though there was a hint of sadness in her eyes. "Regardless, I owe you everything. Tokyo owes you its existence."

  "I don't care about Tokyo," Haruki reminded her. "Just remember our deal. Take care of the Outer Districts. If I ever find a way back here and I see them suffering again..."

  "I know," she interrupted, her expression hardening into that of a true ruler. "I will protect them. Not just because of our deal, but because it’s the only way to ensure this city survives its own hatred. I won't fail them again."

  "Good."

  Haruki turned to leave.

  "Haruki-san!" she called out, her voice momentarily losing its royal composure. "Will you... will you ever come back?"

  Haruki paused at the door, the silver light of the system beginning to shimmer around his edges.

  "Maybe. Maybe not," he said. "The world is a big pce. But the sword always finds its way back to where it’s needed."

  With those final words, Haruki Aizawa vanished into a pilr of light, leaving the world of Bck Bullet behind.

  [Mission Complete]

  [Reward: High-Purity Varanium Greatsword "Onikiri-Rei" (Bound to System Inventory)]

  [Returning to Main World...]

  ***********************************************

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