The night of Soul Society was never truly dark.
It was more like diluted ink, heavy and oppressive, pressing down upon Seireitei's upturned eaves and carved rafters—then filtered through the boughs of towering Spirit Trees, breaking apart into viscous shards of shadow that trickled across the land.
The air drifted with the fine, dusty breath that followed every great battle, laced with an invisible tension. It spread silently, like the footsteps of searching Shinigami, creeping across the cold flagstones.
Within the Fifth Division captain's office, Aizen Sōsuke sat upright.
The lamp cast only a small halo of light upon the desk before him, turning the slender fingers holding his brush into jade-like carvings. Most of his body—along with those ever-gentle spectacles—remained submerged in deeper shadow.
"Uchiha… Senya…"
The name rolled silently across Aizen's tongue, its syllables cold and weighty.
A captain-level force—yet a variable entirely outside the cage of illusions he had so carefully woven.
An unexpected delight.
No… a special piece that must be drawn into the game.
"Enjoy the feast I have prepared."
The murmur barely disturbed the air.
Behind the lenses, Aizen's gaze was a bottomless abyss, and a smile of perfect control slowly bloomed upon his lips.
The core of the trap had already been cast.
All that remained was for the prey to step into the fatal spot.
The clamor caused by Kurosaki Ichigo's band of ryoka rampaging through Seireitei reached the Fifth Division only as distant static—filtered through layer after layer of walls and barriers, until nothing remained but a dull, muffled echo.
The heavy wooden door of the captain's office was firmly shut, sealing the turmoil outside.
Within lay deathly silence.
Only the wall clock's second hand moved, ticking steadily—tick, tick—each sound striking the heart.
Aizen Sōsuke sat behind the broad desk, immaculate in his white captain's haori.
An ancient tome lay open before him, its yellowed pages exhaling the faint scent of old ink.
Soft lamplight illuminated his calm, focused profile. The lenses of his glasses reflected a gentle warmth.
Everything appeared no different from any other quiet night spent on paperwork.
Then—
He heard it.
Hesitant footsteps, slowly approaching the office.
Each step landed upon the cold floorboards—and upon the very nodes of the script Aizen had laid.
It was Hinamori Momo.
Inside the heavy door, the bolt slid back with an almost inaudible click, moving a finger's breadth without being touched.
The sound was swallowed instantly by the ticking clock.
Almost at the same instant, the latch loosened.
"Captain Aizen, excuse me."
"I… I'm sorry. I'd like… to speak with you."
Hinamori gently pushed the door open.
The moment she stepped inside—
Her words died.
As if seized by an unseen hand, every sound jammed in her throat. The anxious expression on her face melted into stunned, disbelieving horror.
Her eyes locked forward.
Her body froze mid-step, breath completely arrested.
Following that petrified gaze—
At the deepest wall of the office, where lamplight and shadow intertwined—
The gentle captain she revered, the very pillar of her faith—
Was pinned like a specimen by a long sword, driven straight through his chest and into the wall behind him.
The blade's tip was buried deep in stone.
Its hilt was gripped by a man.
A rather handsome man with long black hair.
A man radiating cold, murderous intent—who, upon noticing an intruder, leapt through the window and vanished into the night.
Aizen's body was lifted by the thrust, his toes barely brushing the floor. His head lolled forward, silver-rimmed spectacles askew, lenses shattered across the dark carpet.
The white captain's haori—symbol of rank and authority—was torn open at the heart.
Blood.
So much dark crimson blood.
It oozed from the wound, crawling down the snowy fabric and along the cold wall in slow, dreadful rivulets.
A wide, shocking stain of dried red had already bloomed across the stone—a devil-flower sprung from Hell itself.
The acrid stench of blood, mingled with the scorched scent of violently dispersing spirit particles, flooded the silent room, thick enough to suffocate.
Time seemed to stop.
The clock continued to tick.
But now each sound rang like a funeral bell.
Hinamori's lips trembled violently. A broken, strangled sound escaped her throat, as though the air itself had been torn from her lungs.
All color drained from her face, leaving only deathly pallor.
Her eyes, stretched wide, lost all light—filled only with bottomless despair.
"N-no… impossible!!"
At last, she forced out a few cracked syllables, her voice scraping like sand against stone.
"Captain… Aizen…!"
Pulled by invisible strings, her feet moved.
Step by step.
No longer her own.
As if treading upon red-hot iron, she staggered forward, dragging the weight of her very soul behind her.
She reached the body.
Fingers trembling like autumn leaves reached out, brushing against Aizen's dangling hand.
Cold.
Stiff.
No trace of life.
"Aaaargh—!!!"
A scream tore from her throat, sharp enough to pierce the heavens.
The despair, agony, and shattered faith within that cry erupted outward like a physical shockwave, drowning the distant uproar of the ryoka and punching through the heavy walls of Seireitei.
In a pocket of absolute shadow not far from the Fifth Division quarters, space rippled silently.
Aizen Sōsuke stepped forth, as though separating himself from the darkness.
His white captain's haori was pristine.
His posture straight.
His spectacles unbroken.
He listened quietly as Hinamori's heart-rending wail echoed through the night.
That despair rang exquisitely clear.
A faint smile—poisonous as frost—curved his lips.
"How… exquisite a lament."
"Enough to wake the entirety of Soul Society."
His gaze pierced walls and distance, drifting toward the Fifth Division.
There, the grand performance he had orchestrated was about to unfold.
"Uchiha Senya…"
He spoke the name slowly, savoring it like a blade of peerless sharpness.
"A piece capable of disrupting the board… must naturally be used."
Tilting his head, as if savoring the overture of a magnificent tragedy—
"The hunt begins."
"Let us see just how much… splendid chaos this unexpected blade can add to my stage."
Shadows flowed like water, enveloping his tall figure and swallowing him whole.
Only cold emptiness remained.
Seireitei's night was steeped in blood and conspiracy.
And the signal calling for Uchiha Senya's capture—
Was sounded without words.
By a girl's despairing scream.