"You… you're really something else."
The black cat Yoruichi stared at Nanaya in silence.
Before arriving in Seireitei, she had been worried sick about his safety. She even made multiple contingency plans to rescue him if things went south.
Now, it was clear—Nanaya wasn't the one in danger.
It was Seireitei that had suffered instead.
Ordinary Shinigami feared Nanaya more than a Menos Grande.
"Tsk… cough cough…"
Nanaya coughed lightly, then with a few swift flash steps, he reappeared holding several of the fleeing Shinigami from before.
"Nanaya—Nanaya-sama, please don't kill us!"
The 12th Division Shinigami dropped to their knees, sobbing and groveling.
They had no backbone left—after all, even captain-level Shinigami had fallen to him. What hope did they have?
"Why run?" Nanaya asked, frowning. "I just have a few questions."
"W-what do you want to know…?" one of them asked, trembling.
"What happened while I was gone?"
They exchanged hesitant glances before one finally spoke:
"After you disappeared, Captain Unohana Retsu and the Captain-Commander had a disagreement..."
"Captain Unohana insisted on keeping you alive to 'train' you, but the Captain-Commander wanted you executed immediately..."
"They ended up fighting each other."
Nanaya's eye twitched. He could easily imagine how that argument went down—especially with Unohana's twisted love for battle.
"Anything else?"
"Yes... another incident. A human named Kurosaki Ichigo invaded and defeated the captain of the 9th Division—Tousen Kaname."
Nanaya couldn't help but shake his head and sigh.
"Tousen really is unlucky. And kind of stupid.""Didn't he realize Ichimaru Gin didn't even bother to show up?"
Tousen had been broken by Nanaya, his Bankai shattered—And now he was defeated again by Kurosaki Ichigo.
Still, it was a relief that everyone important to Nanaya seemed to be safe.
He knocked the Shinigami unconscious and turned to the building in the distance.
"Let's go—Technology Development Bureau."
Technology Development Bureau
A massive, pure-white structure stood ahead.
According to Yoruichi, the building was surrounded by a complex barrier—an alarm would trigger the moment anyone approached. Dozens of patrol squads guarded the perimeter.
Not just to keep people out, but also to keep their "experiments" from escaping.
"Tch. What a filthy place..." Nanaya muttered. "But I guess it fits. Seireitei isn't exactly made of saints. They're all the same."
Despite being portrayed positively in official history, Seireitei was still a rigid, feudal system.
There was no real good or evil—just power maintaining control.
"Nanaya, what are you mumbling about?"
Yoruichi glanced at him, puzzled.
"Nothing."
Nanaya gave her a calm smile. Using his Rinnegan, he analyzed the barrier in front of them. Then, ignoring the security protocols entirely, he stepped forward.
His body passed through the defenses without triggering a single alarm.
Just like that, he was inside.
They walked down a long, sterile, white corridor.
Suddenly, a white-coated Shinigami with a clipboard came around the corner. He saw Nanaya—and his eyes widened in panic.
"INTRU—"
Before he could finish the word, Nanaya's gaze met his.
The Shinigami's expression instantly went blank.
His pupils dilated. His body relaxed.
"Where are the artificial bodies stored?" Nanaya asked calmly.
"Straight ahead... there's a lab with all the current prototypes," the scientist replied in a dazed voice, like a sleepwalker.
He followed Nanaya obediently, mind completely under control.
Yoruichi, still perched on Nanaya's shoulder, couldn't help but let out a soft sigh.
"Nanaya… your power is terrifying. You just waltzed into the most guarded place in Seireitei like it was nothing."
With his Hollow abilities, Hypnosis, and now the Rinnegan—Yoruichi realized Nanaya could invade any division, maybe even the Central 46, without resistance.
"Don't worry," Nanaya replied gently, "I won't use this power for anything bad."
They entered the Artificial Body Storage Room.
Bright lights illuminated rows of white, coffin-like containers—each holding a synthetic body inside.
Up close, Nanaya could recognize several familiar faces among the artificial bodies:
Zaraki Kenpachi. Byakuya Kuchiki. Hirako Shinji. Komamura Sajin. Tousen Kaname…
Each one encased in a cold, sterile coffin.
Yoruichi, still in her black cat form, narrowed her eyes.
"That madman's researching captain-level artificial bodies. That's… completely against Soul Society regulations."
Nanaya sneered, strolling among the coffins like he was browsing a gallery.
"Rules?" he muttered. "Rules are just chains for the weak."
His gaze passed over the others… then landed on Byakuya Kuchiki's artificial body.
"Found you."
Yoruichi blinked. "You're using Xiaobai's body? That'll drive him insane if he finds out."
Then she turned toward him suspiciously."You still haven't told me what you're planning with this thing."
Nanaya's lips curled into a smirk.
"You'll see."
The purple ripples of the Rinnegan flared in his eyes as his spiritual pressure surged. From the void formed a pure-black chakra rod, pulsing with dark energy.
"Intruder alert!"
"Artificial Body Storage Room—subject is Takaya Kuchiki!"
In the monitoring department of the Technology Development Bureau, the Shinigami were in disarray. One of them stared at the surveillance feed and paled.
"W-What is that guy doing with the black rod!?"
"He... he just stabbed it into Captain Kuchiki's artificial body!"
"Wait—it's moving!"
Back in the storage room, Yoruichi's fur bristled in disbelief.Her golden eyes flared wide.
"Nanaya… what the hell did you just do?!"
The body in the coffin—completely lifeless just moments before—sat up.
A wave of dense, captain-level Reiatsu erupted from it.
Nanaya answered casually, arms folded, admiring his handiwork.
"This is just one of my techniques. I can create puppets."
He glanced at the animated body with a satisfied grin.
"Using a living body is the last resort… but I don't have the corpses of strong warriors on hand, so this will do for now."
With the power of the Rinnegan, Nanaya could control corpses and make use of their abilities from when they were alive.
But since no corpses were available, these dormant bodies would be substitutes—for now.
He moved swiftly, repeating the process again and again.
Soon, six artificial Byakuya Kuchiki stood in the room.
Expressionless. Silent. Purple Rinnegan in their eyes. Black rods piercing through their forms.
Yoruichi leapt to Nanaya's shoulder, a bead of cold sweat trailing down her cheek.
"You're seriously turning this into a battlefield, huh?"
Outside the bureau, Mayuri Kurotsuchi licked his lips with twisted excitement.
"Heh… so that freak is coming to us?"His eyes glimmered behind the face paint. "Interesting. I want those eyes—desperately."
He turned to his subordinates with that same demented smile.
"Get ready. If that man escapes, you all become my next batch of experiments."
The nearby Shinigami flinched, paling with terror. Everyone in the 12th Division knew what it meant to be part of Mayuri's "experiments."
They quickly formed up, staring at the main entrance of the building.
Minutes later.
A white figure stepped out, clad in a haori—a puppet of Byakuya Kuchiki, now hosting the power of the Rinnegan.
Without a word, he slammed his hand into the ground.
"Summoning Jutsu: Three-Headed Dog!"
Boom!
Smoke exploded outward.A monstrous, three-headed dog, wearing a Hollow mask and radiating spiritual madness, burst from the haze with a chilling roar.
The Shinigami froze.
"Captain Kuchiki…!? Wait—that's a Hollow?!"
The sight of Byakuya's figure and the monstrous beast in the same breath disoriented them.
But the three-headed dog had no intention of waiting.
It pounced with savage speed, tearing into the crowd with jagged fangs.
The 12th Division scrambled to retaliate.
"Hadō #11: Lightning Palm!"
"Hadō #21: Hidden Flame!"
"Hadō #31: Red Fire Cannon!"
Spells rained down on the beast. Explosions echoed.
The Hollow hound shrieked—then began to split.
One head became two. Two heads became four.
The nightmare multiplied.
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