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Soul Society - Seireitei
Division 5 Barracks
Aizen Sōsuke sat calmly at his desk, dark-framed glasses resting on his nose, face as warm and composed as ever.
His hand moved smoothly across the paper, writing something down, but behind those lenses, his eyes were filled with contemplation.
His mind wasn't on the paper.
No, it was focused on the world of the living—Karakura Town.
What exactly happened?
How could something have slipped beyond his control?
"Interesting…"
"Things were finally starting to get interesting."
Aizen's eyes narrowed slightly.
Was it those old geezers?
Or perhaps could it be... him?
His thoughts stirred with subtle unease… and yet, a trace of excitement.
Yes.
This was good.
This made things so much more fun—so much more worth it to drag that being off his heavenly throne.
And despite the unknowns, Aizen wasn't worried.
If anything, he was even more intrigued.
Now, all he needed was Gin's report.
Though, before Gin could bring him any news, Kaname Tōsen showed up first.
"Captain Tōsen," Hinamori Momo bowed slightly, then quietly excused herself from the captain's office, sensing the tension.
Once the room was clear, Tōsen's expression turned grim.
"Aizen-sama… there's a problem in Hueco Mundo."
Aizen paused for a fraction of a second, then smiled softly. "What is it? Another friendly sparring match?"
Obviously referring to the previous clash between Nelliel and Nnoitra Gilga.
Nothing in Las Noches escaped Aizen's notice.
In fact, he knew full well that Nelliel was still alive.
Besides, Hollows evolving into Arrancars, retaining some beastly behavior, was to be expected.
Survival of the fittest, after all. That principle applied to humans, Shinigami, and Hollows alike.
But this time, Aizen's assumption was off the mark.
Tōsen shook his head seriously. "Las Noches is on the verge of falling."
"???"
The smile on Aizen's face froze ever so slightly.
He stopped writing and looked up, face blank. "Are you serious?"
Though Tōsen was blind, he could feel the oppressive aura Aizen emitted as soon as the words left his mouth.
He nodded silently, saying nothing more.
Aizen squinted slightly. "You mean to tell me even with the Espada… Las Noches was still… taken?"
Tōsen nodded again.
A heavy silence filled the captain's office.
Aizen's expression grew unreadable.
He wasn't sure if he should be more surprised that Las Noches was under attack… or that the supposedly elite Espada turned out to be this useless.
Still, putting aside the presence of the Espada…
"Someone actually dared to attack Las Noches?"
Aizen genuinely sounded a little surprised.
The Reiatsu radiating from the Espada made the entire fortress a no-go zone within Hueco Mundo.
No Hollow in their right mind would even think about stepping close.
So what the hell happened today?
And more importantly, who had the strength to actually pull it off?
Because if the Espada were struggling, then whoever this intruder was had to be at least on their level.
Aizen frowned slightly.
But when had someone like that appeared in Hueco Mundo?
He had personally explored nearly every corner of the dimension during his experiments.
So that only left one possibility.
A subtle gleam flashed behind Aizen's lenses.
A new enemy—appearing from nowhere.
And heading straight for Las Noches?
Hard not to be suspicious.
Was this an attack… aimed directly at him?
His eyes narrowed.
Had his plans been exposed?
But who? …Urahara Kisuke?
The name popped into his mind instinctively, but he quickly dismissed it with a shake of his head.
No—Urahara didn't have the power to pull off something like this.
And besides, Karakura Town and Las Noches were hit around the same time.
Was someone really targeting him?
Even Aizen, for all his cunning and foresight, couldn't make sense of it just yet.
In the end, he blamed it on those fossilized old farts… or maybe even the elusive, almost mythic Soul King.
With a small sigh, he pushed the thoughts away.
Then, in one smooth motion, he picked up his captain's haori from the coat rack and tossed it over his shoulders.
A composed smile returned to his face.
"Well then… let's go see which bold guest thought they could drop in unannounced."
No—scratch that.
They didn't just drop in.
They trashed the place.
Now that was something Aizen just had to see for himself.
Besides, lately, things seemed to be spinning more and more out of his control.
With that unsettling thought, Aizen opened a Garganta and, with Tōsen in tow, stepped into the void toward Hueco Mundo.
— — —
Meanwhile…
Lynn was monitoring the situation in Hueco Mundo through his [Devil Piece] skill.
He glanced at the pink-haired boy in front of him. "Yo, Sukuna—you still breathing over there? I swear I was going easy on you."
So, what was Lynn up to?
Oh, nothing much—just casually solving the Jujutsu Kaisen world.
As for Strike the Blood? He'd left that in the hands of Avrora, Saeko, and a few others.
Right now, Lynn's full attention was on the "Main World" tag in his [Devil Contract] skill. He had a feeling that was the one that mattered most.
And Grayfia?
Well, she was currently being "taken care of" by Senhime.
He hadn't forgotten the most important world in this whole mashup—High School DxD.
But for now, that was Senhime's problem… at least until he showed up.
Senhime: "???"
Excuse me?!
This woman doesn't play fair for real!!
...
Underworld
Grayfia stood cold and imposing, her expression icy as she loomed over Senhime.
"Lynn…" she said with deadly calm, "You know where he is, don't you?"
Senhime: "..."
She wiped the cold sweat from her brow and forced a smile.
Against a strong Satan-level opponent, she was really pushing her limits.
Even just being near Grayfia put enormous pressure on her.
As for Lynn's whereabouts?
Yes, she knew.
But—
"He isn't really… in this timeline," Senhime said hesitantly.
Grayfia's brow twitched. "You've said that several times. If you're going to lie, could you at least try changing the excuse?"
Senhime nearly burst into tears.
"B-But I'm telling the truth!!!"
"Lynn is literally five hundred years in the future!!"
.
.
.