Back in the DxD world—
Rias Gremory suddenly received a message from Izumi.
She blinked in surprise.
"…A war between worlds?"
And not just any war—
The reward was a divine authority.
That alone was enough to spark her interest.
Without hesitation, Rias relayed the message to her brother, Sirzechs Lucifer.
Sirzechs listened carefully.
Then, a faint smile appeared on his face.
"…Interesting."
However, he didn't act recklessly.
Instead of immediately mobilizing the Underworld, he chose a more cautious approach—
He gathered the top-tier powers of the DxD world.
Gods.
Devils.
Dragons.
And asked them a simple question:
"Are you interested?"
That single message—
was enough to shake the entire world.
Somehow, the news spread.
No one knew how.
But suddenly—
everyone knew.
A multiversal war.
A chance to obtain godhood.
An opportunity to fight without restraint.
The world erupted.
Countless beings wanted to participate.
The temptation was simply too great.
Even Rias felt overwhelmed by the sudden escalation.
Left with no choice, she contacted Izumi again.
"…This has gotten out of hand. You decide what to do."
On the other side—
Izumi stroked his chin thoughtfully.
"…If that many people are interested…"
A grin spread across his face.
"Then let's make it bigger."
With that—
he took out a Gate of Connection.
A shimmering construct formed in his hand.
Moments later—
a one-way passage linking his world to the DxD world was established.
And then—
Izumi stepped through.
This time, he wasn't alone.
Following him were:
- Rita Rossweisse
- Raiden Mei
- And several others
As they arrived, the group looked around curiously.
Rita tilted her head slightly.
"So this is Izumi-sama's original world?"
"…It feels rather ordinary."
That was her honest impression.
No grand palace.
No divine aura dominating the land.
Just—
a normal house.
Mei and the others shared similar thoughts.
Izumi's eyebrow twitched.
"…You don't have to say it out loud."
He let out a sigh.
"Don't judge a book by its cover."
"This world is deeper than it looks."
"There are countless beings here stronger than Herrschers."
"And plenty of gods too."
Rita paused.
Then nodded slightly.
"…I see."
Considering Grayfia came from this world—
it made sense.
Izumi didn't dwell on it.
Instead, he led them straight to Kuoh Academy.
The moment he stepped onto the campus—
a strange feeling washed over him.
"…Feels like it's been forever."
After the battle with EXE, Izumi had become famous.
And Kuoh Academy—
had capitalized on that fame.
The school had expanded significantly.
New buildings.
Larger grounds.
A completely different atmosphere.
Waiting for him—
were familiar faces.
Rias and her group.
Alongside—
former classmates.
And then—
Izumi saw something shocking.
Hikigaya Hachiman…
holding hands with—
Totsuka Saika.
"…Wait."
Izumi froze.
"…They actually got together?!"
He looked around again.
More surprises.
Yukinoshita Yukino—
now a teacher.
Not just her—
many members of his former elite class had stayed behind as faculty.
After the EXE battle, their strength had reached B+ rank.
Teaching here made sense.
Izumi clicked his tongue.
"What a lineup…"
Without wasting time, he turned to the now-principal—
Hiratsuka Shizuka.
"I'm here to install a gate."
He pulled out another Gate of Connection.
"You'll be able to travel to my world through this."
"And if you want to move there permanently…"
He smirked.
"I don't mind."
He placed the gate in the center of the field.
Instantly—
a portal connecting two worlds opened.
The crowd stirred.
Excitement.
Curiosity.
Anticipation.
They had all heard rumors about Izumi's world—
A place where:
- Conflicts were resolved through games
- Powers could be won from others
- Entire worlds had merged
Then—
Izumi turned toward Yukino with a teasing grin.
"Yukino-chan, you haven't changed at all."
His gaze dropped slightly.
"…Still completely flat, I see."
Silence.
Then—
a freezing glare.
Yukino's eyes could kill.
"This man…"
Years had passed.
But his personality?
Absolutely unchanged.
During the EXE war, he had teased her endlessly about this.
Apparently—
he still wasn't done.
"Yahallo~ Izumi-kun!"
A cheerful voice interrupted.
Yuigahama Yui, now the school nurse, waved at him.
"How long are you staying this time?"
Izumi shrugged.
"Hard to say."
"I just came to set up the gate."
"If you've got time, come visit my world."
"You can even live there permanently if you want."
That statement—
made everyone think.
The DxD world was peaceful now.
Too peaceful.
Even with occasional world connections—
nothing truly threatening appeared.
Many of them had grown… bored.
And now—
a new world full of possibilities stood before them.
A place where strength could still grow.
Where excitement never ended.
Izumi's world—
was calling.
One by one—
people began making decisions.
"…Maybe I'll go."
"…I want to get stronger."
"…Let's talk to my family."
Some even considered moving entirely.
After all—
if you could grow stronger…
why remain stagnant?
Izumi watched silently.
A faint smile on his face.
The seeds had been planted.
And soon—
this world too…
would become part of something far greater.