"Humans, in their rebellion against the gods, will eventually turn themselves into demons."

The voice, suspected to be Kevin's, spoke solemnly.

From the mire symbolizing filth.

Countless black demons took form.

Twisting and writhing as they charged toward Acheron.

All of this.

Was reflected in Acheron's purple eyes.

"We staked everything."

"Only to bring about the destruction of two worlds."

Here it comes!

It's finally here!

Old Yang's spirits lifted!

Though it wasn't the complete phrase.

The meaning was close enough!

At this point.

Everything described in this short video about Izumo perfectly aligned with what had happened in his homeland!

The gods of Takamagahara corresponded to the Herrschers!

The demons were humans corrupted by the Honkai!

Then…

What's next?

On this planet called Izumo.

Would this person, suspected to be Kevin, also play a pivotal role?

What would their fate be?

Acheron, holding the sword known as the Origin's World-Sundering Blade.

Amidst the ruins.

Slashed downward into the air!

Slashed forward.

A flash of red light.

A torrent of energy poured forth!

In an instant, the heavens and earth changed!

Purple lightning swept through everything!

Acheron's figure soared into the sky.

Passing over the massive sword mound.

"Clang!"

The two World-Sundering Blades.

The Origin and the End collided!

And then both were shattered!

The man's voice grew hoarse and deep.

As if it had reached its limit.

"The Takamagahara where the gods fell, long ago, was once as beautiful as Izumo, wasn't it?"

"So…"

"Do you remember why Izumo forged the sword?"

Standing beneath the crumbling sword mound.

Acheron replied:

"For a lie."

"A destination that never existed."

"We've long since stepped into Its shadow."

"Every step forward, we can never turn back."

In the ruins.

Only Acheron remained.

She suddenly looked up.

Gazing at the black sun in the sky.

From this perspective.

It wasn't a black sun.

But an unfathomably massive black hole!

Acheron picked up the shattered blade.

A single tear of blood fell onto the broken sword.

The blade was instantly dyed red.

The broken end continuously reforged itself.

Forming a complete longsword!

"Until the final sword (person) was forged…"

"…Nothingness."

Black Swan was utterly stunned!

What kind of magnificent history was this?

No wonder in the story.

Acheron repeatedly emphasized that her sword must not be drawn lightly!

Behind it all, there lies such a moving and tragic tale!

No wonder Acheron's memories are as deep as the ocean.

No wonder she carries such a heavy burden of bloodshed!

To survive in such an environment...

The depth of her heart.

Has long surpassed the ordinary level!

At this moment.

Acheron, holding the crimson longsword, began to undergo an inexplicable transformation!

The horns on her forehead gradually dissipated.

Her long black hair turned pale.

Facing the black hole in the sky.

She delivered the final strike!

In the crimson light of the blade.

It was as if a ukiyo-e scroll unfolded.

Depicting the history of Izumo and the origin of the twelve swords...

The colorful scroll reflected in Black Swan's eyes.

She thought of the name of this video.

— "Three Thousand Worlds, Severed by a Single Blade."

"So that's it..."

"This is the meaning of 'Three Thousand Worlds, Severed by a Single Blade'..."

Black Swan's heart surged with emotion!

The content of this video left her utterly amazed!

It presented the history of Izumo with a unique aesthetic.

In just a few minutes.

The emotions built layer by layer!

As if she had read through a historical tome of the ages!

"I know this world is as fleeting as dew."

"Yet..."

"However..."

The video quietly ended amidst Acheron's sigh.

Black Swan still felt unsatisfied.

As for Acheron.

She rarely showed a somber expression.

She slightly closed her eyes and then opened them again.

It seemed as if she was digesting the surging emotions.

Her thoughts were unsettled, and memories sharpened.

Through this video.

The past once again unfolded before Acheron's eyes.

Acheron couldn't help but murmur to herself, "Izumo emerged victorious in the brutal war of survival, establishing a dazzling and tumultuous city-state..."

"But the divine power of Nihility began to influence Izumo, and humans gradually turned into demons."

"At that time, I held the beginning, while that man held the end."

"In the final battle, he abandoned the path of salvation and became the Hakuhatsu Ki."

"I ended that man's life, alone..."

"And both Izumo and Takamagahara ultimately returned to Nihility..."

Hearing Acheron's self-narration.

Black Swan was practically itching to pick up a pen and record this history word for word on the spot!

Of course.

She was a Memokeeper.

She didn't need such a simple method of recording.

What she witnessed and heard today... would all be crafted into a unique [Memory]!

Beside her.

Old Yang's heart was also in turmoil, utterly shocked!

That man was referred to by Acheron as the Hakuhatsu Ki!

And white hair... was the distinctive feature of the Kaslana family!

It was now confirmed.

The Hakuhatsu Ki was Izumo's Kevin!

The only difference was...

In this world.

The Hakuhatsu Ki abandoned salvation...

And was ultimately ended by Acheron herself.

While in his own homeland, that man.

Believed that no matter the cost, humanity would surely overcome the Honkai...

"Thank you, Yu Ling..."

"For allowing me, on this day when I am tainted by Nihility and gradually forgetting everything..."

"To once again remember those deep shades of red..."

Acheron looked up at the sky and sincerely sighed.

At this point.

Acheron's "past and present" were finally connected.

After Izumo and Takamagahara returned to Nihility.

Acheron, alone, also became a Self-Annihilator gradually losing her sense of existence.

Embarking on the Path of Nihility.

She drew power from Nihility, yet used that power to fight against Nihility!

"She is truly extraordinary!"

"Across the entire universe, it would be hard to find another person with a similar fate..."

Suddenly.

Black Swan noticed something unusual about Welt beside her.

He seemed to be in a trance, muttering something about "Origin and Finality," "Herrscher of Human," and other such terms.

"Mr. Welt, are you... alright?"

At this moment.

Old Yang took a deep breath.

And approached Acheron.

"Raiden Mei... please allow me to call you that for now."

"Would you believe it? In my homeland, there was once an experience strikingly similar to that of Izumo..."

"In your world, it was a malevolent god, while in my world, it corresponded to a Herrscher, and the divine blade corresponded to the Divine Key..."

"I once had a companion who looked very much like you, and her name was also Raiden Mei."

"So..."

"I feel that I can trust you!"

Acheron glanced at Old Yang with some surprise.

And nodded.

"I feel the same, Mr. Welt."

"You also remind me of the times I fought alongside my companions..."

Beside them, Black Swan blinked.

Once again, she had become a background character!

Unexpected.

Welt actually has a similar story!?

And there's more?

Due to the Self-Annihilator, Acheron's memories are nearly impossible to recover.

But if it's a Nameless from the Astral Express...

There might still be a chance!

Old Yang noticed Black Swan's gaze on him and felt somewhat uneasy.

After hesitating for a moment, he finally spoke, "Miss Black Swan, to be honest..."

"In my understanding, there was someone in my homeland who was both similar and different from you."

"He was a fusion warrior from the previous civilization, named Aponia."

Black Swan's eyes immediately lit up with interest.

"Oh? Mr. Welt, I've never heard of such a thing."

"Once the current events are over, if there's a chance, perhaps you could tell me more about it."

"I believe the Garden of Recollection could offer sufficient compensation in exchange."