To create Honkai Impact 3rd in a world where Kallen exists.

"Perhaps, I wanted to give it as a return gift."

She gave an explanation and answer that didn't fit either of their styles...

"...A return gift? What, Klein... Has the Herrscher of Corruption already destroyed your mental center?"

Mebius was so angry that he even laughed out loud, and retorted sharply.

Honestly, Klein is so disobedient... She's nothing like the Klein I used to understand...

What happened to this world?

So... it was the Herrscher of Corruption who did it, right?

"……maybe."

The scene before Klein's eyes became increasingly blurry, and even Mebius, who was right next to him, began to fade into the background.

She had seen many videos, images of people on the verge of death.

"Actually, what the doctor left behind at that time was not just that video footage."

"So, I must also..."

Her voice grew softer and softer, and her speech became increasingly slow.

"...No one here is rushing you."

Mebius said coldly, his heart clenching as he looked at Klein's weak appearance.

"Feel sorry……"

Klein's voice was soft; unless you stood close enough, you could barely hear her.

How embarrassing...

"Back then, the Doctor should have gone into the hibernation pod with us too..."

"But when I returned to the lab, she was gone..."

"Besides the video you saw, she only left me with one sentence..."

“I’ve never understood what she meant… Back then, she said…”

"..."

"...?"

Klein opened her mouth, but her hearing could not catch the sound she uttered.

The erosion intensified once again, and the module she was in charge of for language finally succumbed completely.

She could no longer utter a single word.

The real Möbius's final words should have been revealed in the next sentence.

But she was powerless to do anything, and Mebius no longer cared about it. She closed her eyes slightly, her eyelids trembling slightly.

When she opened her eyes again, she saw the other person's final moments and their trembling, self-destructive hands.

Like the Grey Serpent before her, Klein made the same choice. The most effective way to stop the spread of the Herrscher of Corruption is to destroy its carrier.

She pondered her own structure, reaching into the key components that kept it running.

And that's... the end...

But just as she was about to do so, she found herself suddenly unable to move.

—She was deprived of her ability to move.

The dullness of her senses made her wonder. According to her calculations, she should have had time to eliminate the threat to herself... Could it be that she miscalculated?

But she quickly realized that what had deprived her of her mobility was not the Herrscher of Corruption... but rather, Dr. Mebius in front of her.

She turned her surprised gaze to Möbius.

The enemy actually used those replicas they created to attack her? Weren't they supposed to be used against the Herrscher of Corruption?

"Aren't you being a little too arrogant, Klein?"

“I gave you life, you have no right to dispose of it at will.”

"...?"

Klein was unable to speak; her language center had been damaged, and she could only look at the other person's somewhat cold face.

But...why?

Clearly... she had already prepared the clone, and besides, she's hopeless now.

and many more……

Suddenly, she felt the corrosive marks leaving her body, and thus understood why the other person had said they could save her. As the first successful case of the Domination Experiment, Möbius absorbed all the corruption that Klein had suffered, guiding her back to paradise.

But... wouldn't that... make the doctor...

"In this way, the only possibility of the Pure Land of the Past being connected with the outside world is also cut off."

"Yes, it's all your fault. This... I'm really going to die."

She will never have another chance to go out into the outside world; she will be completely taken over by the Herrscher of Corruption.

Mebius helplessly covered his face with his hands, sighed, and revealed a sadness that Klein had never seen before, as well as an indescribable feeling of impending death.

Is it a request? Or a hope? Or perhaps a final glimpse to remember?

“You acted impulsively first, Klein.”

She said childishly, making it clear that the other person was the one who didn't follow rational decision-making first...

Therefore, she should blame the other party for choosing this path.

"Oh...no, I'm not as stupid as you."

"Don't take yourself too seriously. I... am just trying to achieve my own infinity."

She stubbornly swallowed back her childish words, unwilling to express her true thoughts even in the last moments of her life.

But her actions are what truly reveal her thoughts.

"Klein..."

"Klein?"

She called softly, but received no response. The small figure had already closed its eyes and fallen into a deep sleep.

—She should have given up long ago.

These burdens are still too heavy for a puppet.

"...It looks really bad."

With an enigmatic expression, Möbius approached Klein. "Don't you even have the strength to say goodbye?"

"However, this is also a good thing."

"A snake...doesn't want anyone to witness its end."

"Just get some sleep, and when you wake up again... you'll be 'free'."

Thinking of this, she felt a little reluctant.

When she awoke again, Klein's 50,000-year-long duty would no longer be fulfilled.

She must find a new reason to live and face the uncertain future with her own will.

That's not easy for mechanical life.

As for what the real-life Möbius said to Klein in his final moments, she will probably never know.

—She asked Alicia, and she said it was a memory she was missing; she wouldn't lie.

But that doesn't matter, because at this moment, she has already understood.

It will only be...

"The future... is the last kind of infinity I want to create for you."

Goodbye, my understanding one.

Mebius's phantom finally opened its arms to Klein on the sofa, giving the sleeping Klein a gentle embrace.

Even so... it's difficult to feel warmth from the body.

Even so, this time it's still a farewell where we'll never see each other again.

But she was willing to give all her warmth to this one and only person who understood her.

She won't let anything happen to her again, no matter the cost.

...

She's so gentle! 乆乆乆乆乆

The hardest thing in paradise... is sorrow.

[Snake! My snake!]

Is this all the heartwarming and happy story you were talking about? (Tears)

[This is so heartbreaking, I can't stop crying...]

In the Golden Courtyard Hall,

While the initial interactions were somewhat cheerful, the atmosphere turned sour when the focus shifted to the tragedy of Klein.

The battle-hardened Alicia had already keenly sensed the presence of the knife.

But it was too late for her to escape.

Like a frog being slowly boiled in water, the twists and turns brought the story to this low point, culminating in the scene where Möbius dies for the only one who understands him.

Most heroes and villains are destined to die.

Unlike Bronya and Kiana, Alicia certainly understood that she wouldn't believe in the idea of ​​four people living.

But death... is different too. Möbius showed a completely different personality in the face of death.

The snake, which claimed to be immortal, did not reveal much of its ugliness in the end, nor did it lose its cold and ruthless nature. Yet, completely different people made similar choices.