Danmaku, my skills refresh weekly.

"Therefore, to save Metluia, who is already 'dead' in the 'Cial route,' it's not enough to simply bring the past Metluia back to life; the past must also be transformed into the shape of the 'Cial route' to confirm that the Metluia being saved is Alfia's sister, and not someone else from another route."

Charles slammed his hand on the table: "Only through mutual effort and the weaving of lies to deceive the 'world' can history be rewritten."

Simply put, it's about deceiving witnesses.

When Metluth 'died,' no one knew, just like Schrödinger's cat.

That way, by altering the past and 'faking death,' one can deceive the vortex of chaos and thus change the present.

This method is something that a senior figure who has mastered Steins;Gate has extensive experience with and can be used as a reference.

As it happened, Metlucia died because her health deteriorated after giving birth to Bell, and she succumbed to her illness. At the end of her life, no one came to see her off. Even Alfia only knew that Metlucia chose to turn herself into ashes.

“This gives us room to maneuver.” Charles lit the Heavenly Fire on the plan.

"Is this why you used Metlujah's body to do whatever you wanted?" A voice suppressing anger rang in Ciel's ears, followed by a series of blurry palm strikes.

"Ouch—, stop! What did I do?!" Charles was pinned to Alfia's knees and slapped repeatedly on the buttocks.

"You dragged Metluth's body around the city causing trouble. You took Metluth to the dungeon." Alfia's eyes blazed with anger.

"You can't apply double standards! You're the one who taught me all of this!"

"How did I teach you?!"

"Don't even think about becoming a hero until you die a hundred times!"

"Metluja doesn't want to be a hero!"

“If I’m not a hero, how can I survive? To us, she’s still a ‘dead person.’ No matter what I do, could the outcome be worse than this?” Charles thought angrily.

For Ciel, Metluth was not only his sister-in-law, but also his wife.

To save Metluth, she must give birth to Bell.

Without Bell's worldline, there would be no "Cial's worldline".

He risked his life to save someone else's wife; if it weren't for Alfia, he wouldn't have had time to care about anyone else's life or death. Let alone dabble in 'time', which could change the world.

"Alright, don't argue because of me, sister. Ciel is right, nothing could be worse than this, right?" Metluja comforted her. "I'm already happy that I can become healthy without having to work out so hard."

"If it were me, I'd fall over even if I were fighting with a sword," Metluja thought back to her recent adventure in the dungeon with her sister.

Despite having exceptionally high stats at level 5, they still manage to sprain their ankle during battle...

and……

She didn't want Charles to fall out with her sister because of her, as that would benefit no one.

"..." Alfia fell silent.

She knew very well that everything Charles did was for her.

Whether it's about helping Belle save the world or rescuing Metluth, it's all for her own sake. Ciel's initial goal was simply to survive, and he was extremely 'selfish'.

How many people have he schemed against to get to where he is today?

The only exception is when it comes to her own affairs, and perhaps the purpose is for her personally.

Angering Ciel will bring no benefit; at worst, it will only maintain the status quo.

Alfia's hand slowly softened, soothing Charles's buttocks.

"I'm sorry. I'm just upset that you don't treat Metrude humanely at all."

"Hmph~" Ciel lay on his lap, turning his head arrogantly: "If you're so good, then you do it!"

"I'll go, I'll go." Alfia put Charles down, sat in front of the screen, and after explaining the operating principles to Fels, placed one hand on the crystal and pressed the button with the other.

then……

She habitually manipulates the gospel to make herself float.

In the scene, Metlujah's field of vision rises, the rock wall zooms in rapidly, and then with a bang, the scene goes black.

Alfia looked at Fels helplessly: "Why is the screen black?"

Fels covered his face: "This is just a device for transmitting orders. Releasing magic according to orders, simple movement and combat are fine. But complicated operations are impossible to complete..."

"Why is Ciel acceptable?"

"My instruction was to sit on the wand and release the Gospel toward the tip of the wand. A simple command indeed."

"so……"

"Did you flash into a wall?" Xia Er covered his face.

Ciel took over the position, pulled Metluth out of the wall, and saw the sight of his hand covered in blood from her nose...

"Ahhhhhhh!" Metlucia's eyes blazed with fire, like a raging dragon: "Sister? What are you doing?! Sister!"

"It's all because of this broken machine! Metluja, I absolutely didn't do it on purpose!" Alfia shouted in protest!

"Then why don't you walk properly!"

"Doesn't that drain your energy?! What if you faint again?" Alfia argued.

"Ahem..." Ciel, controlling Metluth to wash her face with the panacea, coughed and said, "Ask Fels about this; it's a prop she designed."

Three pairs of eyes were fixed on the little girl.

Fels: "!"

Oh no, the omen of death is flashing!

Chapter 455 Bell's Paradox

Under the watchful eyes of the three bullies, the hatred shifted to Fels.

As Fels explained, since it involves technology that transcends time, its applicability is limited.

"The complex operation requires the use of the crystal here and the user wearing the device to achieve a spiritual resonance, thereby transmitting commands to the puppet's consciousness from the past."

“Currently, the only abilities that can provide real-time feedback are movement and jumping, which require quick reactions,” Fels said, pointing to the 'direction' button.

In fact, including dialogue, specific commands are needed to transmit the words that you want to repeat to the past. Therefore, puppets will look rather dull and speak much slower.

This includes the fact that Xia Er's previous beating was simply a 'delay' caused by the puppet being unable to adapt to the input of the speaking command too quickly.

"Human joys and sorrows are not shared. After all, separated by screens and time, even the person in question cannot truly empathize. This is both an advantage and a disadvantage."

Fels spread his hands and said, "Since we have acquired negative sensory states such as immune fatigue and pain, we have also lost our emotions. This is inevitable and cannot be changed."

Without feeling breathless or receiving any physical feedback, one cannot empathize with Metluth's past.

This theory was confirmed when Metlugh herself went up to do it.

The puppet only used her own body to soak in the hot spring for thirty minutes before experiencing symptoms such as decreased reflexes and dizziness.

"So, why soak in hot springs?"

"Because I've never soaked in it before..."

"But you can't understand it, can you?"

"Oh right! Like bubbles?"

While Metluja was enjoying the pleasure of controlling 'herself,' Ciel took the time to keep an eye on her, avoiding any risks, and discussed future plans with Alfia.

“As I said before, we will ‘deceive the world.’” Charles took out the [Frozen Sword Hilt] he had retrieved from the hot spring secret realm and said solemnly, “The method… my past self should have already thought of it for me.”

In the world of DanMachi, the only powers involving time are the Secret Realm that froze Ais and the Heavenly Fire of Olympia.

In reality, the fire of heaven is not a benevolent thing; its use has significant side effects, such as being corroded by the filthy flames.

Unless absolutely necessary, Ciel did not intend to actually let Metluja be infected with that substance; he merely intended to use the "demigod power" there to complete the sealing of the timeline.

"As long as we follow the clues of history step by step, we can smoothly reach our timeline. Then, using unknown information, we can deceive the world," Charles gave his answer.

but……

"There's still one problem that can't be solved, and that's Bell..." Charles sighed, "Alfia, can you be sure whether Bell in this world is male or female?"

"..." Alfia bit her lip: "Male."

Ciel smiled wryly: "That's right. Now that we know of Belle's existence and that she is influencing us, it means that Metlujah's fertility depends on the timeline."

"Damn it, does that red-eyed brat have to get away with it? Sending my sister to the baboon to be defiled..." Alfia bit her nails, her eyes sharp.

"Hey, from what I understand, it was clearly Metluja who took the initiative." Ciel rolled his eyes. "You need to be moderate in your sister complex."

"I don't care, I've already done it all over again. I can't do this again." Alfia glanced at Metlucia, who was engrossed in the 'game,' and muttered resentfully, "That feeling is disgusting..."

"It's already a 'fait accompli' of the past, calm down."

"Isn't there any way to change it?" Alfia pressed on Charles's shoulder: "Quickly use your magic that can grant any wish and change the past for me."

“You’re making things difficult for me… and what about Bell if we change this fact? Make him disappear?” Ciel rolled his eyes. “Or, do you want to abandon Metluja and let her exist in another timeline that has nothing to do with you?”

"Then..."

"Don't be silly. What do other timelines have to do with you? There are countless Metlusias out there that need to be saved, and if you can't be involved in her future, then such a rescue is meaningless."

Charles said in a deep voice, "At best, it's just a 'dream.' Just like Cassandra's daily precognitive dreams."

"...Then think of a way that satisfies both sides."

"In short, I don't want to interfere in other people's relationships. If my sister San still meets Crane despite our interference, then we'll let nature take its course. If things don't go smoothly, then we'll have to resort to violence," Charles said frankly.

"You really have a way?" Alfia was stunned. She was just habitually being willful.

"We can only say we're trying. An 'artificial embryo,' or something like that from Belle's 'Dream Crystal,' at least we need to make sure it's a boy." Ciel shrugged. "But like I said, these methods are a bit too inhumane towards my sister-san."

"I don't really like it."

"Furthermore, this plan requires confirmation of Bell's gender. If we ultimately deceive the world, then the gender of Bell in your memory may also have been 'disguised.' I need to see it with my own eyes before I can arrange the subsequent plans."

If the Belle of this world is actually Belle herself, then things become much simpler. There's no need to consider other timelines; you only need to think about a one-way path: past and future.

"What are you two talking about in secret?" Metluja left her seat and moved closer to Alfia.

“About you,” Alfia replied.

"Why are you here?" Charles asked.

Metluth pointed at the screen: "I ran into Kuku and the others, what should I do? I think I accidentally punched them..."