A journey into an infinite dimension

Time: February 9

Location: Tiangong City - Inside Tianyang Square

Kaguya did not attend the maid cafe opened by her class, Grade 2, Class 4. Instead, she just stood on a high place overlooking the bustling Ten'ou Festival scene with all kinds of shops lined up, without any fluctuation in her eyes.

Just like what she said to Shiori, she was not used to such lively scenes, so she usually would not participate unless it was necessary.

The reason was probably related to her previous life, but Kaguya didn't care about that.

After all, she didn't hate the feeling of being immersed in peace while others were bustling about.

"Ah, ah, Kaguya-san, aren't you going to enjoy the excitement of the Ten'ou Festival with everyone?"

However, this tranquility was soon broken. A familiar voice suddenly sounded behind Kaguya without any warning, with a hint of ridicule.

"You didn't go play either."

As if she already knew it, Kaguya was not surprised. She just turned her head slightly to look at Kurumi who walked to the side and stood side by side with her, overlooking the area below, and said.

"That's right."

With a slight smile, Kuang San looked at the Tianyang Festival in full swing, and her pair of unconcealed golden and red eyes were as calm as Kaguya's.

Afterwards, the two of them stopped talking and just looked quietly at the students and guests whose faces were filled with joy and happiness. For a moment, the world seemed to be divided into two parts, one was quiet and the other was lively.

Kaguya and Kurumi, on the other hand, occupied one side exclusively.

"Speaking of which, Kaguya-san, do you know?"

Another half moment passed like this, and then Kuang San suddenly spoke, breaking the inexplicably harmonious silence.

Turning to look at the girl beside her, looking at her profile that was as stunningly beautiful as the legendary Kaguya-hime, Kuang San said softly.

"Something about the Origin Spirit."

"I don't know much, but if you're interested, you can ask Shizhi. Although I can't find out anything about the Origin Spirit itself, I can find out related things."

Kaguya said softly.

"I asked Shiori-san about this a while ago, and the answer I got was far beyond my expectations."

As if she remembered something pleasant, Kuang San couldn't help but cover her mouth lightly and let out bursts of sweet laughter like silver bells.

"So I wanted to ask Kaguya-san if you could help me with a little favor?"

Kurumi didn't say what question she asked or what answer she got, and Kaguya didn't ask either.

"I don't think I can help you."

"Kaguya-san, you're joking. Since you're treated like the Origin Spirit and can't be investigated, I think you'll be able to help me a lot."

After a slight smile, Kurumi put away her smile and turned to look at Kaguya seriously and solemnly.

"Please help me go back thirty years to the past and prevent the birth of the Origin Spirit."

This is the reason why Kurumi found Kaguya.

She wanted to prevent all tragedies from happening, so she needed to eliminate the source of everything.

Using her angel who holds the power of time, the Angel of Time.

"Kyousan, you should have heard of the 'Grandfather Paradox'."

Turning to look at Kurumi, Kaguya said.

The "Grandfather Paradox" is a time travel paradox proposed by French science fiction writer René Bach-Zaville in his 1943 novel.

The content is roughly as follows:

If α goes back in time and kills his grandparents before his father is born, this action will create a contradictory situation:

Alpha goes back in time and kills his young grandfather. Without his grandfather, there is no father, and without his father, there is no Alpha. So who killed his grandfather? Or, if Alpha still exists, it means that his grandfather did not die because of him. So why did Alpha kill his grandfather?

At this time, several explanations emerged, one of which is the parallel world theory:

When α goes back to the past to kill his grandparents, the 'past' he arrives at is actually another universe B that is different from α's original universe, and what α kills are actually his grandparents in universe B (or α's action directly leads to the emergence of a new parallel universe). The death of α's "grandfather" or "grandmother" will only make α in universe B no longer exist, while α in universe A where α comes from, that is, himself, will be safe.

It's a change, but it's not a change either.

Because only Universe B has changed, Universe A, which α really wants to change, has not changed at all.

The idea proposed by Kurumi at this moment meets the definition of "Grandfather Paradox" in terms of various conditions.

Because the reason why the elves appear is because of the Origin Elves, if the Origin Elves do not exist, then the elves will not appear, and Kurumi will not gain power, and then she will not be able to go back to the past to prevent the appearance of the Origin Elves.

"I know, but don't underestimate my knowledge."

With a slight smile, Kuang San once again turned her head to look at the venue below, with a kind of determination, or perhaps obsession, flashing in her heterochromatic eyes.

"That's why I need to rely on Kaguya-san's strength."

"I hope that when I return to thirty years ago to prevent the birth of the Origin Spirit, Kaguya-san will also return to the time when I first became a spirit, take over as the being that gave me power, and give the Spirit Crystal I received from my past self to my past self, and then help that self embark on a different path from the one I have today."

"In this way, the order of time will be disrupted and all history will be changed."

"The Origin Spirit will not appear, and the anchor point of 'I became a spirit' will be anchored in the long river of time, and the Grandfather Paradox will not occur."

Kurumi going back to the past to prevent the birth of the Origin Spirit is the beginning of all this "things"; the power given to Kurumi in the past by Kaguya is the final result of this "thing"; and taking the spirit crystals of Kurumi from other time points and giving them to the original Kurumi is the whole process of this "thing", which is necessary for the beginning to produce results, and the purpose is to disrupt time and create loopholes in time.

The method Kurumi came up with sounds complicated, but it can be simply understood as follows:

α went back to kill his grandfather. He actually killed his grandfather, and then he would disappear, and what he did would not happen. The paradox was established - it should have been like this, but this α was born in universe B, and after killing the grandfather of universe A, this α replaced the α of this universe in this universe.

This is a metaphor, but it is undeniable:

The grandfather died, but α still exists. Therefore, in the grandfather paradox, the condition of "if the grandfather died, α would not be born, so the grandfather would not die" is not true. Because the grandfather died, α still exists, so the paradox is no longer contradictory, and the fact that the grandfather died will not be corrected because of the paradox.

Because in this whole thing, the existence of α is the beginning of everything, the 'cause' in cause and effect, and the death of grandfather is the 'result' in cause and effect.

If there is no "cause", there will be no "result", so it stands to reason that as long as there is a "cause", there will definitely be a "result".

If the 'cause' can be eliminated by the 'effect', which in turn leads to the disappearance of the 'effect', then make the 'cause' something that cannot be eliminated.

In many ways, this is a means of deceiving the world and its rules.

It's crazy, but also fun and quite feasible.

Kaguya felt the same way.

However, she did not agree to it just like that, but instead pointed out two loopholes to Kurumi.

"Your method is sound, but there are a few problems: First, you've ignored the theory of parallel time and space; second, the very idea of ​​'I'll go back in time and give you power' is a paradox."

Holding up two fingers, Kaguya looked directly into Kurumi's eyes and spoke calmly.

"I relied on your power to return to the past and perform this task. However, if the Origin Spirit hadn't been born, then you wouldn't have the power, and I wouldn't be sent back to the past. Similarly, I wouldn't be able to hand over the Spirit Crystal to your past self. In this way, the cause wouldn't be anchored, and the fact that the Origin Spirit's birth was prevented would be corrected, and all my efforts would be in vain."

The theory of parallel time and space is even simpler: What Kurumi is stopping is the origin spirit of this universe, or the origin spirit of other universes?

"Kaguya-san is really smart. The plan I racked my brains to come up with was found to have a loophole so quickly."

Although she said this, there was no sign of loss on Kuang San's face. On the contrary, her smile became even more intense because of this.

"Next, please allow me to explain for Kaguya-san."

"First, let's talk about the theory of parallel universes. Angels' power is superior to that of parallel universes. Therefore, as long as I lock the time of my work to the 'time' of this universe, it won't cause the creation of parallel universes."

To put it simply: if you are worried that the past you return to may be another parallel universe, then just lock the past you want to return to on the 'past' of this universe.

This is indeed a method.

Kaguya nodded secretly, but did not speak, just quietly waiting for Kurumi to explain the second loophole.

"Second question: As long as Kaguya-san doesn't rely on my power to go back to the past, that's all that's needed."

Revealing a playful smile like a little girl, Kurumi looked at Kaguya with a smile and said.

"Kaguya-san, don't you have the ability to do this?"

"The second one besides me."

Hearing this, Kaguya couldn't help but raise an eyebrow.

"Can you tell?"

"Yes, after all, I know the aura of the devil best."

Without asking where Kaguya came from, Kurumi just smiled and said.

"So, do you have any questions, Kaguya-san?"

"The third question."

Nodding, Kaguya gently raised her eyes, and her gaze gradually changed from indifferent calmness to ruthless indifference.

"Kyousan, why do you think I will help you?"

"Or rather, aren't you worried that I, who also possess the Keke Emperor and cannot be investigated, am the Origin Spirit?"

Chapter 202: Regarding the Chapter Title Gradually Letting Go of Itself

“————I’m not worried about that.”

Facing Kaguya's eyes that seemed like she might attack at any moment, Kurumi just smiled as usual.

"Blind trust—I don't think our relationship has reached that level."

Kaguya said calmly.

"It's not blind trust, I just believe in Shiori-kun."

Looking at Kaguya with an unchanged smile, Kurumi narrowed her eyes and looked as cunning as a fox that had stolen a chicken.

"Therefore, I am also willing to believe in Shiori-san's alter ego, Kaya-kun."

It was not until this moment that Kaguya finally showed a surprised expression.

Apart from Shiori and Maruna, the first person to see through this was not Kotori and the others, but Kurumi, who had known them for a shorter time than Kotori and the others?

"When did you find out?"

But if she was discovered, she was discovered. Kaguya had no intention of silencing her.

Now that she has Yela as her backer, Kaguya no longer needs to worry about Cai Huo - although she said so, she will not go back to Shiori directly.

One reason is to give Shiori a chance to grow independently, and the second reason is that she still has branch mission ③ regarding Cai Huo to complete.

That's it.

"I discovered this from how Shiori-san addressed you, the progress of your relationship, and the information I gathered."

Perhaps she remembered something interesting, and Kuang San couldn't help but cover her mouth and smile softly.

"After all, Shiori-kun doesn't hide anything at all most of the time."

"Well, that's the truth."

Kaguya had no objection to this.

"So why do you think I'd help you?"

"Because the reason why Shiori-kun sealed the spirits was because humans were afraid of the disasters caused by the spirits, right?"

Tilting her head slightly, Kurumi said softly.

"My approach can solve all the hidden dangers in one fell swoop."

What Kurumi said was indeed correct. This was the reason why "Ratatoskr" asked Shiori to seal the elves. At the same time, the reason why Shiori wanted to seal the elves was not only because of the commission from "Ratatoskr" behind Kotori, but also because she wanted to save these girls.

If Kurumi's approach had succeeded, the girls would not have turned into elves, and they would all have lived the lives they were supposed to live, instead of turning into elves and being hunted by humans.

"That's someone else's fault, not mine."

However, even though she knew this, Kaguya did not show any reaction, but just continued to look at Kurumi calmly.

Then, under her gaze, Kaguya slowly spoke.

"The reason I helped Shiori seal the spirit is because I wanted her to have the power to protect herself."

"Kyousan, you should know very well what will happen to Shiori if he doesn't have any power after experiencing so much darkness."

"I will not allow that to happen. Therefore, the birth of the Origin Elves was prevented. The Elves no longer exist. This matter does me no good."

Kaguya spoke these extremely selfish words calmly, and her gaze did not change at all as she watched Kurumi's smile gradually disappear.

"Also, since you know of my existence, you should also know why I am operating in the outside world under this identity."