Dancing Circles on the Horizon of Events

…………

In the corner of the dining room where the waltzes left off, Alfania, the inner head of the elf, was looking out by himself.

What was visible to Alfania like that was the appearance of a white light dot floating in the black world and a planet stained with blue and white. Not that she was gazing at any one point of the view she was seeing, but that she was just quietly looking out and holding onto her thoughts.

And when the day world was about to run out underfoot and the night world was about to envelop the periphery --,

"... Is that... a shooting star...?

—— Alfania, underfoot, noticed the presence of light sucked into a planet engulfed in darkness at night, drawing sparkling and thin lines. That's not just one thing. There was paralysis and rain, and a number of lines of light poured downwards than underfoot. That's a meteor group. Or something like that that could be called meteor rain.

as she eats in and sees into the grain of light--,

"Did you find something?

—— Yuki approaches her, wondering how Alfania behaves.

In response to such yuki, Alfania replied with pleasure, as it seemed, with a girly grin.

"A star. The stars are flowing under my feet. That must be a shooting star. I didn't know we were going to see a shooting star from above..."

"... Oh, that's true. And lots. Unusual..."

"Uhm. But...... I always wonder why are you glowing?

"Why is that?

Yuki enters into Alfania's inquiry. But that's not because we didn't know why the meteor would glow. Instead, I understood and thought about how to answer it.

And slightly later, Yuki answered this to Alfania.

"... in the country where I grew up, the dead were said to be stars. And the shooting stars glow when the dead return to the living, because they come down from the sky."

It's a fairy tale passed down to the Boreas Empire and the countries around it. Boreas is a story that should naturally also be passed down in the elves located directly next to each other. Yuki decided to tell a fairy tale before explaining the theoretical story.

However, Alfania's reaction was very different from Yuki's expectations. As for Yuki, I expected Alfania to laugh with her nose, laughing bitterly, but when she heard the fairy tale, Alfania, for some reason, kept her eyes round... I listened to Yuki seriously and thought about it.

And Alfania started talking to Potsura Potsura, looking like she had come up with something.

"No way... is this the world of the dead? No, but... right... I see. The souls of the dead floating in the darkness as far as they can see and the souls of the living as they descend under their feet? I mean, this is the afterlife... So, Noon will be dead?

"(This...... should I seriously answer?

Is it good to answer seriously after all? If I answered, I would have answered and caused further confusion... Yuki seemed to have such a glimmer of anxiety, but as it was going to be, Alfania was going to storm out, so she decided to give up and answer the principle of meteor.

◇

"... unbelievable. You're saying it's not a soul, it's just a stone glow? And when it's on fire. What do you mean, the stones burn?

"Insulated compression, you don't know..."

Yuki explained once again to Alfania the principle of meteor. But they don't understand it as expected...... Yuki seemed troubled.

Because although she herself, Catalina, had taught me about shooting stars, she didn't really understand the principles. As for the principle of insulated compression, I had seen that the cotton wool stuffed inside the cylinder burns up by pushing the piston in the gutter, so I could understand that it burns because the heat concentrates... We didn't even know why insulated compression was related to shining shooting stars in places that weren't in the cylinder, and it was only perceived as "that kind of thing".

Incidentally, the reason why surfaces such as shooting stars, hypersonic passenger aircraft, and spacecraft are heated by insulated compression is because the air in the direction of the object's travel is compressed one after the other because it cannot travel beyond the speed of sound, thus storing heat, just like in the cylinder. As a schematic, it may be said that an invisible cylinder is floating along a path such as a spacecraft.

"Monkey Snake Awkward? I don't know...... Beginner magic, huh?

"This way, if you turn down the air, the surface of the object gets hot all at once."

"Hmm, fire magic... And how does that have to do with meteors?

"Uh... I think the meteors are also gnarly"

"... I don't know"

Alfania with her head to say so. Apparently, Yuki's explanation was also responsible for her failure to understand the principles of meteors.