"Let's start by talking about how the world works."

With a coffee cup in one hand, Mr. Liberl cut it out that way.

"There's not just one 'world' first. There are worlds where we are, where you are, and many other worlds. They are neighboring and overlapping, and that is what exists indefinitely."

"Parallel world...... is that like a parallel world?

"That's just one world branched apart. The big book is the same. A different world is another world that is completely different from a parallel world. Well...... parallels the world with the various possibilities that arise in the process of one human being growing up. I wonder if someone else in red is different from me."

"Ah, if you say so, you might somehow understand..."

Well, there's our world, and there's a world where Mr. Liberl lived, and it wouldn't be weird to have more.

Then the mayor opens his mouth.

"Hmm, is that like pluralistic cosmic theory?

"Mayor, what is it?

"It's one of those theories in theoretical physics. If you chew it up and explain it, there is a world that is the answer to all the possibilities that Non and others think about. Infinite possibilities are proof of an infinite world."

"Ha ha...?

Fujita doesn't seem to be coming with a pin, but Liber leaks his breath.

"That's an interesting argument inside. I'd like to hear more about that later."

"You can have as much as you want after this is over."

"That's good. I promise. Well, you don't have to think hard. In short, there are many worlds. That's all."

That's what I'm talking about.

Let's not put in the scratch that it would be the mayor or Mr. Liberl who deliberately likened it difficult......

"There are multiple worlds. Those worlds do not interfere with each other by nature, nor do they realize their existence. … with just one exception."

"Exceptions…?

"Yes, and that's one end of the commotion."

Mr. Liberl separated the words once there,

"Life expectancy exists in the world. Just like the creatures."

"Lifespan......?

Mr. Liberl snorts at me whining back at the parrot.

"Yes. The world also has life expectancy, just as people's lives are limited. Literally the" end of the world "one. It's like if the end of the world were near, you could notice the existence of other worlds. I don't know why."

To the words, my surroundings flaunt.

Yuzu and Rokka raise their hands.

"The... what happens when the world reaches life expectancy?

"Naturally, it will disappear. Take the life, the continent, everything that's in it with you. Oh, don't worry. At least because 'this world' is unlikely to reach life expectancy right now.... Never."

"How long is the world's life span?

"Come on? You won't be down for hundreds or trillions of years at least. At least it's a lot longer than a man's life."

You felt anxiety about Rokka and her surroundings, Liber adds immediately.

"How does that connect to this one?

"Don't rush me. I'll explain. But before that,"

Mr. Rivel drinks up his coffee at once.

"Can I take your place?

"Oh, yes."

Immediately pour the coffee from the pot where the fresh water chief was by the side of the room and place it in front of Mr. Rivel.

Apparently she liked Coffee in Koch's world.

Take a sip and exhale satisfactorily.

"… our world was experiencing life expectancy. It was supposed to vanish and be attributed to nothing. But I found a way to avoid its extinction.... thanks to someone."

Just a little bit Mr. Liberl gave me a look I might miss somewhere.

"He realized that our world was close to life and that there was another world besides our own. And she found a way to do it. The only way to save our world."

"... No way"

Swallow your breath.

Somehow I could have expected her to say it.

"Yes - that's the fusion with another world. She's trying to merge your world with ours and extend it."

――

There were no words.

Everyone has the look on their face that they said they couldn't believe.

"That sounds like a hell of a story, doesn't it? In fact, I couldn't believe it either. The other world? The end of the world? is too absurd to make sense."

But Mr. Liberl goes on.

"... that's not a lie. When I found out it was true, I trembled with fear. I don't want to die. I thought from the bottom of my heart I didn't want to disappear."

My hand with the snail and the cup was shaking.

Hurray and breathe, she opens her mouth again.

"So - apologize first. The circumstances of our world have brought you into our world.... I'm so sorry"

That said, she bowed her head deeply.

The silence fills the meeting room.

Everyone had a bewildered look on their face, staring down at her.

With the body I finally said, Nishino opens his mouth.

"I mean, what? You mean our world just got caught up in your own convenience?

"... you're right. Occasionally the world that was near our world was chosen. The world you live in."

Gatta! And he stood up, and as he approached Mr. Liberl, he grabbed up his chest.

"Don't be ridiculous! I got caught up in that unsolicited convenience, and what do you think we... Roppo and Ono saw!

"... I don't have a word to give back."

Normal calmness hisses, and Nishino shouts, trembling in anger.

In contrast, Mr. Liberl lay down his face looking really sorry.

"But you know what... I had no choice. There was only one way for us to do that. To survive. Or do you want me to shut up and accept death? That's what you're trying to tell me to die on your own because the world is doomed? Even though there's a way that might help?

"So! To that end..."

"... yes, that's why our world 'chose'. We made choices to survive by involving you in the world."

"Huh...!

Nishino releases his hand with an indescribable look on his face.

"... I'm so sorry for you guys"

"... No, I'm sorry this one got hot"

Nishino, you go back to your seat.

It's the usual behavior of Nishino-kun.

That must have been a shock to him, too.

(... To be honest, I just swallow the situation the best I can)

... Ichinose, who sits next to him, also says, "Aww..." He's been stirring coffee with a spoon and no sugar or milk, and signs of upset come from the 'shadow' at his feet.

"... one thing, I want you to hear"

The mayor raises his hand.

"Well... who are the people who noticed the world's weirdness? She said - but what if...?

Everyone's gaze concentrates on Mr. Liberl.

But she shook her head to the side.

"... no, it's not me"

"Then who?

"My master."

"Master?"

"Yes. My master was such a wonderful person that no one in the world I was in didn't know. The life expectancy of the world and the way it blends with the other worlds were all found, devised and created by the master. At the time, I was a disciple. I was helped somewhat, too. Honestly, I had no idea what I could do to come up with a system like this. Really, indisputable genius, that man..."

"Right..."

"Master's system was perfect. (ii) allowed the boundaries between the worlds to merge as if they had been so from the outset, without distortion. We have prepared everything so that our world and the people of this world can coexist so that there are no contradictions in the environment or in the various laws..."

So Mr. Rivel bit his lip.

For the first time, that expression, which he spoke pale, was distorted.

"The fusion of the world was to take place only moderately. Before the world got mixed up, we were supposed to be able to make contact with each other and ask you for the salvation of this world. To reduce the confusion a little bit. At least that's what my master was programming."

"Hey, give me a minute"

I raised my voice unexpectedly.

"Isn't that a little strange? You're conflicted. The monster showed up all of a sudden, huh? Besides, there are no other people in the world but Mr. Liberl."

That's all I said, I stopped my voice.

I had to stop it.

Because Mr. Liberl's face was more distorted by hatred than ever before.

Everyone swallows their breath for that extra force.

"Yes, you're right. There are no 'otherworlds' but me in this world right now. Why do you think that is?

……

"Didn't you think it was weird? Why did only the monsters show up? If the two worlds really merged, people, the environment, the continents, the objects, the buildings would be in this world, right?

"It's..."

You're certainly right if you ask me.

If this world is a world where the two worlds mix, why did only the monsters appear in this world?

If people from other worlds like Mr. Liberl showed up with us, we could have taken care of the monster sooner, and reduced the damage.

Well, it's like...

…………

It's like... what?

An unpleasant feeling crosses the back of my brain.

- so that there are no contradictions in the environment or the law?

With that said, the day the monster showed up, all the electricity, internet and infrastructure relationships were out of use.

The information was completely cut off and people were under threat from the monsters without being able to keep in touch with each other at all times.

Had they all been available, the damage would have been contained more than it is now.

The militia, the government, and the nations could have done more together.

But what if they were all done 'intentionally'?

"No... but no..."

Information combines in my head and guides me through one answer.

A chill runs on his back and makes a sound when his heart is bulky.

If you look at the mayor or Nishino, he covers his mouth with his hands and blues.

We both probably came to the same idea as I did.

"Correct."

Mr. Liberl opens his mouth, as if he had read my thoughts.

"Most of you are right."

……

"The appearance of the monster was intentionally manipulated. By the hands of the rest of us."

"Huh...!

"My master was going to build a perfect system. But the people dealing with it weren't perfect. On the contrary, he was terribly selfish and stupid..."

Mr. Rivel looks up at the ceiling and exhales softly.

"They saw this world as a new place for them. And judged the people who live here to be inferior natives. So I tampered with my master's system and regulated to transfer only the monsters to this world first. Kill each other, reduce their numbers, and adjust to make them more habitable and manageable."

What the heck is that...

Well, then, it's like...

"Well, no way... what you said about 'enemy'..."

"Yes. That's the inhabitants of my world - the otherworlds. It is the undisputed 'invader' of this world and your enemies to defeat"

No one in the conference room could open their mouths to her words.