The strongest swordsman was disappointed with the world's too low level and reincarnated into another world.

Me and Celia were coming to Zagil, captain of the Fifth Squad, to get information about Lieutenant Kanon.

Captain Zagil told us that Mr. Cannon was sick and we were able to get a new lead.

"Thank you, Captain Zagil. Thanks to you, I was able to get a clue."

"No, I don't mind. Instead, I might be the one to thank."

"Huh?"

"Originally, the problem that happened in my squad was that I had to clean up. It was my fault that made you guys care. I'm sorry... and thank you for caring about her..."

"Huh? No, no..."

Captain Zagil said that to us as we were about to leave.

From our point of view, I just wanted to do something about Faraes' relationship with Mr. Cannon, so it's unexpected that he would be thanked or apologized for like this.

"... we just want to do something about the relationship between the two of us that was supposed to be close once. So there's no need for Captain Zagil to be like that."

"In the end, that leads to saving Canon."

"Oh, really..."

That didn't change Captain Zagil's attitude.

Then I guess that's fine.

"... this is the first time you guys have told me that she is sick"

"Huh?"

"I had nothing to tell anyone because she was stopping me. Because I had a lot of doubts about myself."

So Captain Zagil mentioned that.

Until now, it seems I have not told anyone about Mr. Cannon's illness.

Indeed, if I had told anyone, it would have been in Faraes' or Celik's or Noir's ears as well.

But then, why did you tell us?

"Then why are you telling us this?

"Because you think you can solve this problem. Different squad, but I expect that."

"Huh?"

Somehow, Captain Zagil seems to be counting on us.

Captain of a different squad, but it is a pleasure to have you say so.

"... By the way, Slade, do you know the library you have in this Knights?

"Huh? Yeah, I've never used that, but I know it"

"Then you should say it. We can spread the word."

Captain Zagil has said that abruptly.

Is this some kind of hint?

Since then, Captain Zagil has said nothing.

The story would mean that this is the end.

"Excuse me, Captain Zagil."

"Excuse me......"

That's why Celia and I left the captain's office behind.

After I get out of the captain's office, Celia talks to me.

"Master, next..."

"Oh, for now, let's go to the library"

The next destination had been decided.

That's the library that Captain Zagil showed us.

So Celia and I headed to the library.

◇ ◇ ◇

Me and Celia were in the library.

Captain Zagil told me to come, but I wonder what there is here.

The library seems very quiet with very few people.

Or is there a person?

"Has Celia ever used the library?

"Oh, yes, I do. When you look into things you don't know, you come and go."

"Then what do you think Captain Zagil meant by that?

"Huh? I don't know... sorry"

"Oh, no, that's fine"

I asked Celia, but she doesn't know the intent of that word in particular.

Then I guess I'll just have to try and be a sickness book, too, as appropriate?

"Ah..."

Celia raised her voice when I was thinking about it.

Because it's a library, or a smaller voice.

What the hell is wrong with you?

"What's up, Celia?

"Master, that..."

"Ah..."

Celia told me, and I noticed, too.

At the corner of the library, there was Mr. Cannon.

Here, I'm finally figuring out Captain Zagil's intentions.

Perhaps, because Mr. Cannon is here, he guided me.

"Shall I speak up...?

"Oh, yeah, I'll try that"

In the meantime, me and Celia decided to approach Mr. Cannon.

Then Mr. Cannon seems to have noticed this one, too, and he calls out.

"Oh? What can I do for you both, in the library?

"Oh, yeah, a little, I wanted to know..."

"Really? There are so many different books here, you'll see. I'm gonna go now, so I'm gonna take my time."

"Ah, yes..."

That's all Mr. Cannon said, he left.

It feels like we left because we're here.

The rest of us, face to face.

"Did they get away with it?

"Sounds like it. By the way, Master, just now, did you see the book Mr. Cannon was reading?

"Oh, I was watching"

"Well, I'll take it."

That's what Celia said, and Mr. Cannon picked up the book he was reading.

The book is of some concern.

"It's an insect atlas..."

"Oh, I'm a little concerned that Mr. Cannon was reading this..."

Mr. Cannon's reading of the insect atlas makes me wonder a little bit.

Maybe Mr. Cannon just likes bugs, but it should be worth a look.

I think so, and I'll open the page Mr. Cannon was looking at.

"Sure, it was this page, wasn't it?

"Yes, it was a moment, but I watched it right. This page."

"A butterfly..."

What Mr. Cannon was looking at was a page about butterflies.

Before and after, various butterflies seemed to be introduced, but what Mr. Cannon was looking at was probably a butterfly.

It is a butterfly that I have never seen.

"Celia, do you know this butterfly?

"Huh? Yeah, Dead and Sick Butterfly" Shhhhhhhhh "...? You've never heard of it... it feels kind of noisy..."

What Mr. Kanon was looking at was a butterfly called the Dead and Sick Butterfly, "Shibi Yo".

It is a butterfly with a black and creepy impression.

In the meantime, look through that butterfly narrative. Then I find the statement I'm interested in.

"This butterfly was given this name because those invaded by the disease often see it before they die... This is..."

"Maybe Mr. Cannon saw this butterfly? So, when my death is near..."

"No, wait...... but it is a kind of urban legend. Once, in the town where this butterfly lives, the disease became endemic, and at that time this story was made… I mean, it doesn't seem to have anything to do with the time of death"

"Well, then, is there a problem..."

Perhaps the Dead and Sick Butterfly "Shibiko" has no basis whatsoever because of its appearance, just because it is said that way.

But the thing is, Mr. Cannon was looking at this page.

"No, maybe it means that Mr. Cannon's illness is progressing that far... so I saw this butterfly, and I was curious to find out..."

"Oh, no! So, is Mr. Cannon going to die?

"It's not like that... I don't know..."

Perhaps Mr. Cannon's illness was quite progressing and he examined the drawings by looking at the butterflies.

Still, Tsujitsu does fit. It's just uncomfortable there.

"You're so sick going on, you're still working normally in the Knights... isn't that kind of weird?

"That's right..."

Assuming Mr. Cannon is seriously ill, he shouldn't even be able to come here.

And yet, I keep working all the time. That's where I got caught.

"... let's keep this in one corner of my head for now. Let's go back."

"Oh, yes, that's right..."

In the meantime, we have to go back once.

Because it's always time to go home.

Even if I were to look into it yet, I would have to consult with Faraes.

So me and Celia went to Faraes.