I was walking through my house 1000 years ago, not ancient ruins ...... .

"Hey, hey, Kurt. What did you mean when you said that?
There's so much I don't understand about what you're saying.
Kurt: ...... Mysterious......

　As we walked, the three of them asked me questions in rapid succession.

"I'm sorry I haven't explained it in detail before. I'll explain it a little further down the road.

　It may seem like I'm repeating myself, but I wasn't trying to hide anything.
　I knew you would not believe me if I told you.

　But ...... I had been in contact with the three of them for too long.
　It would be dishonest of me to leave them with no explanation. Besides, the three of them should be able to understand what I'm saying by now.

　With this in mind, I was walking towards a certain place. .......


　A mechanical sound filled the space.


　A mechanical sound echoed in the space.

"Hmm, ......?　What's that sound?

　Lara's gaze wandered around the area.
　They both react in a similar way.

　Eventually.

"Hmm, looks like it's still mobile.


　A huge humanoid machine emerged from around the corner.


　The machine was emitting steam from everywhere, staring at us.
　The three of us widened our eyes in surprise when we saw the machine standing in front of us.

What is this ......?

　Lara approached the machine with trepidation.

"Lara!　It's dangerous!

　The machine started to move on its own and dropped a huge right fist towards Lara.

　Immediately, Marise casts a warding spell in front of her.
　The machine's fist was blocked in front of the warding, and it got some distance from Lara and the others.

　The machine's fists were blocked by the wards, and Lara and the others got some distance away, but in no time, flames and electric shocks shot out from all over the machine and attacked Lara and the others.

Can't the three of you handle this machine yet?

　It's a little overwhelming.

　I put up a warding spell to block the attack and close the distance to the machine in an instant.
　Then I draw my sword from its scabbard and make a single strike.
　In no time at all, the machine was cut in two and the attack was stopped.

What the hell was that?
I'm not sure if it's ...... the gatekeeper of this house?
If so, no wonder he's so strong.

　The three of us looked at the machine that was cut in half and said that in turn.

　But...

"Marlies, no. This is not a gatekeeper of any kind.
"Then what is it?

　Marise rolls her eyes.

　I'm thinking back to a thousand years ago.

"It's just a cleaning robot.
"What about ......?
"It scraps garbage with its fists and incinerates it with fire. Blitz is ...... just an electrical discharge. That's what you'd expect after a thousand years.

　Yeah.
　What I've been fighting is just a cleaning robot.

　But it seems that ...... still needs to be adjusted.
　It's not very useful if it's going to attack us.
　That's the kind of thing that would break down after a thousand years.
　Maybe we should make the recognition system more robust next time.

I'm sorry for the commotion. Let's move on.
"............」」」」

　Hmm?
　The three of them looked dumbfounded.
　They're puckering up their mouths, looking like they want to say something, but they can't seem to get the words out.

　...... Oh well.
　I didn't go into it, but walked away again.

　"Here we are.

We're here.

　The place I arrived at with the others was a large room surrounded by books.

"Kurt, is this ......?

　Lara asks.

"This is my study.
"My study?
"It's as full of books as the school library.

　Lara and Marise roll their eyes.

Even ...... is nice.

　But Cynthia, on the other hand, was enthralled.
　She's a girl who loves books.
　This room, filled with the smell of books, must seem like a paradise.



"You can read some of the books if you want.

　When I urged them, they scattered and picked up their books.

　Here are the books that I had collected little by little a thousand years ago.
　Some of them are called "forbidden books".
　Seeing the number of books in the collection, which must be well over 10,000, I was once asked to donate some of them to the library of the royal capital a thousand years ago. I was once asked to donate some books to the library of the royal capital a thousand years ago.

　I approached Lara first.

"What do you think?

　I approached Lara and asked her, "Well?

　Lara looked at me with difficulty and replied.

I can't read ...... because it's written in ancient characters. But I think I know what it says.
Oh, I forgot about that.

　The book is 1000 years old.
　Of course, it's written in a thousand-year-old language.
　I'm going to cast a translation spell on you three. This way, even Lara and the others should be able to read it.

"Can you read it?
"Well, yes, ......, but I still don't understand it. What's the theory here?

　...... hmm. This is the part about magic strikes.
　Mageki is a technique of putting magic power into a weapon and sending it flying from a medium distance. In some cases, it is more efficient because it consumes less magic power and can be applied more effectively.

It's a good match for the red magic of Lara. I'll teach you slowly.
"The one Kurt uses sometimes?

　I nod.

Yeah.
Was this Kurt's idea?　What, but ...... Kurt's ideas are written in a book?

　Lara says with a confused look on her face.

　In response, I patted her on the shoulder and replied.

It's not me now. It was me a thousand years ago.

　Lara was still moving her mouth as if she wanted to say something, but without waiting for her to say something, I moved on to Marise.

"What about Marise?　Do you understand?
"Yes, yes. It's difficult. ......
Okay. Then you know how advanced the magic and theories in this book are.

　She nodded again and again with an excited look on her face.

It also contains the correct understanding of magic colors. ......!　I didn't see this written anywhere else. Kurt was the only one who knew about it. ...... What the hell is this? ......

　Apparently, Marise understood, too.

　Without answering her question for once, he finally walked over to Cynthia.

"Is it funny?
"Yes. ...... There are a lot of beautiful magic formulas written on it. ...... I've never seen a magic formula like this before. ...... Cynthia, happy. ......

　I looked at Cynthia, her cheeks were a little flushed.
　She didn't look at me, her gaze fixed on the book.


　A few moments later, .......


Kurt, explain it to me.
Lara is right. Where did you get all these books?
Even Cynthia has never seen ...... all of them.

　The three of them came at me and questioned me.

　All the books in this library are a thousand years old.
　Of course, they were written with the correct understanding of magic a thousand years ago.
　I figured that they would have a better understanding of what I was about to say.

　I looked at their faces and continued.

"A thousand years ago, there was a magical revolution. Then, something happened that made that revolution disappear, and here we are.

　That's why the golden color, the strongest and best color of magic, was called 'defective magic'.

　The three of them listened intently to my story.

"And that magical revolution was brought about by me a thousand years ago. I was born a thousand years ago in this age.