The ancient ruins I was walking through my house a thousand years ago, not the ancient ruins I was walking through.

'Hey, hey, Kurt. What did you mean earlier?
There's so much you say that I don't understand.
Kurt ... mysterious ...

　As we walked, the three of them asked me a series of questions as we walked.

'I'm sorry I haven't elaborated before. Let me explain it to you a little further down the road.

　I know I've said it many times, but I wasn't trying to hide it.
　I thought you wouldn't believe me if I told you.

　But........I've spent too much time in contact with the three of you so far.
　It's not a good idea to go on like this without any kind of explanation. I'm sure the three of them should be able to understand what I'm saying by now.

　As I was walking towards a certain place with this in mind....


　Eeeeeeeeeeeeeeeeeeeeeeeeeeeeee.


　A mechanical sound rang out in the space.

''Hmm...?　What's that sound?

　Lara scurries around and lets her gaze wander around.
　They both have a similar reaction.

　Eventually.

''Hmm, it looks like it was still mobile.


　A huge humanoid machine emerged from a bend in the road.


　That machine was emitting steam from everywhere, staring at us.
　The three of us looked at that machine that stood in front of us, and our eyes widened in surprise.

''Eh, this is........''

　Lara approaches the machine fearfully.

'Lara!　It's not safe!

　The machine started to move into one and dropped a huge right fist towards Lara.

　Immediately, Marise put a warding spell in front of her.
　The machine's fist was blocked in front of the ward, putting a little distance between it and Lara and the others.

　But without pause, flames and electric shocks were fired from all over the machine and attacked Lara and the others.

'Are the three of you still unable to deal with this machine?

　It will be a bit of a burden.

　I put up a warding spell to block the attack and close the distance between me and the machine in an instant.
　Then I pull my sword from its sheath and make a single blow.
　In the blink of an eye, the machine was cut in half and the attack was stopped.

''Ow, what the hell was that!
Could it be........that he is the gatekeeper of this house?
Then no wonder he's so strong.

　The three of them look at the machine that has been cut in half and say so in turn.

　However.

'No, Marys, it's not. This isn't some grand thing called a gatekeeper.'
What is it, then?

　Marise rolls her eyes.

　I'm reminded of what happened a thousand years ago.

It's just a scavenger robot.
...What?
'Scrap the trash with your fists and incinerate it with fire. The blitz ... is ... just an electrical discharge. As you can imagine, that's what happens after a thousand years.

　Yes.
　What I've been fighting was just a cleaning robot.

　But it's still in need of some tweaking.
　It's not going to be very useful, attacking us.
　I guess that means it'll break down in a thousand years.
　The next time we make one, we should make the recognition system more robust.

I'm sorry for the trouble I caused you. Let's get on with it.
"......................

　Hmm?
　The three of them look stunned.
　Their mouths are crunching and they seem to want to say something, but they can't seem to say the words well.

　........Oh well, that's okay.
　I didn't interfere with that and started walking again.

　◆ ◆ ...

I'm here.

　The place I arrived with everyone else was a large room surrounded by books.

'Kurt, is this...?'

　Lara interjects a question.

'It's my study, isn't it?'
An office?
It's as full of books as the school library.

　Lara and Marise roll their eyes.

'....but it's lovely.

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

''If you want, you can read a few books.''

　When I urged them to do so, the three of them scattered and picked up the books.

　There are books here that I have collected little by little over a thousand years ago.
　There is also what is called a 'forbidden book' among them.
　Looking at the number of books in the collection, which must be over ten thousand, I said to the library of the royal capital a thousand years ago, "Please donate some of those books! You once asked me to do this.

　I'd go up to Lara first.

What do you think?

　I asked her if she had any questions.

　Then Lara made a difficult face and replied, "I can't read it because it's written in ancient letters.

It's written in ancient script, so I can't read it to begin with. But I think I can understand what is written in it that seems so difficult.
Oh, I'm afraid I've forgotten that.

　It's a 1000 year old book.
　Of course it's written in a language that's a thousand years old.
　You're the only one who can do it. This way, even Lara and the others should be able to read it.

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

　...hmmm. This is where it was written about "Mageki".
　Mageki is a technique of putting magic power into a weapon and flying it from mid-range. In some cases, the amount of magic power consumed can be reduced, and since it can be applied very effectively, it is very efficient.

''The magic strike is a good match for the red magic power Lara. Shall I teach her again slowly?
Is that what Kurt uses sometimes?

　I nod my head.

"Yes,
Was this Kurt's idea?　Eh, but ... what's Kurt's idea of what's in the book?

　Lara utters with a confused look on her face.

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

'I'm not the me of now(...), I'm the me of a thousand years ago.'

　Lara was still trying to move her mouth as if she wanted to say something, but she didn't wait for that to happen and moved on to Marise next.

'How's Marise?　Do you understand?
'Yes, sir. It's difficult, but...
'Right. Then you can see how advanced the magic in this book and its theories are, Marys.

　When I asked her, she nodded repeatedly with an excited expression on her face.

''It also describes the correct perception of magic colors...!　This wasn't even mentioned anywhere in the book. Kurt was the only one who knew about this........

　Apparently, Marise understood, too.

　For once, he didn't answer her question, but finally walked up to Cynthia.

'Is that funny?'
'Yeah ... a lot of beautiful magical formulas written ... the most magical formulas I've ever seen ... Cynthia, happy. .....

　When I looked at Cynthia, her cheeks were slightly flushed.
　She didn't look at me, but instead focused her gaze on the book as if she was devouring it.


　Then a while later.........


'Kurt, hurry up and explain it to me.
'Lara is right. Where did you get all these books from?
Cynthia but I've never seen it all.

　The three of them came over to me with a guffaw and questioned me about it.

　The books in this study are all from a thousand years ago.
　Of course, they are written with a correct understanding of the magic of a thousand years ago.
　I'm sure the three of them will have a little better understanding of what I'm about to tell them.

　I looked at the three of them and continued.

"-A thousand years ago, a magical revolution occurred. And for one reason or another, that revolution was forgotten, and here we are today.

　That's why the golden color, the strongest and highest magic color, was called 'Defective Magic Power'.

　The three of them are listening to me intently.

"And that magic revolution was brought about by me a thousand years ago. I've been living in this era for a thousand years now.