“Th, this is 3,000 meters high?”

I asked back, my voice trembling. The words were so ridiculous that I couldn’t think straight.

“Yes, Master. This castle is currently operating at an altitude of 3,000 meters above the ground.”

The shaking that we had just experienced was probably due to the castle’s flight into the sky.

And so….

“We came here from that transfer magic circle. Can we activate that thing now?”

I was worried about Serena and Alicia, who I had left behind in the Evil God’s castle.

Because I don’t know where we are and we need to go back.

“Please wait for 2 hours, 35 minutes and 19 seconds for the emergency maintenance to finish.”

“E, emergency maintenance? Is there such a thing?”

Alice had a drawn out look on her face, but probably she won’t come back soon.

“Well, it looks like there’s no point in panicking for now. Could you tell me about this castle in the sky?”

If I could go back in time, it wouldn’t be the worst situation. I decided to ask a few questions.

“I see… The legacy of the ancient magic civilization…”

It seems that 10,000 years ago, there was an advanced magic civilization.

It seems that in that era, the human race ruled over all races, and there were vehicles that could fly in the sky, artifacts that could control the weather, and many other items of great power that we cannot imagine today.

However, it seems that this civilization was destroyed for some reason.

What could have caused the destruction of such an advanced civilization?

I looked at Alice and saw that she had a serious expression on her face. She’s read a lot of literature, so I’m sure she has an idea.

Anyway, the voice replied that this castle is a magical device that is outstanding among the civilization of 10,000 years ago.

“By the way, you’ve been answering me for a while now. What kind of being are you?”

It’s obvious that they’re answering our questions, so it must have some kind of consciousness.

“I am the artificial intelligence that controls all of the devices in the sky castle. My official name is Expellius.”

“All right, I’ll call you Ex then.”

“Is that… my name?”

“Yes. It’s hard to talk without you having a name.”

“I understand. I’ll register my name as Ex.”

I don’t know if it’s happy about it, but it registered the name, so I’ll call it Ex from now on.

“By the way, this sky castle works, right?”

If the legends are true, then it should be able to fly. I’m listening with anticipation…

“Yes, you will need three keys in total to move the castle.”

“So… you can’t move it without them?”

I hadn’t expected to be able to move it unconditionally, but it didn’t seem to work out so conveniently.

To my dismay, Ex continued it’s explanation.

“The first key is the Emperor’s Pendant, which activates the Sky Castle. This is the reason why the entire facility is filled with magic power and I am able to move.”

“I see…”

The magic circle that brought me here didn’t react when I got on it, but it started to glow when Alice came, it might be necessary for me to get to this room.

“Y, you gave me such an outrageous gift so easily?”

“No, I didn’t expect it to be that big of a deal.”

Alice also noticed this, and her cheeks tensed up. She had no idea that the item she had been gifted was the key to activate this thing.

“What are the other two?”

I asked, to which it simply replied.

“The other two are the Ring of Gospel, which provides a barrier to the Sky Castle, and the Wall Breath, which controls the Sky Castle.”

Alice and I looked at each other with a subtle look on our faces.