After flying for a while, I began to see a mountain that looked like our destination, but Frea-san’s home was different from what I had expected. Rather than a house, it was more like a castle…… or rather, a fortress. Partly due to being nestled against the mountain, it had this sturdy atmosphere.

[Errr…… Is that the place?)

(Yeah. That’s the home I use in my human form. The entrance to the one I use in my dragon form is up to the left of that home.)

[Ah, that big cave-like structure, right? I see…… That said, even the home you use in your human form is incredibly large. Just from looking at it, it looks like a fortress.]

(Yeah, I get what my comrade is trying to say. But considering that I sometimes land in my dragon form and then transform into my human form, it’s more convenient to have a building like that.)

I see, now that she mentioned it, that does make sense. If she’s moving in her dragon form like now, landing on the roof and then transforming into her human form inside her home, she’d need a roof big enough to accommodate her 5-meter-long dragon body. Overall, it’s probably more convenient to have a larger residence.

(Although it may appear massive at first glance, about 80% of it is a facility for training, so the living space isn’t as large as it seems. I’m the type who likes to try everything at least once, so I’ve equipped it with training equipment and facilities from both the Human and Demon Realm, from all over the world and from different eras.)

[That’s very much like Frea-san. In that case, you’d definitely need a lot of rooms, ending up looking like a gigantic gym.]

(Fumu…… My comrade, forgive my ignorance, but what is this gym?)

[Oh, it’s something from my world…… A facility where members can use equipment to work out and strengthen their bodies.]

Frea-san seemed interested in the word “gym,” so I gave a brief explanation about the sports gyms I knew.

(I see, instead of preparing the equipment and space yourself, you pay money to use a place that already has those training equipment set up…… I see, that would indeed reduce initial investment costs and make training more accessible…… That’s brilliant. Providing such a place for those with ambition but without wealth…… This is good information. I’ll keep this in mind for the future.)

Frea-san appeared quite intrigued by the concept of a gym, and I had a feeling that she might actually build one at some point. The lack of gyms in this world was probably due to the fact that public transportation, like trains, wasn’t as developed, making it somewhat difficult to travel long distances.

So, I think it would be highly practical for Frea-san to create a gym for her subordinates. Many of the Dragons can fly, so accessibility wouldn’t be much of an issue.

As we continued our conversation, Frea-san landed on the roof of the fortress-like house. There was a figure on the roof, a woman who appeared to be one of Frea-san’s subordinates. She waited for Frea-san to lower me down and transform into her human form, then quickly bowed her head with great enthusiasm.

[Thank you for the hard work, Big Sis!]

[Yeah, is something the matter?]

[I’ve brought the item you requested, Big Sis! It’s finished!]

Frea-san’s subordinate…… or rather, she felt more like her underling than a subordinate. Is it because of Frea-san’s outfit that she kinda felt like the leader of her own delinquent group?

Anyhow, after discussing something with Frea-san, the subordinate noticed me and bowed.

[Oh, you’re here too, “Big Bro”! Thank you for the hard work!”

[Eh? H- Hello…… Umm, “Big Bro”?]

[Since you’re Big Sis’ comrade, you’re like the Big Bro to us!]

[I- I see?]

Somehow, I’ve acquired another strange nickname. While I did wonder why I was being called “Big Bro” just because I was their Big Sis’ comrade, I couldn’t help but nod in response to her loud and energetic demeanor.

Well, I suppose adding one more nickname at this point doesn’t make much of a difference……

<Afterword>

Serious-senpai : [As expected of the guy who was called “Human-san”, “My child”, and even “My God”…… His outlook in life is on a whole different level.]