"Let's see... this is... mm, no hall?"

  Having asked Norgaar to relay a message to Rashion and returned to Earth, Amashiro was browsing various architecture-related sites on his computer, hunting for 'Western-style mansion' materials. Though he'd considered samurai residences and shinden-zukuri thinking they might be interesting, the style differed too much from the surroundings, and above all, Amashiro himself felt it would be uncomfortable to live in, so he'd given up.

  Even saying noble mansion, honestly with only vague images, no concrete image came to mind. Though he'd considered requesting a professional architecture firm... if he requested floor plans for a 'noble Western-style mansion,' cost aside, his sanity would be questioned.

  "Ugh, nothing promising... even saying mansion, only modern ones...

  Ah, this..."

  While searching various things, Amashiro noticed a model of a certain country's presidential palace.

  Curious, he investigated and found various types available—from papercraft to architectural model kits, even 3D models.

  "Hmm... this...

  Isn't this good?"

  Searching more thoroughly, he found some even reproducing the interior structure, so Amashiro decided to 'borrow' this.

  Though directly building it on Tusita probably wouldn't be problematic, wanting to adjust room arrangements and modify the exterior slightly, Amashiro purchased that 3D data and decided to tinker with it himself.

  "Concentrate living spaces on the second floor... reception spaces on the first floor and separate party hall building...

  Another separate building for servants' work space... huh? Assuming servants?

  ...Well, I might need at least a maid to help with cleaning...

  No wait, could this become a bigger household than I imagined?"

  Oddly insensitive Amashiro finally realized here that a 'mansion befitting noble prestige' would have incomparably more difficult housework than his 3LDK apartment.

  "...Does having noble status mean employment responsibilities too...

  Mm, that's noblesse oblige, I suppose.

  ...Wait, why am I posturing? Sigh"

  This meant only two choices—manage that grand mansion alone, or earn enough money to hire servants—either way would be tough, Amashiro thought.

  ...He hadn't yet realized that just selling honey alone could make him a tycoon.

  "Then I'll need to prepare servants' rooms too...

  Ah, before that, I want to use electrical facilities in that world too, is there something?"

  While researching various things and investigating what occurred to him, the sun had set before he knew it.

  "Servants? Of course."

  "Thought so?"

  "Yes, Father.

  Staff for Father's personal care, a butler to supervise housework and lead servants, maids for housework, a housekeeper to manage maids, cooks, gardeners, coachmen, footmen..., mansion security..."

  "Wait wait wait, that many?"

  "My, this is already the bare minimum?

  Since Father is single, you don't need wet nurses, nannies, or lady's maids, so it's reduced by that much."

  "That's right, Father.

  You said Chikyu has no class system, and your residence isn't large, so Father alone was fine, but in this world, if you're noble, employing personnel befitting that status is virtuous, and not doing so is considered stingy."

  Though he'd vaguely realized it, it seemed accurate.

  "Then I must prepare servants' living quarters too...

  Understood.

  Sigh, personnel costs will be terrible..."

  "What, for now royal stipend should cover it.

  Once the business gets going, that'll be pocket change."

  This story has been unlawfully obtained without the author's consent. Report any appearances on Amazon.

  Though Rashion boasted so grandly, Celeste couldn't feel reassured.

  "...Wait, stipend? What's that?"

  "Hm? Ah, right.

  Royalty without fiefs are provided a fixed annual stipend.

  It becomes 'declined' form if granted fiefs or business benefits."

  For Celeste who'd been troubled about having no assets in this world, this was truly welcome news.

  Of course, that didn't mean he could keep causing trouble indefinitely, so he had to advance that monopoly business plan.

  "Ah, Father, you'll prepare rooms for us too, won't you?"

  "Eh? No, it's right near the royal palace, and isn't it presumptuous for the Queen to stay over?"

  "What are you saying?

  Since it's Father doing it, you're planning to fill the mansion with Chikyu's convenient tools, right?"

  "...Tch, found out.

  Fine. I'll additionally prepare one separate 'annex' exclusively for the royal family."

  "I love you, Father."

  Though he felt somewhat outmaneuvered, since they wouldn't keep quiet after seeing the mansion's facilities anyway, preparing in advance wasn't bad, Celeste thought.

  "So, when do you plan to start construction?"

  "Ah, about that...

  Since I'm 'making' it there, probably 2-3 weeks... here 2-3 days? I think it'll take."

  "That's quite fast... wait, huh?

  'Making' it? Not 'building'? And over there?

  Even for Father, bringing a built mansion would be difficult, wouldn't it?"

  Rashion asked back in surprise.

  Hearing 'bring a house' naturally produced this reaction, and since he didn't know what Celeste was currently scheming, he wasn't exaggerating.

  "About that~

  Keep it a surprise for the day.

  Well, I'll arrange preparations and come again."

  Saying this, Celeste vanished through a gate to Earth.

  Three days later.

  "No, what is this?"

  Even Celeste couldn't hide his bewilderment.

  Having reported to the King 'I'm going to build a mansion,' he was told to wait about an hour. Wondering what that meant, he returned to Earth once, waited 8 hours with prepared items, then opened a gate to the construction site—and Celeste wanted to doubt his eyes.

  Somehow, the King, Queen, and Princess had arrived.

  Beside them, the Prime Minister had come too.

  Six ministers stood around them.

  Especially Military Affairs Minister Marc Mengen—hearing someone was moving next door, he couldn't not come.

  The Court Mage Chief and her husband the Magic Academy Headmaster had come.

  With the nation's key figures gathered, attendants and guards couldn't not follow.

  With the royal family and all ministers present, nobles from the noble district couldn't not come greet them.

  Plus, mages and Magic Academy students who'd followed the Mage Chief and headmaster couple.

  Somehow, it had become a grand gathering.

  Anyway, he needed to ask what this was about.

  "Your Majesty, may you be in good spirits.

  ...So, Your Majesty and everyone, for what purpose have you all come here?"

  "Mm, Royal Father, you see.

  I was curious how you'd build a mansion."

  "Yes."

  "So, when I said I'd go inspect... the Prime Minister and all ministers also said they must..."

  "I see."

  "...Thinking you'd feel awkward, when I said I'd go alone, the Queen and Princess wouldn't listen..."

  'Then sneak out of the castle alone!

  There's incognito visits!'

  ...He said internally, but Celeste well understood why that couldn't happen.

  "Understood.

  But then, is the royal castle now empty...?"

  "No, my reliable younger brother remains guarding it."

  "I see."

  Probably said 'I want to see too!', Celeste felt a bit sorry for Norgaar.

  "I can't help feeling this became a grand ceremony...

  I'm honored by Your Majesty's and everyone's attendance.

  Though it may be an unseemly construction scene, shall we begin soon?

  My apologies, but could you step back a bit just in case?"

  As they stepped back as Celeste said, several among the mages and magic students behind the crowd could be seen taking out telescopes.

  "Really, it's not a show."

  While muttering, Celeste took several cardboard boxes and a shovel from the gate he'd left open, then closed it.

  "...Royal Father? Didn't you say you'd 'make' it and bring it?"

  "Yes. I've 'made' it and brought it.

  Here."

  While answering, Celeste took something from the cardboard.

  "A small mansion?"

  "Yes. The 'model' of the mansion to be built."

  Then, suppressed laughter leaked from among the nobles.

  Though letting slip laughter before the King was disrespectful, perhaps unavoidable in this case.

  The new Regis said to have come from another world suddenly said he'd build a mansion, and even the King had come.

  Before him, taking out that small 'model' mansion—being thought 'what farce is this' was unavoidable.

  However, only the couple standing at the nation's magical pinnacle realized what he'd do with that 'model' and what it meant.

  "Your Majesty, permission to speak."

  Iare Nairan petitioned the King.

  "Permission granted."

  "It's an honor.

  Regis Celeste. Are you now about to do what I'm imagining?"

  "As expected, Comis Nairan. Sharp perception."

  Hearing this, the mage couple's eyes shone sharply.

  "If you don't mind, may we observe closely?"

  "Well...

  Just you two should be fine.

  But please don't stray too far from me."

  "! Thank you!"

  Seeing the two excitedly rush to Celeste upon hearing his consent, questions spread among the nobles.

  What was making those two at magic's pinnacle frolic like children?

  However, the nobles hadn't noticed the court mages behind them and Magic Academy students wore the same expressions.

  Unconcerned with such a crowd, Celeste dug the ground slightly with the shovel he'd brought and began assembling the mansion model separated into module units, taken from the cardboard.

  "What precise construction. Did you make this yourself, Regis?"

  "Ah, no.

  But explaining would take a while, so may we do so later?

  I'd like to proceed with work now."

  "Of course. Please, go ahead."

  Having placed the assembled modules in the hole he'd just dug and buried the lower half or so in soil, Celeste had the two step back, set up his smartphone on a tripod, and began filming. Seeing this, Iare's eyes—who hadn't yet seen a smartphone—sharpened, but she said nothing.

  "Then, I'll begin."

  Normally nothing was needed, but wanting to vary things just for today, Celeste deliberately began chanting solemnly.

  "Thou, built from nothing

  I command thee

  Break and cast off thy false shell

  Become thy true form!"

  (Translation: It's a model made with a 3D printer. This will enlarge and become real.)

  BOOM.

  "Wh-what?"

  At the sudden roar, commotion spread.

  BOOM BOOM.

  The moment another roar echoed, brilliant light momentarily enveloped the surroundings.

  "Wh-what is...

  ...Wh-what is that?"

  "Kyaaaah!"

  "What in the world..."

  After the light vanished.

  Before the gallery who'd been surprised by the sudden light and made a commotion, even forgetting they were before His Majesty.

  Where just moments ago had been empty land, a massive pure white mansion towered, accompanied by a well-tended wide garden and iron fencing.