“Ouga-sama, it seems we have an adorable guest.”
Her whisper nearly made me trip over myself, but I managed to keep my composure at the word “guest.”
“A guest? I don’t recall any appointments… Do you know who it is?”
“Yes. They’re nearly here. I’ll step aside for them.”
“Wha—?”
Who could possibly be someone Alice would allow this close?
The moment her comforting presence pulled away, a heavy thud hit my back.
I spun around—and there stood a girl I hadn’t seen in ages.
Ah, right. I knew from her letter she was coming home, but I never expected her this soon.
“…You’ve grown, Celishia.”
“Yes! It’s been so long, Ouga onii-sama!”
The adorable guest Alice mentioned was none other than my beloved little sister—Celishia Vellet.
She turned ten this year, but her clingy nature hadn’t changed a bit.
She’s always been like this, sticking to me no matter what.
“Onii-sama… Ahh, it’s really you…”
Celishia buried her face in my chest and nuzzled aggressively.
“Hey now, Celishia. You’ll mess up your neatly kept hair.”
“Fufu~ Right now, being reunited with onii-sama is far more important!”
My sister has always had a knack for saying exactly what makes someone happy.
As I patted her head affectionately, a questioning voice rose from behind.
“Heyyy, Master. Hate to interrupt the reunion, but mind introducing us?”

“Um, me too, please…?”
“Hm? Oh, right. Alice met you when I hired her, but you two haven’t seen Celishia yet. Can you introduce yourself?”
“Ughhh, onii-sama! Celishia isn’t a child anymore! I’m a proper lady now, so don’t baby me so much!”
Pouting cutely, she huffed—but the moment I apologized, her mood instantly brightened.
Seems she was just teasing me.
My little sister had grown into quite the mischievous imp.
Overcome with affection, I slipped an arm around her waist and lifted her up.
Even with only one arm (my left, since my right is gone), I’d never let something like that stop me from holding my adorable sister.
This is exactly why I built up all this muscle.
Honestly, though, Celishia’s waist was worryingly slender—was she even eating properly?
For a brief moment, her gaze flickered toward my missing right arm, but she already knew the details from my letters. She quickly bloomed back into a smile.
“Ouga onii-sama~! Do you know how much I’ve waited for this day?!”
Still in my arms, she rubbed her smooth, pillowy cheeks against mine—just like always.
Her spoiled side hadn’t changed either.
Studying abroad in the Empire could’ve altered her personality, so I’d been a little worried…
But clearly, I’d overthought it.
As if my amazing little sister could be swayed so easily! Forgive me for doubting you, Celishia!
“Heh… I feel the same, Celishia.”
“Mmm! Onii-sama, I’m so happy!”
Her sparkling eyes, well-defined nose, and soft pink lips—
No doubt she’d charmed countless boys in the Empire with that face. Yet since childhood, she’s always clung to me, the ultimate “onii-sama” girl.
She copied everything I did, followed me everywhere.
I even bathed with her and shared a bed until she got too old for it.
How could I not adore her when she showers me with so much love?
“Alright, Celishia. I’m putting you down now.”
“Muuu… I wanted to stay like this longer…”
God, she’s too precious.
Reluctantly, I set her down.
I even told Father I’d have a say in her future marriage. No way I’d hand her over to some guy I don’t approve of.
“Fufu~ Onii-sama, you still love stroking my hair, don’t you?”
I hadn’t even realized I’d been doing it while mentally raging at her hypothetical suitors.
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The silk-like texture of her maid-tended hair was beyond luxurious.
As I fiddled with a lock, she squirmed cutely.
“Sorry. Your hair’s just so beautiful, I couldn’t help it.”
A half-truth. It was stunning—she’d kept this style for years.
“Ehehe~ I’m so happy onii-sama praised me!”
How is she this effortlessly charming?
Celishia somehow embodies the “ideal girl” I once described to her. Maybe I spoil her too much because of that.
(Let me be clear: I’d never feel anything inappropriate for my blood-related sister.)
“…Wait. Are we just gonna ignore the introductions you promised?”
“Now, now, Yueri-san. I doubt they’re doing it on purpose.”
“Ouga-sama, Celishia-sama. As touching as your reunion is, shouldn’t you greet Lady Leiche and Yueri-sama first?”
“Oh! My apologies! I was so overjoyed I completely forgot! Please forgive me!”
Celishia hastily bowed.
“It’s a pleasure. I am Celishia—Celishia Vellet. Eldest daughter of House Vellet and Ouga onii-sama’s sister. I hope we’ll get along.”
“Name’s Yueri Luludahn. Master—your brother’s personal mechanic. Don’t worry—I’ll take good care of his precious arm.”
“So you’re onii-sama’s mechanic! I’ve heard you’re brilliant! They say you helped him break through in that last incident!”
“Ahaha, flattery won’t get you anywhere, little lady!”
Yueri seems to be in a good mood after being praised unreservedly by Celishia.
The Vellet Family prides itself on being second to none in the kingdom when it comes to handling information. If something happens to one of their own, word spreads quickly among the family. And if it’s something as significant as losing an arm in a battle against a demonic dragon, all the more so.
In fact, Celishia sent a worried letter even before I could deliver mine—just so she wouldn’t make them anxious. Back then, I couldn’t help but let out a wry smile.
For some reason, she also brought up the matter of me marrying Mashiro and the others… No doubt Morina was the one who leaked that information.
Ever since I brought Mashiro and the others here, she’d been more high-strung than usual…
“Leaving Encarton to serve onii-sama… House Vellet won’t regret this! Please take good care of him!”
“You got it! I’ll craft the best damn arm for this boy!”
“That’s so reassuring! And, um, the one with light-blue hair…?”
“H-Hi! I’m Mashiro Leiche! I-I’m close with your onii-san, and, um, well…!”
Mashiro, standing stiffly with her back straight, was visibly flustered—her nervousness making her efforts fall flat.
Come to think of it, I had told Mashiro before what kind of person Celishia was, but in this situation, that hardly mattered.
For Mashiro, this was her first meeting with the family of the man she would marry in the future. Expecting her not to be tense… was utterly impossible.
And above all, Celishia was making no effort to hide just how much of a bro-con she was. Mashiro would naturally want to avoid leaving a bad impression on such a sister.
Easing her nerves was my job now.
There was no need to dwell on negative possibilities anymore—no reason to dredge up unpleasant memories from my past life and wonder if she was secretly looking down on me.
I stepped closer to Mashiro and took her hand, letting our joined fingers speak for themselves.
Then, holding them up for Celishia to see, I properly introduced her—leaving nothing unsaid.
“Celishia. I think I mentioned her in my letters—her name is Mashiro Leiche. She’s my classmate, someone who’s supported me countless times… and in the near future, she’ll be my most important person—my wife.”
“Ouga-kun…!”
“Hm? Did I say something wrong?”
“…N-no! You’re right… absolutely right!”
At my declaration, Mashiro’s face turned bright red, and her eyes glistened with just the faintest hint of tears.
Though the one hearing this was my sister—family—this was the first time I’d ever introduced Mashiro to anyone as my future wife.
My love for Mashiro is real, and she must have sensed that our relationship had already changed from what it once was.
Not wanting to embarrass me, Mashiro quickly wiped her eyes and turned to face Celishia.
“I-I’m sorry! Let me correct my earlier greeting…! Ahem! Nice to meet you! I’m Mashiro Leiche! I’ve sworn my future to your brother! I may be of common birth, but I’ll do my absolute best—please take care of me!”
Unlike her earlier flustered introduction, Mashiro now spoke clearly, brimming with confidence.
……For a commoner to marry into a ducal house was likely an unprecedented event in history. Knowing this, Mashiro deliberately mentioned her background out of consideration.
Celishia, fundamentally, shared the same values as me and our father—talent mattered more than lineage.
So, Celishia wouldn’t care that Mashiro was a commoner… but how would she react?
“…Yes! Nice to meet you too, Leiche-san!”
……Phew. Good. It seems she accepted her properly.
Internally sighing in relief, I glanced at Mashiro beside me.
She too had placed a hand over her ample chest, letting out a small breath of relief.
Our eyes met, and we couldn’t help but smile.
“…By the way, Onii-sama. Forgive my rudeness, but when I hugged you earlier, I noticed a faint scent of sweat… Have you not bathed since your training?”
“Wha—!?”
The bomb Celishia dropped made me stagger back.
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