How Using My Oppai Skill to Enlarge My Sister’s Breasts Led to Building a Harem - Chapter 51
Chapter 51
I’ve truly united with my sister, Ai, in every sense. And it’s all thanks to the woman standing before me now.
“It’s been a while since I’ve come here,” she muses.
“Haha, since the first time we met, right?”
“Indeed. Come now, husband, hurry and put it in♪”
“Got it. Kuu, feels so good…!”
This is the palace of the Waheide Republic—the throne room, no less. Lining the chamber are countless female retainers, Rosecia’s loyal vassals.
“Ohh♡ As expected, your cock is exceptional♡”
“Your pussy’s perfect too, Rosecia…!”
In full view of this audience, we bare our genitals, locked in passionate intercourse. Why? Because it’s the condition Rosecia set.
“Sit there,” she commands.
“This is the throne, right? Only the king can—”
“I say it’s fine.”
“…Alright, here goes.”
At her urging, still connected, I lower myself onto the throne.
A murmur of astonishment ripples through the crowd.
“Listen well, all of you. This is my husband♡”
“Ugh!!”
Rosecia tightens her vagina, milking my semen.
“Being my husband means he’s second only to me in this land.”
“Wha…?”
She never mentioned that.
“What, dissatisfied?”
“No, it’s not that—”
“If you want, I’ll cede the crown to you.”
The murmurs swell into a roar of shock.
No wonder—offering the throne is no small matter. But—
“I’ll pass. I’m not cut out for that.”
“Kukuku, knew you’d say that♪”
I know my limits. I’m not clever or commanding like Rosecia or Miyabi-san.
“Still, I think you’ve got potential.”
“Really?”
“At least you’re honest and listen well.”
“Hmm.”
That’s just my inexperience, soaking up their teachings.
“That’s crucial. You may not be a great king, but you’ll never be a tyrant.”
“Uh, okay…”
Is that good or bad?
On the throne, under the retainers’ gazes, I have sex while being lectured on royal duty.
(Waheide’s called a free country, but this free…?)
Royal copulation is sacred, a ritual to proclaim me as the queen’s consort.
“Besides, uun♡ This beats any ordinary chair, doesn’t it?♡”
“I’m a chair now…? Ugh!?”
Another ejaculation.
“Don’t like it?”
“Kuh, ah… It’s an honor…!”
If it feels this good, I’ll be her chair anytime.
But more importantly—
“Thanks for granting my request.”
“Kuku, a simple matter.”
The request was my marriage to Ai. Impossible in Japan, but here, it’s different.
“All I had to do was permit it.”
“Haha, true.”
Blood ties don’t matter here. In this polyamorous free nation, marriage is a loose concept, and no one knows we’re siblings.
Our love, our children—nobody’s harmed by it.
“Anything else you desire?”
“Hmm… Nope.”
“So little ambition…”
“No, wait, there’s one thing.”
Not a favor—something I want.
“What is it? Speak.”
“I want to run a clinic. Here.”
“Ohh…♪”
I’ve always wanted this. I can’t do it in Japan anymore, but I want to use my ability to help others. With Rosecia’s oversight, it might be possible.
“You’re truly…”
“Hm?”
“Kuku, nothing♡ Approved. Do as you like.”
“Thank you.”
All my wishes are fulfilled—wonderful women, their children, and a clinic. That’s enough for me.
“Don’t forget your duties as Waheide royalty and Saionji proxy.”
“Ugh… Yeah, I’ll try.”
To protect those things, I might become the world’s busiest man. But it’s the path I chose.
“Do your best, husband♡”
Rosecia’s vagina clamps kyunkyun♡ around my cock.
A side note: royal duties mainly involve making children with retainers, but I’d learn that later.
※
Summer in Waheide, a tropical nation, should be swelteringly unbearable. Yet the building I’m in exudes solemn grandeur, its interior refreshingly cool.
“Phew… I’m a bit nervous.”
Adjusting my tuxedo’s collar, I reflect on the ceremony ahead.
(It’s simpler than Japan’s, I hear…)
That ceremony—the one held in a church.
“Darling♪”
A woman’s voice interrupts my thoughts—Ayaka.
“Wow, you’re stunning, like a princess.”
“Fufu, thank you. You look dashing too♪”
“Really?”
As we chat, another voice chimes in.
“How about me, Darling?♪”
“Gods… You’re adorable, like a model.”
“Geez, I am a model…”
“Oh, right, haha.”
This beauty is Satsuki. And then—
“Onii.”
The third girl appears, the one I love most—my sister, Ai.
“How do I look…?”
“You’re the world’s cutest… Truly gorgeous.”
“Really? Ehehe♪”
Her charm tightens my chest, like my first love all over again.
“Honestly, only Ai-san gets all the attention?”
“Yeah, Ai’s not the only bride here, you know?”
“You’re right. You’re all the world’s cutest.”
Before me stand Ai, Satsuki, and Ayaka—three women. Today, I marry all three.
Unthinkable in Japan, but here, taking multiple wives is freedom itself.
As husbands and wives in this country, at least.
“Onii’s the world’s coolest and most wonderful.”
“Totally, such a hunk.”
“The finest gentleman.”
They shower me with praise. I gaze at each face.
Ayaka—my older, once-married love, whose beauty captivated me. I fought hard to claim her from a cruel husband, and today, we unite.
Satsuki—the friend of Ai’s I first saw as a girl, sparking love before I knew it. My first girlfriend, she helped me face my desires and find my true self. Today, I join with her.
Ai—my dearest, the ultimate girl. I once thought our sibling bond barred us, but that was an excuse. Love conquers all obstacles. Today, I finally unite with her.
These three are peerless beauties, equal in radiance. Marrying them all at once—sorry to other men, but I’m not holding back.
Because we love each other.
Lost in sentiment, a solemn voice echoes from the cathedral.
“Groom and brides—enter.”
Finally. This is what I’ve longed for—
“Darling.”
“Darling.”
“Onii.”
My exclusive happiness.
“Let’s go.”
※
The ceremony proceeds.
“Ai…”
“Onii…”
We lock eyes.
“Now—the kiss of vows.”
Her gaze, the one I’ve seen more than any other, holds unmatched beauty, setting my heart racing.
I know it. I’ve loved her always, and I’ll love her forever.
Our breaths align, and together—
“I love you.”
Our lips meet.
THE END (Of Series 1)
T/N: This ends series ! There will be a second series, which is the start of the creation of the boob harem academy





































