How Using My Oppai Skill to Enlarge My Sister’s Breasts Led to Building a Harem - Chapter 48
Chapter 48
A bolt from the blue—that’s exactly what it was. An earth-shattering event unfolded one evening.
“Mistress! Master! It’s urgent!!”
“Akane-san…? What’s wrong?”
Akane-san, a maid trained under Miyabi-san’s strict guidance, burst in with a haste that could be called unbecoming.
“It’s… huff, huff—the Master… He’s here.”
“What!?”
Her words caught me off guard, freezing me in place. The Master… That means…
“Ayaka-san’s…”
“—!?”
“He’s already at the main entrance.”
Her legal husband—the real one. This is bad, isn’t it…? At the very least, my presence here is nothing but a liability for Ayaka-san.
“Ah… Ah…”
“Ayaka-san!? Are you okay? Your face…”
“Y-Yes… I’m sorry…”
Ayaka-san’s face had gone deathly pale, almost unbearable to see. And no wonder—her husband is her trauma. A man who never cared for her, insulted her looks, and even raised his hand against her, or so I’d heard.
(What do I do…? Can I leave her like this? No…)
No way I could. Abandoning Ayaka-san in this state? Unthinkable.
“I’m going too. Akane-san, please lead the way.”
“No…! If you go, who knows what he’ll do to you…!”
“But I can’t leave Ayaka-san alone.”
I met her frightened eyes, speaking firmly.
“I’ll protect you, Ayaka-san. No matter what I may lose.”
“Darling…”
“Master…”
If I’m sued as the other man, I could lose everything. Even so, I refuse to be the kind of man who flees, abandoning the woman he loves.
Seeing my resolve, Akane-san said, “Understood,” and began leading the way.
The familiar corridor felt alien, the carpet’s texture foreign underfoot. I was that mentally cornered.
“Master.”
“Miyabi-san…”
Just before reaching the entrance, there stood the person I admire most—Amakawa Miyabi-san.
“Are you prepared?”
“Yes. I’ll protect Ayaka-san, no matter what.”
“I see. Then I have one request.”
“…? What is it?”
Being formally asked felt odd. I’ve never once disobeyed Miyabi-san’s instructions.
“Can you trust me?”
“Huh…? Of course I trust you.”
“Good. Then there’s no issue.”
With that, she bowed, expressionless as ever.
“The ‘guest’ awaits in the entrance hall,” she said, cool as ice.
(She’s so dependable… My saving goddess right now…)
Emboldened, I squared my shoulders and turned the corner into the grand entrance hall.
…
“You finally show up… Making the master wait, eh, you filthy sow?”
The man before us opened with a vile insult to my precious person. In that instant, my head flared, blood boiling.
“Young Master, it’s dangerous. Protect the master!”
“Yes, sir!”
Noticing my demeanor, an elderly butler barked orders to burly men in black suits.
“Hmph! A stray dog like you. To think an ill-mannered mutt has been squatting in my estate, even temporarily!”
The man sneered—Hojo-in, from one of the nation’s four paramount families. He looked polished: about my height, 180 cm, black hair slicked back, strikingly handsome. But his gaunt frame and reptilian eyes, slimy and sinister, chilled me. A snake of a man.
Yet, for all his creepiness, he wields near-unrivaled power in this country—a titan of status, wealth, and talent, far surpassing me. Born a victor, an absolute winner.
(Damn it! What do I do…?)
I’m just a powerless high schooler. This is like an ant challenging an elephant—no, not even a fight.
Crushed by despair, I glanced at Ayaka-san.
“…Eek… Ah…”
“Ayaka-san…”
Her face was beyond pale—ghastly. She looked ready to collapse. Shielding her, I stepped into Hojo-in’s line of sight.
“What’s this, moving without my command, dog?”
“I refuse. I’m not your dog.”
“Oh…!?”
His pride wounded by my defiance, fury radiated from him.
“Hey, Amakawa! Get this filth out! That’s an order!”
“…”
“Can’t hear me, you sluggard!? Just a third-rate minor house’s spawn!”
Miyabi-san didn’t respond—an improper stance for a maid toward her formal master. A silent declaration.
(She doesn’t acknowledge him as master… But as a Saionji maid, she can’t act directly…)
Of course. The Amakawa are a Saionji branch family, serving for generations. This man, formally wed into the Saionji, is her legitimate master. The gap between us is vast, if less than mine.
“Enough. I’ve no time for lowly vermin. Oi, sow!”
He spat the insult again. My body trembled with rage.
“Bring the brat you birthed.”
“What…? Why…?”
Ayaka-san’s voice trembled, incredulous.
“Why? To have it be raised by myself, obviously.”
“Wha… N-No… No!”
“You have no say in these things!”
Hojo-in advanced, heels clicking, reaching for Ayaka-san, her body slightly exposed beside me.
“Do it, you—”
“Stop.”
I blocked him with my body.
“You cur!!”
A sharp sound echoed through the vast entrance. His backhand struck my cheek hard.
“Please, stop.”
Ignoring the pain, I bowed. It was nothing compared to Ayaka-san’s fear.
“Move.”
Another blow. Blood trickled from my nose, a metallic taste filling my mouth.
“Please. Don’t hurt Ayaka-san or our child.”
I kept bowing. It’s all I could do—a liability to her, bringing only harm.
“Please… Ugh.”
That one hurt. My mouth cut, a throbbing ache spread.
“Please.”
“…”
Perhaps tired of my repetitive pleading, Hojo-in stopped hitting.
“Brainless meathead. Too stupid to feel pain? Kuhahaha!”
“…”
Insult me all you want. If it draws his focus, the pain means nothing.
“But, let’s see… That sow and this stray made a kid, didn’t they?”
“…!”
This is bad. Beyond violence, if he says more—
“Shall I announce it as a bastard child? What do you say, Saionji?”
The worst. No excuse would hold—a DNA test would prove Yuichiro isn’t his. We’d turn the entire Saionji against us. Me, Ayaka-san, Yuichiro—we’d be ruined.
“Please… I beg you, Lord Hojo-in…”
“Fool. A peasant dares utter my name?”
A deafening crack rang in my skull. My fading resolve made it hurt—truly hurt.
(Is it over…? Will Yuichiro be taken, raised as this scum’s slave?)
As the assured Saionji heir, his life might be spared, but this man raising him properly? Never.
I envisioned sweet Yuichiro, a lifeless puppet, sitting expressionlessly on the Saionji throne.
His life stolen by this filth, robbed of joy.
That thought snapped my reason completely.
“Come, sow!!”
“Kyaaa!”
“Shut up! You’re my propert—ugh!?”
A crunching sensation jolted through my right fist.
It had smashed into the man’s face, crushing flesh, shattering his nose.
My mouth roared of its own accord:
“Don’t touch my woman!!!!”
That yanked me back to reality.
Hojo-in, blown back, writhed like a broken tin toy.
“Young Master!? Go, get him!!”
“Yes, sir!”
The waiting men in black charged at me.
(It’s over. They’re pro bodyguards. I’ll be pinned, arrested for assault.)
Four approached—not frail like Hojo-in but thick, battle-hardened fighters. No chance for me to counter them.
I held up well, I thought. There was never a chance to win. Landing one hit on that scum? Worth it.
“Brat! Daring to strike Lord Hojo-in…”
“Regret it behind bars forever!”
Damn, two from both sides—I can’t even resist.
(I’m done for, huh…)
For one last look, I turned to burn Ayaka-san’s image into my eyes.
A gust of green wind streaked past me.
“Shi…!!”
Something swung at blinding speed, like a dance, radiating honed human brilliance.
Two men in black fell.
“You okay?”
“Wha—Leonora-san…?”
(Why? She’s Rosecia’s… the queen’s guard captain.)
Why interfere in a Saionji-Hojo-in dispute? As I pondered—
“Who’s this woman!?”
“Go, don’t let your guard down!!”
The remaining two shifted to Leonora-san, lunging.
But—
“Argh!?”
“Gu… Gaaa!!”
Another figure stepped from my other side, slamming them to the ground.
“M-Miyabi-san…”
The perfect maid, silent until now, spoke.
“Well done, Master.”
“Oh…”
I thought I saw her smile—her lips curved faintly as she looked at me.
“Leave this to us.”
“Yes.”
Leonora-san on my left, Miyabi-san on my right. The mightiest duo stood to protect Ayaka-san and me.
…
“Idiots, idiots, idiots!! Finish them, you useless fools!!”
The man screamed, no longer the invincible titan of minutes ago—Hojo-in.
“Too slow!”
“Pointless.”
Six men remained, including those from the car. But it was clear they were no match.
Leonora-san moved like the wind, lunging, feinting a sword thrust, then kicking back to evade, leaving a man writhing from a precise strike.
Miyabi-san was a willow, sidestepping, positioning outside the enemy’s effective range. A flawless stance exploiting human anatomy. Then—a man flew.
Another technique leveraging wrist joints and bipedal instability.
“What are you doing!? Mere women!!”
Foaming at the mouth, Hojo-in raged, his elite dignity gone.
“Incredible… They’re that strong.”
I knew Miyabi-san was formidable, but Leonora-san was unreal. Her sword—likely a blunted replica—left trails of light.
“It’s over.”
The final man’s arm snapped, his head driven into the ground.
(Not dead, right?)
Hoping for Miyabi-san’s mercy, the situation hadn’t changed. We were still overwhelmingly disadvantaged.
“You bastards!! I’ll never forgive you!! I’ll show you what happens when you defy ME in this country!!”
“—Oh? What happens?”
“Rosecia…?”
Why was the queen here, in such danger? Ignoring my confusion, Hojo-in bellowed.
“Death!! All of you, executed!!”
“Ha, hahahaha!! Execute me…? Kuhahaha!!”
“What’s so funny!?”
Rosecia laughed as if at a jester, igniting Hojo-in’s fury.
“You ugly pig!!”
“Danger!!”
As he lunged at her, I tackled him. Clumsy, but my size’s kinetic energy sent him crashing into a wall.
“Nice one, husband♪ Though Leonora could’ve handled it.”
“S-Sorry, Leonora-san.”
Unnoticed, Leonora-san stood before Rosecia, sword poised.
“Ahem, just Leonora is fine, Your Highness…”
“N-No, that’s a bit…”
Terrifying. I realized how reckless I’d been, calling her casually.
What’s happening…?
“This is Her Majesty Rosecia, Queen of Waheide,” Leonora-san’s clear voice rang out.
“A mere noble dares speak as an equal?”
Maybe, but even a queen can’t meddle in Japan’s affairs.
Silence fell, save for one.
“Don’t mock me!! I don’t know her!! This country is MINE!! I’m the king!!”
Hojo-in ranted incoherently. Then, an unfamiliar elder’s voice boomed.
“Oh? You’re the king…?”
“Who’s that!?”
“Forgotten even that, Hojo-in brat…?”
The ominous tide began to turn.
A projector cast an elder’s piercing gaze on the white wall.
“Saionji… Patriarch…”
“Indeed. You’ve caused quite a mess in my garden.”
“Lies! They attacked first!!”
Hojo-in boldly lied—or perhaps my beating didn’t count.
“Don’t lie. I saw everything. You struck that boy and tried to harm my granddaughter.”
His final words dripped with anger.
“And this country’s yours? Such nonsense isn’t even a jest.”
“Ugh…!”
A grave misstep. This nation has a true emperor. Not officially a king, but such words could be treason.
“Haha… But you Saionji are cornered too.”
“Oh?”
“That woman, my wife, slept with a peasant boy and bore his child!!”
“…”
“If this goes public, Saionji’s trust collapses. Old nobles will scorn and shun you.”
True. Punishing him might be feasible, but it’s a personal issue. The damage to Saionji’s reputation would be far worse.
“If I may,” Miyabi-san interjected.
“Amakawa’s girl…? Why you…?”
“Miyabi, eh?”
“It’s been a while, Patriarch.”
She offered a flawless bow, unruffled even here.
“I have information about this man.”
“Hm, intriguing. Speak.”
“Yes. Matching his twisted nature, he harbors perverse proclivities.”
Right, a pedophile. Publicizing that would hurt him mentally, but…
“According to a source, young girls are abducted and confined in his mansion’s basement—”
“Lies!! No such thing!!”
“No, it’s verified. With evidence.”
Miyabi-san snapped her fingers. Another maid played a recording.
“Stop… please…”
“Hahaha! Tighten more, lowborn scum!”
A young girl’s voice… and Hojo-in’s.
“Wha, wha, wha…”
The machine droned on.
“Ooo! Here it comes…!”
“Igii!?”
“Take it! Be grateful, scum!!”
“No…!”
“Kuhaha… Be thankful, girl, for the chance to bear my noble seed.”
“Ah… Aaa…”
The girl’s despair, Hojo-in’s utter lack of guilt.
(No way… He did this…?)
“Phew… Decent, but next, find a younger one.”
The audio ended.
We froze, horrified. But one was unfazed.
“Quite a vile taste…”
Rosecia, her tone cold as if addressing a condemned criminal.
“I concur, Your Majesty,” the elder said.
“If true, this transcends one noble house’s issue.”
“H-Haha… My apologies…”
With immigrants in Japan, organized child abduction and rape would spark international condemnation.
“It’s fake… Software can forge anything…”
“Don’t you know where this came from?”
“Huh? What’re you saying… Where…!?”
Hojo-in whirled, facing the elderly butler who’d served him since childhood.
“No… You, old man…?”
“Young Master…”
Stunned, Hojo-in’s bravado vanished, staring at his confidant like a fool.
“Let’s stop… No more misery…”
“Why… Why!? Why me, defeated by vermin…?”
Leonora-san restrained the now-limp Hojo-in.
“What about you?”
“Yes… I’ll atone with the Young Master.”
“I see.”
The butler surrendered quietly. Bound, they’d wait for Saionji security.
“…Phew. It’s over… Oh, Ayaka-san…!”
“Yes, darling?”
“Haha… You’re okay?”
“Yes, thanks to you. But you’re the one hurt.”
“Ow, ow, ow…”
My nosebleed stopped, but my lip was cut. As Ayaka-san pressed a handkerchief to it, blood stained the white cloth.
“It’s fine. You’ll ruin the handkerchief.”
“Geez, darling…”
Her soft giggle finally convinced me the ordeal was over—but…
“By the way, you, clinging to my granddaughter. What right do you have to touch a Saionji daughter?”
“!?”
It wasn’t over. Hojo-in’s downfall didn’t erase my adultery with Ayaka-san.
“Wait, Grandfather! He’s my…”
“Silence. I’m speaking to him.”
No room for negotiation—he ignored her.
“You defiled my granddaughter, impregnated her, and endangered our clan. Correct?”
“Y-Yes…”
No defense against the patriarch. Moments ago, I basked in victory; now, I faced judgment.
“Are you prepared?”
“Yes… But please, spare Ayaka-san and Yuichiro…”
“That’s not for you to decide.”
(So it ends like this. My sins catching up… Evil deeds return in the end.)
As I resigned, a saving voice rang out.
“Please wait, Patriarch.”
“Miyabi… You?”
“May I have a moment?”
“What…? What are you planning?”
The patriarch seemed puzzled. Ignoring us, Miyabi-san stepped forward, presenting a paper.
(What’s this…?)
“Please sign here.”
“Adoption… To the Amakawa…?”
“What’s that?”
What’s going on? Why adoption? Isn’t Amakawa Miyabi-san’s family?
“You said you’d trust me, didn’t you?”
“Miyabi-san…”
Right, she asked me to trust her before we came. There must be a reason. I vowed to protect Ayaka-san and Yuichiro, no matter the cost…
“Got it. I’d never doubt you.”
I took the pen and began signing the agreement.
(If this takes effect, I’ll lose my family…)
My parents, who raised me, and my beloved sister, Ai, flashed in my mind. But before me, Ayaka-san watched anxiously, and nearby was my son.
(I swore to make them happy. So—)
“Is that acceptable? We’ll secure your parents’ consent later.”
“Yes…”
What just happened? I looked around, but no one could explain.
“What’s this? Taking him into Amakawa—what’s the gain?”
“Hehe, there’s plenty, Patriarch,” Miyabi-san said.
“What?”
“Isn’t that right, Your Majesty Rosecia?”
The conversation leapt to Rosecia. What’s happening?
“Indeed…”
“No way…”
The patriarch’s voice grew anxious.
“No way… You plan to take over Saionji, Miyabi?”
“Who knows?”
“Huh…? Huh?”
My mind blanked, comprehension failing.
“I see…”
Ayaka-san got it. I was the only one lost.
“Taking my husband makes him kin to Waheide’s royal family—gaining a nation’s backing,” Rosecia clarified.
“Oh…!”
Her explanation clicked. Even as a branch, Amakawa’s rise would shake Saionji’s foundation. A monolithic organization would face a house bolstered by a powerful nation, its influence immeasurable.
Eliminating me and Yuichiro would leave Saionji heirless, risking defections from those fearing for the future…
“Clever move, Miyabi.”
“I’m honored.”
The tables turned. The unstable Saionji versus the ascendant Amakawa. The outcome was clear.
“Fine. I lose… I’ll acknowledge it.”
“Huh?”
“Not ‘huh.’ I’m acknowledging your marriage into Saionji.”
“Wha!?”
How did this happen? The patriarch approved my marriage. But why…?
“Patriarch, not just acknowledge—?”
“Mmph… Right. Would you join our Saionji family as a son-in-law?”
“Uh, uh…”
Shock left my mouth agape. Ayaka-san approached.
“Ayaka-san…”
“Yes.”
I didn’t understand. But one thing was clear, and it needed saying.
“Marry me.”
“Yes, gladly.”
That I love Ayaka-san.
※
“Phew… Exhausted…”
Later, I learned the truth. Miyabi-san had no intent to betray. Adopting me into Amakawa, then marrying me to Saionji, transferred Waheide’s support intact. This proved my value, strengthening Saionji’s position.
“All sorted by Miyabi-san…”
All according to her plan. The preparations were too perfect otherwise.
“I can’t beat her… Haha.”
Everything worked out. I’ll marry Ayaka-san at 18, and Yuichiro can be openly my son. Flawless—a feat worthy of the Perfect Maid.
(Happily ever after…?)
A knock came at my bedroom door.
(Who…? I said I was sleeping. Ayaka-san?)
“Come in, it’s open.”
“Excuse me.”
“Huh?”
Not Ayaka-san, but—
“M-Miyabi-san…? Why?”
“Why? What do you mean by that?”
“Your… outfit…”
“Hehe, I thought I’d give you some personal guidance, little brother♪”
I soon learned I’d been utterly fooled by her all along.
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