How Using My Oppai Skill to Enlarge My Sister’s Breasts Led to Building a Harem - Chapter 33
Chapter 33
After a month abroad, I’ve returned to Japan.
To unwind from the long journey, I decided to take a bath—but it turned out to be more than just a soak.
“Let me wash your back, darling♪”
To my surprise, Ayaka-san, her belly round with pregnancy, joined me in the bathroom.
There was no way I’d refuse such an offer, so I happily agreed.
(Still, if she slips, it could be dangerous. I should take care of washing her.)
“Ayaka, sit here.”
“Oh…”
“I’ll wash you. Your body’s precious right now.”
“You don’t have to… A gentleman shouldn’t trouble himself like that…”
Ignoring her protests, I gently guided her to the bath chair and moved behind her. Lathering body soap, I slowly ran my palms over her back.
“How’s that? Feel good?”
“Ah… Haa… It feels wonderful…”
My hands are special, after all. But my true talent lies elsewhere—
“An♡ …M-My oppai… Au♡”
“Your oppai are truly beautiful, Ayaka…”
“Nuu…♡♡♡”
As I massaged her breasts, Ayaka trembled slightly, clearly overwhelmed with pleasure. To keep her steady, I pressed my body close, kneading the soft symbols of motherhood.
“Aa… No… Something’s coming out… Uu…”
Pyu♡ …Pyuu♡
“Oh… Wait, milk… from your oppai…”
“Auu♡ N-No…♡ Aa…!”
Whether from pleasure or instinct, she leaned back against me, convulsing slightly as thin streams of milk spurted intermittently from her breasts.
(Incredible… So this is breast milk…)
“Y… It’s embarrassing…”
“No need to feel shy. Your body’s preparing for our baby.”
Normally, milk comes after birth, but there’s no harm in it appearing now. If anything, it’s a treat for me.
“You’re beautiful, Ayaka… I love you.”
“Darling…♡”
As an oppai enthusiast, how could I not adore milk-producing breasts? Careful not to hurt her nipples, I gently rubbed them with my fingers.
“Hau♡ …My oppai are tingling…♡”
Each stroke coaxed more milk out, making Ayaka blush with embarrassment.
I could’ve stayed like that forever, captivated by her cuteness, but I didn’t want to risk chilling her pregnant body. Reluctantly, I released her nipples, washed her thoroughly, and we settled into the tub.
…
“Phew… This bath feels amazing.”
“Indeed, it’s delightful…”
We soaked together in a spacious tub, me behind her, arms wrapped around her for a cozy bath.
(Ayaka’s body is so soft and comforting…)
Her feminine curves pressed against me, my cock inevitably nudging her plump rear.
“Ah…”
“Oh, you…♡”
I’d meant to hold back, but touching my beloved’s body sent my eager rod into overdrive, demanding attention.
…
“How’s this, darling? Nn, nn…♡”
“So soft… Warm… Uah, it feels so good…!”
“Hehe, now it’s my turn… to make you feel clean, nn…♡ and good…♡”
As water splashed, Ayaka’s ample oppai enveloped my naughty rod, stroking it.
“It’s been a while… It’s so… impressive♡”
Gyuuu♡
“Uhaa…!”
Mesmerized by her bouncing breasts, I didn’t notice her pressing them together, squeezing my cock tightly.
“Gua… Aa… So good…”
“Nn… Haa…♡”
Pyuu♡ Pyu♡
“Oh… More milk…”
“Auu…♡ I’m sorry, it just comes out… Aan♡”
“It’s fine… You’re my goddess, Ayaka…”
My beloved, pregnant with my child, leaking milk from her oppai while stroking my cock—what man wouldn’t feel on top of the world?
(She’s so beautiful… How did I end up with someone this perfect?)
Ayaka once said she was at rock bottom when illness brought her to my clinic. It’s callous to think, but that misfortune led to our meeting—a stroke of incredible luck for me.
“Nn♡ My oppai are yours…♡ Feel even better…♡”
“Uaa…! That’s too good…!!”
The water splashed rhythmically, her soft oppai gripping my cock—gyu♡ gyu♡—in sync with the waves.
This paizuri was unmatched, likely the best in the world.
I meant that sincerely.
“Your oppai are perfect! Aa… I’m cumming…!”
“Nn♡ Nn♡ Nn♡ Nn♡ — Let it out♡ Release your milk…♡”
Dobyu♡ Doku♡ Dokudokudokudoku♡
Defeated by her soft oppai, my cock erupted, spurting thick semen. Trapped between her flesh, it convulsed, white milk gushing from the tip.
“Haaan♡ Incredible… Jururu♡ So thick, so hot, so wonderful…♡”
“Ayaka… Ayaka… Uaa…”
It felt too good for words.
My heart, body, and mind—everything was filled with happiness.
“Aa… Uaa…”
“I’m the happiest woman in the world♡”
No, that’s me, I thought, but my tongue couldn’t form words, lost in endless waves of orgasmic bliss.
※
After basking in the Saionji family’s hospitality, as night approached, I headed home.
My house stood unchanged, and I stepped through the familiar entrance, calling out.
“I’m back!”
“Oh! Welcome home. You’re so tanned and rugged now!”
My mom greeted me, thrilled to see her son after so long.
“Where’s Ai?”
“She’s already settled into her new school’s dorm.”
“I see…”
My sister Ai had enrolled in an elite all-girls boarding school. I’d hoped to see her off, but I missed the move by a hair.
“You’re starting your second year soon, right? Ready?”
“Yup. I nailed English abroad.”
“Of course! Living overseas? I’m not worried about you.”
Other subjects lagged, though.
(Miyabi-san’s got my back, so I’m not stressed.)
My life was back to normal.
※
My first day back at school, now a second-year, heading to a new classroom.
“(Wait, who’s that?)”
“(You know, the model’s boyfriend…)”
“(Oh, him…! Isn’t he insanely hot?)”
I noticed more girls whispering about me than before. New freshmen, maybe, but I felt oddly conspicuous.
(I got pretty tanned, and my body’s bulked up…)
A month under the tropical sun left my skin bronze. Climbing trees, chopping wood—daily life was like a workout, sculpting my physique.
“Hey, Yukino, morning!”
“Eh…!? Oh… Morning!”
“What’s up? Nervous for the new year?”
“Uh, yeah… maybe?”
We’re in the same class, as this school rarely shuffles them.
“Oh, Riria! Yo!”
“Huh…? Whoa!?”
“What’s wrong?”
“N-Nothing… Just, you got kinda hot.”
“Really? Guess I tanned a lot.”
Casual chats, familiar school halls—maybe my confidence from living abroad changed how I see things. The scenery feels different.
“Here’s to another year, yeah?”
“Yup!”
“Totally.”
I’d grown a bit, ready for school life.
…
A week later, I was grappling with a new issue—a pink letter slipped into my desk.
“Another one?” Yukino asked.
“Yeah… A letter…”
“Every day lately, huh? Confessions?”
“Yup, but I’m turning them all down.”
For some reason, I’d become popular. I’d never gotten old-fashioned love letters before, but now they were piling up.
It’s flattering that girls put in such effort, but I already have plenty of women I love. Plus, with a child on the way—though I can’t say it publicly—I don’t have time to play around with schoolgirls.
“…This might sound weird, but do you smell sweet?” Riria asked.
“Sweet?”
“Oh, Riria-chan, you noticed too?” Yukino chimed in.
I couldn’t smell it, but apparently, I gave off a sweet scent.
“Am I… stinky?”
“No, no! It’s a good smell, like…” Yukino trailed off.
“Yeah, kinda… arousing?” Riria added.
Riria’s always horny, so no surprise there. Still, I was relieved it wasn’t bad.
Trying to shift gears, I changed the topic.
“Anyway, gotta focus on studies. Riria, your grades are up, right?”
“Yeah, thanks to you and Yukino, probably.”
“No way, it’s because you worked hard, Riria-chan,” Yukino said.
Riria struggled with classes last summer, but hanging with us pulled her grades up.
School life was going smoothly.
※
Outside school, I studied and trained at the Saionji estate. With the clinic on hold, I could focus on self-improvement.
“Well done, Master. You’ve caught up on missed studies,” Miyabi-san said.
“Thanks to you, Miyabi-san.”
Her guidance filled in gaps from my absence. Next was physical training, complete with my usual protein shake.
“Uh, about this protein… Is there something in it?”
“Something?” she asked.
“Well…”
There’s a faint scent—like that fruit. Wasn’t its recipe a secret abroad?
“Never mind.”
Queen Rosecia said small amounts were healthy, so I downed it without worry.
(…Yup, that heat in my groin…)
Definitely pao fruit extract.
“Will you be with Ayaka-sama today?”
“Is regular sex okay now?”
In her stable phase, vaginal sex is generally fine. With proper medical support, it’s safe if we’re careful.
“She’s in good health, so it should be fine.”
“R-Really…?”
It’d been a while since I’d made love with Ayaka-san. Between studies and the new term, we hadn’t had the chance. The thought of being intimate again sent my heart racing.
Then, a girl’s voice called out.
“Hey, Nii-cha! Done training?”
It was Maya, who’d recently started living here.
“Maya. Yeah, I’m done for today.”
“Really!? Then play with me!”
“True Maya-sama, Master has plans now,” Miyabi-san interjected.
“Aww~”
Maya clung to me, still as adorable as ever. I wanted to hang out, but…
“Today’s for Ayaka-san… you know, that. So, tomorrow, Maya?”
“Muu… Ayaka, huh…”
“Yup. It’s her turn.”
“Fine. But I’m next, okay? …Chu♡”
Raised in Waheide’s polyamorous culture, Maya doesn’t fuss over sharing. Promising her next, I headed to Ayaka-san’s room.
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