How Using My Oppai Skill to Enlarge My Sister’s Breasts Led to Building a Harem - Chapter 37.1: Riria’s Secret AV Debut 1

Chapter 37.1: Riria’s Secret AV Debut 1

I got Satsuki-chan pregnant. It’s not just a mistake—it fills me with joy, too. But the problem is—

(How am I going to cover the delivery costs…?)

Money.

Satsuki-chan says she’ll pay, being a successful model, but as a guy, that feels utterly pathetic.

(Fifty thousand yen, though… I can’t scrape that together.)

Childbirth is insanely expensive. A mere student like me doesn’t have that kind of cash. Borrowing from the Saionji family? That’d be beyond rude.

“What a mess…” I mutter.

“What’s got you so stressed?” a voice asks.

“Riria…”

“Hm? Wanna talk?”

In the classroom, Riria slings an arm around my shoulder, all casual familiarity. With no bright ideas of my own, I decide to confide in her, even if it’s a long shot.

“So… I got her pregnant, huh?” she says, after I spill the details.

“Yeah. Embarrassing, but I didn’t even notice.”

“Pfft, that’s pretty common.”

Apparently, plenty of Riria’s friends have been in the same boat.

“She’s choosing to keep it, and you’re still playing the dutiful guy? So upright.”

“I can’t just ditch responsibility like that.”

“Fair enough. So, what about the money?”

“That’s the thing…”

I don’t have time for a part-time job, and even if I did, fifty thousand yen is a pipe dream. I’m completely stuck.

“Okay, okay, hear me out—I’ve got a killer idea♪” Riria chimes, eyes glinting.

“Whoa, not some shady gig, right…?”

I’m not that desperate.

“Nah, nothing like that. Just using your body to make some cash♪”

“What’s that supposed to mean…?”

Her sly grin only deepens my confusion.

※

“Here, come on in,” Riria says, opening her front door.

“Thanks for having us,” I reply.

“Uh, thanks for havin’ us~” Yukino echoes.

After school, Yukino and I find ourselves at Riria’s place.

“Been a while since Christmas, huh, Riria-chan’s house?” Yukino notes.

“Your mom not home?” I ask.

“Nope, we’re good,” Riria assures.

I don’t pry into her family situation—everyone’s got their own story. As I muse, Riria leads us to her room, telling us to sit wherever.

“So, how’re we making this money? Some kind of side hustle?” I venture.

“Pfft, you think folding envelopes’ll get you fifty thousand? Get real,” Riria scoffs.

“Riria-chan, that’s a bit harsh…” Yukino chides.

“Nah, it’s fine. So, what’s the actual plan?” I press.

I wasn’t seriously banking on piecework.

“This, right here,” Riria declares, holding up her smartphone.

“A phone…? What’re we doing with that?”

“Just watch… Here we go!”

Suddenly, Riria starts stripping. Her shapely oppai bounce purun♡, stoking my desire.

“Amateur AV shoots,” she announces.

“Riria-chan… what’s an ‘amateur eibui’?” Yukino asks, puzzled.

“You don’t know? It’s filming sex and selling it.”

“What!?” Yukino gasps.

No surprise there. No normal student would even consider this.

“A friend of mine’s doing it. Says it pays pretty well.”

“Isn’t that, like, run by sketchy types?” I question.

“That’s old-school. These days, anyone can film and edit.”

Fair point.

“Still, is it safe…?” Yukino frets.

“They’ll blur our faces, so it’s fine,” Riria reassures.

“No, I mean… I don’t want you doing this just for me,” I say.

If Riria’s only in it for my sake, I’ll shut it down. Getting caught could mean expulsion.

“Hey, I need pocket money too,” Riria counters.

“Really?”

“Yeah, ever since I swore off other guys for you, I stopped my side gigs. Savings are running dry, so this is perfect timing.”

She’s all in. In that case… there’s risk, but I’m out of options.

“Just to be safe, can you check if we can handle the blurring ourselves?” I ask.

“Got it♪ Let’s start shooting!” Riria chirps.

And so, we begin filming sex.

※

“Nn♡ Jubo, jubobo♡ Zuzu♡” Riria moans.

“…!!”

Naturally, I’m Riria’s partner. Stripped down, we’ve filmed foreplay and now, in a 69 position, we’re licking each other’s privates.

“Nn♡ Nn♡ Nn♡ Nn♡ Jubobobobo~~~♡” she continues.

(…Ah…!)

As the male lead, I stifle my voice. Every guy’s cringed at a porn where the dude’s moans kill the vibe, right?

Despite my valiant effort, my partner slurps my cock with vulgar gusto, savoring it like a delicacy.

“This cock♡ Gaho♡ Jurururu♡ The best~~~!!”

(Guoh!?) I bite back a grunt.

Riria’s a pro at sex, and her blowjob’s top-tier. Her vacuum-like suction yanks my shaft, nearly overwhelming me.

(She’s going too hard… Is she the type who gets off on being filmed?)

Some people thrive under a lens, and Riria might be one. With her gorgeous face, seductive body, and apparent thrill from exposure, she’s got the makings of a natural AV star.

Discovering her hidden talent sends a thrill through me.

※

<Yukino’s Perspective>

I don’t quite get why, but they’re having sex, and I’m filming it.

(I’ve gotta do my best for them…!)

Not sure what’s going on, but since I was asked, I’m giving it my all, capturing their every move on the smartphone.

“Aan♡ Big cock♡ So good~~~♡” Riria cries.

Through the screen, I feel their passion surging, their bodies intertwining in fervent heat.

Zu♡ — Paan♡ Paan♡ Paan♡ Paan♡

Their bare genitals collide before my eyes, naughty juices splattering.

(Haa…♡ Haa…♡ They’re incredible…♡)

“Ooo♡ That hits the spot~~~♡” Riria wails.

She must be getting pounded in her sweet spot, writhing with sultry moans.

(Kuh, aa…) he grunts silently.

He’s holding back his voice, thrusting his swollen cock in and out with desperate restraint.

“Ngoo♡ Yes, wreck me with that big cock~~~♡”

That massive cock—I’ve felt it so many times. When it hits the sides of my womb, it blanks my mind with pleasure.

Answering her pleas, his hips speed up, slamming his cock with womb-crushing force.

Dochun♡ — Dochun♡ Dochun♡ Dochun♡

“Khiii~~~♡ My pussy… It’s breaking~~~!! Nnnn♡” Riria screams.

Her raw, lustful cries erupt, eyes wide, nearly rolling back.

(Almost… Almost that moment…♡)

“Cumming…! Aaaa… Cumming!!” she shrieks.

“Oh, aa…” A moan slips from him, succumbing to pleasure.

“Ngooo~~~♡♡♡”

“Gu…” he groans.

With a doba♡, his semen spurts from the gaps of her pussy.

“I’m cumming…♡ Ooo… Nn♡” Riria pants.

(Haaa…♡ They look so satisfied…♡)

Riria bares her orgasmic face to the camera. Filming it, I feel my thighs dampen.

“Ehehe♡ I came…♡”

She remembers we’re shooting, turning to me with a grin, speaking through the lens.

(Riria-chan… So cute…!)

Smiling with his cock still inside, her trembling body and hardened nipples reveal a girl’s true desire. That’s Riria-chan’s charm, I realize.

“An♡ Ready… Wanna do my butt next?” she teases.

His cock, far from sated, twitches inside her. Still connected, she spins into a back position, shaking her rear.

“Here’s the next spot…♡”

Spreading her cheeks, she angles her anus for the camera.

※

“How’s it look? Did we get good shots?” Riria asks.

Filming done, Riria has Yukino check the footage.

“Uh, yeah… It’s my first time, so I’m not sure, but… is it okay?” Yukino replies.

“Looks great♪ Awesome job, Yukino-cchi!” Riria cheers.

“Ehehe.”

We covered everything—blowjob, sex, anal. Now it’s about editing, but…

“Hey, if it’s okay… could I try editing the video too?” Yukino asks, surprising us.

“Huh?” Riria blinks.

“I’m cool with it, but… you sure you can handle it, Yukino-cchi?”

“I’ll study hard and give it a shot!”

I don’t know why, but Yukino’s dead serious. In that case—

“I think it’s a good idea. If you need help, we can ask my teacher,” I offer.

My teacher, of course, is the perfect maid I admire most—Miyabi-san. She’s never failed to answer any question, so she’s bound to know video editing.

“Y-Yeah, I’ll do my best!” Yukino beams.

Thus, we launched “No-Fake Creampie Sex” on an adult video site, skyrocketing to massive popularity. Riria and I gradually became enigmatic porn stars.