Chapter 29 - Chapter 27

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Kutsuki Suzuka.

If I felt a sense of familiarity with the girl who claimed to be Aika's younger sister, it must have been from that day—the day I stormed into the Kutsuki residence and had Aika's custody transferred to me.

—Wait a minute.

That day, the voice of a girl I heard through the intercom.

Now that I think about it, wasn't that the voice of the girl standing before me—Suzuka-chan?

Shoulder-length, beautiful black hair.

A well-proportioned face almost identical to Aika's.

The short stature typical of an elementary schooler.

The faint swell of budding breasts visible through her T-shirt.

The pure white legs extending from her shorts.

Her appearance was like a younger version of Aika, though if I had to point out a difference, her gaze was slightly sharper.

Physically, they were nearly identical, but perhaps her blunt way of speaking made her seem that way.

Despite the age gap, they were truly like two peas in a pod.

It wasn't that I hadn't considered the possibility of Aika having siblings.

I had vaguely understood that her mother wasn't around.

But I never pried further into her privacy.

If the thirteen years Aika spent in the Kutsuki residence were painful for her, I saw no reason to dredge up those memories.

But let me say this outright:

I never once imagined Aika had a younger sister.

I mean, think about it.

Kutsuki Daijirou, a man who showed his daughter so little affection, who so easily handed over her custody to a complete stranger like me—how could he have another daughter?

He gave up custody of Aika.

Yet he kept custody of another daughter.

Inside, I felt like my guts were boiling.

The girl before me wasn't to blame.

But even so, my emotions were in such turmoil that I might have lashed out at her unintentionally.

"...I'll introduce her, I guess. This is my younger sister, Suzuka, three years my junior. She's the daughter of the man from the Kutsuki family you met the other day—the one actually related by blood."

Her words symbolized an incredibly complicated family dynamic.

Aika no longer referred to Kutsuki Daijirou as "Father."

She likely saw him as nothing more than a stranger now, and even if she harbored any lingering attachment, her true feelings were probably to erase it entirely.

That's why she used the distant phrasing "the man from the Kutsuki family"—it was the language of strangers.

Kutsuki Daijirou had called Aika the "child of infidelity," born from her mother's affair with another man.

In other words, Aika and Kutsuki Daijirou weren't related by blood.

But the girl before me, Suzuka-chan, was.

That was likely the key difference between her and Aika.

Kutsuki Daijirou had said he never loved Aika.

He even declared he had never loved her, not even once.

He gave up custody of Aika but kept Suzuka-chan's—meaning he loved Suzuka-chan as his daughter.

I couldn't even begin to fathom how Aika must have felt, living under the same roof as someone like that.

How much anguish must she have endured, living with a half-sister while bearing the weight of such blatant disparity in affection?

What kind of sisterly relationship could form under such circumstances?

As someone raised in an ordinary household, I had no way of knowing.

"H-H-Hello…"

I managed to greet her like an adult, but she coldly ignored me.

Three years younger than Aika would make her a fifth grader. Yet for her age, she seemed oddly mature—in both appearance and demeanor, and even in the swell beneath her T-shirt.

"..."

My eyes unintentionally drifted to her chest. The outline was unmistakable even through the fabric. I'd heard kids these days develop early, but it seemed what I saw earlier wasn't a mistake.

But why would a girl like this be giving me a morning blowjob?

And how did she get into my locked room?

I'd given spare keys to Mizuki and Anna-chan for various reasons, but there was no way this girl, whom I'd just met today, could have one.

"...Suzuka. This is my father, Kasahara Koichiro. Right now, I'm living as his daughter."

Aika was acting as a mediator between me and Suzuka-chan, but even she seemed confused, as if wondering, Why is she here?

And the atmosphere was undeniably tense.

No wonder—Aika had just witnessed Suzuka-chan giving me a blowjob.

Even if she hadn't seen the act itself, the sight of me with my erect manhood exposed and her sister with white fluid on her lips was more than enough evidence.

"Hmph, I see. So this guy's your new dad? He's more underwhelming than I thought. And his room's unbelievably tiny."

Her words were brutally honest.

Sure, compared to the Kutsuki residence, my place was like a storage closet, and I'd never once considered myself a catch—but that didn't mean I had to hear that from someone I'd just met.

Aika, listening beside me, seemed to feel the same way.

"Th-That's none of your business, Suzuka! I'm not part of that family anymore!"

Right. Aika was no longer a Kutsuki.

Even if her custody hadn't been fully transferred, even if her family register was still tied to that house—

her heart had long since left.

That's why she wouldn't tolerate anyone badmouthing her current home.

It wasn't conceit—anyone who knew Aika would understand.

"And why were you sucking Dad's dick, Suzuka? You're still in elementary school!"

If we were going by that logic, Aika was still a middle schooler, though the impact was slightly less shocking than an elementary schooler doing it.

A girl who should still be carrying a backpack sucking an adult man's penis only accelerated the already criminal undertones of my daily life.

"You do it too, Sis. Every morning. Heck, on your days off, you're having sex with him all day long."

At those words, both Aika and I froze.

How did this girl, who had no connection to Sazanami-sou, know that?

Sure, lately, we'd been having sex even during the day, but we'd notice if someone was nearby.

If it were someone like Mizuki eavesdropping from the next room, that'd be one thing—but there was no way we wouldn't notice someone at the front door. Not to brag, but climbing the old apartment's outdoor stairs without making a sound was impossible unless you were a ghost.

"Hit a nerve, didn't I? Not that I'm trying to trap you or anything, but wouldn't it be bad if people found out you were having sex with this guy? Plus, he's to be doing it with other middle schoolers too."

Just how much did she know?

At the very least, I hadn't had sex with Anna-chan or Mizuki in the past week.

Which meant she must have been well-versed in the sexual affairs of Sazanami-sou for over a week now.

Why?

How?

Such questions swirled endlessly in my head.

"And this guy didn't even resist when I gave him a blowjob. On top of that, he even groped my chest. These budding, eleven-year-old, C-cups."

She grabbed her own chest, emphasizing its swell.

Looking again, her figure was unreal for an elementary schooler.

Her narrow waist and rounded hips were unusually developed for her age—truly, Aika's sister.

"B-Blowjobs are fine even with strangers! I allowed it for Mizuki and Anna too. As long as no one gets pregnant, I won't get mad no matter who he cums inside."

And there it was—Aika's outrageous standards laid bare.

I knew she'd permitted Mizuki and Anna-chan to have sex with me on the condition they took the pill, but I never imagined she'd be okay with me cumming inside anyone.

At this rate, she'd probably even forgive the incident where Mizuki convinced me to let the elementary school track team drink my "penis milk."

Not that I'd ever dare bring that up, of course.

"So that's your 'restraint,' Sis? Then you won't get mad no matter what I do to this guy here, right?"

As she spoke, Suzuka-chan got back on all fours and buried her face in my crotch again.

The white valley of her self-proclaimed C-cups was once more on full display before me.

Despite my better judgment, my manhood reacted, and the elementary schooler began stroking it even more meticulously than before.

Her words and demeanor might have been mature, but her hands were unmistakably small—childlike.

A face still mostly innocent, with only a hint of maturity, now slowly working my hardening penis.

Her technique lacked the skill and allure of Sazanami-sou's three girls.

But the sheer fact that she was only eleven, combined with the eroticism of her disproportionate curves, stirred my primal instincts.

"You love this guy's dick, don't you, Sis? You suck it so eagerly every morning. Like this—"

Suzuka-chan took as much of my glans into her small mouth as she could.

Earlier, I'd been half-asleep, but now I could fully appreciate it—an elementary schooler's mouth was unbelievably soft, far more so than Aika's or the others, and carried an even stronger sense of taboo.

"Feels good, doesn't it? Getting your dick sucked by a grade-schooler—you're a total pervert, aren't you?"

With half my shaft in her mouth, she used her palm to expertly stimulate the base.

Even so, her small hands couldn't fully wrap around an adult man's erect member. That alone proved how much of a child she still was.

And the fact that I was getting off to a child's blowjob meant I really might be the pervert she claimed.

The small tongue traced the ridge and frenulum of my cock.

The mix of my precum and her saliva was more obscene than anything else in the world.

It really felt like I was getting a blowjob from a younger Aika.

That's how identical these sisters were.

But the real Aika could only watch in stunned silence as her little sister serviced my manhood.

"You wanna cum again, don't you? That bitter, thick stuff—right in my mouth."

Like a seasoned prostitute, the elementary schooler seduced me with her alluring hands and mouth.

In truth, her technique was still amateurish. This was likely only her second time giving head.

But the sight of a grade-schooler earnestly stimulating a man's shaft was both endearing and unspeakably lewd.

This was different from the track team girls.

She clearly knew exactly what a penis was for.

"...That's not how you do it, Suzuka. Dad won't cum from that."

Then, as if struck by inspiration, Aika—who had been silently watching until now—knelt beside her sister and began sucking my cock.

"Sis…?"

She took my penis from Suzuka-chan's mouth, sliding it deep into her own with practiced ease.

"Ahh… that's it, Aika."

As expected of a middle schooler. No matter how identical they looked, when it came to sex, the older sister had the edge.

Aika knew my preferences inside out after dozens of sessions.

There was no way she'd lose to a grade-schooler on her first try.

"N-No way. This guy already shot that bitter stuff in my mouth earlier."

That was an undeniable fact.

I'd already ejaculated in Suzuka-chan's mouth, and she'd dutifully swallowed every drop.

"That's because it was your first time. Men take longer to cum after the first round."

Like a teacher instructing her student, Aika began explaining the finer points of fellatio.

How to lick the underside.

How to form a ring with her thumb and index finger to stimulate the head.

How to flick just the tip with her tongue.

How to carefully lick beneath the balls.

Aika didn't just know my preferences—she'd become the perfect girl for them.

She guided me toward orgasm with precision.

Sensing I was close from the way my cock twitched, she paused and offered it back to her sister.

"Here, try it. Dad likes it when you lick here."

Aika pointed to the frenulum. She was right—I loved having that spot licked.

Having it sucked was nice, but being licked like an ice pop made me feel truly worshipped.

"...Fine."

Surprisingly obedient, Suzuka-chan began tracing the sensitive spot with her small tongue.

No matter how bratty her attitude, in this moment, she was just another female.

Whether a grade-schooler or a middle schooler, she was nothing more than a slave servicing me, a male.

"...Yeah. Good."

Praising her sister's technique, Aika joined in again.

Their tongues nearly brushed against each other as they both licked my shaft.

Soon, their rhythms synchronized, their tongues taking turns tracing the same path.

An unending wave of pleasure.

The sight of the two near-identical beauties working in tandem was more sinful than any double blowjob I'd experienced before.

"He's about to cum. Take it all, okay?"

"Take it all? W-Wha—?!"

Unable to withstand the twin assault, I unleashed a second load—even more intense than the first—all over both of them.

The sisters, who had been side by side with their tongues out, were now drenched.

Their pert noses, almond-shaped eyes, pink lips, collarbones peeking from loose T-shirts, and silky black hair—

all of it was instantly painted white with my seed.

"Wh-What is this…?!"

Suzuka-chan's eyes widened in shock.

She must've never imagined a man could produce so much.

I'd cum on faces and hair before, but never had a creampie felt this exhilarating, this dominating.

Two sisters, born from the same mother, now covered in my semen.

And one was a middle schooler, the other an elementary schooler.

Could anything be more taboo?

"Wow… this is… It smells, and it's so sticky…"

With a dazed expression, she stretched the white fluid clinging to her budding chest, staring at her own soiled body.

All her earlier bravado was gone.

Now, she looked every bit like a girl who'd been awakened to sex.

At the very least, she no longer resembled an innocent grade-schooler playing in the schoolyard—though, to be fair, she never really seemed the type to begin with.

"...I get it now. This is why you chose this guy over the Kutsuki family, Sis."

Close, but not quite.

That made it sound like Aika was only with me for sex, but our relationship had started with that encounter in the park.

Both of us had our first sexual experience there, and after all the chaos, we ended up where we were now.

Sex wasn't everything, but condomless intercourse was undeniably a significant part of what bound us together.

"...In that case, I'm staying here with you, Sis. I'll bathe in this guy's cum every day until I figure out why you chose him over the Kutsuki family."

""Huh?!""

That was a line neither Aika nor I could've seen coming.

Hell, maybe even Suzuka-chan herself was surprised by her own words.

"I'm giving you an assignment now."

Abruptly, Suzuka-chan locked eyes with me.

Her cheeks were still plastered with my semen, but she paid it no mind as she delivered her ultimatum with an oddly mature air.

"During this summer break, show me the merits of living with you. If you can convince me, I'll give up on taking Sis back."

In other words, she intended to stay here too.

And just like today, she'd be doing things like giving me blowjobs—or maybe even more.

"But if you can't provide a convincing reason—"

I expected her to say she'd take Aika back no matter what.

But instead:

"I'll have this apartment torn down and take away your home. Then I'll take Sis back. So be prepared."

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