While Taking Care of My Shut-In Little Sister, I Somehow Ended Up Ejaculating Inside a Beautiful Girl - Chapter 30: Yuu Onodera’s Monologue ~And So, He and I Will Be Bound Together~

Chapter 30: Yuu Onodera’s Monologue ~And So, He and I Will Be Bound Together~

Today is the day I’ve been waiting for—the day I’ll be “bound” to him.

My day starts as usual, with my alarm clock playing his recorded voice.

“Yuu? What’s up? Yuu? What’s up? Yuu? What’s up? Yuu? What’s up?”

A refreshing wake-up. I’d love to let it play longer, but today’s morning prep is especially busy, so I reluctantly turn it off.

I hear the chirp-chirp of birds from the roof, stretch big, sit up, and get out of bed.

The fake “morning chirps” end today. I’ve been recording his voice as it changes with age, updating my alarm’s sound—a brilliant idea I came up with and acted on. It’s been six years and two days. This is my sixth alarm clock, and it’s done a great job.

Keep it up… until we start living together, that is.

“Oh? Yuu, up early for a Saturday?”

I pass my mom in the hallway, yawning as she shuffles along.

“I’ve got a date with Ren-chan today ♥. Might be back late… or maybe I’ll stay over… ♥.”

“Oh yeah you did mention something like that.”

Yawning again, Mom heads back to their bedroom, probably after a bathroom trip. Her reaction seems disinterested, but that’s not it. She loves me properly—she should, I’m the child of the man she loves.

“Just let me know if you’re staying over.”

“Got it!”

“…Oh, and that. Yuu, that worked great.”

“…Yeah?”

“Thanks to that, your dad was incredible last night ♪.”

“Seems like it.”

Mom waves airily, satisfied, and slams the bedroom door shut.

From inside, I hear Dad’s surprised yelp. I don’t know what they’re doing, but it’s obvious something is starting. Probably picking up from last night, kicking off the morning in style. Friday night into a weekend off—they’re gonna burn it up.

Their lovey-dovey vibe is heartwarming, but if I linger in the hallway, I’ll hear things I shouldn’t, so I hurry downstairs.

As their daughter, hearing their intimate noises or the bed creaking at night is… complicated. I’m not saying don’t do it, but we’re blood-related, so I wish they’d be a bit more discreet since it makes me cringe.

That’s right—my parents are super close. Compared to other families, maybe too close.

They fight sometimes, but it’s over small misunderstandings, born from caring too much. In the end, they tear up, hug, and make up.

Even with a teenage daughter, they act like lovesick students—a total couple of fools.

To me, they’re the ideal couple. One of my perfect visions for the future.

“I want to marry Ren-chan and be a lovey-dovey couple like Mom and Dad.”

“And live happily with him forever.”

My childhood dreams of being a “magical girl” or a “pastry chef” were fleeting and random, but meeting Ren-chan turned them into a concrete, ambitious ideal—one that’s hard to achieve.

I know it’ll be tough. But I’ll never give up.

To me, this dream is both a dream and reality. It’s an ideal, a future yet to come, but above all, an irreplaceable desire.

I’m on the path to that ideal future.

Ren-chan and I became high schoolers this spring.

Right after starting school, I pushed our relationship forward, moving from “childhood friends” to fake lovers to take that next step.

…But maybe I miscalculated.

A happy miscalculation.

He was looking at me more than I thought. Accepting me.

He was fully aware of my feelings and his own.

That became clear this week.

A date proposal… from him… ♥.

My heart danced so wildly I teared up.

Our first real date, my long-awaited wish.

I have a feeling this date will change our relationship forever.

So today, I’m not holding back.

He’ll probably try to stop himself at some point.

During the act, he’ll worry about losing control.

That’s why, to bind myself to him even deeper, I need to break his “brakes”—just for today.

I already know he’s a sexual powerhouse, a real “stallion.”

His record for self-pleasure, before our current lifestyle wore him out, was seven times. And he stopped only because he remembered some errand, so I bet he could at least double that.

This is great news for me. The more seed my future husband has, the better.

I suspected it before, but it was confirmed during spring break before high school.

That day, I went all out, hitting him with extra-strong sex appeal.

I hoped he’d pounce, but his steel willpower held firm. Impressive.

But I know his groin was reacting a lot. He could’ve jumped me then…

Instead, he went home, locked the doors and windows, closed the curtains, and dove into “baby-making practice.” He moved so fast I had to rush to my room to check the hidden camera footage.

On the monitor, he sat at his desk, immediately firing up his computer.

He dropped his pants right away, but sadly, none of my cameras caught his lower half. Ugh, the camera angles were off! (What a blunder!)

Still, seeing him so frantically jerk off was rare. With his shut-in sister under the same roof, he’s usually cautious.

That was a rare moment of letting his guard down, and when he unleashed his lust alone, it was intense ♥.

And the material he used… ♥ Oh, Ren-chan, so cute! ♥♥♥

Get this… get this! ♥ He was pulling up childhood friend AVs, erotic games, and hentai manga, going at it like crazy, switching genres, working his hand furiously! ♥

Any position, any experience level, staring at childhood friends on his screen…

And since he got like that after seeing me that day, it means… it means… you know, right…? ♥

He was definitely turned on by me, his real childhood friend! ♥

“Mufufu… ♥”

Today, I’ll finally fulfill my wish and share our first time.

We’ll confirm we’re each other’s special someone, the perfect partner, the future spouse.

“Muhehehe ♥… slurp… oops, I drooled…”

So indecent. I can’t let him see this side of me yet.

“But… mufufufu ♥.”

This morning, I woke up early to make breakfast for myself and my parents.

Of course, the main reason was to get ready for my date with Ren-chan—but just as important was this task.

A small, translucent plastic bottle with about fifty milliliters of an energy booster.

No—an energy booster and aphrodisiac.

The key to breaking his “brakes.”

I’ve been working on this potion for a while.

I mixed honey with various stamina-enhancing ingredients, rushing to perfect it for today’s date with him.

Honey, snake extract, pickled plums—common edible stuff. I considered adding obscure Chinese herbs at one point, but since their safety was unclear, I skipped them this time. His seed is too precious. I’ve got to take care of my future husband’s body ♥.

Still, even after rushing to finish it, I realized balancing the effect and taste was tricky. If I mix it into food, it could ruin either the dish’s flavor or the potion’s potency. Ideally, I want him to drink it straight.

And with Mom’s help, the aphrodisiac came together surprisingly easily. Her shocking insights aside, my first-ever aphrodisiac was complete.

It probably wouldn’t have worked without her (though Dad was the guinea pig).

It looks just like honey—viscosity, taste, everything. No one would guess it’s an aphrodisiac or energy booster.

Those sketchy royal honey supplements or syrups? Ren-chan would never touch them.

But thanks to my cooking skills and his trust in me, he’ll eat anything I give him without a second thought.

“…Alright ♥!”

I slip the bottle into my bag. Depending on how the date goes, I might not need to cook. If we stay over somewhere, I can sneak it into a dish or—better yet—give it to him directly. Maybe with a kiss, mouth-to-mouth.

That’d be a hot move ♥.

After getting ready, I check myself in the mirror one last time.

Perfect, pretty, cute—nothing to be ashamed of, no matter where he looks.

Today’s the anniversary of when Ren-chan and I first become one.

“Ren-chan, wait for me.”

With determination in my heart, I head out for our date—

*

“—N… ngh…?”

My eyelids slowly open, and I wake up.

The dim room is lit by slivers of sunlight slipping through the closed curtains.

It’s the day after I finally became one with my beloved Ren-chan.

My internal clock tells me it’s the next day, and I feel a pang of loneliness. That dreamlike time—I wish it could last forever.

To stay in our own world together forever… No, I just need to keep working for it.

I blink rapidly, pulling myself together.

This is his room. Surrounded by his beloved scent, I’m waking up, noticing everything.

The raw smell in the air… and that distinct scent of semen. Proof of our union. Mixed with sweat, but it’s not unpleasant at all. I could breathe it in forever. If I said out loud, “This smells good ♥,” Ren-chan would freak out, so I’ll never say it in front of him.

I’m lying on his bed.

It’s a bit damp.

A shadow falls over me as I lie on my back. My beloved kneels on the bed, gently peering at me.

“Yuu…?”

“Oh… Ren-chan… ♥.”

I’m savoring his scent filling the room, and now his worried face is so close, I almost climax just from that.

“You okay?”

“Yup, I’m fine ♥.”

“Anything hurt?”

“No pain at all ♥.”

“Good, then,” he says, scratching his head.

“Sorry, really… I kinda lost myself… I was acting weird since last night…”

He looks so guilty.

Not knowing what happened is just so cute ♥.

“It’s okay ♥. We got too caught up in our lovey-dovey moment and couldn’t hold back, right? ♥♥♥.”

“Y-Yeah… I guess. I kinda lost control…”

I already knew he doesn’t know about aphrodisiacs, but him falling so easily for the honey, getting wild, and filling me up so much—lucky me! ♥♥♥.

My vagina’s still full of his semen ♥♥♥. I’m so happy ♥♥♥.

“Thanks for filling me up so much ♥♥♥.”

“—! I’m really sorry!”

He glances at my vagina, his face paling despite his obvious erection, apologizing profusely in the cutest way.

No need to apologize ♥.

Oh, I want to conceive his child so bad ♥. Get pregnant ♥♥. I want to be pregnant ♥♥♥.

“Take responsibility ♥♥♥. Make me your wife ♥♥♥.”

“Of course I’ll take responsibility—but you won’t get pregnant… right?”

“I want to get pregnant ♥♥♥.”

“Uh, yeah…”

“Can I stop taking the pill? ♥♥♥.”

“Please keep taking it, I’m begging you.”

His cheeks flush with a shy but serious promise to “take responsibility.”

So cool ♥♥♥. I want to get pregnant ♥♥♥. I really want to stop the pill ♥♥♥. My vagina’s getting wet again ♥♥♥. I want his semen inside me forever ♥♥♥.

“Ren-chan… ♥♥♥.”

“Come on… we went at it like crazy last night, and now we’re—”

I wrap my arms around his neck, and he lets me pull him close.

But as he leans over me, his face close, he freezes in shock.

Squirt.

“—!?”

The sound startles him, and he stares wide-eyed at my vagina.

No need to be so shocked or worried.

It’s just my vagina twitching a bit from our lovey-dovey post-sex cuddle.

“Ugh… wow… sorry, I came too much…”

He sweats nervously, staring at my vagina with guilt.

It’s a little embarrassing… but I kind of want him to keep looking, this weird feeling…

Right now, his semen is still dripping endlessly from my vagina.

“…Nfu ♥♥♥.”

“Yuu…?”

I pull him closer despite myself, and he doesn’t resist, bringing his face near.

“Mmh—smooch—nch…”

“Smooch ♥ Mwah—nnh ♥ Mmm—♥.”

Yesterday, we shared so many firsts, but I’ve fallen in love with kissing and sex. As long as I’m with him, I want our lips—upper and lower—always connected.

But sex has an end. Women can climax, but it doesn’t mean the act stops (unless you pass out, have vaginal spasms, or get injured). Men, though, have ejaculation as a clear endpoint. It calms their desire, softens their penis, and they can’t come again in that state. So, sex is often counted by a man’s ejaculation.

“Nha ♥ Ah—aaah ♥ Kissing… so good… ♥ I love kissing… ♥.”

But kissing has no end. No need to strip, just lips meeting lips to express love, with zero risk of pregnancy.

Though, with my vagina full of his semen, maybe kissing him could get me pregnant… ♥♥♥. If that happened, getting pregnant just from a kiss would be an undeniable miracle of love, straight out of a myth—

…Wait, calm down.

Kissing doesn’t cause pregnancy.

I snap my consciousness back from the kiss-induced high.

“Phew.”

“—Mhah ♥.”

Our lips part as the kiss ends.

It’s reluctant… I don’t want it to stop.

Kissing could go on forever, truly endless, but it feels like a natural pause here.

Still, neither of us wants to pull away, so we gaze at each other, breaths mingling, faces close.

Our lips brush lightly.

It tickles ♥.

“Yuu, I love you.”

“~~~~!?!? ♥♥♥♥”

His serious face hits me with those words of affection.

So unfair.

He says stuff like this sometimes, totally unfair.

He knows exactly how I feel.

So, so unfair…!

When he pulls something this unfair, something starts boiling inside me!!

“W-Well, I love you too, Ren-chan ♥♥♥. I really love you ♥♥♥!”

“I love you so much too.”

“I love you so much ♥♥♥. Ren-chan, I love you so much ♥♥♥!”

“You’re… not mad, are you…?”

“Not mad! ♥♥♥ I love you, Ren-chan, so much ♥♥♥. I’m definitely marrying you! ♥♥♥.”

“Someday, yeah—”

“~~~~~~!?!? ♥♥♥♥”

Ha… I love him ♥.

I love him ♥♥♥.

I’m going crazy… ♥♥♥. No, I’m already crazy ♥♥♥. I’m gonna get pregnant right now ♥♥♥.

My face, my body, heats up from it.

And then, my vagina squirts out more of his semen.

“—!”

He looks at it with a mix of shock and guilt.

I just feel disappointed.

What a waste…

When my womb aches, despite my desperate wish to get pregnant, my vagina tightens and pushes the semen out. It’s leaking… Ren-chan’s semen…

Such a waste, such a shame…

The more we cuddle, the more my womb aches, and despite my longing to conceive, the semen gets pushed out…

“Chuu—”

“—Mmph!? ♥♥♥”

Ren-chan, staring at my vagina, suddenly leans back in and kisses me again.

Another kiss… ♥♥♥.

“—Hah, Yuu—”

“—Nha, Ren-cha—♥♥♥.”

We kiss with matching ragged breaths.

Even the warmth of his breath on my face feels amazing.

That early awkwardness—holding our breath during kisses, worrying about breathing on each other—is gone. We both know it.

We don’t even want to pause for breath.

Once our mouths connect, we don’t want the outside air to cool that space.

Ren-chan and I feel the same… ♥♥♥.

We accept each other completely ♥♥♥.

My feelings, and Ren-chan responding to them ♥♥♥.

…Ah! ♥♥♥♥

“Nnuuuuhhh!?!? ♥♥♥♥♥”

Kissing Ren-chan, already soaring with love, I lose it when his tongue slips in.

My vagina clenches unintentionally, and while kissing, my insides convulse so hard it’s hard to breathe.

A shock, like an electric current, surges through me, and I tremble deeply, climaxing with my whole body.

“Nhhah! ♥♥♥♥ Ah! ♥♥♥ Aah! ♥♥♥ Ah—ha! ♥♥♥ …Nnh! ♥ —Hha! ♥♥♥.”

My vision flickers. He’s already so in tune with me, pulling back before I climax.

It takes a moment to catch my breath.

When I finally breathe normally, he’s sitting on the bed’s edge, smiling at me.

“Yuu, feel good?”

“The best ♥♥♥. Kissing ♥♥♥. Kissing with you, Ren-chan ♥♥♥. I love it so much ♥♥♥!”

“I-Is that so… well… glad to hear it…”

He smiles, embarrassed but refreshed, then looks away shyly—my cool, cute boyfriend ♥♥♥.

My future husband ♥♥♥.

“—Aaaah! ♥♥♥”

“Whoa… damn…”

Oh no!!

Squirt, squirt!

His semen’s spilling out of me!!

“…Guess I don’t need to worry about cleaning it out.”

He sighs in relief, watching my vagina push out the semen.

…Huh? That means—

“—Wait a sec!?”

It hits me, a bit late. That was his plan…!

Despite my desperate wish to get pregnant, Ren-chan absolutely wants to avoid me getting pregnant in high school.

And clever Ren-chan, already figuring out my vagina’s quirks, got me so worked up that I’d push the semen out myself—a diabolical strategy!!

“No… my semen’s leaking out… ♥♥♥.”

As a girl who was a virgin until yesterday, I can’t help but feel it’s such a waste. It’s my true feeling.

…But, oddly, I’m feeling something else too.

Something I didn’t feel until yesterday evening.

Alongside the urgency to conceive his child, to get pregnant fast—

…Relief?

Yeah, relief, maybe. Or peace.

Like, maybe I don’t need to rush, and it’ll all work out.

In the end, Ren-chan and I will definitely be bound together, and it’ll be okay.

Just a little, but I’m starting to feel that now.

…Maybe I was more anxious than I realized.

“If you got pregnant, it’d be a big deal.”

Ren-chan says it coolly. Knowing he’s thinking of me makes me fall for him even more.

This feeling probably has no end.

It’s been growing, strengthening, since we were kids.

I can’t even control it anymore.

Why do I love him so much…? Well, because he’s amazing.

His face, his body, his personality, his scent—I love it all. It’s like I found the one and only person I’m destined to be with on a genetic level.

And the clincher: our deep love. We can care for each other so deeply.

When two people like us come together, it’s this overwhelmingly happy.

I bet no one else knows this feeling.

That’s how much I love Ren-chan.

I’m going crazy… too happy… ♥♥♥.

“Ngh… ♥♥♥.”

Ren-chan gently smooths my messy hair, gazing at me tenderly as I let out a ticklish squeak.

This isn’t just my one-sided love.

His actions show he loves me too.

He expresses his feelings clearly, with words and deeds.

Ha… ♥♥♥ I love him ♥♥♥. So much ♥♥♥.

Cool ♥♥♥. Kind ♥♥♥. I love him so much ♥♥♥.

“…Yuu, you sure you don’t need to take the pill?”

I realize my face is ridiculously giddy. But I’m too late to hide it, and he seems a bit worried, asking about birth control.

“I’ll take it soon… ♥♥♥ —Ngh ♥♥♥ Just wait a bit… ♥♥♥.”

Squirt.

“Damn.”

Ren-chan just stares, saying “damn” as he watches semen spill from my vagina.

Rarely, his vocabulary’s taken a hit. Like his IQ dropped temporarily, proven by his rock-hard erection.

Oh, Ren-chan… ♥♥♥.

“You’re so naughty, Ren-chan ♥♥♥.”

“—! Uh, n-no, I mean…”

Noticing my gaze, he snaps out of it, turns away in a panic, and hides his erection with both hands.

He doesn’t need to hold back. He can thrust that thing into me as much as he wants.

“Wanna… use it again? ♥♥♥.”

“‘Use’!? Come on, don’t say it like that—”

Just as he’s learning my body, I’m learning what turns him on, his kinks.

“Look, Ren-chan, look~ ♥♥♥.”

“Wha—!? S-Stop, you idiot…!”

I spread my vagina with my index and middle fingers, showing off the dripping semen and love juices.

I try opening and closing it with my fingers.

It’s so slick with semen and juices that it slips, not quite working.

Huh…? I thought I could do it better—

“—!?”

…Oh ♥♥♥.

But it totally worked on him ♥♥♥.

Just moving my fingers in front of my vagina, and he’s stiffening, like he’s holding back something.

“Look~ ♥♥♥ Open and close~ ♥♥♥.”

It’s super embarrassing for a girl, but seeing him get turned on makes me so happy, I can’t help acting lewd.

…Oh no ♥. What if I get addicted to this… ♥♥♥.

“No way! Not doing more!”

“Okay ♥♥♥. Then let’s do it tons next time ♥♥♥.”

“—Huh? Oh, uh, glad you get it…”

Today, I’ve been so happy.

My anxiety’s faded.

Because all day, he’s shown me—through words and actions—that he wants to reassure me.

So, not completely, but… at least, about our future.

About us, I don’t have to worry.

My feelings reached him.

He cares about me.

Right now, that alone makes me happy.

“Wanna kiss?”

“…Nfu ♥♥♥. Actually, I was just thinking the same thing ♥♥♥.”

“Really?”

He blushes, looking away for a moment.

Then he meets my eyes with such clear, beautiful ones that my heart skips.

“Here we go, Yuu. One more time—smooch.”

“Smooch ♥.”

We share a quick kiss.

“Good morning, Yuu.”

“Morning ♥, Ren-chan ♥.”

And so, the first day of our lovers’ life comes to an end.

“Haa~ ♥. We really had our ‘morning chirp’ ♥.”

“It’s more like noon than morning now.”

“Then ‘noon chirp’? ♥.”

“Maybe. Do you even say ‘noon chirp’ when the birds aren’t singing?”

“Dunno ♥.”

“Yeah.”

“—Wait, where’re you going?”

“Nowhere. Just cleaning the room.”

“Let’s cuddle more~ ♥.”

“I want to, believe me, but the floor’s sticky, and the sheets are soaked. The sheets might be a lost cause, but I gotta wipe the floor—”

“Boo…”

“It’s fine, you don’t have to help. Just rest, please. I’m dying of guilt here, so let me clean it all up.”

“Ehehe~ ♥. Oh ♥. Where’d you just look~ ♥.”

“Your face.”

“Correction. Where’d you feel guilty about just now? ♥.”

“…”

“Hey, don’t ignore me~!”

“Why’re you covering your crotch with your fingers!? Let the semen out! I’m trying to catch it with the tissues—”

“No~ ♥. I’m keeping it in to let it soak into me~ ♥. Fertilize my body cells~ ♥.”

“That makes no sense! Let go! Hey!”

“No~ ♥♥♥.”