While Taking Care of My Shut-In Little Sister, I Somehow Ended Up Ejaculating Inside a Beautiful Girl - Chapter 20: If We Crossed That Line, We Couldn’t Stop Until the End (2)

Chapter 20: If We Crossed That Line, We Couldn’t Stop Until the End (2)

Two naked bodies on the bed.

Post-coitus.

I sat there, dazed, watching Yuu sleep as if she’d passed out, her limbs sprawled.

My gaze was drawn to the space between her splayed legs, to her intimate core.

Her lips slowly closed, hiding the pink inside.

From her vaginal opening, now out of sight, thick white fluid continued to ooze.

In short, a sleeping girl, dripping semen from between her thighs.

Utterly erotic, decadent.

If you captured just this image, it’d look like I’d raped her.

“…No, no. Gotta clean out the semen…”

Why is the sight of a woman leaking semen so insanely erotic? I thought, as I covered Yuu with a bathrobe and blanket to keep her from catching a cold.

Then I began the task of removing the semen I’d released inside her drenched core.

Not that I’d shove my fingers in to scoop it out. Her freshly deflowered vagina was too delicate to risk injuring.

The main task was waiting for her vagina to push out the semen, letting it reach the opening, and wiping it with tissues.

If it stopped coming out, I’d have to use my fingers, but as long as it kept flowing, that wasn’t necessary.

“Sorry, Yuu, gonna touch you—whoa… damn…”

I tested the waters, touching her wet vagina, but her tight opening barely accepted one finger. Better to let the semen come out naturally.

To think I’d inserted my penis into such a tight space during sex—it must’ve been a huge strain on her.

Her vagina, though destined to become a birth canal someday, had just lost its virginity. The burden was undeniable. I felt guilty.

“…Still, this is so erotic…”

Staring at her core, wiping the dripping semen with tissues, was a surprisingly time-consuming task.

Naturally, I felt the tissues grow heavy with my semen.

And in the raw, musky scent of our act, feeling her steady pulse, her warmth, watching her peaceful sleeping face, hearing her soft breaths—

“…Come on, have some self-control, my little guy.”

My penis, which had started to soften post-act, was now painfully erect again.

*

Eventually, the semen kept flowing from her thighs with no sign of stopping.

How much had I released, and so deep inside her? I was starting to panic.

Just as my penis, after repeated swelling and shrinking, was finally calming down—

“Mmh…”

Yuu stirred, making a soft sound, her eyes blinking open.

“Yuu, you awake?”

“Huh…?”

Though brief, her sleep was closer to passing out.

Seeing my face as she woke, she seemed confused to find me on the same bed.

“Ohh~ Ren-chan~ ♥”

Lying on her back, she turned her face toward me, her eyes still dreamy, gazing at me with a melted expression.

“What, morning-after cuddles…? Morning, Ren-chan ♥”

With a blanket over her upper body, it’s no wonder she thought that.

“Not morning, though. It’s been, like, ten or twenty minutes since that.”

“That…?”

She tilted her head, looking up at me, but as clarity returned to her eyes, they widened.

“…Oh, ohhh…! ♥♥♥”

Realizing what that meant, she trembled, her cheeks flushing red as she pressed her hands to them.

Her expression shifted to bliss, her teary eyes gazing at me with adoration.

Her lips moved, her smile twitching, as she spoke.

“It’s… not a dream, right…?”

Her quiet murmur was both a confirmation of our reality and a trembling fear that it might be a dream, her voice fragile.

“It’s not a dream.”

To reassure her, I scooped up a strand of her braid spread across the bed.

Her glossy hair, neither black nor dark brown, slipped through my fingers.

“Mmh… ♥”

She twitched, ticklish.

“Feels like a dream… ♥”

“It’s real.”

Feeling my own cheeks soften at her reaction, I took her hand.

Her trembling hand steadied, and she intertwined her fingers with mine, clinging sweetly.

“Ehehe~ ♥♥♥”

With a sloppy smile, Yuu laughed happily.

Her long lashes fluttered shut, a single tear falling from her narrowed eyes.

“Ren-chan ♥”

“What?”

“Just wanted to call you~ ♥♥♥”

“Huh?”

Sitting upright on the bed, I peered into her eyes as she looked up at me, still lying down.

My lips curved into a smile as we locked gazes.

Overwhelmed with emotion, she shivered briefly.

For a moment, she made a strange face, as if holding back a bigger laugh, before slipping back into her sloppy grin.

“Ren-chan ♥”

“What?”

Another pointless call, maybe?

No, this time—

“Ren-chan ♥♥♥”

“What is it?”

I swear I saw countless heart marks in her eyes.

“I love you ♥♥♥♥”

Her smile bloomed like a flower.

“—Yeah. I love you too, Yuu.”

“~~~~~! ♥♥♥♥♥”

She covered her red face with both hands, letting out a wordless cry, writhing on the bed.

“This dream is too happy! ♥♥♥ Too happy to not be real! ♥♥♥♥”

—Then, rubbing her thighs together, she must’ve felt something off beneath her.

“!?”

A dry rustle made her freeze.

“Oh, right—!!”

Bolting upright, she inspected her crotch with the same momentum.

“Ohhh! ♥♥♥”

Beneath her thighs, right under her vagina, layers of tissues were spread out.

The white tissues, soaked with semen, had turned gray, sagging under the weight, pooling with white fluid.

“Ren-chan’s… semen… ♥♥♥”

“…!”

Gazing dreamily at the musky, scented mess between her thighs, Yuu reached out happily.

Her fingers—index, middle, ring—brushed her vagina’s surroundings, picking up my semen and her fluids.

“Mmh—♥”

She scooped the fluid trailing down her skin with her ring finger, bringing it to her eyes.

“…♥♥♥”

She stared at the sticky, stringy liquid for a moment, then, as it dripped, hurriedly brought it to her mouth, licking it off.

Lapping up our mixed fluids from her fingertips, she exhaled a hot breath.

“Semen’s… kinda bitter… ♥”

“—!”

She glanced at me with a sly smile.

Her gesture was too seductive.

“We did it… ♥♥”

“Yeah.”

“All the way… inside… ♥♥♥”

“…Yeah.”

Looking at her sultry smile, it hit me again.

We did it.

We had sex, and I even came inside her.

What happens to us now?

A sense of irreversible consequences stirred in my chest.

“What do we do? ♥♥♥ You’ll take responsibility, right…? ♥♥♥”

Her eyes sparkled, almost glowing with heart marks.

Why is she so optimistic?

Still, I did finish inside her, raw.

I have to take responsibility.

“I’ll take responsibility.”

“What? ♥ Can’t hear you~ ♥ Come closer ♥ Say it so I can hear ♥”

“You…”

I reluctantly lifted my hips and moved beside her.

“…♥”

Even in that brief moment, she didn’t stop her dreamy gaze and smile.

Why is she so relaxed? There’s probably a reason, but…

Even if there’s a real pregnancy risk, she might not care—she might even welcome it at our age. That possibility feels all too real with her.

For now, it’s an uneasy situation.

“So? ♥ Ren-chan? ♥”

“…”

“Say it again? ♥ You’ll take responsibility, right? ♥♥ You will, won’t you? ♥♥♥”

“…”

Yuu happily tilted one ear toward me.

She wanted me to whisper, so I leaned close to her ear.

“Of course, I’ll take responsibility.”

“~~~~~! ♥♥♥♥♥”

She shrank her neck slightly, shivering with delight.

Having fun, huh?

…And as she savored the afterglow of our act—

“Ufufu… ♥♥”

“?”

I noticed Yuu chuckling softly.

“Ufufufu… ♥♥♥”

“What’s up, Yuu?”

She covered her mouth with both hands, giggling as if something was hilarious, so I waited curiously for her response.

“—Hehe ♥ Sorry, Ren-chan. The ‘safe day’ thing I said during sex? It’s actually true. So you can relax ♥”

“…What? Seriously—hey, wait!”

She tried to get off the bed, still pressing tissues to her crotch, but stumbled. I jumped off the bed and caught her in a hurry.

“Careful, that’s dangerous.”

“—Ehehe ♥ Thanks, Ren-chan ♥”

Yuu walked with slightly bowed legs, taking small steps, moving awkwardly.

Maybe she was mindful of the fluid dripping from her, or her core still hurt, or something else.

Either way, I supported her as we shuffled to the desk by the wall, where our bags and discarded clothes were.

She rummaged through her bag on the desk and pulled out her phone.

“Here’s my period tracker. You seemed really curious if today’s actually a safe day.”

“Of course I am. Whether it’s really a safe day—”

“It is.”

She showed me her phone screen, saying it was “proof.”

The screen displayed this month’s calendar, with certain dates color-coded in groups.

An app for women to track their cycles.

“—!”

Seeing today’s date marked in red made my heart skip a beat for a second.

But on closer inspection, it wasn’t a warning color for a fertile day; a note below the calendar indicated it was post-period.

“Oh… phew…”

Thank god. It really was a safe day—but wait.

“Wait a sec…?”

Hold on.

Seriously, hold on, me.

I’m such an idiot.

My head wasn’t thinking straight.

Her dreamy expression, her gaze, her passionate feelings, her provocative body and gestures, the pleasure—I’d been completely swept away.

I’d forgotten something crucial.

A safe day only means it’s less likely to lead to pregnancy, not that it’s impossible.

Basic sex education that anyone our age, anyone about to have sex, should know.

“Yuu!”

“Eh!? ♥♥♥”

I grabbed her shoulders quickly, looking into her eyes.

It’s not over yet.

There’s still a way to reduce the risk of pregnancy—almost certainly prevent it.

“The pill…?”

I swallowed hard, asking nervously.

The contraceptive pill. It also helps ease period pain and discomfort for women.

“Are you… taking the pill or not?”

“…♥”

She smirked, her lips curling.

Her narrowed eyes, like deep black pearls with a glint, gazed at me lovingly.

“What do you think? ♥”

“…”

How long is she gonna keep messing with me?

Yuu tossed her phone onto the bed, then ran one hand over my chest.

As if savoring the tension between us.

“You’re taking it, right?”

“Ufufu… ♥♥”

“Hey.”

She covered her mouth, laughing, then finally answered.

“It’s fine ♥ I’ve been taking it every day at the same time since my period started ♥”

“Phew… you should’ve said that sooner…”

I felt my whole body relax for a moment.

“Sorry~ ♥ Your shocked face was so cute, I couldn’t help it ♥♥♥”

“‘Couldn’t help it,’ my ass…”

You shaved years off my life.

In the end, she was just teasing me for fun.

I let go of her, wiping the sweat from my temple. I’m sweating like crazy.

“Oh ♥ But that face you made… it gave me shivers ♥♥♥”

“…?”

Whatever she felt in our exchange, she leaned closer, reaching for her core, where the tissues had fallen away.

Squish, squelch. She lightly stroked her sex.

Then, scooping up the sticky, stringy fluid with her fingers, she brought it to her mouth and licked it off.

What the hell is with that gesture? It’s too erotic—stop it. My little guy, finally calmed down, is waking up again.

“If you’re gonna take responsibility anyway, we didn’t need protection ♥♥♥ I mean, I knew you’re an honest guy, Ren-chan ♥♥♥ Ugh, I kinda wanted to get pregnant~ ♥♥♥♥”

“Don’t even joke about that. Protection was the right call. Pregnancy while we’re students? That’d mess up our future, wouldn’t it?”

“Ehh~ Really? ♥”

Yuu sounded oddly confident, as if she could see some alternate future where we married as students.

“I bet some people get married as students and build happy families ♥”

“…”

She flashed a mischievous grin.

But right now, I can’t imagine a future with a student marriage, let alone a shotgun wedding.

A stable life is ideal.

Indulging in sex as students, drowning in reckless passion and a decadent lifestyle, getting someone precious pregnant—that’s a future I want to avoid.

When you make the wrong choice in moments like this, you make mistakes. That’s why so many minors end up needing abortions. The heart and body don’t always grow at the same pace.

In that sense, the one who messed up here wasn’t Yuu.

It was me.

She’d been diligent about contraception, while I didn’t even confirm it and came inside her.

It’s clear when you break it down. I’m the one who needs to reflect.

I should’ve been more responsible. I shouldn’t have gotten swept away.

I thought I knew Yuu’s personality—seemingly perfect but prone to going wild in unexpected ways.

I need to get it together.

When it comes to sex and self-control, I have to grow up.

“Good thing, huh? ♥”

“What?”

“I’m on the pill, so I won’t get pregnant ♥ That means you can cum inside as much as you want ♥♥♥”

“…”

“Aren’t you happy? ♥♥♥”

I looked away from her relentless, lovesick grin.

Gotta keep the blood from rushing downstairs.

I just reflected and vowed to grow, and yet…

No… but, if there’s no pregnancy risk, maybe cumming inside as much as I want is fine—wait, no, stop. I just swore to grow and not indulge in reckless thoughts. No more today…

“Hey, cut that out.”

“Hehehe ♥♥♥”

I weakly resisted as Yuu rubbed her crotch against mine.

Seriously, she’s been way too erotic since we got to this hotel.

For me, she’s just too erotic right now.

“—Haha! ♥♥♥”

Seeing my penis harden again instantly, she covered her mouth and laughed.

“Wanna do it one more time? ♥♥♥ My parts can probably handle one more round—mmph!? ♥♥♥”

I silenced her playful teasing with a kiss.

“Mmh! ♥ Ren-chan ♥ Mmph ♥ Ren-ch—♥♥ I love… lick… I love you so much ♥ Ren-chaaan! ♥♥♥”

Satisfying her craving for affection while keeping myself just shy of losing control, I ended the kiss.

“—Ah! ♥ Ren-chan…? ♥”

I looked straight into her reluctant face.

…She’s so damn cute, a beautiful girl.

And my childhood friend who’s loved me so devotedly.

Her love runs deep.

I don’t deserve her.

That’s exactly why I want to cherish her.

I will cherish her.

“Listen, Yuu. No overdoing it. Let’s keep things in check.”

“Boo…”

She pouted, but—

“I wanna do it too, honestly. But more than that, I want to treat you right.”

“~~~~!?!?!? ♥♥♥♥♥”

Her teary eyes widened, and she nodded, breathing shallowly.

She wrapped her arms around my neck.

“—Yeah! ♥ Let’s do it again, Ren-chan ♥♥♥”

“Yeah, we’ll do it again—chu.”

“—Chu! ♥”

We shared a light kiss, bringing this moment to a close.

And so, our first time—losing our virginity to each other—ended peacefully, despite her not-so-funny antics.

We put on bathrobes and cuddled on the bed, indulging in some pillow talk.

“I can still feel Ren-chan inside me ♥”

“…Y-Yeah?”

Yuu kept rubbing her thighs together as she said that, but since these kinds of exchanges could seriously make me (me!) lose control, I shifted the topic to recapping our date, our day’s memories.

We started a little photo show-off session, pulling out our phones.

“We took a ton of pictures, huh?”

“Yeah. Ren-chan, those are from the show?”

“Yup. This one really captures the dolphin’s energy.”

“Wow, you’re right. It’s amazing—the way it leaps from the water, even the splash is so clear…”

Yuu’s photos were all great too. She probably took five times as many as me.

Or maybe I just took fewer? Her three shots of the axolotl were somehow perfectly focused and composed. Kinda frustrating. The second-best pics I took today were of those guys?

“Looking at these, we really snapped a lot.”

“Sorry, I totally overdid it, didn’t I? It wasn’t annoying, was it? Our first real date was so fun, I got carried away…”

“No way, not annoying at all. I’m just glad you had fun.”

“Ren-chan… ♥”

“Let’s go on another date soon.”

“Yeah! ♥”

Her innocent, beaming smile lit up as she scrolled through her phone, grinning ear to ear while recalling the day.

(—Huh?)

As I glanced at the endless stream of photos in her gallery (scrolling forever without reaching the end), I felt a twinge of unease.

Her countless photos from today were almost all either two-shots of us or solo shots of me.

During the date, I didn’t notice—too caught up in looking out for her and planning ahead—and I hadn’t paid attention to what she was snapping. I only just realized how many photos she took.

This was my first time seeing her gallery, and I had no idea what else she had stored.

My unease might just be my imagination or overthinking, but…

Photos from the aquarium, meals, the mall, the park, random moments along the way.

Honestly, everything but us was just background—pretty meaningless background at that. Whether it was us making peace signs, arm-in-arm, or the aquarium exhibits, food on the table, or park playground equipment, the focus was questionable.

Some things—like landmarks that would’ve made great keepsake shots—were overshadowed by us, or just me. It wasn’t about bad photography; the main subjects—us—were crystal clear.

It’s 100% intentional.

…Now that I think about it, the photos that seem to be just of me—aren’t they mostly side profiles, my back, or poses where I’m not looking at the camera?

They’re all angles that feel more like candid shots.

No, scratch that—they’re straight-up sneaky photos.

In those pictures, I’m clearly unaware of her camera.

That’s exactly why, with so many photos saved, I noticed the pattern in how they were taken.

Once I became aware of it, the unease was all I could feel.

Her gallery is definitely weird.

Am I overthinking this? Just being self-conscious? What’s going on…?

“Yuu, how was the aquarium? Weren’t the sea creatures fun to look at?”

“Huh? The aquarium was great! The dolphins were so cute. Why do you ask?”

“No, just…”

For a moment, I wondered if the aquarium was a bad choice for a date, a slight worry creeping in. But it didn’t seem like that was the case.

I think Yuu enjoyed herself today… but maybe next time, I should plan better, ask her where she wants to go first.

Filing away that reflection for later.

“What about the buffet? Was it good?”

“Yup! ♥ Super delicious ♥”

“And the mall shopping?”

“So fun! ♥ We bought clothes together, right? ♥”

“And, uh, the hotel at the end—”

“The best! ♥♥♥ Honestly, the happiest part of the whole day! ♥♥♥”

“…Really? Well, as long as you had fun.”

Sounds like she has no complaints about today’s date.

So it’s not that the places we went were bad or didn’t suit her.

Then, the unease about the photos isn’t about the backgrounds—it’s about the main subject, the focus, and what’s driving it.

“Oh! ♥ By the way ♥”

“Hm?”

“Say cheese! ♥”

“Whoa, out of nowhere?”

She snapped a shot of my surprised face without warning.

At least I’m in a bathrobe now, not naked, so that’s something.

“Kyaa, so cute! ♥ Okay, next is a selfie together! ♥ Come closer, okay? ♥ Snuggle up! ♥”

“Y-Yeah, sure.”

We pressed our shoulders together, bodies close, snapping selfies in bathrobes on the hotel bed. Obvious post-sex photos piled up in her gallery.

“Haaah~ ♥ Which one should I pick? ♥♥♥ The title’s gotta be ‘Our First Time’! ♥♥♥”

What’s with the title?

“Haah~ ♥ It’s like a dream! ♥ I don’t want today to end! ♥ I wish it could last forever! ♥”

Grinning sloppily, she clutched her phone, and I took a moment to study it closely.

Come to think of it—not once.

In all the time I’ve been watching, not once has her phone’s camera made a shutter sound when she took a picture.

With her phone’s default camera and app, that’s basically impossible.

Phone cameras are designed to make a shutter sound to prevent misuse, like sneaky photos, so you can’t turn it off.

To shoot silently, you’d need a third-party app.

“Your photos came out really nice, Yuu.”

“Really? ♥”

“You’re probably just good at photography.”

“Nah, not really~ ♥”

“Well, some people get good by diving in with the right tools. Using a nice camera app or something? Mind sharing?”

“Sure! ♥ Let’s see—”

She swiped her screen, opened the app store, and showed me the description of her installed camera app—

Or so it seemed.

“Uh, wait… huh?”

She froze, noticing something, and closed the app store with a hint of panic.

“What’s up?”

She glanced at me nervously, and I tilted my head, playing dumb with a questioning look.

“Um, uh… it’s acting weird…?”

She plastered on an unnaturally natural smile.

“…”

Am I reading too much into this?

Silent camera apps do have a niche for users who want to snap quietly without bothering others. If she’s using one for that reason, it’s not unthinkable.

…Still, her reaction feels off.

She pulled her phone away, as if hiding the screen from me.

I couldn’t check her gallery anymore.

“Never mind. On second thought, I’m not that into cameras anyway.”

“Right~ ♥ That’s so you, Ren-chan! ♥”

Was that a compliment or a jab? She sounded so desperate.

“Anyway, we just had our first time, so let’s cuddle some more! ♥”

She blatantly changed the subject.

“Yeah, let’s chill here a bit longer.”

I decided her photo-taking habits must be some personal quirk, something I shouldn’t pry into.