While Taking Care of My Shut-In Little Sister, I Somehow Ended Up Ejaculating Inside a Beautiful Girl - Chapter 73: Light and Shadow (2)

Chapter 73: Light and Shadow (2)

“Shiori! Shiori!! What’s wrong!? Did something happen!?”

Clutching the photo frame with the stunning selfie of a beautiful girl, I turned on the hallway light and strode down the second-floor corridor.

To the target room.

I pounded fiercely on the door of the shut-in’s room.

…First, I couldn’t understand why my sister’s photo was placed in my room.

I was bewildered.

Did the person in the photo place it there, or was it someone else?

And right now, is Shiori even in this shut-in room?

…If she’s here, is it really Shiori?

The answers to these questions would drastically change the situation.

“If you’re there! Answer me! You’re there, right!? Shiori!! You’re in your room, aren’t you!?”

I kept pounding on the door.

…Even I knew this was reckless, something I’d never normally do.

Until now, to avoid stressing my shut-in sister, I’d refrained from knocking altogether. There’d be no answer anyway.

…But now, I wanted a response from her.

Anything to confirm she was safe—

The door was locked.

Unlike my room, which I never lock, my sister always keeps hers bolted.

But right now, I wanted her to show herself.

If not her face, at least her voice.

“Please… Shiori…!”

It’s you in there, right?

The person in this room is my sister, right?

Please—

Answer me—

I pleaded repeatedly.

I wondered why I was so anxious, so desperate.

…Some might dismiss it as pathetic.

But to me, Shiori is my precious sister.

My precious family.

“If it’s you, Shiori… give me some… proof…”

My legs trembled.

Something I instinctively feared flashed through my mind.

No.

Not that.

Could it be… my sister’s already been harmed…?

That I failed to protect her…?

That’s when it happened.

“—!?”

A small note slipped out from under the door, and my eyes widened.

“You’re noisy, Nii-san. I was just about to sleep.”

The note read something like that.

No voice, as usual, but…

“Sh-Shiori…! You’re okay, right!? You’re safe!?”

As I reached for the door desperately, the note was pulled back.

The sound of a pen scratching on paper, likely written on the floor. Another note slid out, continuing the previous annoyed tone.

“That panic means you saw the present, right? How was it?”

“What…”

I was momentarily speechless.

How carefree… leaving the room’s light on… Wait.

Am I overreacting?

Am I the weird one for freaking out like this…?

And a present…?

No doubt, it’s the photo… She snuck into my room at night, left a selfie in a frame as a present…?

“Did you like it?”

“Uh… yeah…”

…Sorry, but I don’t get it.

I can’t comprehend her actions.

I mean, does she realize how worried I was—!

“…”

…No.

Worrying is my choice. Calm down, Ren.

Lashing out because I was worried would be foolish.

Her leaving her room could be a sign of breaking out of her shut-in phase, maybe even done with good intentions. I can’t fault her for the act itself, right…?

She returned to her room after leaving the “present” in mine.

Her sneaking into my room and causing a stir isn’t even the issue anymore.

The fact that she’s showing some change is what matters.

Should I be happy?

Is this really a sign of her coming out of her shell?

Wait, don’t get excited yet.

If I get too eager, she’ll sense it, and she’s sensitive to expectations.

I don’t even know the exact nature of her changes.

She’s had some sort of clash with Yuu recently…

“Shiori…”

No matter how much I think, I can’t reach a conclusion. No clear answer. In this life with no visible exit, I feel something shifting.

“You… are you, right…?”

It’s an undeniably bizarre question, no matter how you look at it.

“Shiori… you’re Shiori, right…?”

To her, it might seem incredibly creepy.

But I had to ask.

“…”

The note slipped back under the door.

…And another came out.

“Yes. I’m your sister. Your non-blood-related, lifelong family.”

“…Good…”

Family.

Her defining herself as that brought me relief.

My legs gave out. I dropped to one knee on the floor.

…What is this?

It feels like I just finished a boxing match.

Not that I’ve ever boxed…

“…”

“Hm?”

I saw the note slip back into the room.

“I’ll tell only you, Nii-san.”

The next note had something unusual written on it.

“Huh…?”

Continuing the previous messages.

At the end of the note.

A familiar address and words I couldn’t ignore…

Words I had to take seriously, with shocking content.

“It’s a secret account. I started one.”

“What are you starting!?”

I snatched the note from under the door, reading it over and over.

…No good.

My eyes slid over the text.

My brain refused to process the words.

…What is she thinking, this sister of mine?

Shiori.

“What’s going on… What’s with this… secret account!? That secret account!?”

“Nii-san, don’t keep shouting vulgar words.”

“It’s you who’s vulgar!”

Another note slid out, with Shiori’s carefree quip.

Originally, a secret account just meant an alternate account, not inherently something lewd.

Like venting frustrations into a tree hollow for stress relief.

Over time, it became associated with girls posting suggestive content for validation.

And now, my sister’s using it in that sense. There’s no misunderstanding between us.

…Our minds are filthy, aren’t they?

“Don’t worry. It’s just for you to see.”

“That’s not the point…!”

…Wait.

Hold on.

A secret account?

My sister…?

…No, wait.

Calling it a secret account is the problem.

If it’s an account only I can view, it’s just a locked account… one restricted to specific people.

But when it’s mostly suggestive photos, it’s still a secret account… No, calm down. It’s not for everyone to see.

My head’s still a mess.

I reread the note several times.

…I memorized the site’s URL string.

My eyes kept sliding over her note’s text.

Still, my brain slowly processed the image data I’d glimpsed, forcing comprehension.

“Why I chose this app:”

“The messaging app we use doesn’t allow photo attachments.”

“Other apps, since you use them to contact others, might be seen by someone if you open them in public.”

“But this social media app, you barely use, right? So I chose it. You can lock the account, and I can send and view photos freely.”

…Wait.

I don’t want to understand what Shiori’s saying, but I do.

It’s a subtle feeling, understanding against my will, throwing me into chaos.

“Come on, follow me. You have an account, don’t you?”

“…”

“I’ve already made this account. I’m not planning to delete it.”

…Well, if she’s made it, no helping it…?

Maybe I should follow to keep an eye on her…

“…”

I pulled out my phone but froze, still holding it.

…What should I do?

“If you don’t view it, I might use this account to make a little pocket money.”

“…Wait.”

If my sister looks like she does in this photo…

…She’d probably be a hit with guys.

If this locked account becomes a public secret account, her beauty would draw a lot of attention.

And with an accidental photo, a background detail could easily reveal her location, and then—

“…!”

I can’t let that leak.

“You’re not following?”

“Fine. I’ll follow.”

I opened the app, searched for her account, found the matching icon, name, and ID, and followed. Follow complete.

Gaining viewing permission, I could now see her account’s content.

≪From now on, I’ll post photos here regularly. Did this message reach you?≫

“Yeah. It arrived. It’s here, but… ugh…”

Right after following, I got a direct message from her. After confirming our accounts, I replied lightly with ≪Yeah≫.

Next, her account posted a photo of a slender hand giving a thumbs-up.

The background was fluffy pajama fabric, likely taken on her knee, wrapped in soft cloth. Very girly, but… it makes me inexplicably worried…

≪This is easy and nice. Let’s use this for our usual communication too.≫

“Huh…? On the phone? With this app? For our usual talks too??”

≪Is that a problem?≫

So, the one-sided note-passing under her door is over?

We’re shifting to phone-based communication…?

“Not our usual messaging app… but this social media app…”

≪You barely use this app, right? Perfect opportunity. Use it just for me.≫

“…”

Basically, our usual messaging app can’t handle photos, which she finds lacking.

Other apps, used for contacting others, risk being seen by someone nearby, causing potential mishaps.

So, she wants this low-use app, where I won’t open it in public, and it supports photos… That’s her logic.

≪Any requests?≫

“Requests?”

≪For photos.≫

“Oh… wait.”

I stopped typing on my phone.

≪Want something naughty right away?≫

“Wait, wait. Hold on. This is all wrong. For daily communication—”

≪? Isn’t naughty stuff part of your daily life?≫

“…Huh?”

…Wait.

Does she think I’m always doing naughty stuff?

Is my image in her mind just… pervy…?

≪You seemed to have a lot of fun with Yuu today too.≫

“…………………………That’s not it.”

Even I could hear the weakness in my denial.

≪You can get turned on by Yuu but not by me?≫

“Look… Yuu and I are dating—”

≪Let me rephrase. Does accidentally seeing naughty photos on your phone count as cheating?≫

“That’s… uh…”

Right. In my mind, just seeing random adult content doesn’t trigger guilt.

…But if it’s deliberately sent to me, by a girl other than Yuu.

It’d almost certainly cross Yuu’s “guilty line” for cheating.

It’d violate the rules laid down by Yuu Onodera, the “law” within her.

…Am I being tested?

What am I supposed to do?

“…Let’s avoid naughty photos.”

≪I won’t.≫

“…Please stop.”

≪I won’t stop.≫

“…You’d be embarrassed too, right?”

≪I’m embarrassed, but it’s okay just for you.≫

“…”

I tried pleading, but I could explain to Yuu and avoid checking the app’s naughty photos—

≪I don’t know what you’re thinking, but…≫

—Yet my sister, as if reading my mind.

≪From now on, I’ll only communicate through this app. If you don’t use it, I’ll be in trouble.≫

“—Ugh…”

Right, right.

This stubborn sister says she’ll use this app for daily communication too.

Thinking about how to navigate this gives me a headache…

Why is she so fixated on showing me her suggestive selfies?

I don’t get it…

I don’t understand what Shiori’s thinking.

But while I can’t grasp her thoughts—

DING-DONG

—At that moment, downstairs in our house.

DING-DONG

“…”

DING-DONG

“…”

CLICK

“…”

Someone opened the front door and boldly walked in.

“Ren-chaaan!♥ Cheating’s a no-no!♥”

A sweet, cat-like voice clearly called out from downstairs.

Creak, creak, the stairs groaned as the speaker ascended to the second floor.

Her tone was gentle, as if chiding me to stop moving forward.

…She’d been listening to everything through the phone.

Yuu Onodera.

Standing at the top of the stairs, the start of the second-floor hallway, she stared—not at me, but straight at the shut-in’s door.

Expressionless.

“Heyy!♥ The shut-in good-for-nothing girl trying to seduce Ren-chan!♥”

Her gentle, restraining tone was laced with an indescribable fury, her words suddenly turning hostile.

“…If you do anything to Ren-chan, I’ll kill you.”

Her voice was ice-cold when she said that.

“Hey, Yuu—!”

“Ren-chan!♥ Are you okay?♥ She didn’t show you anything weird, right?♥”

“No, nothing like that yet—wait! I told you to stay home—!”

“It’s an emergency!♥ I wanted to call the police… but poor Shiori-chan, sneaking into Ren-chan’s room, right?♥ …Right, Shiori-chan? You get it, don’t you?”

When talking to me, her voice was sweet, her smile bright. When addressing my sister—Shiori—it was cold, her face blank.

This emotional rollercoaster was terrifying.

Killing if something happens to me… She can’t be serious, right…?

“…Shiori-chan. Don’t cross that line. If you do, I’ll end this before it even starts.”

“…”

Deep in the shut-in’s room, I felt… something (movement?)… stop.

“…”

“…”

“…”

No messages from Shiori on the app, and with neither Yuu nor I speaking, a tense silence filled the space.

≪Nii-san≫

Breaking the silence, a change appeared on my phone’s app screen.

≪Want to see more of my selfies?≫

“…”

What is she saying at a time like this?

The phone, no longer on a call with Yuu, was now occupied by the app for communicating with Shiori.

“Don’t show Ren-chan weird stuff.”

Yuu glanced at my phone and called out to the shut-in’s door.

≪Nii-san, show Yuu-san the phone.≫

“…Alright.”

With Shiori’s instruction, I had no choice but to comply.

…More honestly, with Yuu looking ready to resort to force, I was too focused on defusing her to think about anything else.

She’d been peeking from the side, but I held the phone so we could both see the screen, looking at it together.

“What’s your game, Shiori-chan?”

Yuu took the initiative, cutting straight to the point.

≪Yuu-san, you just said you’d kill me.≫

“…”

Watching their exchange.

“Both of you, no violence. And no talk of killing or being killed, even as a joke—”

I was on edge the whole time.

≪If Yuu-san takes direct action, I’m fine with that. I’d be killed, Yuu-san would become a criminal, and neither of us would stay by Nii-san’s side.≫

“…What’s that supposed to mean?”

Yuu frowned, glaring at the door.

Utterly baffled.

I felt pretty much the same.

…Yuu killing Shiori.

Or Shiori provoking Yuu to do so.

I absolutely won’t allow either.

≪If both Yuu-san and I exit the stage, some third party would profit, wouldn’t they?≫

“…You know a lot about Tsuki-chan, huh.”

≪It’s related to Nii-san, after all.≫

“…”

Whatever she thought of Shiori’s words, Yuu froze, staring at the screen with a mask-like expression.

“You really are the worst. A scumbag, Shiori-chan.”

≪I’m honored by the compliment.≫

“I’m not complimenting you.”

“…”

What face am I supposed to make listening to this?

Are they both just angry, or what?

…I’d rather not get involved in this tense girl-on-girl exchange.

≪So, I don’t recommend doing anything to me directly. I am his sister, after all.≫

“…If you’re his sister, act like one.”

Yuu spat out the words, her face twisted as if she’d bitten something bitter.

≪Anyway, it’s late, so let’s call it a night. Today, I just wanted to express my daily gratitude to Nii-san, who always takes care of me, with a small token.≫

“…”

Oh, Yuu’s blank stare just shifted to my phone…

She saw the photo frame with Shiori’s selfie.

“A thank-you? That’s a lie. It’s an excuse to start hitting on Ren-chan.”

≪Take it as you will. Good night.≫

“We’re not done! Get out of that room already—!”

…Oh no. Yuu’s tension is spiking.

Before she goes way past her danger zone.

“Shiori-chan! Show your face already—!”

“Good night, Shiori. Yuu, let’s go.”

“—Ren-chan!?”

“Yuu, calm down. It’s late. Let’s sleep.”

“Huh? Uh, okay…”

I grabbed Yuu’s hand and somewhat forcefully led her away.

The photo frame stayed on my desk. That issue’s on hold for now.

But seeing me return to my room, Yuu seemed to think something.

“No way… Ren-chan, you’re still… staying over…?”

“Yeah, I know.”

Ending our sleepover confinement date here would leave bad blood.

Pulling the anxious, troubled-looking Yuu by the hand, I headed back to her house—her room.

…Somehow, I felt.

I understood a bit of what Yuu was worried about.

The issue between her and my sister—Shiori.

I got a glimpse of its true nature.

“Yuu, don’t make that face.”

“Ren-chan…”

As we entered her house and locked the door.

My eyes, adjusted to the dark, caught her trembling, teary gaze.

“R-Ren-cha—”

Her lips parted, about to say something dangerous, my intuition warned.

“—Ren-chan! What are you gonna do about Shiori-chan—!”

“It’s okay.”

“—!?”

Still holding her hand, I answered.

“How can you say that…?”

“…”

Looking up at me, she seemed ready to cry.

Is it really okay?

What’s okay?

Her expression showed she couldn’t understand.

Like a lost child, sobbing without knowing the way home.

“Ren-chan…?”

“It’s okay.”

“Ren… chan…”

Yuu’s words trailed off.

Now, looking up at me, her face turned dreamy.

Her long, glossy black hair swayed.

Behind her long lashes, her deep black eyes sparkled with intensity.

I gazed into that light.

“It’s okay, Yuu.”

“Ren-cha—”

“It’s okay.”

“…!”

And she gazed back into my eyes.

Wide-eyed.

Trying to discern the meaning behind my repeated “It’s okay,” to grasp my true intent.

“…Okay. I trust you, Ren-chan.”

“Thanks.”

—Somehow, she seemed to catch my intent, nodding slowly.

Feeling her grip my hand tightly in return, I climbed the stairs with her.

Back to her room.

“…Nfu♥”

Halfway, I heard a stifled giggle and glanced at her.

She looked down, her lips twisting into a goofy grin.

“…Nfufu!♥”

A bit delighted, she just squeezed my hand.

…Despite everything that just happened.

Yuu now seemed to have a bit of leeway.

“…Ren-chan.”

Yuu called me, covering her mouth with one hand.

I glanced at her sideways.

“Ren-chan. I love you.”

“…Yeah. I love you too, Yuu.”

“…Nfufufu!♥”

“—Whoa.”

Laughing amusedly, Yuu leaned in closer with a bit of force.

Good thing we’d reached the top of the stairs.

“Ren-chan!♥”

“What?”

“Just wanted to call you!♥”

She was as gleeful as a kid who pulled off a prank.

…But somehow.

Despite the peaceful vibe.

I could sense she was scheming something.

“Get ready for tomorrow, too!♥”

“…”

Yup.

She’s planning something again.

“…Yuu? You scheming something?”

“Nfufufu!♥”

“…”

Yuu just grinned sloppily, not revealing her plans.

“…Fine, whatever.”

But thinking about it’s probably pointless.

My girlfriend’s love is intense, her devotion deep, her preparations meticulous, and she’ll bulldoze through any common sense.

“Whatever it is, go easy on me.”

“…♥♥♥ Roger that!♥♥♥”

Saying it like she understood, though she totally didn’t.

“I love that part of you, Ren-chan!♥♥♥”

Yuu beamed like a blooming flower.