So My Little Sister Really Was One

So my little sister really was one...

...What the hell is this app?

It just appeared out of nowhere. Some kind of phishing scam?

I tap it anyway.

Three cards float up on the screen.

The one in the middle pulls at me.

Knock knock.

Shit, that scared the hell out of me.

A knock at the door — I open it to find my little sister standing there.

"What are you doing? Aren't you eating?"

"I'm heading out now."

"You're always so damn slow. Move it a little faster, will you? Hm?"

I head to the kitchen and eat.

...But what the hell was that just now?

View all records, it said.

"Hey, chew your food properly. Stop nibbling like a hamster."

"None of your business."

"Excuse me? Listen to this little punk talk. We're strangers now, are we?"

"Fine, fine, I'll chew. Happy now?"

Mom and my eldest sister don't even bother getting involved.

"Unni, the chapter you posted yesterday was so good. Can't you do a consecutive release for me?"

"...I don't have any banked chapters."

"Aww, that sucks. Reading your web novel is basically my hobby these days."

"Don't beg."

"Sorry, sorry. The readers are always demanding consecutive releases, and now here I am doing it too."

"...I read the review you left, by the way. It was good."

"Hehe, that's what family's for, right?"

Why are you glaring at me, Chae-rin?

"Mom, that new dermatology clinic seems to suit you. Your skin's gotten so much brighter."

"Oh my, you can tell even looking at me?"

"Mm-hm. I want to go with you. Take me along."

"Later. That place is pretty pricey."

"I've been doing tutoring lately, so I have money."

"Save it. You're young and your skin's still firm — don't go thinking about dermatology clinics already. You think your mom can't cover that much for you?"

I finish the meal and head to school.

...It's bugging me.

It's quiet right now, so a quick peek can't hurt.

I open the app.

Only my little sister's name shows up.

Can I actually press it?

I scroll and scroll and it never ends.

No way it lets me read the actual contents too.

I can't even begin to guess what that's about.

What else is in here?

...There's way too much.

It even seems to give me access to her phone gallery, and her call history too.

I should go through it all properly later.

Classes end, I come home, flop onto my bed, and open my phone.

There's a chat exchange from just a little while ago.

Sounds like something to do with her part-time job.

Definitely not tutoring, at least.

...I've watched my share of Shorts and random videos too.

Huh? Wait, this is porn, isn't it?

Well, there's no law saying I can't look at my little sister's... stuff.

Huh. Her taste is weird, though.

She's watched everything under the ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠sun.

Hold on... this one's a little off, isn't it?

What the hell is she mixed up in?

Shit. Something about this feels ominous.

...Found it.

So Kim Yu-jeong's in on it too.

It never even crossed my mind — she's my little sister's best friend, I see her face all the time.

Should I tell Mom?

Right at that moment, there's a knock at my door.

"You in there?"

"Yeah, Mom."

It's already dinnertime.

I go to the kitchen and eat with my eldest sister and Mom.

...No. Knowing Chae-rin's personality, there's no way she'd just come clean and admit it.

And I can't exactly shove this app forward as evidence, either.

"Something on your mind?"

"No, I was just thinking about something."

"If you're tired, go to bed early. And if something's wrong, don't suffer through it alone — talk to your mom. Okay?"

Mom smiles brightly at me.

I can't be the one to shatter the peace of this household.

I just have to keep my mouth shut.

"Chae-rin's been coming home late lately. She doesn't even eat dinner with us anymore."

"Well, she says she's busy with tutoring. Seems like she's saved up quite a bit, too?"

"Her spending worries me. She loves designer goods, travels overseas all the time..."

"That's just how she's always been. You only live once — let her do what she wants."

I eat quickly, shower, and I'm coming out of the bathroom when I run right into my little sister, who's just gotten home.

"Don't block the hallway. Move."

"Why are you so pissed off?"

"Ugh, so annoying."

She shoulder-checks me and brushes past.

...Is she coming back from doing something weird?

I wouldn't care if I hadn't seen it, but now I can't stop thinking about it.

I go into my room, open my phone, and pull up the app.

Was this from just a moment ago?

Her personality's as charming as ever.

So she's heading out there again tomorrow, then?

...Showing up in person would be a bit much, though.

Oh, right — it said I could see her location too.

I just press this, I guess?

Her location pops up. She's at home.

Worrying about it all day has me exhausted.

I'll sleep on it and figure things out tomorrow.

The next morning.

I follow the little sister's location marker on the app.

...She's stopped.

It's close to home.

Unbelievable nerve — running off to a place like this practically next door to our house.

From the outside it looks like a perfectly ordinary building.

Wait — there was that chat log with Kim Yu-jeong.

I spot ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Kim Yu-jeong approaching from down the street and hastily duck out of sight.

...She just went into the same building as my little sister.

Damn it. What the hell are they actually doing in there?

It's still morning, for God's sake.

The records just updated.

No way. Is that old geezer looking at his phone over there really him?

He's grinning ear to ear, a cake box and a designer bag in his hands.

What do I do now?

...The place was called Blue Fish, and the site was Tteokbam.

One search brings it right up, and I click into the site.

Blue Fish... Blue Fish... here it is.

"Soft massage"... that sounds incredibly sketchy.

There are profiles up too.

So Kim Yu-jeong is Eun-byeol? What is with that profile?

Damn it — the old geezer with the cake box and the bag just walked into the building.

...I could just walk away, but something about that doesn't sit right.

Kim Yu-jeong is close with me too, so maybe we can actually talk this out.

I could just call her, but I already know she'd dodge and deny everything.

If I catch her at the shop, though, she'll have to admit to my little sister that I came.

God, I wish they'd just quit.

I dial Blue Fish.

"Yes, sir~"

"Um, could I book Eun-byeol, by any chance?"

"Have you visited any other establishments before?"

"No, this would be my first time."

"...How long would it take you to get here?"

"I'm nearby."

"Then I'll set up a booking for you. With the discount event applied, just prepare 100,000 won in cash and give me a call when you're on your way."

"Yes, understood."

Damn it. I actually booked it.

So my little sister really is a whore.