My Friend's Little Sister Has It In for Me! (友達の妹が俺にだけウザい)

I mean...

I do the voice acting for 05th Floor Alliance's game,

but you let me be part of the group without telling anyone about it.

If you hadn't reached out to me that day just because you knew my brother,

I probably wouldn't be here right now.

MY FRIEND'S LITTLE SISTER HAS IT IN FOR ME!

Ozu and I became friends in middle school.

He was known as an oddball back then.

The science room was his one and only place of refuge,

but rumors spread that he was performing dangerous experiments in there,

so he was left with nowhere to go.

Hey.

Can't you do your experiments at home?

My place isn't really...

If I invent something at my house, will you come over to see it?

Sure, if that's all it takes to keep you doing what you're doing.

It'd be a real shame to let your talents go to waste.

Yeah? In that case, I guess I could do them at home.

That was when I decided to protect Ozu's talents—

and how we became best friends.

After that, when my parents went abroad for work,

I decided to stay here.

What're you doing?

Oh, Aki. Hey.

I was using the size of the floor tiles in the lobby

to work out how many tiles are used in the entire building

and how much they cost.

Just playing with numbers in my head. That's all.

O-Oh... I see.

How'd you end up deciding to do that, though?

I forgot my room key this morning.

I can't get in.

Even as smart as you are, you have no clue how to actually live life.

Well, whatever. Want to wait at my place until your parents get home?

That's okay. She'll be back soon.

What are you doing, Onii-chan?

Hey, Iroha.

I'm glad you're back earlier than expected.

I forgot my key, so...

Oh...

Who's this?

My classmate, Aki. Our neighbor, and my friend.

Hm... Your friend, huh?

Wait, you have a friend?!

I'm Kohinata... Ozuma-kun's friend.

My name's Ohboshi Akiteru. Nice to meet you.

Oh... Um...

I'm his younger sister, Kohinata Iroha.

Thanks for... looking after my brother.

Even though Ozu and I had been friends for a while by then,

that was my first time seeing his sister in person.

In other words, that's how I met the Iroha who would later drive me up the wall,

back when there wasn't a single irritating thing about her.

I never realized you had a little sister.

I guess I never talked about her.

I mean, we live in the same building, and I'd never even seen her before.

It's Otoi-san.

Unusual for her to come to school.

For real? Wasn't she expelled?

No, I heard it was just a suspension.

Ohboshi and Kohinata.

I need to see you both. Behind the gym.

Uh... Sure.

Sorry to drag you both out here.

Want one?

Isn't it against the rules to have candy at school?

You're hilarious.

Who'd be such a stickler for the rules with someone who's been skipping school anyway?

"Skipping"? I thought you were suspended.

I never did anything to get suspended for.

Could I get one of those?

Hey! Ozu!

Sure. Help yourself.

You, too. Here.

Um...

So... why did you ask us to come out here?

Oh, yeah. There's something I wanna ask you guys.

Is that younger student named Kohinata Iroha your sister, Kohinata?

Sure is, unless it's someone with the exact same name.

I see. So what kinda girl is she?

What kind of girl? Well...

Huh, that's unusual.

- What kind of girl is Iroha... - Ozu usually answers any question right away.

Um...

Come on, dude, get it together.

She's your sister, isn't she?

Yeah, but you know... Hm...

Why do you want to know about Ozu's sister?

It's hard for him to answer if he doesn't know the intent of your question.

Oh, that makes sense.

Well, see, this underclassman, Tachibana, was asking me for advice.

- Advice? - Yeah.

It seems some kid named Kohinata Iroha has been showing interest in people like us,

so I wondered what she was like.

"People like us"?

You know what I mean.

The kinda people everyone thinks of as delinquents.

So she's not that type after all, then?

Does that mean you already knew that to some extent?

I guess.

I tried asking around the first-year classes,

but all anyone told me was that she seemed like your typical honor student.

I get that.

She had that air about her.

Not that I'd really know, but...

I thought you and her big brother

might know the real side of her that she doesn't show at school.

Hm...

So, do you want to welcome Ozuma's sister into the fold?

Still thinking about that.

I mean, if she begs, I don't think there's any reason to turn her down.

Does that worry you?

In various ways, yes.

I have my own thoughts about it, too.

Huh.

Well, not that it matters.

This Otoi girl isn't like how I'd pictured her.

She seems more like someone who looks out for others than a delinquent.

But there's something I'm more concerned about.

You okay?

Yeah. Actually... am I?

That question she asked should've been easy to answer.

Really?

Sorry. I'm kinda dense.

Do you and your sister not get along?

It's more like we just aren't... anything.

There's nothing between me and Iroha at all, really.

What? But you were talking like normal siblings yesterday.

Because I forgot my key.

I think that was the first time we'd spoken in two months.

Are you serious?! What kind of siblings are you?!

Is that... weird?

Yes, it's weird!

Haven't your parents said anything to you?

I dunno.

Our dad's been gone for a long time now,

and our mom's so busy, she's hardly ever home.

She doesn't really intervene that much.

Oh.

Even though all I'm getting are fragments,

I'm starting to see that the Kohinata family's situation isn't exactly normal.

I don't think I can just leave things like this.

Hey, Ozu.

Can I come hang out at your place after school today?

We can do some gaming.

Thanks for having me!

The layout's almost exactly like my place.

Huh?

Um, this is the living room... isn't it?

Yeah. Something weird about it?

Don't you have a TV?

This really is where you live, right?

Yeah. I just don't use the living room.

You don't use it?

So you just stay in your room all the time?

Yeah.

Watch your step. If you break anything, I'll get angry.

Maybe try cleaning up in here, then!

It's easier for me this way. I know where everything is.

Besides, they say being in a cluttered room

makes you more likely to come up with unique ideas.

Sounds like an excuse from someone who can't bother to clean up.

Let me see your console. I'll hook it up.

Sure, here.

Wow, you even built your own PC?

It's not that big a deal.

Anyone can do it.

Okay, all set. What do you wanna play?

Huh? Oh, yeah...

You little...

Oh, sorry. Let me step out for a bit.

What, running away? Did I beat you up too bad?

Yeah, right. I just gotta use the bathroom.

I'm gonna find out who Kohinata Iroha is!

That's the whole reason I came here!

Hey...

Is she talking to someone?

Damn, I can't hear well enough.

- I don't know much about that. - Oh, there we go!

Are you sure it's okay for me to go, though?

- People won't think I'm being presumptuous? - Yes! Yes! Perfect!

I like your music, but I don't know much about—

Huh?

Cancel that scream!

It's not what you think! I'm not some criminal!

I'm gonna let you go now. Please don't scream!

I'll let go as soon as you nod yes!

Thank goodness...

Anyway, shall we talk?

Ow...

You're...

Look, I really had no choice!

Wow, that's low.

How do you have "no choice" but to sneak into someone's home and eavesdrop?

Did you fall for me at first sight and turn into a pervert?

Of course not!

You're getting a call from a Tachibana Asagi.

You made me hang up mid-conversation, so she's calling me back out of concern.

Also, give me my phone!

Oh, sorry.