I don't own Ore No Imouto Ga Konna Ni Kawaii Wake Ga Nai or any of its characters.

What if My Little Sister Was This Cute?

Prologue 1: Mystery

~~Kyousuke's Perspective ~~

(From a note written in Day 1)

Kirino keep hogging the device to herself.

It doesn't matter to her that neither of us knows how to use it or what he really does. But she trusts the old rusty manual like Snow White.

It's was a confusing device and she might not use it correctly.

But even worse is the possible danger this device brings. What if it'll explode? Or give her a tumor? Or knock her into a coma.

Even if it would work and was indeed safe, the danger of merely possessing such a device not to mention using it could be devastating.

What if Kirino and I will get in prison because of it? What if the original owner will show up and kill us for it? Just imagine the damage and destruction terrorist could do with such a device.

None of these concerns bothers me as much (though they do bother me, a lot) as the things this device will do if a slight malfunction may occur.

We could end up with two Kirinos that if touch will blow the planet or an evil me that will kill millions using his dark powers and I'll be to blame. And there's the always classic fear that it will punch a hole in space-time or something and end the universe.

Maybe I'm just too much into my sister's and my girlfriend's animes.

But this is serious shit.

~~X~~

(Events taking place in Day 0, Afternoon)

Just before we found the device, we were walking home from our schools side by side.

It was pretty rare for us to do that. But today I just felt like it. Well not really.

Today I was supposed to go to Kuroneko's house to help her prepare for an event we were supposed to go in the weekend (sort of a date, but with Saori and Kirino coming with us). But she changed her mind and in a brave decision (at least I considered it brave) told me she had too much work and I would just distract.

So I told her after a minute of disappointment I would go back home with Kirino and maybe we'll stop at the new restaurant near the train station.

She seemed real jealous, I was kinda glad about it, but now I have a strange feeling she wasn't jealous of Kirino. She might have been jealous of me.

I didn't want to tell Kirino that the reason I went with her was since Kuroneko ditched on me, I wasn't sure whether she'll be mad or just mock me.

"You know, I just realized something… you Siscon." She told me while walking in a surprisingly quiet main street.

"What's now?" I sighed and looked at her with a bummed look.

"We don't finish school at the same hour today." She said and looked at me suspiciously.

"I had a few classes canceled today so I went early and ran into you." I told her, I guess I wasn't lying, if I'm considered as an official class canceler.

"No, you didn't. You cut 3 classes to have lunch with at a restaurant with your little sister, you are a Siscon." She glared at me meanly.

"How do you know how many classes I cut?" I asked her, trying to be calmer and more mature than her.

"Because I finish two classes before you, my school day starts ten minutes before yours and the time before I reach your station will be exactly three of your classes." She made tiny hand gestures as she explained her calculations.

"You're a Brocon for even calculating something so advance for me." I tried to be less mature than before and accused her for the same things.

She did appear to blush and stuck her tongue at me; I guess she looked pretty cute when she's mad.

"It doesn't mean I'm like you, you're jealous because it only means I'm smarter." She crossed her arms. Then she started walking slower, leaving me to walk in the front.

To counter that I walked slower myself and told her she's a Brocon because she even knows the different in our schedules. But she just walked slower-er to until she was barely moving. I gave up and walked normally, leaving her way behind.

"Hey wait up, you have the food money!" she yelled at me and rushed as I walked by an entrance to an alley, leading to a parallel street.

And I did come back, but not because of Kirino's request (maybe a little).

It was because of the box, this cardboard box that included the device in it.

But I didn't know that, I was sure I saw the writing on the box saying it belonged to a Doujinshi writer Kuroneko told me about. But when I told Kirino to come and see, she told me the box was of an Imouto game, and it was indeed so.

Back then I thought I was imagining before, but now I'm not sure anymore.

"I'm taking that." She said with a serious look and searched around for witnesses.

"Do you have to?" I asked.

"Yeah, now let's go home already."

"What about the restaurant?"

"This box is too big to carry in a restaurant. And if we'll leave it here, someone would take it."

Arguing with that was pointless.

and so we went home and opened the box.