Thank you for the reviews! It really encourages me to write more!

Alright, some of you must be thinking "zomg lolicon!". Let's get this straight: I'm not. I'm writing this 'fic because: 1. I enjoy writing. 2. Kicking Author's block 3. I wanted to write something new, since there aren't many 'fics that talk about Kyon's sister (I even notice some of lack of Taniguchi, Kunikida, and even Tsuruya. Make 'fics for 'em!). About the "abismal" age differences, well there's a difference of 5, 6 or maybe 7 years. I've heard bigger differences before. And if you ask proof, my favorite anime girl of all time is Konata Izumi, which is older than me.

Besides, the description says ImoutoxItsuki, not ItsukixImouto. There's a slight difference there, you know.

Disclaimer: I don't own any of the characters.

The night caught us surprised at the restaurant. Man, I'm really full of all that food I've eaten. It was delicious! And the best thing of all is that my wallet came out unaffected thanks to the victory. I hope the next time Haruhi drags us to another sport event; we face the university again, so we can extort them to give us some money to do this again… Oh God what am I saying?!

Anyway, our group of eleven people was splitting up by the time we were walking back to our houses. Finally, my sister and I also separated from the now-very-small group and started walking to our home sweet home.

I noticed my sister was walking with her head down and a bit nervous. Probably she is afraid of what mom would say to her (and to me) what happened on the match after she had seen her wound. And talking about it…

"How's your knee?"

"Eh? Oh, it's okay. Nothing to worry about."

She's kinda lost in her thoughts. I know my mom can worry too much sometimes but this is too much.

We arrived at home. My mom greeted us asking if we wanted something to eat, but we both rejected her offer. Somehow, her maternal instinct kicked off right now and noticed the bandage covering her knee. She immediately asked what happened to her.

"She fell on the grass. Nothing to worry, my friend has treated it." I replied. If I said to her a tall and strong guy tripped her, my mom would have been furious at me, and maybe she would have grounded me.

My mom patted my sister on her head and we both went to our respective rooms. I'm still full! I changed my clothes to my pajamas so I could drift into dreamland. However, my body still didn't want to sleep and a full stomach doesn't really help.

I picked up one of the books Nagato lent me. She likes science fiction very much, and I can notice that since all the books she had lent me at the moment were all about space. I don't think the Integrated Data Entity or the space itself isn't written like in those books, but she liked to read them nevertheless. Now I know the perfect gift for her birthday, but I ask again: When is her birthday?!

The ship was in the middle of a space battle: The confederacy against the evil empire. The enemy outnumbered them and they had to use all they've got to survive this encounter. The ships were ordered to fire at will. When suddenly, an alien race appeared in the middle of the battlefield and destroyed many ships on both factions. The alien mothership was aiming at our heroes, ready to fire their plasma cannons and then…

…I heard a knock. It's my door. Don't you hate it when you're in the middle of something important to you and an annoying sound interrupts you, like the phone or the bell? Or in this case, a door knock? I do.

I dropped the so-interesting book on my bed and opened the door. It was my sister. She looked pretty worried. Maybe if something emotional happened, she would cry.

"What's it? Do you want my scissors again?" Gosh, a really idiotic question. When does she ask for something mine? She just takes it.

"No…"

"Then what is it? You never knock my door." I giggled.

"Can I talk to you? It's something important."

"Very well," I said. Looks like the topic is pretty serious. I won't deny her talking to me. That would've been very rude.

She was entering my bedroom when Shamisen passed through and looked at her. She felt that the cat was looking at her and turned her head around. "Not now, Shami," she said. Okay, the topic must be pretty damn serious now to not to play with Shamisen.

I sat on my bed. She took the chair and sat across me. She's still with the head looking down, with her hands on her knees. Now I'm the one who is starting to get worried.

"Kyon-kun… I have to tell you something."

"Okay, shoot."

She hesitated at first, but then I looked in her a bit of confidence in her face.

"I… I think I'm in love."

"Nice," I replied. Goodness, her first love! Just the thing that I feel when Asahina-san is close to me! I felt relieved. That was a bit of a shock, to be honest; but not as shocking as Nakagawa confessing his love to Nagato. Speaking of which, I hope he has found another girl who can withstand his ten-years waiting. "Who's the lucky guy?" I asked curiously.

I think I shouldn't have said that. She started to tremble a bit and her hands became fists. This is an obvious sign that something in the phrase "Who's the lucky guy?" isn't right. My brain tells me that the problem-word there is "guy". Yep, that must be it.

Does that mean she likes girls? I don't have a problem with that, but that's just me. She would have to talk to it with our parents and her friends. Or maybe that guy is somehow prohibited to her? That could be a bit complicated, but you know what they say: "Love can sort out the most difficult obstacles". Unless that she likes girls and the girl she loves is somehow prohibited to her. Now that is some material for a manga, as that situation could get really complicated.

"It's… it's…" she mumbled.

We're not going to get far on this conversation if you don't tell me who he or she is. Have more confidence on yourself, sis! I'm sure your love is pure! I'll support you whoever you…

"…Koizumi-kun"

…choose.

"…"

"…"

"Koizumi? Koizumi Itsuki?"

"Yes…"

Of all the boys (and girls) of the world, she chose him.

"Are you really in love with him?"

"Yes… I really, really love him."

"When did that happened?"

"Today."

"Today?!"

"Yes, when he was treating my knee. He had that really friendly smile and he told me in a sweet voice to not to worry, when it really hurt. I… I don't know how can I describe it… it's like love at first sight."

Ah. That sounds familiar to me.

"Yes… I even blushed. I hope he didn't notice."

Well, let's think this through. I don't have a really good friendship with him. Besides, he's older. And the fact that he's an esper and he has to "work" on those closed space things, destroying any shinjins he and his weird group come across. I would be definitely uncomfortable if he and my sister started dating. God knows what esper tricks he would teach her, and they're not "magic" tricks, though for her age she would think of it as that. I'm not sure if I would approve this. I don't know what to say…

"Kyon-kun… are you angry at me?" She said with watery eyes.

I... can't. I can't disapprove her love. Looking at her eyes, I'm really sure this is not a "I fancy him" love. She really loves him. Oh dear God… I just can't! Her love really is pure.

And about the age differences… well, I do love Asahina-san, right? However, she is from the future and I really don't know how old she really is, she just gives me "classified information". Maybe she's younger or maybe she's older than me. All that, and she's my senpai, too. She's just petite, like my sister who is small in comparison of her friends, like Miyokichi.

"No. On the contrary, I'm really happy that you have now someone you love."

"Really?!" She smiled. She was really nervous on how I would react when she would have said: "I love your friend."

"Really. I'll do anything to help if you really love Koizumi." I said. That's where the brotherly love kicks in.

"Thank you, Onii-chan!!!" She jumped out of the chair and hugged me on my belly. I might not admit it most of the time, but I do love my sis. As long as she's happy, I'm happy… well maybe Shamisen is an exception but… we still have our brotherly love. I think she's crying.

"Can I ask you a favor?"

"Yep!"

"Can you tell Koizumi-kun that I really love him?"

Dang! What am I, Cupid?! First Nakagawa, now her! Why am I the love messenger?!

But wait… what I said to her? Oh, right: "I'll do anything to help." Okay, I'm doing an exception because she's my sister. However, the next time someone asks me to send a love letter; I'll hang up, slam the door, run away, etc.

"Alright…"

"Yay, Kyon-kun! You're the best!"

And she left my room jumping in happiness, grabbing Shamisen when she was running to her room.

Well, now how would I explain to that fake-smile guy that my sister loves him?