I'm the Only One Who Doesn't Know My Sister is My "Stepsister" ~The Beautiful Twin Sisters Want to Seduce Their Oblivious Brother~ - 4

Chapter 4: The Gyaru’s Problem

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Kairi pressed her ample chest against me and asked me to listen to her troubles. Gulping, I gave a small nod. 

“A-Alright. I will listen to your troubles, so get off of me and get ready to leave.”

“Yay! I will get ready super fast then!”

And so, Kairi and I decided to go to a family restaurant next to our apartment complex for dinner and to talk about whatever she was bothered about. As I waited for her to change, I couldn’t stop thinking about what she meant by ‘something even more amazing.’ The more I thought about it, the more pink colored my fantasies became. Maybe she would let me do whatever I wanted with her big, soft breasts? Kairi was a gyaru so even though she was only in her third year of junior high school, she must have had a lot of experience. It wouldn’t be entirely impossible for her to…

“No,no,no,no!! Kairi is still my little sister!!! I can’t be thinking about stuff like that to my little sister…!! This is not some ero-doujinshi!!”

As I waited for Kairi to get ready, I stood by the entrance and shook my head furiously to shake the intrusive thoughts away. Then, I heard her running down the hallway with a loud thud-thud. 

“Thankies for waiting~”

Kairi was wearing a black leather jacket over the loose t-shirt she had on earlier. She had a branded black cap on her blonde hair. This casual yet stylish outfit was so typical of gyaru like her. The black color really complemented her blonde hair, making her look pretty fashionable. Walking next to someone dressed so stylishly like her while I was in my dull loungewear made me feel a bit…

“So-Sorry. I think I’m going to change too.”

“Huh? O-Oh. Sure.”

At first, I planned on just wearing my current loungewear since we were only going to a family restaurant nearby, but with my little sister dressed up like that, I felt a bit prideful. I wanted to keep the little dignity I had left as her older brother. So, I returned to my room and put on a black skinny jeans, a white t-shirt and a leather jacket that had been sitting in my closet. 

“Sorry for the wait. Let’s go.”

I said, apologizing to Kairi who had been waiting for me at the entrance and pulled out my keys from my pocket. 

“Hoo~ Onii, you actually have clothes like this even though you’re a total outcast, huh?”

Kairi said. Her eyes opened wide as she pointed at my outfit, seemingly surprised.

“Sto-Stop making fun of me! E-Even though I’m like this, I used to have a girlfriend in junior high, you know!”

“Ah, yeah. You mean the girlfriend that dumped you after using you as her personal wallet for two weeks?”

“Ugh… How did you know?!”

Right. Just as she said, I once had a two-week long relationship with a beautiful girl in my class back in junior high. But she only used me as a personal wallet and to make matters worse, she was the one that dumped me in the end. I had been having a hard time opening up to girls ever since then, to the point that I avoided talking to girls in high school. Being treated like a wallet had left me traumatized. I became distrustful of girls and it wouldn’t be an exaggeration to say I had developed symptoms similar to gynophobia. 

“No, I mean, how do you, someone who’s a year below me, know about the whole wallet thing too?!”

“Onii… Of course I know everything about you. Duh.”

“Huh? Everything about me?”

“…Lo-Look! Let’s just go to the family restaurant so we can talk about my problem!”

Kairi swiftly dodged the question. She opened the door and tugged at my arm, pulling me. Stepping outside, I made sure to lock the door with the key I had taken out earlier before taking down the elevator with Kairi to the first floor.

What’s with Kairi? She’s suddenly rushing me… Is she really that hungry?

I could see the reflection of the two of us standing side by side in the vertical room on the elevator wall. 

“Onii, we look like we’re wearing matching outfits because of the leather jacket you wear.”

“Is that so? But I guess I probably look like the lame version of you because I don’t have the best body.”

“Ahahaha~ True. Can’t say anything about that.”

“Hey, at least try to say something nice to make me feel a bit better.”

I wondered how many years had it been since I last had a normal conversation like this with Kairi. Kairi had become the typical blonde gyaru without me noticing it, but the way she laughed right now reminded me of the same old Kairi. I guess even though her appearance had changed drastically, she was still the same adorable Kairi from back then.

Kairi had become much colder to me ever since she entered junior high. We had never laughed like this ever since then. Sure, Kairi becoming a gyaru and entering her rebellious phase might explain why she became so curt with me. That was typical for someone who had entered puberty, but Kairi wasn’t the only one to blame. I might have been distancing myself from Kairi and Yuuri too. My own insecurities must be the cause too. My little sisters were so beautiful while I was anything but remarkable. My own insecurities widened the rift between us even further. 

“Kairi and Yuuri, you two sure have it good. You both got Mom’s looks and body type.”

“Huh? Well, of course! I was born beautiful! I’m naturally beautiful while you… Well, Onii is still the same mediocre guy as always. I mean, sure, Onii was a prodigy back when you were little but now?”

“Ugh…”

“Onii, you should consider yourself lucky to have beautiful girls like us as your little sisters, you know? No mediocre guy could get the chance to stand next to someone as gorgeous as me.”

Feeling proud of herself, Kairi puffed out her chest, making her voluptuous boobs even more prominent. She had a smug look on her face. Yes. Kairi had been a narcissist ever since she was young. She was always more prideful than anyone else. Well, it was true though. She was a beauty. There was no denying that, but still… That part of her was a bit annoying. 

“We-Well, in the first place, I wouldn’t dare getting close to girls like you and Yuuri if we were strangers! I wouldn’t dare to stand next to someone as flashy as you.”

“Hooo…”

After I said that, the elevator finally reached the first floor. The doors opened and I stepped out into the lobby, but…

“Hm?”

I was starting to walk through the lobby when I noticed Kairi wasn’t following me. Turning around, I saw Kairi was still standing inside the elevator. She just stood there with a blank expression on her face. 

“Kairi? What’s wrong? Did you forget something? Or do you need to go to the toilet?”

“…I-It’s nothing!”

Adjusting her cap, Kairi pulled it even lower before she stepped out of the elevator. She had been acting weird today, so I didn’t think much about this. But still, even though she had such a confident smile on her face a moment ago, she looked really upset for some reason now.

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We finally arrived at the family restaurant and we were shown to a four-person booth. Kairi and I sat across from each other. 

“I’m going to have the demi-glace hamburg steak set. What about you, Onii?”

“Then I will have the steak set with grated ponzu sauce.”

“Understood.”

After placing our orders, I decided to ask her the thing that had been bothering me the most. 

“Be-Before we talk about your troubles… Umm… Could you tell me more about the ‘amazing thing’ you mentioned earlier?”

To be honest, I was really curious about that part. I mean, even though she was my little sister, but of course I would feel curious when a girl with a beautiful figure like her said something like that to me. Even more because it was me, an antisocial virgin.

“Ahahahaha! Geez, Onii! You’re so eager!”

Sitting in front of me, Kairi playfully flicked my nose with her long pink nails. Somehow, this small gesture felt oddly… Erotic.

“Anyway, about the ‘amazing thing’ I mentioned…”

“Ye-Yeah?”

I gulped nervously. But then, I felt oddly parched so I decided to drink the rest of my water. 

“I, with my mouth…”

“Mo-Mouth?”

Do-Don’t tell me…? She-She’s going to…?!

“I’m going to give you a kiss with my mouth.”

“…Huh?”

My mind went completely blank. I was expecting something more… Erotic, but..

Huh? A kiss?

The sudden silence was broken when I brought the glass I had been holding down to the table. The ice cubes in the glass made a loud, clanking sound. 

…Wait.

“So the ‘amazing thing’ you mentioned before is a kiss? Just a kiss?!”

“What? Do you have a problem with that? I-I mean, I only used my finger earlier! I’m going to give you a real kiss with my lips! Come on, don’t make me say something embarrassing twice!”

Thi-This girl… Is her head stuck in a shoujo manga or something? Well, considering that even some shoujo manga nowadays had a more explicit content, maybe she was not even at shoujo manga level. 

“Haah…”

Even though she said ‘something amazing’… Well, she was just a junior high school student after all. Sure, I had never heard anything about her having a boyfriend, but I didn’t expect she was the naive and pure gyaru type. Letting out a disappointed sigh, I slumped my shoulders. 

“Don’t feel disappointed!!”

“But still…”

“The-Then! I-If my problem gets resolved, I will let Onii choose! You can ask me to do anything you want! How about that?!”

E-Even if you ask me that…

My eyes automatically wandered to Kairi’s boobs. I knew it was totally inappropriate to be checking out my own little sister’s body, but I couldn’t help it. 

So are you saying.. I can squeeze those soft valleys?

Squeezing my little sister’s chest was definitely inappropriate, but I wouldn’t be dating any girls in the foreseeable future, if not ever. This might be my last chance to touch a girl’s boobs in my whole life. But still, telling my little sister,”Let me touch your boobs,” made me feel like a total jerk of a brother.

“We-Well, I will think about what I want to ask later. For now, let’s talk about your problem.”

“Huh? Really? You will listen to my problem?!”

“I mean, yeah. That’s why we came to this family restaurant in the first place. Go on, tell me.”

“Uh… Well… Umm… So…”

Seemingly embarrassed, Kairi dropped her gaze to the table and fidgeted. She looked even more embarrassed than before for some reason.

Her problem is even more embarrassing to say than ‘kiss’? 

Well, to be fair, thinking that a kiss was something embarrassing to say was very childish of her. 

“I-I….”

Kairi, who had been hanging her head down, finally looked into my eyes. She then said the thing that had been troubling her while looking me straight in the eyes. 

“I-I want to… I want to get into the same high school as Onii!”

“Huh..?”

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