Gloomy Outside, Gal Inside ~Dealing with My Step-Sister Isn't Easy~ - Chapter 15: Precious Existence

Chapter 15: Precious Existence

What is my sister to me? If I were to pose that question, I would confidently answer as follows:

“She is a precious existence.”

▽▼

“Hey, what are you doing?”

Facing Ito, who stood in front of Miu, I spoke in a strong tone.

“Ah, Nii-san!”

“Tch! What a bothersome guy has shown up.”

Miu immediately ran towards me upon seeing me, while Ito showed no remorse and muttered under his breath.

In this manner, Miu came to my side as if escaping, but I understand well enough that she doesn’t require any assistance from me, since I know her well… Nevertheless, in the presence of this guy with a bad reputation when it comes to women, I couldn’t stay still for Miu’s sake.

“Ito, have you forgotten what I told you before?”

“Huh? You mean about you being a plain brother and sister? I haven’t forgotten. But I’m still interested. So, I thought I’d give it a try and flirt with her.”

“…”

This bastard… He kept saying how plain we were, yet he acts so cocky.

As people started gathering around, curious about the commotion, Ito continued his words with a confident demeanor, as if accustomed to being the center of attention.

“Perhaps in the future, there might be a pitiful existence who lives without knowing a man, right? So, while I savor that supreme body of hers, I thought I’d teach her a thing or two.”

This guy has been smirking the whole time, finding it amusing.

By the way, not only Miu, but the others around us also looked at Ito with a disgusted expression… They seemed to be Ito’s followers or comrades, and they wore faces that expressed their exasperation, as if saying, “Here we go again.”

Still, they don’t stop Ito. It’s as if they all came from the same mold.

“Hey, Miu-chan. Instead of being by that plain brother’s side, come over here. If you do, I’ll teach you all sorts of things.”

Saying that, Ito reached out his hand toward Miu.

Naturally, I promptly slapped his hand away—Ito clicked his tongue even harder and glared at me. However, Miu spoke in a voice I had never heard before, so low that it surprised me.

“No need—I have wonderful people who can teach me many things. I have no intention of accepting the invitation from someone like you, who seems so frivolous and obviously despicable. Please never approach me again. It’s disgusting.”

“… what?”

Oh… I’m more astonished by how clearly Miu expressed herself.

Ito, with his extremely uncool glasses, turned red in the face and raised his hand, but considering the people around us, he quickly withdrew it.

Internally, I ridiculed him for having that level of common sense. And then, as if making a petty excuse for losing, Ito uttered the following words:

“What a boring girl who can’t appreciate when someone is being considerate. I was going to bed a girl with nothing but big tits… Ah, well, I’ve lost interest.”

I couldn’t help but inwardly sigh at his childishness.

However… Miu is my precious sister… my family. Even though I knew Ito had completely lost interest in Miu, I couldn’t just stand here and let him say whatever he wanted without any retort.

I could just endure it. If I stayed silent here, this guy would only be labeled as the worst person by everyone around us… But I opened my mouth.

“Ito, from my perspective, Miu is an amazing girl.”

“Huh?”

“To me, she is a precious sister—living together with her, I know all the charms she possesses. From your perspective, it may not mean much, and I’m not telling you to reconsider just because Miu has plenty of charms. I’m just pissed off that you said whatever you wanted and then ran away.” 

I continued, taking a deep breath as if to calm myself, and ended with these words: 

“My sister is so adorable. She’s cute, good at cooking, kind… I really want to marry her, that’s how much I care about her.”

“Hah, gross.”

I said everything I wanted to say, in all its creepiness.

By the way, the others who witnessed this exchange seemed to see me as a comforting older brother to my sister, as there was a small applause.  

As for Ito, rumors of his bad reputation with women seemed to have spread, as some of the guys blatantly flipped him off… And I faintly heard whispers among the girls advising each other not to get close to him.

“Well then, let’s go home.”

“…Yeah.”

I left the school with Miu, who gave a somewhat hesitant response.

“…?”

On the way home, I received a message on my phone. It was from Toshinobu. 

Apparently, he had witnessed the earlier exchange and couldn’t stand it anymore, so he decided to confront Ito on behalf of me and Miu, who had been subjected to his remarks. 

However, it seems that Shinozaki-san, a girl from our group, was even more furious than him and verbally tore Ito apart to the point where the other popular kids ran away… I hope everything’s alright.

“Miu?”

“Hmm?”

“Well… You’ve been quieter than usual.”

“…Oh, is that so.”

Since we left school, Miu had been quiet… But when she responded like that, she was already back to her usual self. After a pause, her cheeks slightly reddened, and she spoke.

“I didn’t expect to be told those things when there were so many people around.”

“…That bastard.”

“Oh, I wasn’t talking about that senior. I meant when Nii-san said I was important.”

“Oh, that… Don’t make me conscious of it. Now my back is starting to itch.”

But… I really didn’t consciously think about it.

I didn’t like that Ito was standing in front of Miu, and I didn’t like that he only focused on Miu’s body… I just didn’t like that guy.

…No, is it really just that?

Is it possible that, in any form, I didn’t want to give Miu to anyone else?

“…”

“Why are you staring at me… something wrong?”

“…No, it’s nothing.”

Could it be… Is it something like that?

Naturally, I consider Miu as my precious sister… But lately, I’ve started to doubt if that’s all there is.

(To have lustful thoughts for my sister… Or, to touch her breasts… No, no, it’s wrong no matter who the other person is! Ughhhhh!!)

…For now, I might just want to take a break today.

It’s probably just built-up fatigue… I reassured myself with that thought, and it happened when I was leisurely in my room later at night.

At a moment when I was completely relaxed, Miu appeared in my room.

“Nii-san, take a look!”

“What…!?”

Miu, who had come into the room, was not in her usual attire.

After finishing dinner and taking a bath, she would usually be in her pajamas… Yet, as if to say, “How did this happen?”, Miu was wearing a swimsuit.

She was in a white bikini, her beautiful skin on display, and thin straps barely supporting her H-cup bust.

“This is the one I’m planning to wear this summer. Hey, Nii-san, let’s go to the pool or the beach together this year♪”

“…”

Oh no… By the time I realized it, my body had already reacted.

Miu didn’t immediately leave; for some reason, she lounged around in my room in her swimsuit. How many times had I almost complained as she tried to erode away my self-control?

“Nii~saaan!”

With a loud thud, Miu hugged me from behind.

Is this… some kind of trial?

As I muttered that in my mind, Miu whispered in my ear—with her breath, she sweetly murmured to me.

“The excitement you feel, Nii-san… Is it something you feel for your little sister? Or is it something you feel for a woman?”

“!?”