Matsuri's blatant disgust made the erection I was about to get wither away.
I didn't even need her to say, "Don't you dare show up at a time like this," to know what she was thinking.
Seriously, how did I end up like this? What horrible things have I done in the past?
Matsuri used to call me "Big Bro" when we were elementary school kids, didn't she?
When we started middle school, she began calling me by my name, Haruki. And just recently, when we became high school students, she stopped using my name altogether.
Part of it is probably because she doesn't like that I'm socially awkward and a bit of a nerd. But at its core, Matsuri has always been stubborn and twisted.
Her slightly upturned eyes already betray her personality.
Matsuri hates losing and can't stand not being in charge. She's always trying to put on a show of superiority whenever she gets the chance.
That's why when she tells such obvious lies, it's just hilarious to watch.
On the other hand, if I accidentally give her a little praise, she immediately gets all arrogant, and it's the most annoying thing in the world.
Now, about my younger sister Matsuri... I don't feel like going into all the details here, and it's too much trouble anyway, so I'll just list some random facts.
Height: Around 150 cm. Weight: I don't know, but she's definitely light. Probably around 40 kg.
Black hair in a ponytail, small breasts. Average intelligence, slightly below. Good at sports. Plays basketball. Has a penchant for exaggeration. Can't stand losing. Weak to flattery. Probably not a virgin, since she's had a boyfriend before.
Apart from her face, Matsuri's specs aren't particularly impressive.
Her personality is also terrible, so if her face wasn't cute, she'd be in serious trouble.
And speaking of her face... all her features are small, including her eyes, which are big and round. She looks childlike. You could even call her a lolita.
Apparently, this was her complex, and she used to choose relatively mature clothing, but it never suited her.
Whether she'd given up or simply didn't care since she was just staying home to play today, she was now dressed in a parka emblazoned with a weird cat illustration and a skirt.
And this younger sister was charging at me with full force.
With incredible aggression.
If it came down to a proper brawl, I'd definitely win. I'm not exactly strong myself, but I could never lose to some little girl.
Though the moment I start thinking about fighting my younger sister, I already know I've lost...
Still, when confronted with this kind of intimidation, I've gradually started to get intimidated myself.
It's become a conditioned reflex.
Because it's just plain scary.
"Let's go, Miki. The room is on the second floor."
Matsuri urged the beautiful girl beside me, who was radiating a lovely fragrance.
Her name, apparently, was Miki-chan.
Matsuri ignored me and continued up the stairs.
Miki-chan followed suit. Even as she left, she didn't fail to give me a polite bow.
...Hmm. Truly a well-mannered girl. A world of difference from my younger sister.
If I had to describe her, words like "pure" and "refined" would fit perfectly.
And when she bowed, the glimpse of her cleavage and collarbone...
Still, damn, that girl. To think she has breasts under that.
As I stood dazed, lost in the lingering fragrance, my mother appeared, her heavy makeup scent assaulting my nostrils, snapping me back to reality.
"Hey, Haruki, are you going out?"
"Huh? Oh, uh, yeah."
"That's unusual. Since Mom and Dad will be home late today, pick up some takeout for dinner on your way back. I left money for you."
With that, she hurried out of the house.
About an hour later...
In the end, I never left. I remained in my room.
Even I don't really understand why I'm staying home. No, that's not quite right—I do understand, but it still doesn't make much sense.
The only thing I can say for certain is that if Miki-chan hadn't come with my younger sister, I would definitely have gone out.
For the past twenty-five minutes or so, I've been straining my ears to listen to the voices coming from the next room.
I don't know if Matsuri realizes it, but if you press your ear against the wall, you can hear quite a lot.
What's bothering me is whether they're talking about me.
Matsuri will undoubtedly trash-talk me, but what will Miki-chan say?
And then there's the possibility... they might be having some naughty conversation...
I'm secretly hoping for a catty, giggling exchange like, "What kind of underwear does he wear?" or "Can I feel his boobs a little?"
Well, as a brother, I feel a certain duty to make sure my sister isn't saying anything inappropriate.
Throughout, all I could hear was Matsuri's voice, chattering away in a rather foolish tone. Miki-chan's voice, the one I really cared about, barely registered at all.
It was all trivial stuff like, "You know, I bought this outfit at that store," or "Isn't that guy such a pain?"—the kind of mindless chatter you'd expect someone to save for talking to a wall.
Though to be honest, being stuck pressed against the wall like this, it's a real pain when I get caught in the crossfire.
Then, as if she'd caught me eavesdropping—or maybe it was just a coincidence—Miki started playing music, completely shutting me out.
Now I can't hear anything but the music, and even when I finally peel myself off the wall, the music still follows me.
Besides, being plastered against the wall like this is getting exhausting anyway.
Well, I guess this kind of erotic stuff doesn't really happen in real life, huh...
Sigh. The moment I let my guard down, anger surged up again.
After interrupting my masturbation, this is how she treats me? In the end, my situation hasn't changed at all.
As compensation for the inconvenience, I think it'd be fair for Miki-chan to show me one or two of her panties.
Ahhh... I'm getting so frustrated. This slow torture is driving me over the edge. If I were a DQN, I'd probably commit a sex crime by now.
Alright, fine. If this is how it's going to be...
I'll do it. Half-desperate, I pull out a bottle of lubricant from the deep drawer of my desk.
I've repurposed it into a cosmetic pump bottle for easier use.
At the same time, I boot up my laptop on the desk.
It's decided. While I'm home alone, I'm going to have a wild masturbation session.
Matsuri avoids entering my room.
So the chances of her coming in are practically zero. Absolutely impossible.
Even if Miki-chan ever wanted to come into my room, Matsuri would do everything in her power to stop her. If I were Matsuri, I'd do the same.
The very idea of Miki wanting to enter my room is so far-fetched it's laughable. It doesn't even make sense.
I sit down at my desk, open the browser on my already booted-up computer, and search for "clear-cut erotic high school girl videos."
But nothing decent comes up. What I want right now doesn't show up at all.
Well, then, time for that method.
I start streaming some random porn video, listening only through my headphones.
The music next door is too loud, so I turn the volume up high.
...Miki, it's your lucky day. The fact that you came to my house today, at this very moment, is your fortune.
Consider yourself honored to become my masturbation material.
With my ears plugged by headphones, I picture Miki's face and body.
I let my imagination run wild, reliving the events that just happened.
Full, firm breasts and a shapely rear.
Yes, that rear that was so provocatively thrust toward me.
When I lifted her floral dress, her panties were probably white. Or maybe black, just to tease me.
The arousal I'd been suppressing for so long had left my cock painfully erect.
This... might work. I'm more aroused than I realized.
I casually grabbed the lubricant and pumped it.
Whoops, I squeezed out way too much. Just how turned on am I?
Not wanting to waste any, I spread it evenly across both hands.
Oh, damn. I forgot to peel back the foreskin first. I completely messed up the order.
Truth is, I'm still not fully accustomed to glans masturbation.
This is the third time, no, the fourth time I've really gone for it, right?
Peeling the skin is still quite a struggle.
"You want to bite into it that badly, Miki-chan? Okay, I'll peel it soon..."
Even I cringe at the creepy words that slip out of my mouth, but that only adds to the thrill—a high-level technique.
By talking like this, I'm hypnotizing myself, deepening my immersion.
Right now, in my mind, Miki is kneeling before me, her mouth open, eagerly awaiting my cock.
Hmm? Wait a minute... Why don't I just switch to blowjob audio? A brilliant idea strikes me.
I remove my earbuds, which were blasting moaning sounds.
"Just a moment, Miki-chan... Oh, damn, my hands are covered in lotion."
"...Um, excuse me."
"Let's see, where did I put the blowjob audio..."
"Um..."
I might be imagining things, but I think I hear a voice coming from behind.
Hmm, it sounds a bit like Miki's voice...
Has my imagination finally manifested my thoughts into reality? This could make for some good fantasy masturbation.
Nonchalantly glancing back, I see it: the door is slightly ajar, and Miki's face peeks through the gap, watching me...