Vulva Inspection (1)
The next day, from early morning, my younger sister’s voice echoed loudly through the house as she called for me without fail.
“Oppa! Oppa! Oh my god, how long are you going to sleep in!”
“Ugh… Uh… Seoa. You’re up?”
“Up my ass… I’ve been awake for an hour! Hurry up and get ready!”
Of course, when my sister told me to “get ready,” she obviously meant I should prepare breakfast for her. I had no idea when that habit of treating her own older brother like a live-in maid would ever be fixed.
Even while grumbling inside, I got up and made my sister’s breakfast like always. Meanwhile, she was bustling around her room—drying her damp hair fresh from the shower, doing her makeup, and picking out clothes for school.
Aside from seeming a little more sensitive than usual, probably because her period was approaching, it was an utterly ordinary morning like any other.
I yawned widely while preparing the meal, then suddenly realized something and flinched.
Huh…? Come to think of it, why isn’t she making any weird requests today? Has the Common Sense Alteration finally ended?
The Common Sense Alteration that had begun roughly a week ago had tormented me every single day, shifting into new forms: mistaking my semen for lotion and rubbing it all over their bodies, confusing my dick for a toothbrush, drinking my piss thinking it was mineral water, and yesterday even treating my cum like perfume. No matter what form the change took, the ending was always the same—women mercilessly milking my cock dry.
Just as I was starting to get used to that bizarre routine, everything had abruptly returned to normal.
This morning my sister hadn’t thrown a tantrum demanding I top her rice with semen, hadn’t burst in naked to squeeze my dick without warning, and hadn’t sprinkled my cum scent over herself.
…It ended as suddenly as it started. Yeah, well. Let’s just think of the past week as a brief glitch in my life… like a bug popping up in a game…
With a strangely bittersweet taste in my mouth, I finished cooking and called her.
“Seoa, breakfast is ready. Come eat.”
“Ah, I don’t have time, so feed me. Hurry!”
“Hey… How old are you to still ask to be spoon-fed… Sigh.”
I shook my head but still scooped a generous spoonful of rice and side dishes, then personally fed it into her mouth while she rushed through her morning preparations.
She chewed, swallowed in one gulp, then waved her hand as if that was enough.
“No time. I’m done eating. Get me my toothbrush.”
“Uh, yeah.”
The memory of her using my dick as a toothbrush substitute a few days earlier flashed through my mind, making my cock twitch involuntarily. Before she could notice, I hurried to the bathroom, squeezed toothpaste onto the brush, and handed it over.
“Here.”
Without so much as a thank you or even a glance in my direction, she snatched the toothbrush and began brushing with aggressive, battle-ready strokes.
Even then, watching the pink toothbrush slide in and out of her mouth filled me with a strange mix of guilt and depravity that made me shiver.
Finally, after her combat-like preparations were complete, my fully dressed sister grabbed her bag and rushed to the front door, shouting back at me.
“Oppa, turn off the AC in my room! I’m leaving!”
“Uh, yeah. Have a good day.”
I saw her off with a slightly dazed expression, secretly harboring a subtle hope that she might suddenly turn around at the last second with some lewd request.
But she didn’t spare me a single glance. She simply slammed the front door and left.
I stared blankly at the closed door for a moment, then slapped my own cheeks and muttered.
“Haah… What the hell was I thinking about my own sister…? Yeah. Normal is better than a Common Sense Alteration where anything could happen. Let’s just forget the last few days…”
Comforting myself like that, I trudged toward my room. Right then, the front door that had just closed burst open again. My sister, who had run back up the stairs, stood panting and snarled at me.
“Ha, fuck! Hey! If I forgot something, you’re supposed to tell me! You’re seriously useless, damn it!”
“Huh…? What… what did you forget…?”
I asked in a trembling, flustered voice. Seeing her rush back just to explode at me like this, it was clearly something important, yet I couldn’t imagine what. I also had no clue why she was blaming me for it.
As I stood there looking confused, my sister frowned deeply, as if she was fed up, and glared at me fiercely. Even without words, her bug-crushing gaze seemed to scream you useless piece of shit.
I shrank under that intimidating aura, shoulders hunched and trembling as I watched her.
Then, at that exact moment, she suddenly reached under her skirt, yanked her panties down to her knees, and—
“Huh…? W-what…”
“What are you doing?! Hurry up and do the Vulva Inspection! It’s your fault I’m late!”
Still frowning in irritation, she turned around, bent at the waist, and thrust her pale white ass toward me. Cold sweat broke out across my skin as I muttered.
“Ah, no… Vulva inspection…? What the hell is that…”
She pointed at her own pussy with her finger, looking like she was about to explode from frustration.
“What do you mean, what?! It’s common sense that a girl has to get her vulva inspected by the closest man! Skipping it is illegal! So hurry up—we’re late!”
“Uh, ah… R-right… I’ll do it, just wait…”
With no time to think, I rushed forward, grabbed both of my sister’s ass cheeks, and spread them wide. Her deep red vulva filled my vision.
“Haa… haa… haa…”
My sister’s pristine, unused pussy twitched right before my eyes, opening and closing its hole rhythmically like it was breathing, moving slightly up and down.
I had seen her naked body and her pussy several times before, but this was the first time I’d examined the spread-open folds so closely and explicitly.
Now that I could see it clearly, she barely had any pubic hair—if any at all, it was just faint peach fuzz. That meant nothing obstructed my view; I could see every intimate detail.
A tiny clitoris the size of a grain of rice. A urethral opening as small as a needle hole. And a vaginal entrance no bigger than a fingernail. Inside, pink vaginal walls and her hymen sparkled under the fluorescent light.
Gulp…
She must not have washed thoroughly between her legs during her morning shower; white secretions had dried like cheese around the entrance. Her skin still carried a pleasant peach scent from the recent shower, but from deeper inside her pussy rose a sharp, pungent female musk that stung my nose.
Her anus was also completely exposed. Unlike her pussy, it was clenched tight, not even a sliver of space visible, as if she was unconsciously tensing it. The skin around it was flawlessly clean and velvety, without a single hair or blemish. I almost wanted to ask how she maintained it so perfectly.
Of course, no matter how well you wash, the natural scent of fermented miso would still rise if you pressed your nose close—but that only made it more arousing.
Unlike a pathetic loser like me, my sister was smart, popular, and tall. And here I was, allowed to stare at her most secret, precious place from inches away.
…As expected, the Common Sense Alteration is way better than normal… Long live the Common Sense Alteration…
Mouth hanging open, I kept swallowing hard as I buried my face between her ass cheeks like I was about to plant my nose directly on her, breathing hot air all over her.
My sister’s face flushed as she snapped irritably.
“Ah, what are you doing! We don’t have time—hurry up and give me your impression! And stop blowing on my pussy, it feels gross!”
“Uh, yeah…”
I reluctantly pulled my face back, hesitated for a moment, then spoke carefully.
“M-my impression is… um… It’s a really pretty pussy…”
She turned her head to glare at me sharply, eyebrows furrowed.
“…What? That’s it? After staring for that long?”
“Huh…? Then what am I supposed to say…”
When I stammered in confusion, she let out a deep sigh, shot me one last look, then yanked her panties back up and said coldly.
“…Forget it. I’m leaving.”
“Y-yeah. Have a good day…”
But she must have been genuinely upset; she ignored my farewell completely, slammed the door, and left.
…What the hell did she want me to say?
Still confused, I got dressed, hurried out of the house, and headed for the cram school.