"Uh, um..."
When my younger sister asked me to show her how I masturbate, I couldn't just blurt out a quick "yes" or "no."
Of course, my penis was overjoyed. I'd been dying to jerk off.
If Matsuri hadn't come into the room, I would probably be in the middle of a wise man's moment right now.
But doing it in this situation... No, no, let's be rational. That's just not happening.
"Th-that's a little... impossible, I think. It's embarrassing, and ethically, well..."
If someone pointed out that I'd already put myself through such a humiliating spectacle before, and that I had no right to be embarrassed, they'd have a point.
But I think there's still a big difference between doing it myself and being forced to do it.
"H-honestly, it's embarrassing. Hee~"
I thought she'd give up right away, but instead, Matsuri seemed oddly fascinated.
She's just a dummy, so she probably doesn't even understand what "ethics" means.
Did I accidentally flip some weird switch? Now I have to just mumble something vague and try to talk my way out of this.
"Anyway, why did you have to spring this on me so suddenly? And why me alone?"
"What are you talking about, you pervert? Why should I have to show you anything?"
Her retort was sharp and defensive.
Of course, this isn't going to turn into some cheesy porn scenario where she says, "Well, then I'll do it too..."
Though if it did, that would be awkward.
I thought she'd just say, "Fine, whatever, pervert," and leave it at that, but she's not moving.
But something about the way she said that... it's bothering me.
"So... you do it alone too, then?"
"Haaah?! Wh-what?! No, I don't!"
"Ugh, but the way you said that..."
"Ugh, shut up! It's fine—just do it already! This is an order!"
That backfired. I think I accidentally provoked her.
An order, huh...? Wait a minute, if it's an order...
"Actually, Miki-chan has forbidden me from masturbating."
"H-huh? What do you mean?"
"Well, she said it's prohibited."
"What the hell? Are you crazy? Does that mean you'll listen to Miki but not me?"
Miki-sama's word takes precedence over all else... That's the kind of thing, right?
Though I don't really know the specifics of those rules.
"You'd have to ask Miki-chan about that..."
"Fine, then I'll tell Miki later."
...Is this for real? Are you seriously going to tell Miki that you forced your brother to masturbate?
Miki might be pleased with that report, but wouldn't I feel utterly pathetic?
"Seriously, Miki-chan, Miki-chan... Hey, hurry up!"
Just moments ago, she was blushing with embarrassment, and now she's relentlessly rushing me.
Apparently, I've annoyed her. Does she resent the fact that I swore loyalty to Miki-chan?
So, technically, I've gained the legal right to masturbate... but am I really going to do it?
The abrupt turn of events has left my penis somewhat hesitant and lacking enthusiasm.
Even I'm not depraved enough to get erect in this situation. Despite the half-angry demands, nothing's standing up.
"Still, just being told to 'get up' like that... it's not that simple. I'm more delicate than I look, you know."
"Delicate? Yeah right! You were so shameless the other time!"
"N-no, that was because Miki-chan was... So now, unless it's something a little... erotic..."
Well, if I think back to what happened last time, I could probably get going...
But that was when I was alone. When someone's watching, it's a whole different story.
My embarrassment wins out, and I just can't get in the mood.
If something were to happen that blew my mind completely, I might be able to go with the flow, but that seems unlikely.
I guess I should just give up...
"Huh? 'Erotic'... like what?"
"Like, for example?" she asked. "You're putting up more of a fight than I expected."
Seeing this, I let my gaze fall from Matsuri's face down to her body as I spoke.
"Could you... show me a little bit?"
If I said something like that, she'd probably scream, "You pervert! Die!" and finally leave this time.
But then...
After a slightly awkward pause, Matsuri lowered her eyes and spoke.
"...You want to see it?"
...Huh? Is this... she's actually going to show me?
Her unexpected reaction threw me off, but if she was willing to show me, that was fine too...
"I-I want to see it..."
"You want to see it, huh? Hmph..."
Matsuri looked slightly smug as she gazed at my face, but then her expression suddenly turned serious.
"Who would show you, you idiot?"
Right.
But damn it, she had me all worked up.
Seriously, this younger sister of mine... If she weren't so cute, I'd smack her.
Her condescending attitude really annoyed me, so I stubbornly retorted:
"Well, actually, based on what I've seen so far, it's not that impressive. We'll see if she even reacts."
I scoffed derisively.
As expected, Matsuri bristled, her eyes narrowing sharply.
"...Just wait here."
But she didn't explode immediately. Instead, she stood up and stormed out of the room.
I have no idea what she went out to do... but whatever. Just don't come back.
Any hope I had for my younger sister was foolish.
The whole premise of me showing her how to masturbate was absurd from the start.
If someone told me to get hard, and I couldn't, that's the end of it. What doesn't work, doesn't work.
Later, I'll just quietly jerk off while remembering Miki-chan's little hands... you know.
Any guy who expected more from his younger sister was an idiot.
The whole idea of me demonstrating masturbation was ridiculous from the beginning.
If I can't get hard even when told to, that's the end of it. What doesn't work, doesn't work.
Later, I'll just quietly jerk off while remembering Miki-chan's little hands... you know.
I never needed anything else in the first place. I really wish she wouldn't keep meddling.
Just as I thought that, Matsuri returned.
She squatted down in front of me, where I was sitting cross-legged on the floor.
"Here."
She held something out to me.
Dangling from Matsuri's hand was a pale pink pair of panties.
Huh?
I was momentarily startled, but quickly regained my composure.
What the hell? Just some underwear? Did she just take these from my dresser?
I don't know how much value she thinks my underwear has, but that's hardly enough to look so smug.
Come on, we're not elementary school kids. Getting all worked up over a pair of underwear...
Internally, I thought, This girl is seriously useless, but I reached out and took the panties anyway.
...!?
Th-this is...
Warm...? Could this be the panties Matsuri was wearing just now...?
Suddenly, my heart starts pounding violently.
I gulp and shift my gaze downward, toward Matsuri's lower body.
If she took these off, that means she's not wearing any panties... right now.
I can't tell from the pajamas, but somehow her buttocks seem even more defined...
My eyes are glued to the space between her bent legs. Through that thin pink pajama fabric, her pussy is practically on full display.
The thought sends a thrill through me. Depending on how you look at it, she's practically in a slight M-position.
This "shit sitting" position is surprisingly erotic. A new discovery.
Gradually, I can feel blood pooling in my groin.
Without thinking, I brought the panties close to my face to check their smell.
"Ah! No! Don't sniff them!"
In that instant, Matsuri lunged forward to snatch the panties away.
I stumbled under the force of her attack and ended up pinned to the carpet.
"What were you thinking, you idiot? Sniffing them like that!"
"W-What else am I supposed to do if I can't sniff them?!"
"S-See them, of course, you moron!"
Matsuri straddled me, slapping at my hands as she tried to grab the panties back.
I instinctively tightened my grip on the underwear, blocking her attempts.
This desperate reaction confirmed it. These were really the panties Matsuri had been wearing just moments before.
Then, I realized something else.
My slightly erect penis was pressed against Matsuri's soft buttocks, being rubbed against them with every movement.
And it felt absolutely amazing.
"Give them back, you jerk!"
Squish, squish, squish.
Every time Matsuri shifted above me to try and retrieve her underwear, the movement sent waves of pleasure through my entire penis.
My cock was fully erect, pressed against my lower abdomen by Matsuri's hips.
What's this? This is insane... It feels so good...
I know her butt is pressed against me, but could her... you know... be touching me too?
And she's not wearing any pants. She's completely bare down there...
The thought of our lower bodies touching through just a thin layer of pajama fabric alone made my penis rock-hard.
"Huh? There's something hard here..."
Matsuri finally managed to retrieve her underwear, and that's when she finally noticed something was amiss.
When she lifted her hips, there it was: a prominent tent bulging from her crotch.
"Wow, it's bulging... You were just saying it was nothing, but you're getting excited just from seeing my underwear!"
"N-no, that's not it..."
There's no way I could get fully erect from just a pair of panties, right?
Even if it was unintentional, you came over here without any underwear and rubbed your butt against my penis. What's your excuse now?
"You're the one who climbed on top of me..."
"Huh? You're getting excited because I'm on top of you? Gross, you pervert. Either way, it's definitely getting hard. Got anything to say about that?"
I'd dug myself into a hole. Ugh, I was speechless.
Just as Matsuri said, regardless of how it happened, I was completely erect.
"...That means you want it, right? Don't you?"
Matsuri stared intently at my swollen pants.
Now I couldn't get out of it by saying I wasn't in the mood or that my penis wouldn't stand up.
"Fine. I'll stay on top of you. Now, just keep it up like that."
Matsuri remained straddling me, slowly sliding her hips backward.
The softness of her buttocks pressed against my thighs.
There's no escape. She really won't let me go until I do this?
Though bewildered, I finally steeled myself. To be honest, I was already incredibly aroused.
In fact, I desperately wanted to pull out my penis and start stroking it right away.
Driven by a rising sense of restlessness, I forcefully yanked down my pants and underwear under Matsuri's watchful gaze.
Finally freed, my penis sprang upward with a soft thud.
"Wow... that's huge..."
Matsuri gazed down at my penis, gasping.
Seeing her innocent younger sister's face, seemingly expecting something, suddenly filled me with an urge to show her what she was missing.
Moreover, my penis was eagerly craving stimulation, reaching its limit of endurance.
Finally, without a shred of shame, I reached out to grasp my throbbing erection.