"Hmm, Miki-chan..."
The next day, after school, I returned home humming Miki-chan's theme (a self-composed tune) as I sprawled on my bed, thoroughly enjoying a manga.
It's hardly necessary to declare this, but I'll say it anyway:
I am currently at the absolute peak of my life.
After what happened yesterday, Miki subjected me to a grueling training session, forcing me to practice hand jobs relentlessly.
She nitpicked endlessly—my grip was too rough, my positioning was off—and my fingers cramped repeatedly. Still, I somehow managed to scrape by with a passing grade.
Even then, Miki tilted her head and said, "You know, it feels different somehow," before we ran out of time before she could demand another round.
Even after parting with Miki, my penis dripped with pre-cum as if in bitter, manly tears, but thanks to all that practice, my skills at pleasuring myself have improved considerably.
On the way home, the thought that I could now send every woman I pass to heaven with my hands brought a smile to my face.
I want to see Miki every day and have sex with her, but since she's a student living at home, there's nothing I can do about the fact that the timing and circumstances never quite align.
For now, we've agreed to meet at my place next Saturday, but I'm not sure I can hold out until then.
I'm more eager for Saturday than ever before. No, "eager" doesn't even begin to cover it.
I'm living for Saturday.
So once again, I've been assigned a no-masturbating penalty.
But when I consider it's all to prolong my enjoyment of sex with Miki, it no longer feels like a punishment. In fact, I'd willingly impose it on myself.
Still, the vigor of my penis is truly remarkable. The mere thought of Miki, even briefly, causes me to become fully erect without warning. That's the one flaw in this otherwise perfect situation.
Ignoring the slight discomfort in my lower body as I read the manga, I glance at the smartphone screen beside my pillow.
Even though there's no notification sound, I find myself checking my phone every few minutes.
The reason is this: Yesterday, I finally obtained Miki's contact information, and my excitement got the better of me. I kept sending her messages whenever I had the chance. But this morning, after I sent "What kind of panties are you wearing today?" I've been met with a solid "read without responding" treatment.
This has been bothering me all day. I've opened the messaging app repeatedly, hesitating over whether to send a follow-up message.
If she just said something like "Gross, die already," that would be perfectly fine. But Miki's stubborn silence is... well, it's unsettling. Though, if I think about it, maybe this is just part of the thrill of romance.
Miki-chan is so matter-of-fact, not saying a single unnecessary word. It makes me wonder if all lover's texts are this curt. But then again, I got a glimpse of an unexpected side of her—maybe she's actually a little bad at communicating through text. That could be understandable.
Or maybe it was because my first message yesterday was "Miki-chan, what cup size are you?" But we've been through so much together that a little sexual harassment like that couldn't possibly make her give me the cold shoulder afterward.
After careful consideration, I typed, "I'll definitely stick to my abstinence," and was about to send it when the door swung open with a clack without even a knock.
Startled, I whipped around to see Matsuri storming in. She must have rushed straight over after school, still in her uniform.
She stomped across the room, her footsteps loud and heavy, and wordlessly thrust her phone screen under my nose like a shogun's seal of authority.
MAJOR ANNOUNCEMENT!!
I'm dating Matsuri-chan's oni-san now~ clap clap
It looked like a conversation with someone... but upon closer inspection, the other person was Miki.
Following that, a rapid succession of replies appeared, likely from Matsuri: "Huh?" "For real?" "You're kidding me?" The messages conveyed her profound shock.
Now, Matsuri stood before me, her hand trembling as she held her smartphone, glaring down at me with a ferocious intensity.
"What does this mean?"
Her expression was so tense that I could tell any careless answer would be disastrous.
Come to think of it, I'd completely forgotten that Miki had said something like, "I'll tell Matsuri-chan myself."
I'd been in a daze since yesterday, barely exchanging a word with Matsuri or my family after returning home. My mind had been consumed by thoughts of Miki, and I hadn't even noticed this...
Wait a minute. Miki's message was crammed with emojis and exclamation points, making her sound so enthusiastic—like a completely different person from when she texted me.
What's going on here? I wanted to ask, but I swallowed the words.
"You told me to ignore whatever Miki said to me, right?"
Matsuri said this, her teeth grinding so hard they seemed to be on the verge of cracking.
Come to think of it, I think she mentioned something like that before...
"You broke your promise, didn't you?"
"W-what promise?"
"This is betrayal, right?"
"Ugh, 'betrayal'? That's a bit dramatic."
I tried to brush it off with a light chuckle, but Matsuri glared at me desperately, refusing to let it go.
Her gaze was so sharp I almost reflexively apologized.
But wait a minute.
When I really thought about it, why should I be yelled at so unfairly?
She might have told me to ignore Miki-chan, but there's no reason I have to do what Matsuri says.
Miki-chan's orders and all that are ancient history now, completely irrelevant.
I don't know what it is, but I almost fell for that superior attitude coming from above.
"First of all, Miki-chan confessed to me first... I just agreed... Is there a problem with that?"
Even as I say it, I know this is bad. This sense of superiority is getting out of hand.
I mean, a beautiful girl confessed to me, and now I'm head over heels for her.
Now even Matsuri can't call me a creepy otaku or a virgin anymore. Those labels are all in the past.
Even now, I'm reading a blatantly otaku manga, but when the reader is a guy with a girlfriend—a non-virgin, real-life person—that just makes it slightly subcultural fare.
I have no weak points.
Meanwhile, Mari had completely lost her advantage over me, and now she was pathetic, not just ridiculous.
Having fully regained my composure, I smiled warmly at her, but Matsuri continued to glare at me with a venomous gaze.
"...You're being deceived."
"Huh?"
"I'm telling you, you're definitely being deceived by Miki!"
...Hmph, heh, heh, hahahaha!
Absolutely absurd. Utterly preposterous.
When cornered, what nonsense people spout! Even now, she's claiming Miki-chan is deceiving me?
Does this mean Miki will suddenly turn out to be some aloof goddess, or a tough-looking man will emerge, or worse, she'll invite me to join some cult?
It's utterly ridiculous. There's no way that could happen.
After all, Miki is head over heels for my penis. She's completely fallen for it, you could say.
No matter what anyone says, the truth remains unshaken. Not even the slightest bit. Absolutely not.
"Huh? W-wait, does that mean something like this... happened before?"
Seeing my extreme agitation, Matsuri recoiled slightly and said, "I-I don't know! We haven't been dating that long, right? We've barely even gone on proper dates, and suddenly we're just... together? That doesn't make any sense!"
Hmm, that's true...
No, wait, that's not right. What am I about to accept?
Miki is completely different from ordinary girls.
By normal standards, two people chatting happily alone in a room and casually holding hands would be equivalent to Miki having sex in the missionary position and getting a creampie.
So, by actual standards, Miki and I have a very pure relationship. That must be it.
Desperately scrambling for excuses in my head, I ignored Matsuri as she put away her phone, crossed her arms, and leaned slightly back, looking down at me with a dismissive air.
"So, what exactly do you like about Miki?"
"T-That... Her... Her cuteness..."
"Haaa? What's that? You just want to get laid, don't you?"
Gulp.
"It doesn't matter who it is, as long as you can get laid, right?"
"N-no, that's not true! I just... I really like Miki-chan! O-other girls don't even register!"
Not that they register, exactly... More like I don't even acknowledge their existence... But I'm not lying.
But with that one sentence, Matsuri's expression changed.
"Hmm. Then prove it."
"Huh? Prove what?"
"That you don't even glance at other girls, let alone get excited by them."
Wait, I never said that!
I think you're misunderstanding something about men's desires.
Before I could even begin to explain, Matsuri had already moved onto the bed beside me.
She gently rested her hand on my shoulder, leaned close to my ear, and whispered:
"You won't get all flustered, will you, oni-san?"
The breath against my ear sent a shiver through me for a moment, but I quickly started laughing.
I don't know if Matsuri thought she was seducing me like some kind of Fujiko-chan, but she didn't exude even a hint of allure.
What's with the "oni-san" act? Do you really think that kind of thing still works on me?
If I were still the virgin I was before I met Miki, maybe. But did she really think such a superficial gesture could affect me now?
"Yeah, and?"
I replied with a calm, smug smile. Matsuri's expression visibly stiffened, and she gave my shoulder a forceful shove before standing up.
She stood there for a while, looking down and lost in thought. Then, as if making a decision, she raised her head firmly.
Matsuri stood facing me where I sat on the bed. Slowly, she slipped her hand under her skirt and smoothly pulled down her underwear.
"Wha...?"
The sudden bold move startled me, and I gasped.
Ignoring my reaction, Matsuri spread her legs and completely removed her panties.
"W-What are you doing...?"
Seeing my flustered expression, Matsuri's previously serious demeanor transformed into a smug, mischievous grin.
She thrust the pale pink panties right under my nose. Without thinking, I took them. They were faintly warm.
"Well? What are you going to do with these panties?"
"W-What do you mean?"
...Use them for warmth?
...Offer a prayer?
As I mentally scrambled for answers, Matsuri sat down beside me again.
My eyes were drawn to the hem of her skirt, which fluttered involuntarily, and I was instantly transported back to the memory of Miki pulling down her pants and biting the elastic band.
Almost immediately, my reliable member pitched a remarkably sturdy tent in my trousers.
Matsuri didn't miss the slight forward lean of my posture.
"Hmm~? Haaah? Isn't that... bulging?"
"Ah! Just a minute!"
Before I knew it, Matsuri's hand had reached my crotch, her fingers brushing against the swollen fabric.
Her hand slowly stroked the surface, her cheeks softening into a satisfied smile.
"Oh my? What's this? If my younger sister were acting like this, I'd suspect she was cheating!"
"N-no! I-I mistook Miki-chan's underwear for something else!"
Even I found my excuse utterly incomprehensible. As if to silence me, Matsuri's hand abruptly gripped the tip with a firm grasp.
The sudden intense stimulation made my body jerk involuntarily, and a gasp escaped my lips.
"Ah..."
"What's wrong, Oni-san? Does it feel good, Oni-san?" Matsuri purred in his ear, deliberately teasing him.
Her fingers pinched the tip of his penis, circling it relentlessly. Even if he didn't want to, his body reacted.
Whether she knew it or not, her moist breath tickled his ear.
"Oh~oh~. You're getting hard even though Miki isn't here? You shouldn't be doing this~"
"N-no, this is..."
"Come on, you really want me to jerk you off, don't you?"
"W-what? N-no, I wouldn't..."
"It's okay. Matsuri will help you jerk off."
Ignoring his protests, she began unzipping his pants.
Matsuri seemed a little clumsy at first, but eventually forced her hand through the hole in his pants and underwear, pulling out his erect penis with a wet slurp.
"Here it is! Now, show me that naughty little head?"
Without my permission, Matsuri pinched the tip of my penis, peeled back the foreskin herself, and revealed the swollen, red glans.
"Oh my, look at that red, swollen tip. If it's in this state, that's definitely cheating, right?"
"Ugh, cheating? That's not..."
"It's fine. I'll keep it secret from Miki. So, can I go ahead?"
Matsuri abruptly released my penis and looked at me with expectant eyes.
But just because she said so didn't mean I could start masturbating right in front of my younger sister.
How did this conversation even get so weird? What the hell is going on here?
"Ugh, fine. I'll do it myself, then."
As if fed up with my hesitation, Matsuri grabbed my shaft with brute force and started stroking it roughly.
The forceful slapping of her palm against the glans was so intense that my hips jerked involuntarily.
"Ah! That hurts!"
"Oh, right. Direct, forceful strokes hurt. What should I do?"
"W-What do you mean?"
There were so many things I wanted to say, but I hesitated to speak honestly.
As I stood frozen, Matsuri's eyes lit up as if struck by a sudden idea. She snatched the underwear from my hand.
"What if we put this on?"
Then, to my astonishment, she stretched the fabric taut and pressed it against me, completely covering my glans.
Already, pre-cum was forming small stains on the fabric, but Matsuri paid no mind as she gripped the underwear tightly and began moving it up and down.
"How's this? Feel good with the underwear?"
Shuu, shuu, shuu. With each stroke, the sound of the fabric sliding against my shaft echoed.
Matsuri, of all people, was using her underwear to stroke my penis.
The bizarre visual effect only heightened my arousal, gradually increasing the sensitivity of my penis.
"Hey, hey, how is it, big brother?"
Matsuri wrapped my glans in her underwear and slowly stroked it, her movements gentle as she peered into my face.
If I let slip something careless like "That feels good," Matsuri would undoubtedly get even bolder.
That said, it did feel good. In fact, it felt so good I was worried I might be developing a new fetish.
But I couldn't give in.
I'd ask Miki-chan for a panty wank next time. For now, I had to maintain my composure as an older brother.
I stubbornly remained silent, enduring the sensation, but my cock betrayed me, gushing pre-cum as if begging for more.
"Ah~ it's getting all slippery~! You really do like it, don't you?~ So let's keep stroking it with your younger sister's panties, hm?"
The pre-cum began to coat the fabric, the wet friction now accompanied by a squelching sound.
Matsuri, now in high spirits, occasionally changed her rhythm, leaned closer, and whispered in my ear.
"See this? Where my pussy was rubbing against you earlier is all wet and squishy now. How lewd."
"Y-yeah..."
"Hey, you're harder than before, aren't you? You pervert. A perverted big brother getting excited by his younger sister's panties?"
"Ah, ah... W-wait a minute..."
"What's wrong? About to come? You can let it go anytime. Just make it squishy and wet in your pants."
To be honest, I desperately wanted to come.
But a sliver of rationality in my mind still questioned whether climaxing like this was really okay.
I was letting her do whatever she wanted, but what exactly was Matsuri trying to accomplish with this...?
"Come on, let it out! Make it go 'pshpsh' like you did for Matsuri."
But any lingering doubts were erased by Matsuri's sweet, breathy whisper right against my ear.
With a final surge of effort, her grip tightened around my penis, and the speed of her hips quickened, the wet fabric of my underwear sliding back and forth with a squelching sound.
"Go on, you can come now! Come! Hurry, hurry! Breathe—let it burst out! Show me! Show me!"
I was already at my limit. Urged on by her voice, I had reached the point where I couldn't stop myself anymore.
As I surrendered to the momentum, I saw Matsuri suddenly pull her smartphone from her skirt pocket with her free hand, but I had no time to think about it.
"Ah, ah! I'm coming!"
Following Matsuri's whispered encouragement, I forcefully released my semen into my underwear.