Chapter 1: Hey, Can I Kiss You? I Can't Resist My Little Sister's Best Friend's Pleading 1

Chapter 1 ♡ Sex Friend

A naked woman, riding on top of me, Satsuki Harumizu, pleasurably in the cowgirl position, is holding her smartphone to her ear and talking to someone.

One can’t help but be captivated by her friendly and charming smile. Long black hair. Jiggling tits. A toned stomach and alluringly rounded hips. Though I can’t see it in this position, I know her ass is also beautiful, like a peach.

However, what kind of woman talks to someone else on the phone while having sex with a man, I wonder.

Her outstanding figure and beauty, which would outshine any average model, are going to waste.

But well, it can’t be helped. We have that kind of no-strings-attached relationship.

The person on the other end of the call is energetic and loud, and their conversation is perfectly audible to me.

「――TsumuTsumu, how are things on your end? It’s been about a month, have you gotten used to university yet?」

「Hmm? So-so, I guess? Or rather, living alone is harder than university life. It’s tough. A real pain. I can’t get used to it at all.」

「Hahaha. I bet. Living at home is a breeze!」

「…Listening to your carefree voice, Hazuki, is making me feel a little murderous.」

「Scary!? Is living alone really that tough!?」

「Cooking, laundry, cleaning, taking out the trash, shopping, it’s tough because I have to do it all by myself!」

As if to vent her frustration, the naked woman called TsumuTsumu makes her hip movements even bigger. She’s tightly pursing her lips so her moans don’t reach the person on the phone.

「It’s the path I chose, but… it was harder than I imagined…」

「Hahaha. Everything in moderation, okay? TsumuTsumu, you’re such a hard worker, so if you don’t cut corners where you can, you’ll collapse, you know? And if you collapse, no one will be there to help you, okay?」

「I know. I’m properly relieving stress by getting off, so I’m fine!」

Thrust, thrust, she moves her naked body up and down brightly and sensually, and lewd, wet sounds like squish, slurp echo from where our bodies are joined.

Fortunately, it seems the sounds didn’t reach the person on the phone.

She deepens her grin. It’s a somewhat sadistic smile, enjoying the thrill.

Hey hey, you’ve got to be kidding. Give me a break…

――Squish… Gush… Splurt…!

My hopes were in vain; she deliberately started making bolder up-and-down movements to create noise.

Her well-shaped tits bounced, and her suppressed breaths gradually became impossible to hide.

「My stupid older brother lives near your place too, right, TsumuTsumu? He’s probably free anytime anyway, so you can use him to carry your shopping bags. Call him whenever you want, early morning or late night! I, his little sister, permit it! Anyway, I wonder what that idiot brother is doing now? He always, always leaves my messages on read!」

「…………」

The naked woman, who was engrossed in the call, for some reason, stared down at me intently.

With a strange gaze, as if teasing and also reproaching, she wiggled her hips as if wanting to say something. Her sudden back-and-forth movements broke the rhythm, and I was simply at the mercy of the sweet stimulation.

Her warm, wet pussy tightened firmly, milking my erect dick.

It feels incredibly good…! My dick feels like it’s going to melt…

「TsumuTsumu, do you know anything about my stupid brother? Is he actually going to university?」

「Nn… I bump into him sometimes…? He’s super energetic right now too――」

――Thrust!

「Nngh!? He, he seems to be doing fine… yeah…」

She mouths, 「What do you think you’re doing all of a sudden!?」 and glares at me sharply, but I feign ignorance with a nonchalant face.

The one making a call during sex is the one at fault. She shouldn’t complain even if she gets thrusted into.

「Hmm. Well, if he’s actually going to university, then it’s fine. Next time you see my brother, can you tell him to at least send a one-word reply? Mom was worried too.」

「Nn… Okay. I’ll tell him.」

「Thanks, TsumuTsumu! I’m so glad you enrolled in the same university, TsumuTsumu! It’s a big help! Seriously, what’s that idiot brother up to? What’s the deal with having to confirm he’s alive through you!」

「…Maybe he’s in the middle of doing something lewd with a woman right about now.」

「My idiot brother? No way! That’s impossible! I can declare with certainty that it wouldn’t happen even if the heavens and earth were overturned! You know my brother too, right, TsumuTsumu?」

「Well, yeah. Senpai, when I visited Hazuki’s house, he was so distant, totally giving off that ‘I’ve never dated a woman’ virgin vibe, right? In the first place, his face is a total virgin face――Kaah!?」

――Smack! Smack! Smack! Smack!

「If a beauty like you, TsumuTsumu, who could make models jealous, came to visit, my idiot brother with his full-blown virgin aura would naturally become distant and hide in his room, right? If he’s a virgin brother, it can’t be helped, it can’t be helped.」

「Nn… Nngh… Ah… R-really, I wonder… Aahn…!」

「That’s right… Hey, TsumuTsumu, what’s wrong? Aren’t you breathing heavily?」

「!?」

Th-this is bad! Did she find out we are having sex!?

But, intoxicated by an indescribable thrill, I couldn’t stop my merciless thrusts from below. I deeply pierced her body with my thick, erect dick as if driving a stake.

She, slightly flustered by the comment from the person on the phone, also didn’t stop thrusting, matched my rhythm as if used to my movements, let out her pained-sounding voice without holding back, and tried to cover up the fact that she was in the middle of sex.

「A-actually, since a while ago, I’ve been, working out, in the middle of… Nngh! I’m, working on my abs…! Planks, are tough…! Nngh! I can’t put any strength into my body…!」

「Woow. Sorry for calling while you were working out. By the way, TsumuTsumu, did you gain weight?」

「Stop it! Seriously, stop it! Right now…! Ah! Nhaah!? Nn… Nngh… Ah… Ah… I can’t… I can’t anymore…!」

「Wooow… Just listening to your voice sounds so lewd! TsumuTsumu’s moans are super hot! I think I’m starting to feel something naughty…」

It seemed the voice of the person on the phone wasn’t reaching her.

She held the smartphone far from her ear, supporting herself with one hand behind her, her naked body arching back as she moaned extravagantly. Not just her voice, but her hip movements were also lewd. Her hips thrust out with convulsive jerks, showing off their obscene connection.

Her skin was flushed a cherry blossom pink. Neatly trimmed, raven-black pubic hair. Wet pussy lips. White, frothy love juice. Her beautiful, pearl-pink pussy bravely spread its hole open, engulfing my thick dick to its base.

No longer trying to hide it, she exposed a completely melted expression, and from her slackly open mouth, moist breaths and pleasurable moans endlessly leaked out.

「Haah… Haah… Haah…! Nn! Aahn!」

「Can’t let the men of the world hear this. They’d definitely misunderstand. Hey, TsumuTsumu? Even through the phone, your voice is incredibly sexy, but… did you get a boyfriend?」

「A-a boyfriend, I don’t think I have one… Nn! Th-this is intense…!」

「Hmm. A boyfriend, huh? When are you coming back here, TsumuTsumu? The second half of Golden Week starts tomorrow, you know? It’s a four-day weekend!」

「Y-yeah! I-I’m coming! I’m coming… soon!」

「I see. So you’re coming back soon… Oops, is it that late already? Sorry for talking for so long. Come stay over at my place next time! Let’s have a sleepover! Then, I’ll grill you for all the details about the guy you’re interested in! Be prepared!」

A voice said, 「See ya,」 and the call with the boisterous person ended.

There were some close calls, but it seems she didn’t find out in the end. Thank goodness, thank goodness…

After confirming the call was properly disconnected, she, continuing in the cowgirl position, casually tossed her smartphone onto the futon. And then, she started grinding her hips even more intensely.

「I’m coming… I’m coming, coming, coming! Just a little more… just a tiny bit more…! Aahn! I’m coming! No, no! I’m cuuummmmiiiiiiiinnnng!」

Completely forgetting about the phone call, she single-mindedly indulged in sex.

Perhaps because her orgasm was near, her pussy tightened, and by that pressure, my erect dick was milked, and a vague, indescribable, frustrating feeling of impending ejaculation welled up.

Bareback insertion, no condom. She must know that I’m about to cum any second.

Still, she didn’t stop thrusting. She continued to take my bare dick directly into her pussy, and then, and then――

「Coming, coming, coming! I’m cuuummmmiiiiiiiinnnng!」

「Guh! I’m coming too! Guuuh!」

――Splurt, splurt! Splurt, splurt! Splurt!

The moment my dick thrusted deep and reached her innermost part, pleasure exploded, and I ejaculated.

Semen gushed out each time my dick throbbed. I could clearly feel my hot, thick seed slowly filling her insides.

A complete bareback creampie. And into a woman who isn’t my girlfriend or anything――.

Her orgasm continued, her naked body twitching in small convulsions. Her breath hitched and she looked like she was struggling, but her expression was overflowing with the joy of pleasure.

After about 10 seconds, just when I thought she’d finally started breathing again, she suddenly went limp and collapsed on top of me.

Her skin, damp with sweat, was flushed and hot. And she smelled kind of nice.

「It’s heavy…」

「…If you’re going to complain, let me go. I’ll get off right away.」

「No. Stay like this, let me hold you.」

「What’s that supposed to mean? Well, to be honest, I couldn’t be bothered to move, so it’s fine. Haa… I was thoroughly satisfied today too…」

I tightly hugged her as she let out an ecstatic sigh, savoring her pleasantly suffocating weight.

As always, she’s a woman who feels amazing to hold. Her smooth skin that feels like it clings to you, and the perfect fit. Above all, her marshmallow-like softness is irresistible.

We don’t need sweet pillow talk. Because that’s not the kind of relationship we have.

Only time spent silently cooling down our passion passed.

「――Oh yeah, Minami.」

After a while, I suddenly spoke to the naked girl, Minami Tsumugi, also known as TsumuTsumu.

「…Hm? What is it? If we’re going again, please let me rest a bit. I still don’t have any strength in my body――」

「What do you mean I have a ‘full-blown virgin vibe virgin face’?」

「…Ah.」

「Oh my, oh my? The word ‘oops’ is written all over your face, isn’t it? I’ll listen to your excuse if you make it now. Go on, say it.」

「W-well, you see… If I don’t say that to Hazuki like usual, she’ll get suspicious about various things, so…」

「‘Like usual,’ huh? I see. So you and Hazuki always got excited talking about my virgin stories, is that it? Hmm.」

「O-of course not! There’s no way a word like ‘virgin’ would come up in a conversation between maidens!」

Just now, right in front of my eyes, two maidens were repeatedly saying ‘virgin, virgin,’ though?

By the way, Hazuki, the person on the phone earlier, is Minami’s best friend since middle school, and also my actual little sister.

In other words, I was having sex with Minami while she was on the phone with my little sister…

Or rather, I want to scream from the bottom of my heart, 「Don’t talk to your best friend on the phone while having sex! She’s my little sister!」

It was thrilling and exciting, but. It was so nerve-wracking and suspenseful, I never want to do it again. When she stopped suppressing her voice midway, I was seriously scared shitless.

「Hey. Look me in the eyes and say that again.」

「…………」

「Don’t look away.」

「Ah, ahaha…」

「Don’t try to laugh it off!」

「U-um, well, it’s, that, that thing…」

I’m currently holding her body captive. Staring intently, a silent interrogation.

She, realizing she couldn’t escape, far from resigning herself, blatantly tried to change the subject.

「Oh, right! It’s a message from Hazuki! She said, 「Stop leaving messages on read. Send at least a one-word reply,」 you know? Making your family worry, you’re a truly bad person, Senpai! Even though you always reply to my messages properly.」

「Because you’d sulk otherwise, right?」

「Huh? I don’t sulk, though?」

No, you do sulk. I know because I’ve experienced it once.

That time, I had such a hard time cheering you up that I firmly swore to myself never to leave Minami’s messages on read again.

「Besides, I don’t care if a virgin-faced virgin senpai who’s my sex friend leaves my messages on read.」

「…Shut up. I don’t have a virgin face. And I’m not a virgin either.」

「Oh, right. I was the one who made Senpai graduate from being a virgin!」

It’s true she made me graduate from being a virgin. But in return, I took Minami’s virginity.

We’ve known each other since middle school. To me, she’s my little sister’s best friend, and to her, I’m her best friend’s older brother. We’re just a senpai and kouhai who happened to end up at the same university.

We’re not particularly dating. Neither of us has confessed. But she frequently comes to my house, and we kiss, hug, and have sex.

Before we knew it, we had fallen into this depraved sex friend relationship where we just satisfy each other’s sexual desires.

Really, how did things end up like this…?

「You must have been happy to have your virginity taken by someone as cute as me, right? Good for you! You should thank me a ton and worship the ground I walk on!」

「Yeah, yeah. Thanks. Thank you.」

「Haa… That’s why you’re not popular with girls, you know? But well, Senpai, at least the shape of your dick and your sex techniques are top-notch, right?」

「I have other good points too, don’t I!?」

「Senpai’s good points… Your stamina?」

「Are my only good points related to down there!?」

I get hurt too, you know…

Minami is a beauty when she’s quiet, so it deals even more damage.

「Putting aside such trivial matters,」

「It’s not trivial! Don’t put it aside!」

Ignoring my indignation, she whispered sweetly in a coddling voice.

「Senpai, Senpai――Hey, can I kiss you?」

Kuh! This girl, really…!

「We’re both going back to our hometowns starting tomorrow, so to make up for it, tonight, let’s do it a lot… okay? What do you say, Senpai? It’s okay, right? You want to fuck a lot too, right, Senpai? You want to creampie me, right? You want to fill my pussy and womb completely full with your cum, right!?」

「…Aah, geez! Shut up! Do whatever you want!」

I easily gave in to her torrent of demands for sex.

Haa… When all’s said and done, I just can’t refuse her invitations.

I only found out after we started having sex, but my and Minami’s physical compatibility is outstanding, like nothing else. That’s why she basically never turns down or refuses my invitations either.

Besides――I can’t bring myself to disappoint Minami, who has finally found something she can be truly passionate about.

A no-strings-attached relationship where not even the ‘ro’ of romance exists, just for sharing sexual pleasure.

There’s a part of me that finds this distance strangely comfortable.

As a cheerful Minami kisses me one-sidedly, and while feeling the pleasure of my erect dick filling her pussy, I think.

「There’s no way I can let my little sister find out I have Minami as a sex friend…」

Sex friends, looked down upon by society.

My and her depraved relationship began from a short exchange we had about a month ago.

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Note from author:

Thank you for reading.

Next time, 'Chapter 2: Reunion After a Year'.

The timeline goes back about a month, reuniting with Minami who enrolled in the same university...

Please look forward to it!