"Fufufun♪ Fufufun♪ Fufufufun~♪"
"Konan-san, you're in such a good mood today~"
My name is Minazuki Mei. I'm an esthetician. Right now, I'm working on a client, Yoake Konan-san. As expected of an active gravure idol, she has an incredibly beautiful body that would make even women fall for her. We met two years ago, and since then she's been booking monthly appointments with me.
"Oh? I'm the same as always though."
"No, you never hum during treatments usually."
"Really? Maybe I'm just excited to see Mei-chan again after so long?"
"Come on~ Last month when you came it wasn't like this~ Something good must have happened. Tell me!"
"Well~ Actually, I had some really amazing sex recently~"
"Ooh, nice~ Did you get a new boyfriend?"
"Nah, not a boyfriend~ I had a threesome with Risu-chan~"
"Eh!? With Arisu-san? Who was the other person? They must be crazy high-spec!"
"Well, let's just say they're one-of-a-kind, ultimate specs. Younger than us but incredibly skilled in bed~"
"Wow~ Lucky you~"
"Good sex really makes a difference. What about you, Mei-chan? Been getting any lately?"
"Well~ Last time was two months ago~ Oh, coincidentally it was also a threesome. With my sister."
"Mei-chan really loves her sister, huh. You live together, right? Must be nice being able to have sex whenever. It's practically like living together as a couple."
"Well actually, we decided to abstain for the past month. Right now I'm at maximum horniness."
"Eh? Why would you do that?"
"Hmm~ The reason? Well actually~ We're having a threesome tomorrow~"
"Ooh, kinky. With the same guy from two months ago?"
"That's right. We thought it would be more exciting if we abstained for a month to build up anticipation."
"I'm so jealous~ The Minazuki sisters in a threesome~ Not a boyfriend, right? Just fuck buddies?"
"Something like that. He's younger and not very experienced, but he tries so hard and is just adorable~♡"
"I see~ Well, have fun tomorrow then."
"Yes!"
Being an esthetician might look glamorous, but it's physically demanding work using your whole body. Exhausted after a full day's work, I finally made it back to my apartment.
"I'm home~"
"Ah, welcome back Mei-chan. Hey, which underwear do you think I should wear tomorrow?"
It's nice that my sister comes to greet me at the entrance, but I wish she wouldn't ask me to choose underwear before I've even taken off my shoes. I just want to relax already...
"Red or black? Neither really suits your image, so maybe stop? The pink one you bought recently would be better. The one with frills and polka dots."
"Ah, the one from online shopping? But the bra size is a bit tight on that one."
"It's fine. Chifumin will just take it off right away anyway, and you're bringing spare underwear, right?"
"I guess~♪"
Sis is really excited~ Well, tomorrow is the end of our month-long abstinence so I can't blame her.
After my bath, with all my tasks done for the day, I thought I'd go to bed early for tomorrow. As I changed into pajamas and went to the living room, my sister was still doing something.
"What are you doing up so late?"
"Hmm~ Preparing for tomorrow~"
"Eh? Do you need that much stuff? We're not staying overnight."
"I know. I'm almost done, let's go to bed soon."
She's preparing a medium-sized suitcase. We didn't bring anything like this last time—what could possibly be inside?
"What are you bringing? Let me see."
"No way~ This is tomorrow's surprise~"
She locked the suitcase. I don't know what she's planning to bring, but I don't have the energy to pry anymore. Let's just go to sleep.
"...Sis, you're still up?"
Past 1 AM, I woke up briefly and saw my sister still awake with the light on, doing something.
"Mmm... Just reading. Couldn't sleep..."
"I see... You should sleep soon or you'll be tired tomorrow."
"I know..."
Recently my sister has been into horror novels. I don't know the contents, but all the titles sound terrifying, and the authors' names are scary too. I'm not good with that stuff, so I wish she'd stop this hobby.
"Ena-san, Mei-san, long time no see."
"Ah~ I missed you~ Chifumin!"
"Long time no see. Please take care of us today."
It's only been two months, but Chifumin's aura has changed~ Sis mentioned giving him a haircut recently, maybe that's part of it?
"How should we do it today? I think taking turns like last time would be good..."
"I don't mind either way. Whatever's easiest for Chifumin is fine."
"Chifumi-kun, Mei-chan. There's something I want to try today, so could you indulge me first?"
"Ah, I don't mind, but what are we doing?"
"I'm fine with it too. Is this what you were preparing yesterday?"
"Yep. Okay Mei-chan, first take off all your clothes."
"Eh? Just me?"
"Yep. For now."
"For now"? I have a bad feeling about this. But having said I'd go along with whatever sis wants, I can't exactly refuse now... Oh well.
I stripped naked in front of them both, though I tried covering my breasts and crotch with my hands—not that it helped much. Being watched like this is embarrassing but also makes my heart race.
"Th-this okay?"
"Now turn around."
I turned halfway as told, presenting my back. I heard a click behind me—sis must have opened the suitcase.
"Chifumi-kun, could you hold Mei-chan's hands behind her back for me?"
"Kyaah! What?"
"Bear with it a little, Mei-chan~"
Chifumin grabbed me, and something was wrapped around my wrists held behind me. What is this? Rope?
"Ena-san, this is..."
"Rope, just rope. I wanted to try tying Mei-chan up today."
"What? Sis, you never mentioned this!"
"Don't worry, don't worry. I've been studying all month, and I've read three books by Dan Oniroku-sensei."
"D-Dan Oniroku? Isn't that a horror writer!?"
"He's an SM master. Don't worry, just leave it to your big sister♡"
After tightly binding my wrists, sis brought the rope forward, doubling it around my collarbone before wrapping it beneath my breasts. She's surprisingly skilled—when did she practice this?
In no time, my upper body was tightly bound in rope, leaving me completely exposed.
"So Chifumi-kun, what do you think? Doesn't Mei-chan look sexy?"
"Ah, y-yes, very sexy... But are you okay, Mei-san?"
"I'm not okay! This is super embarrassing, so untie me already!"
"We're just getting started. How does it feel with your breasts completely exposed?"
"I told you it's embarrassing! We don't need this just to have sex!"
"You say that, but your nipples are already hard. You're such a masochist, Mei-chan—I bet you're actually loving this~?"
Sis lifted my right breast from below before giving my stiff nipple a teasing lick.
"Hyahhn!"
"Here, Chifumi-kun, you should play with Mei-chan's breasts too."
"Ah, then I won't hold back."
Squeeze, squeeze, squeeeeze, lick.
"Ahhn, s-stop... Ahhn..."
With both of them attacking my nipples simultaneously, my knees nearly gave out.
"Ah, careful careful. Let's move to the bed."
"Right. Excuse me, Mei-san."
Chifumin carried me bridal-style to the bed. But ugh, I hate this—I don't want to be carried like a princess while naked and tied up!
"Now let's tie up Mei-chan's legs too♡"
With my knees bent, my ankles and thighs were tightly bound, leaving me completely immobilized.
"Finally, bite down on this... there."
A wooden gag was forced into my mouth and secured. Now I looked like a captured demon girl. I couldn't move or speak anymore.
This position is embarrassing, uncomfortable, and painful... yet somehow I don't hate it. I've always told sis and my exes that I'm a masochist, but I've never been treated like this before. What's going to happen to me? Anxiety and anticipation make my heart race. Though no one's touching me there, I'm sure I'm already dripping wet.
"Now that the nuisance is taken care of, Chifumi-kun, let's have some fun together today♡"
"Mmmphhh!!"
Heyyyy!!