Sayori woke up before the others. Or, perhaps it would be more apt to say that she never slept at all. Even before hooking up with Yuri and Natsuki, she'd been a bit of an insomniac. Then, of course, when she did fall asleep, she often remained that way well into the afternoon. It was a bit of a problem, and one she would hopefully, eventually, rectify.

Until then, however, she was going to lay awake, staring at the ceiling, letting her imagination run wild. And it was easy for her imagination to take lurid turns tonight, considering what she'd just done with her two best friends.

Hours after their threesome, and she was still feeling butterflies in her stomach about what had transpired. The way that they put their hands on one another… for the first time, as a group. They'd elevated their relationship; they were no longer just friends anymore. Not really.

Right now, the three of them were sharing one bed. Yuri's bed, of course. Yuri smack dab in the middle of it, laying on her back, gently snoring. Tangled up in bedsheets, and curling up beside Natsuki. Natsuki really seemed like such a needy little thing while she was asleep. The way she snuggled into Yuri made her seem almost clingy. Like she didn't want to let Yuri go, even in her sleep.

Sayori smiled at the sight of the two of them, in each other's embrace. Hopefully they'll be a little nicer to each other from now on, she thought.

She sat up, letting her feet dangle off the side of the bed. Lifting her phone to her face and dimming its brightness, she saw that it was almost midnight, and she winced.

Ah, geez… I really need to sleep better…

| +1 new message |

She blinked, seeing that she had gotten a text message.

From Monika.

I thought she would have been asleep by now… Sayori thought. Curiously, she opened the message.

| Monika: boo.

Sayori smiled, firing off a reply.

| sayori: Ahhh! Scary! Hello!

| sayori: I thought you would have been asleep by now.

| sayori: What are you doing up?

She hummed, thoughtfully. Perhaps Monika was working late on a school project. Organizing her Debate Club notes, or helping a teacher to grade papers, again.

| Monika: i'm a bit restless tonight. what are you up 2? x3

| sayori: I'm at a sleepover right now. With Yuri and Natsuki.

| sayori: I'm sorry we didn't invite you. It was kind of a last-minute thing!

| sayori: I wish you could be here because then we could be awake together.

| sayori: You know?

A twinge of regret ran through Sayori. She suddenly felt a bit guilty that Monika wasn't here. It would have been nice for the four of them to get together… although she was certain that Yuri needed more time to tell Monika about her not-so-little situation.

| Monika: its okkkk

| Monika: hmmm maybe you can make it up 2 me…

| sayori: Oh! Haha, maybe…

| Monika: are you thinking what i'm thinking?

| sayori: I probably am…

Sayori smiled anxiously as her fingers tapped away at her phone's keys.

| sayori: … Mistress.

| Monika: hehehehehe… good girl.

A shudder passed through Sayori's body. She loved being called a good girl, even more than she loved her phone's auto-correct function. Every single spelling mistake - and she made a lot of them - was rectified before she ever hit SEND. It almost made her seem like a professional when she sent texts. Monika, on the other hand… she felt such things were restrictive. Not genuine. Although if there was one thing Monika was proficient in, it was…

| Monika: do u remember your safe word?

| sayori: Yes, Mistress. I promise I do.

| Monika: good! and how are we feeling? do we wanna play tonite?

| sayori: Yes, Mistress. I want to play with you…

| Monika: let me guess…. yuri and natsuki are asleep?

| sayori: Yes, Mistress! I'm right next to them actually haha.

| Monika: and still talking so dirty to your mistress…

| Monika: ur such a filthy little thing lol i love it.

| Monika: makes me wonder… what am i going to do with you?

| sayori: Anything. Anything you want, Mistress. I promise.

No one in this house was awake. Yet despite this, Sayori still felt as though she'd been caught. Truthfully, it was that she could get caught at any moment. That was, of course, part of the thrill. No one knew about this arrangement, except for those involved. Only Sayori was keenly aware of just how filthy Monika was, and vice versa. Tonight's festivities were only a drop in the bucket for Sayori: it was Monika who had filled that bucket halfway.

And for the Debate Club President, archetypal teacher's pet, and all-around beloved school representative to be engaged with something so depraved… and for only Sayori to know about it…

Compared to the queen bee herself, Sayori was just a fly on the wall. Sure, they were friends, but that's about all that Sayori believed she had going for herself. Monika's Friend - that was her most important public title. And her most important private title? Monika's Pet.

No one should know… Sayori thought. We need to keep this between us… it's more fun that way.

| Monika: i want a nice pic of my sweet little pet's cute butt.

| Monika: think u can do that for me hun?

| sayori: Yes, Mistress! One second. Let me get out of bed and find a good spot…

There were butterflies in Sayori's tummy. They were doing little twists and turns. Bouncing against her stomach lining. She was an obedient little pet until the very end, but Monika had never asked her to do something like this in public before. Not at someone else's house, while its occupants were sleeping soundly. It was somehow filthier this way. Even more secretive. Even more of a turn-on.

Swallowing her anxiousness, and wanting to please Monika, Sayori tiptoed out the door and down the hall, into Yuri's bathroom. The light switch is flicked ON. The door is shut, and locked. Almost immediately, Sayori catches her reflection in the bathroom mirror.

Her hair was a mess… though the real trouble, she felt, lay within her gut. She'd been gorging on sweets all semester - even more so than usual, due to school stresses - and so it was only natural that the girl started getting a good bit of chub. Pinching her own tummy, she frowned.

...It was a worry for another time. For now, she had a job to do. Opening up the camera app, she bent forward in front of the bathroom mirror and snapped a nude selfie.

*Click!*

And another, bent over the toilet.

*Click!*

She smiled in both photos, making sure to jut her back in just the right way. Bending forward well enough to really highlight that gorgeous ass of hers.

Deciding that just two photos weren't enough, though, she settled on taking just one more. She held the phone down low, right next to her butt, and snapped another picture.

*Click!*

And then sent all three to her Mistress. It didn't take very long to get that sweet, sweet positive reinforcement.

| Monika: omgggg

| Monika: fuuuuuuuuck omgggg

| Monika: my pet has the cuuuutest lil ass i swear i'm so lucky!

| sayori: Hehehehe. Thank you. uwu

| sayori: Your compliments honestly fuel me.

| sayori: Sometimes I feel like I can't live without them.

| Monika: awwww sweetie… i love making you feel good~

| sayori: Thank you Mistress! n_n

| Monika: that last one is def my favorite one

| Monika: i wish i was there~

| sayori: Me tooooo. Then you could get your hands all over me.

| Monika: yuri and natsuki are still asleep right?

| sayori: Yes, Mistress.

| Monika: lets have some fun then, just you and me~

| Monika: ok sweetie?

Sayori's heart fluttered, again. Why would she ever decline?

| sayori: Yes Mistress, thank you!

| Monika: good girl ❤️

| Monika: i've got something else for you to do.

| sayori: Anything, Mistress. Name it!

| Monika: let me get nice and comfy…

| Monika: until then, sit there and play with yourself for me, ok?

| sayori: Yes, Mistress!

Sayori got started almost immediately. Since she was already naked, she sat on the toilet and spread her legs, letting her hands wander across her own body. Letting her imagination run wild. She was already having a wonderful time; she'd never done something like this in someone else's home. And while they slept, no less…

She wondered what Yuri would think about something like this. She should have left the door unlocked, for that extra layer of risk. Even Natsuki could have found her playing with herself in here. They'd surely understand. Sayori's libido was just too high to contain.

That's why I need Mistress and Yuri to fuck it outta me… she thought, licking her lips at the thought of being between them. With Yuri's thick, manly, musky manhood… and Monika's dominating nature; her firm hand, and her array of toys…

Thoughts like these were enough to get Sayori more than a little hot and bothered. She dipped her fingers into her wet pussy, sighing with relief at the sensation. Like scratching an itch that was always there, in the back of your mind; she was SO horny.

She checked her phone.

| Monika: use yuri's hair brush~

Sayori's eyes went wide. She quickly sent a response.

| sayori: Oh my gosh! Mistress, that's… I've never done that before.

| sayori: Are you sure it's okay?

| Monika: ofc! just clean it when you're done~

| Monika: and send more pics! it'll be so hot.

| sayori: Okay Mistress!

Sayori gulped. Nervously, she grabbed Yuri's hair brush from its place beside the sink, and sat back down on the toilet. Spreading her legs, she brought the handle-end close to her pussy, and she snapped another photo.

Ah, geez…! Sorry Yuri. I just can't think straight right now…

From there, Sayori commenced pleasuring herself with the hair brush. The handle was very thick - it was firm, and slipped in with little resistance thanks to her arousal. Still, she made sure never to go too roughly. She didn't want to hurt herself, after all.

Using one hand to hold the phone up to her nether regions, Sayori took another picture, making sure to keep her thighs spread for reveal. She even took another picture with the hair brush stuck in her pussy, which seemed to elicit a positive response from her domme.

| Monika: lolll that looks so good hun ❤️❤️

| Monika: you srsly turn me on so much…

| sayori: Thank you, Mistress! I love to please you!

| Monika: i would just eat that pussy up if i was there, i s2g

| sayori: Heheheh. I miss your tongue on my kitty, Mistress.

| Monika: we can play soon. i've just been so busyyy….

| sayori: I know, don't worry ❤️

| Monika: how does yuri's hairbrush feel, sweetie?

| sayori: Not as good as your tongue or your toys…

| sayori: I want you to wreck me again. Pound your good girl!

| Monika: i'll see if i can fit you in my schedule ;3

| sayori: LOL. Fit something nice and thick into me.

| Monika: only if you do what i say.

| sayori: Always, Mistress!

| Monika: go back to the bedroom where the others are.

Sayori's heart skipped a beat at the command. She put the hair brush back (after cleaning it, thankfully), and made the short trip back to Yuri's bedroom. She and Natsuki were still sound asleep, although Yuri had splayed out even more so. The sheets were almost coming off of her. She snored quietly, and she looked so peaceful while she did so.

| sayori: Okay! Now what?

| Monika: take pics of them, i wanna see how funny they look!

Sayori rolled her eyes. Oh, Monika. A secretive little prankster when she wanted to be. Finding the command to be a relatively harmless one, Sayori followed it without a second thought. From her spot beside the bed, she took a few pictures of Yuri and Natsuki laying together, the sheets barely over their bodies and leaving little to the imagination. Then, she sent the pictures to Monika, who seemed pleased as punch to receive them.

| Monika: lol! omg, i didn't think they were gonna be snuggled up like that… :O

| Monika: sheeeeesh, they look knocked out! did you roofie them or smth?

| sayori: LOL. No, silly! I guess we did have a bit of a work out before bed though…

| Monika: ohhhhh did you now?

| sayori: LOL… yes. Sorry Mistress! I should have told you.

| Monika: that's strike 2 you know…

| Monika: how are you going to make it up to me?

| Monika: that's what i'm thinking rn…

| sayori: I'm sorryyyyy Mistress. I've been bad…

| sayori: Let me do anything I can to make it up to you.

| sayori: I didn't mean to be such a needy little slut...

| sayori: You know my libido is super high…

| sayori: But, I think this is a really good thing!

| sayori: We're all going to be much better friends now.

| sayori: ...Mistress? Did I make you mad with me? I'm sorry!

| sayori: Next time something like this happens I'll tell you first thing.

| sayori: Okay…? Please don't be mad.

| sayori: I thought it would be okay so hhhhhhh.

| sayori: Mistress…?

| sayori: ...Monika? Is everything okay…?

| sayori: If you don't want me to have sex with them I won't.

| sayori: I promise I'll only do it with you if that's what you want.

| sayori: Say something please!

| Monika: lift the blanket off of them and take another pic.

Sayori, who'd been freaking out over Monika's silence, was somewhat stunned at her domme's new command.

| sayori: Um… are you sure? I don't know if that's…

| Monika: come onnnn. you can make it up to me like this!

| Monika: it's just a harmless little prank, isn't it?

| sayori: Umm… I don't know, it's just…

| Monika: just what?

| sayori: Ahh… shoot. I guess there's no avoiding it forever!

| sayori: One second, let me show you. Try not to freak out, okay?

Sayori frowned. She didn't know what she was feeling, but she knew it was bad. How would Monika react to such a thing? Would she be enamored, or repulsed? Ultimately, there was only one way to know for sure.

Lifting the blanket off of Yuri, Sayori gulped at the size of her friend's growing erection. She was most likely having a nice dream, if that twitching cock was any indication. Sayori watched it gently pulsate, as if it was breathing, as it lay there against her own thigh, almost tapping Natsuki due to Yuri's positioning beside her.

Ah… I'm sorry, Yuri! But I don't want Monika to be upset with me, so…

*Click!*

She took a picture of Yuri's naked form, before sending it over to Monika with shaky fingers. The flash had consumed her friends, bathing them in a bright light for only less than a second. Still, she was once again reminded of how peaceful they looked as they slept together, naked. Vaguely stirring, in their pleasure dreams.

A quiet moan escaped Natsuki's mouth, in-between her soft snoring. A near-silent Oh~ that had Sayori thinking she was being reprimanded: Oh, Sayori, you dummy, why are you taking naked pictures of us in our sleep?

Then Monika's reply came in.

| Monika: ? what

| Monika: is that what i think it is… no way

| Monika: no way i don't believe it

| sayori: It's true. Yuri has… a penis.

| sayori: That's why I was worried to show you.

| sayori: I didn't want you to treat her any differently.

A pang of guilt ran through Sayori as she continued typing.

| sayori: Please don't tell her that I showed you, okay?

| sayori: I'm so nervous all of a sudden.

| sayori: I feel like it would have been better if she told you.

| Monika: hey don't worry, i promise nothing's changed

| Monika: thank you for showing me and being honest

| Monika: i won't treat her any differently

| sayori: Ahh that makes me so happy to hear…

| sayori: You have no idea how relieved I am, Mistress.

| Monika: we can stop with the pet play stuff tonight if you want.

| Monika: i didn't mean to make you so nervous, sorry if i went too far.

| sayori: No, I want to keep it going. It's hot.

| sayori: It's okay, I promise.

| Monika: pfft ok… if u say so.

| Monika: little slut. you should be ashamed.

| Monika: taking pics of ur sleeping friends, exposing her secret.

| Monika: don't you just feel disgusting~?

| sayori: ...Okay maybe that part can be left out of the play.

| Monika: oops! ok lol XD

Sayori let out a deep sigh of relief. Okay, she thought, this was fine. Everything was fine. Monika was taking the news well. She didn't seem to be put-off by all of this, like she suspected she would be.

I'm overreacting. Monika's our friend. If she didn't like this, or if she felt grossed-out… she would tell us. She's honest like that. I should have trusted her more.

| sayori: I think that's enough excitement for one night though.

| sayori: I feel a bit down, I'm sorry.

| sayori: I just worried you wouldn't like Yuri anymore if you knew her secret.

| Monika: awww no! so she has a penis, big deal!

| Monika: and it seems like a big deal from over here ifyouknowwhatimean

| Monika: lol jk but u know

| Monika: really, yuri's our friend. nothing's changed.

| Monika: ok hun?

| Monika: you were so good tonight, sweetie. so wonderful. ✨

| sayori: Hehehe really?

| Monika: yes really. if i was there, i would give you ALL the headpats.

| Monika: that's how much of a good girl you were.

| sayori: I do like headpats. I'll take 500 please.

| Monika: yes ofc!

| Monika: let's meet up again soon ok? i really wanna see you.

| sayori: For stress relief?

| Monika: i meannnnn...

| sayori: Looking forward to it!

| sayori: By the way, Yuri hasn't been keeping this a secret all this time.

| sayori: She said she grew her cock like before we had school.

| Monika: the night before?

| sayori: Yeah. I believe her. I think I would have noticed it sooner.

| sayori: Like during gym class or something like that.

| Monika: hmmm that reminds me…

| sayori: Yes?

| Monika: how did it feel having that thing inside you?

| sayori: I haven't had it in my pussy yet. Honest.

| Monika: "yet" she says lol.

| sayori: Haha yeah. When we had fun, I just put it in my mouth.

| sayori: It's absolutely, definitely, 100% a real cock.

| sayori: But I want to go at a pace that Yuri is comfortable with.

| sayori: While also helping her come out of her shell a bit.

| Monika: hmmm yes i bet you help her "come" a lot huh?

| sayori: LOL. Shush. Go to bed.

| Monika: you go to bed. that's an order!

| sayori: Yes, Mistress. Let's talk later. My fingers hurt from typing a lot.

| Monika: mmm, your fingerssss…

| sayori: Asdfghjkl,./

| Monika: lmaooo even your keyboard smashings are organized.

| Monika: stop using autocorrect you're too cute for it!

| sayori: Make me.

| Monika: oh? you think i won't?

| sayori: Spank me lots later. I'm resting my eyes now.

| Monika: gnnnnn sweetie!

| sayori: Goodnight Monika.

Sayori let her hands fall to her sides, and a heavy breath passed through her lips. Monika was fun. But she could be a handful sometimes. Being a submissive was never easy. Sometimes, it felt like a second job. One that pays in spankings and head pats, not bills. Pity you can't take the former to the bank, or else Sayori would be a rich little girl indeed.

Putting the blanket back over Yuri and Natsuki, Sayori smiled tenderly, and she kissed them each on the forehead. Watching them gently fidget in their slumber, maybe even smile.

"Love you guys. I hope we're all friends forever."