~Several Hours Ago~
Selene watched from the third-story window as her Master, Arthur, made his way from the front door of his apartment building to his car. She had a smile as she stood at the window and was thrilled that anyone looking at her might know this wasn't her apartment but Arthur's. Yet they couldn't see she was naked from the waist down, while from the waist up, she wore only a black Metalica shirt that ended at her shaved pelvis and a plain thin leather collar against her throat, marking her as Arthur's slave.
She loved the thought of being his slave and had fantasized over it for what seemed like an eternity before she finally dared to make it real. Now, she was the happiest she'd ever been, even if her legs and body were tired from the day's ordeal.
Her life had been sexual pleasure and bliss for days, and she never wanted it to end. The periods where her activities had been interrupted by stupid intrusions like school, life, family, etc., had been miserable. All of them were overshadowed, driven from her mind when she was on her knees before her Master. Or, better yet, on her back, giving him as much pleasure as he would take from her. She squirmed at the thought but stayed at the window to watch him drive away.
Arthur had to have dinner at his parent's house tonight. He'd told her that days ago when they started. Back then, this was supposed to be a once-in-a-while thing. Something she thought she might come over to do every few days or maybe once a week. Fortunately, she found it impossible to resist. Even now, thinking about him standing over the coffee table, remembering being tied to it with her mouth forced open in a ring gag, opening her body for his pleasure, started her heart racing, her body flushing, and her butterflies fluttering.
She turned her back to the window once he was out of the parking lot, onto the road, and surveyed the room. The couch on the wall to her right, the coffee table, the floor beyond it, the kitchen and dining area to her left, the TV beyond the open space on the left wall, the bedrooms on the far wall - one a bedroom and one a study. This was her Master's apartment, and it was a bit of a mess.
Toys, paddles, vibrators, and the general detritus of clothing, mail, and everything else were scattered around. She looked at the sofa. Arthur told her to rest and drink water. She could do that, but she wanted to clean this place up first. If nothing else, he deserved to come home to a clean apartment. That she wouldn't be able to relax with it so disarrayed was also a point in favor of her doing some cleanup. Then she could sit and relax.
She got herself a glass of water first, drank it, and then sent the image of the empty glass to Arthur in a text message. The cleanup didn't take long. Washing and cleaning the toys and vibrators, putting them away in his bedroom closet or in the briefcase as necessary, was quick and easy. Then she went through the bags of things they'd gotten from the store. Anal training plugs specifically. She read the instructions, used the kit, and took a shower. Then she lubed one up that she guessed she might experience some discomfort with and slowly pushed it in.
She was right. There was some discomfort, but it wasn't as bad as she feared. It wasn't bad at all, really. Once it was in, there was a full feeling that was downright pleasant. She clenched her cheeks, expecting to feel it, and she did. She felt a thrum in her body that tingled her sense of pleasure like a feather on the skin. It was pleasant but not directly pleasurable. She took a step and felt the change. It would take some getting used to, using this larger size than she'd ever had in her ass before, as she moved around the apartment.
She took out the lingerie they'd bought together at the store and laid it on the bed after opening it. He hadn't told her to wear any today, though she'd wished he had. Ah well. There was always tomorrow. Besides, they still didn't have any lingerie for Kat either, though she had some fancier bras, and the two of them had plans to go shopping for some special surprises for Master tomorrow since his and Kat's little session together had gone well.
It took her about an hour to clean the apartment, though she took out the plug partway through. From the instructions, it was only supposed to stay in for a few minutes at her time to train her ass. Once this one started being easy enough to push through, she'd move up in size. She'd slowly work her way up to Arthur's massive cock. She shuddered at the thought of him taking her ass, pushing her into the wall as she stood spread-eagled against it, fastened to it, her ass red from a spanking as she cried out into a jawbreaking ball gag and ground her clit against the unyielding wall. She couldn't wait.
Once the apartment was clean, she returned to the shopping bags in the bedroom and took out the wall anchors. She knew where Arthur kept his tools in the hall closet, and she knew more or less how to install these. The eyebolt rings were small, but they were perfect. She put them into the studs on the blank wall section to the right of the front door, between it and the hall closet. She pulled a chair over to reach so that they were spread out and high up, with another pair closer together at the same height.
Master might not be pleased with her initiative. She was supposed to ask permission to do things like this, and she knew that, but she also knew that he would be pleased to have something to punish her for. He still owed her the spankings he promised earlier, the thirty-seven based on the marks she'd made in the notebook.
If she were lucky, maybe he would use these, tie her to the wall, and paddle her until she came. She was biting her lip just thinking about it. Maybe Kat would watch.
Thinking of her sister, she reached for her phone and messaged her after she'd finished and put everything away, hanging her sister's pink leather collar on a key hook behind the door. It'd been some time since Arthur left, and she'd gotten a lot done. As well as drank a lot of water, which she sent Arthur pictures of, as he requested. Then she messaged her sister.
Selene: Still feeling good about it?
Kat: ... Yeah. It was good.
Selene: Were you okay with me pushing your face onto his cock like that? I didn't mean to be too rough.
Kat: It was fine.
Selene: Did you enjoy doing it together like that?
Kat: You obviously did.
Selene: Oh yeah. Big time. It was fun to watch you two, but so exciting to share him with you.
Kat: God, you're such a slut.
Selene: And proud of it. Lol.
Kat: Are you coming home tonight?
Selene: Not if I can help it. Master told me to rest, so I'll hang out here and watch some movies or something.
Kat: Need me to run anything over?
Selene: Maybe. Do you mind?
Kat: No. What do you need?
Selene: My backpack, laptop, books, and maybe some clothes for Master to pick from tomorrow?
Kat: What clothes?
Selene: Just grab a whole bunch. He'll pick what he likes.
Kat: You know, you could always just pick something to wear for yourself.
Selene: I like having him pick for me. I like knowing that what I'm wearing is something he likes seeing me in.
Kat: So just wear nothing. He seems to like that.
Selene: He's actually really into lingerie.
Kat: Yeah, he mentioned that I think.
Selene: You still good to go shopping tomorrow?
Kat: Yeah. But we do need to study for that Non-western Lit class, or you're going to flunk pretty hard.
Selene grimaced. Literature always came easy to her sister. She was an English major; it was her thing. Selene always preferred movies to books, even though there were a few books she really liked. She'd always been an average student in school, but as a tactile learner, she preferred anything she could do hands-on. Video games were her literature, whereas Kat chose to sit in the corner with her books and ignore the rest of the world.
Selene: Yeah, ok.
Kat: You need anything else?
Selene: No. Do you want to order dinner over here? Master said I could order through his laptop.
Kat: Sure, so long as he's paying.
Selene smiled and smoothed down her t-shirt for a moment. She wanted to run the lingerie through the washing machine, but these apartments didn't have a washer or dryer in the units. They had a laundry room downstairs but dressed as she was, she couldn't exactly leave the apartment. Master chose her clothes every day; today, he'd only brought her a t-shirt and a pair of high heels. She felt sexy in them, mainly because she knew that Master found it sexy, but the t-shirt just barely failed to cover her shaved pubic mound, and she wasn't going to put on any other clothes if she didn't absolutely have to.
She only had to wait a few minutes before Kat arrived, lugging two backpacks and a small duffel bag across the parking lot and up three flights of stairs. Selene watched for her through the peephole on the door. Standing on her tiptoes to see through it, she could look out to the landing and the door across from them. She'd never seen anyone coming or going from the apartment, so she didn't know who was in it, but she imagined she'd meet them eventually or at least see them if she spent enough time here.
She opened the door for Kat and closed it behind her sister as Katerine entered and immediately dumped the heavy bags on the floor by the coffee table. Selene pulled the chain over the door and locked the deadbolt out of habit.
"It stinks like sex in here." Kat huffed as she smoothed out the sleeves of her blouse. She wore a sensible, almost professional, outfit as usual. Comfortable gray slacks held in a tucked white blouse, though she still wore the high heels Arthur had picked out for her earlier, which would have made her as tall as her younger sister if Selene wasn't also wearing heels.
"Does it?" Selene asked, looking around and sniffing. She could only smell the typical smell of Arthur's apartment. The scent of him, a hint of vanilla, though now that she processed it, there was a slight hint in the air of something else.
"Reeks." Kat frowned.
"Well... maybe we can air it out?" Selene asked, going over to the window. She opened it a crack, and the cool evening air brushed through it and scraped against her bare skin. It sent goosebumps up her arms and down her legs.
"Don't you want to put some pants on? You look like a prostitute version of Winnie the Pooh." Kat cracked a smile.
Selene stuck her tongue out at her sister. "I'm comfortable like this." She shrugged, lifting the hem of the shirt up slightly higher on her hips. She didn't tug it back down.
Kat rolled her eyes. "Fine." She knew better than to argue the point with her sister. Especially since Arthur hadn't thought to provide pants for Selene to wear while he was away, she knew Selene would consider it disobedience to wear extra clothes.
"At least put a blanket or towel down on the couch. I don't want to have to sit in your... whatever." Kat grimaced.
"Pussy juices?" Selene teased her by saying what she was too embarrassed to say.
Kat glared at her. "Just put something down."
"Yes, ma'am." Selene teased as she pulled the blanket down from the back of the couch, the gray fleece that Arthur usually had spread over its back, and put it on her corner so that she could sit without offending her sister's sensibilities.
