Becca chuckled darkly. “Oh, I know that, Sis. Weak is probably the best way to describe you,” She leaned down, her light blue eyes wild with lust and mischief. “That’s why I’m here to be strong for you.”
And then Becca’s hot lips were on hers, and they were sharing the searing, illicit kiss that Kitty had longed for so badly last week in the changing room. Kitty could feel her sister’s hips grinding powerfully down into her torso, her tongue brashly entering her older sister’s mouth, taking the pleasure she wanted from her sweet little submissive.
Being dominantly kissed by her new Mistress was so fucking hot that Kitty could barely stand it. Her own hips humped upward desperately into the empty air, unable to make contact with Becca, who was sitting high up on her torso. A frustrating reminder that her Dom could take whatever pleasure she wanted, while Kitty’s pleasure was strictly rationed and controlled.
Becca pulled back from the kiss, her lips and eyes shining. “Even though I’m not surprised by your failure, I can’t exactly let my naughty little sub get away with no punishment,” purred Becca wickedly. She rose up onto her knees, shimmying forward. “Mom told me that you came at least three times for her. And I’m not sure how many times you rubbed one out all alone in your room today, but I’ll be generous and call it twice…”
Becca planted her knees on either side of Kitty’s head with bold authority. Her powerful tanned thighs and puffy, glistening pussy now hovered directly above Kitty’s face lustful, terrified face.
“I want you to think about what a bad girl you’ve been while you give your Mistress five orgasms,” said Becca tauntingly. “And be quick, pet. We don’t want this to take all night.”
Then, with teasing slowness, Becca’s pussy descended. Finally, it firmly pressed down over Kitty’s mouth with hot, moist pressure. With a swooping feeling of shameful submission, Kitty extended her tongue and began her humble service of her little sister’s pussy.
Kitty’s tongue squirmed and plunged, Becca’s eager juices dripped down her face as her Mistress firmly ground her hips onto Kitty’s face in tight circular motions. The feeling of inferiority was almost overwhelming. It was one thing to be given commands by her Mother. In a sick, twisted way, it almost felt natural to be ordered around by the woman who had been in charge of the household for all of Kitty’s life. But this was her little sister: the annoying little brat who had whined and begged for Kitty’s attention. Who had looked up to Kitty with starry-eyed hero worship for so many years.
And now she was growling with savage satisfaction as she used Kitty’s mouth as a sex toy.
Luckily for Kitty, Becca seemed to find the situation just as darkly erotic as she did, and her first orgasm came quickly. Becca’s muscular thighs tense and trembled around Kitty’s cheeks. She felt Becca’s tight pussy gripping her invading tongue like a wet, silky vice, trying desperately to draw her deeper.
With a shuddering gasp, Becca reached down and smoothed Kitty’s hair back from her forehead in a discordant moment of tenderness. “One down, my sweet little cunt-licker” she said with a giggle, her light blue eyes shining down on her trapped sister. “Only four more to go.”
…
Kitty’s tongue and jaw were sore and sticky by the time her task was finally finished and Becca slumped off her to the side, sighing with satisfaction.
Kitty’s own pussy was leaking and pulsing with hungry need, and she was trying to work up the courage to beg her mistress for relief when she heard Becca retrieving whatever it was that had clattered onto the bedside table when she had first arrived.
It wasn’t until Becca started slipping whatever it was around her waist that Kitty felt truly alarmed.
“B-Becca, wait!” she stuttered, squirming under the unfamiliar feeling of leather and metal suddenly being fastened around her naked waist. “What are you doing?”
Becca gave her sister a piercing glare of warning from where she was working between Kitty’s legs. “Don’t forget yourself, pet. Call me Mistress. And I think it’s pretty obvious what I’m doing. I’m giving you a little gift.” She pulled some sort of strap firmly up between Kitty’s legs and connected it to the belt piece with a sharp *snick* of a catching lock, holding the strap snugly against her pussy.
Becca pulled away as Kitty’s shaking hands reached down to feel the device now locked around her privates. Her little sister had just fitted her with a chastity belt.
“No,” said Kitty with numb horror, foolishly tugging at the sturdy leather and metal belt. “N-no, mistress, please! Don’t do this!”
Becca tried to look stern, but couldn’t stop a wave of gleeful giggles bubbling up from deep inside her. “You should see the look on your face Sis!” she hooted, collapsing back onto the bed. “Ohhhh noooo! My bratty little sister won’t let me touch my pussyyyy!” she whined in a high mocking voice, breaking up into giggles once again.
Overwhelmed by her shame and the intense emotions of the past day, tears rose unbidden into Kitty’s eyes, blurring her view of her laughing sister and the humiliating chastity belt she had been forced to wear. Kitty felt helpless and defeated as she slumped back into her bed, sniffling.
Becca finally noticed Kitty’s tears, and her laughter died off. “No, no, Sis,” said Becca tenderly, all traces of amusement leeching from her voice, “Don’t cry.” She lay next to her sister and pulled her close, snuggling Kitty’s tear-streaked face into her warm, naked breasts.
“It’s so embarrassing!” wailed Kitty, sobbing helplessly as she clung tightly to her sister, desperate for comfort. “I… I shouldn’t b-be like this! So perverted and h-horny for my own family!”
Becca’s hand stroked Kitty’s hair firmly as she tenderly embraced her sub. “It’s ok. It’s ok, Sis. We love you anyway,” she said, kissing the top of Kitty’s head.
“And now this,” said Kitty in a choked voice, touching the tight chastity belt around her privates. “It’s like I’m an animal, or a little girl or something. Like I can’t be trusted with my own sexuality.”
Becca shrugged stiffly, grimacing. She was willing to comfort her forlorn sister with physical affection and sweet words, but going back on earned punishments was another story. “If you can show me that you CAN be trusted, then the belt won’t be necessary,” she explained. “But this is an important lesson, Kitty. When I set a rule for you, you do as I say. Otherwise being your dom is meaningless.”
“I’m sorry Mistress,” said Kitty pitifully, her face still buried in her little sister’s tits.
“I know you are, pet,” said Becca firmly, “But now you need to prove it with your actions.” She gave Kitty one more quick peck on the head, then separated from her, leaving Kitty still looking a little teary, but now with a determined set to her jaw.
“Every day when we wake up, we’ll shower together and make sure everything is clean,” said Becca briskly, clapping her hands together. “After that, I’ll supervise you for an hour or so while your belt dries. If you’ve been good, that might be an excellent time for a little… relief. Outside of that time, you’ll need my permission… and key, for any and all unlocking.”
“What about when I’m with Mommy?” asked Kitty, her eyes wide and her tone humble.
A look of faint annoyance crossed Becca’s face. “Mom will also have a key,” said Becca brusquely. “As much as it pains me to admit it, you can consider her your “head dom”. Her orders supersede mine.”
“And…” Kitty bit her lip nervously, “When I’m with Rose?”
Becca chuckled darkly, a gloating, secretive look in her eyes. “Well, pet, relationships aren’t all about sex, are they? You had better hurry and prove to me you can handle your orgasms responsibly if you don’t want your girlfriend to find out about your embarrassing new accessory. Because I honestly don’t see myself unlocking you for that purpose.”
Kitty gulped, Her fingers playing over the restrictive new permanent addition to her wardrobe.
Suddenly this little sex game had gotten a lot more real.
…
As the sexual submissive of her household, Kitty’s life went through a lot of changes during her second week of family bonding.
Sometimes things were almost normal. The three women would sit around the dinner table, eating and laughing and talking like they used to. They would have movie nights… although Kitty often had to spend at least part of the time administering foot rubs or fetching popcorn.
But on a daily basis, just as promised, Kitty would be forced to give humiliating sexual service to her Mommy and Mistress. With daily sticky, shameful reminders, it was impossible for Kitty to forget her new place at the bottom of the family pecking order.
Becca loved nothing more than to tease her older sister. She clearly loved the power she had as Kitty’s keyholder. Her ironclad control of her older sister’s orgasms was a privilege she abused with gleeful enthusiasm. Becca had implied that she might help Kitty orgasm during their shared showers and the drying time for her belt, but in practice, she usually took the opportunity to tease Kitty right to the edge before… “Ooops, what do you know? Looks like your belt is already dry! Better luck next time, Sis!”
On Wednesday, Kitty finally broke down in frustration and snapped a little at Becca, hotly insisting that her harsh denials weren’t fair. Even as the words were leaving her mouth, Kitty knew she had gone too far, but to her surprise, Becca sweetly agreed with her, saying that maybe she really should let Kitty orgasm more often. Kitty left the interaction feeling hopeful.
But she should have known better.
On Thursday after their shower, Becca inserted a remote-controlled vibrator into her sister’s pussy before strapping the belt on over it and turning it up to the maximum setting. The rest of the day was an endless erotic nightmare of constant, buzzing sexual pleasure and mind-melting orgasms. Kitty begged her cruel mistress to take the maddening vibrator out before bed, but was met only with coy giggles and the question “But I thought you wanted more orgasms, didn’t you Sis?”
Leave a Reply