"So anyway, as I was saying, we're gonna be throwing one last party before we break up for reals. Stacy Vanille's place tomorrow night, seven o'clock sharp. Umm, you will be coming won't you Izzy?"

Isobel chews the inside of her cheek, fidgeting with the hands in her lap. Only a week ago, her best friend was a nervous wreck just like her, but now she's fully integrated into the college party life. They both know the reason, of course, is that expensive brainchip in Camilla's head. 

"Cammie you know I'd uh, be no good in a social gathering. You're so different now..." 

Camilla flashes a smile, grabbing her best friend's hands in an eager clasp. "Awwwh, thanks Izzy! I know right? I'm so confident and free now, you just have to get one okay? Then you can come to the party too, trust me. It's not just self esteem Iz, it has memory back ups, a built in calculator... even a translator! Isn't your birthday coming up? Hmm?" 

It kills Isobel inside to admit the obvious to her self absorbed friend, her family could never afford the latest technology. Once again, the girl will have to wait at least five years before she can even dream of affording a Nu-Sync brainchip. Even if she saves up all the money from her part time job, she won't have enough. The realisation makes the mousy young adult listless, the rift between her and the rest of her peers becoming ever more vast with the surge of this technology. 

Looking down at her relic of a foldable, holographic smartphone, a hand-me-down from her older sister, Isobel let's out another sigh of disappointment. She's grateful that her childhood friend is too oblivious to pick up on the jealously swarming around her, as she explains the built in YouTube functionality. 

Sometimes, Isobel tries to take the high road approach, convincing herself that she would never want to ruin her natural body with cybernetic enhancements. This argument fails to convince even her by now, never mind her family. 

"Izzy? You listening?" Camilla pokes her sulking friend, not wanting her to miss a single detail of her vapid retellings. 

"Huh? Oh uh, sure." Isobel looks over at Camilla, since when did the girl get such a good fashion sense? Her own clothes are plain, baggy and faded. Isobel dresses for comfort and convenience, while Camilla's outfit makes a statement. "Uhm, Cammie? Are you still... you?"

Camilla stares dumbfounded at her bestie, before bursting into laughter. "A-are you serious? Oh my god Izzy, you're killing me... Of course I'm me, still into the same dumb shit I ever was! I'm just acting like and doing the things I was too anxious to before. Don't you get it, Iz? I'm more me than ever."

"R-right, of course." Isobel nods, laughing back with some hesitation. Then... "Am I uh, boring?"

Two hands fall down on Isobel's shoulders, gripping them firm and pulling the girl toward the other. 

"Isobel, girl." Camilla begins, fully serious. "If you have to ask that, then I know there's someone in there, just screaming to be free. Trust me, Izzy, it's worth every penny... don't wait too long okay?" 

"...yeah..."

"Haaappy Birthday to you! Haaappy Birthday to you! Happy Birthday dear Isooobeeel! Haaappy Birthday to you!" 

"Hip hip! Hooray!" 

"Hip hip! Hooray!"

After a thunderous applause, the ear shattering ritual is complete and Isobel can finally remover her hands from the sides of her head. "I'm already 22..."  

"Don't be like that, Isobel dear." Loretta grins, placing a hand down on her daughter's head and patting it gently. "Come, open your present first, you have time to be depressed after!"

"Not that you will be!" Shouts the girl's sister knowingly, placing the shoebox sized present in the middle of the kitchen table. "Mom and dad saved up for this, so don't thank me. I'm almost jealous, almost!" Isobel's sister looks the birthday girl in the eyes, a certain modicum of amusement unmistakably present in her expression.

Quirking a brow at her mother and sister, Isobel approaches the table and slides the box towards her slowly. It feels too light to actually be a pair of shoes, unless they're sandals. Isobel almost laughs at the image of her in sandals, she's far too introverted to show toe cleavage!

A quick, impassionate tear of the wrapping paper is all it takes for Isobel's heartrate to pick up, as she gets a glimpse of the box within. "N-no way." She mutters, looking at her smiling mother and then back down at the box. With much more vigour, the girl proceeds to tear off the rest of the wrapping paper, excited and unable to believe her eyes. A... wait, a what?

"New... Synch?" 

"It's the brainchip you were saving for, we thought you might appreciate it a little earlier, in time for your friend Camilla's house party thing."

"Oh uhm, th-thanks mom, you shouldn't have."

No really, they shouldn't have! What is this cheap knock off shit? Is it even safe to use? Isobel's mind races, her mouth suddenly painfully dry as that shy voice dies in her chest. Confrontation is too difficult, so she just smiles placidly and waits for the chance to head up to her room. 

"Fuck. Fuck fuck fuck..." Isobel taps her leg restlessly, staring down at the box in her lap. It could work, but should she really interface with an obvious imitation? Knowing her family's income, a much cheaper imitation...

Knock knock.

"C-come in!"

The door creaks open and Hilda, Isobel's big sister, offers an understanding smile. "Hey there, Iz. Can I come sit?" 

Isobel pats the space beside her on the bed, grateful for some consolation. She's too old to sulk over birthday gifts, yet here she is. 

The mattress sinks in a little when Hilda lowers her weight onto it, the older sister almost 27 and unaffected by her baby sister's mousiness. Long auburn hair falling down past her shoulders and playful amber eyes fixed on Isobel's, Hilda simply picks up the box and turns it over. "Oh look, they ripped off the price sticker here. See?" 

"Snnrk. Yeah, but I still appreciate the sentiment y'know? I don't have the heart to tell them it's not the real thing." She leans her head on her sister's shoulder, wishing she had half of the other's tenacity.

"Let's at least take a look at it, c'mon!" Hilda's fingers are already moving to open the box, peeling off the circular tape keeping it sealed and pulling out the cardboard lid. With a smooth motion, she slides out the plastic shell housing the supposed brainchip. 

Isobel's eyes follow the unboxing with more interest than she lets on. She wants so desperately a sign this knock-off product might actually be worth a shot, looking for an excuse to convince herself. To her surprise, Hilda would give her just that.

"Wow this one is cheap and cheerful huh? It's an external peripheral, not even a real chip. I was wondering where the injector was."

The younger sister perks up, giving the box's contents a curious look. "So it's like... removable, then?" 

"I mean, yeah? I doubt this thing even works, look at this tacky visor. No offence, Iz, but I can't see you rocking up to Cammie's party wearing this toy on your face."

"Hehe, true." Yeah, that's true, but even still... her curiosity only grows. She has to know what it feels like, to be confident in yourself, to not question every action you make or sentence you say. Camilla transitioned from meek bookworm to life of the party in the space of a week, that was with an actual Nu-Sync sure... but that could just be branding, or the sleek invisibility of an internal chip. The actual core components could even be from the same factory, who knows? Anybody with access to google and the care to research it, maybe, but Isobel is too busy nursing hopeful delusions to be so level headed.

"Here, put it on!"

"Wh-what?" 

"I just have to snap a photo of you in this ridiculous thing, I have to send this to dad, he'll be so embarrassed!" 

It does not take much convincing to get the cumbersome peripheral into Isobel's trembling hands, Hilda securing the strap around the back of her head as the shaded panels suddenly paint Isobel's vision green. 

"It's heavy... The fit is so janky, what person has a head shaped like this? It's tight too..." The birthday girl mumbles, struggling to keep her head held up straight. A few seconds later, she feels her sister shifting closer on the bed to snap a few selfies. "Hey, maybe if you turned it on... it might look even more ridiculous."

"You sure? It might fry your poor brain, Izzy." The 26 year old looks around for a switch, glossing over the instructions without actually reading a thing. Two metal coils protrude from either side of the device, by Isobel's ears.

"Oh shut up, I'll be fine. Like you said, it probably does nothing." Even though she secretly hopes it does, the image of Cammie's smug, self assured smile starting to really get to her. Not long ago, the two were brushing shoulders in the library, watching from afar. Isobel's fear of being left behind has her in this compromised state of decision making, while Hilda has always just gone along with whatever. 

"Well then, it says batteries are included, so here goes nothing!"

Click--

A static whirr fills the room, quickly replaced by a concerning high pitched buzzing noise that assaults Isobel's ears unpleasantly. The girl contorts her face, before the coils either side of it suddenly spark and jolt her into a slackened state. Panic overtakes her, but not nearly as fast as the paralysis. Had her or Hilda bothered to read the manual, this is actually supposed to happen, but if they knew what would happen they would likely put it back in the box. 

Snap.

Hilda takes a selfie beside her sister, completely unaware of the latter's struggle, Isobel has always been a quiet girl. 

Small projectors along the top of the vizor flit bright lights against the inside shades, reflecting back into Isobel's quickly dilating eyes. She blinks rapidly, each light in a different formation every time her eyelids open. Before long, the strangest thing happens. Feeling like she's suddenly hurtling backwards, despite not moving an inch, Isobel's eyes snap open and stay wide... transfixed on the ugly lights. 

The magnetism keeping her eyelids apart begins to pry its way into her head with force. At first, Isobel tries to call for Hilda, but quickly remembers that her lips won't move beside the occasional twitch of facial muscles. That electric feeling between her ears, in tune with the static buzz, starts to drown out the sensations of the room around her. 

Isobel swallows drily, feeling like a passenger in her own body as the intrusive device bores into her conscious. After a while, the lights that felt overly bright and irritating to her eyes suddenly start to dance in pretty patterns that hold her attention. The actual display over the inside of the visor has not changed, but the girl's mental perception has, the New-Synch rewiring her brain as promised. 

The more receptive Isobel just allows the colourful, dazzling lightshow to distract her from the crackling sound of electricity between her ears. Hilda moves to place an arm around her and take another selfie, while Isobel's eyes begin to roll up into her head and she starts to forget why she was panicking. 

Everything just... 

...just...

Everything just feels so good right now!

From the tingling wash of pleasure running up her toes and fingers, to the electrifying touch on her arm by her sweet sister, Isobel is flooded with a rush of endorphins, her head feeling lighter than a feather. 

"Alright, I think that should be enough. Wow, dad's typing already, he should be working! Need help with this?" Hilda moves to loosen the strap around the back of Isobel's head, but stops when she elicits an unexpected noise from the girl after brushing her knuckles against the other's curly hair. 

It tickles, it tickles so much that Isobel loudly giggles from under the unwieldy headset. Some 'chip' this turned out to be, huh? Whether or not they were ripped off remains to be seen, however. 

"Uhm, hehe, Iz? You okay under there?" Hilda is more than a little unnerved by her younger sister's unrestrained, gleeful reaction. 

No response, but when Hilda looks down at their laps, she traces a line of drool hanging down from her sister's chin. The front of the mousy girl's baggy sweater is damp, how did she not notice until now?

With bolstered urgency, Hilda works to remove the headset, pulling it up off her sister's sweaty head and instantly moving to inspect the girl. 

Isobel is knelt on her bed, balled fists resting on her slightly parted thighs, her eyes wide with fully dilated pupils and a glassy quality to them. Her lips are curled into a half-smile, parted to show her gritted teeth from which spills that aforementioned line of drool. When Hilda moves to wipe the spit from her sister's chin, Isobel's skin goes flush and her eyes roll back up, teeth clenched in restrained ecstasy. 

"I-I what are... oh fuck uh, l-let me just check... the, check the manual real quick!" 

The air in the room feeling so much hotter, Hilda scrambles to pick up the manual and actually deigns to read through it thoroughly this time. 

Isobel takes a deep breath in, inhaling the stuffy air through her nostrils with a saccharine smile before deciding to stand up. "I feel... reeeallly nice." She hums, turning to face her sister as she places her hands down on the woman's knees. "Can... can you see?"

The contents of the manual are a shock to Hilda's system. The 'New-Synch' isn't a temporary, external peripheral alternative to the permanent brainchip at all. It's a device that stimulates the user through electrolysis and rapid eye movement, inducing permanent changers to the user's mental pathways and overriding the pleasure centres in the brain. It wasn't their parents who removed the price sticker, but whomever sold this tech to the second hand store that removed the warning label. Luckily, there is a copy of the warning in the manual. Hilda almost chokes when she reads it. 

WARNING! THIS DOMESTICATION DEVICE IS INTENDED FOR USE ON VIOLENT ANIMALS OR FOR BREEDING PURPOSES ONLY. DO NOT USE ON HUMANS UNDER ANY CIRCUMSTANCES. 

"Can I see?" Hilda is the one to gulp now, feeling the sweaty palms of her younger sister getting a little too familiar with her knees. The woman pulls her skirt down from where it had ridden up on the bed, her curled fingers clinging to the hem while Isobel's playful digits wander up to meet them. The girls touch knuckles, Isobel looking completely lost in a haze, drunk on endorphins, dopamine, oxytocin and whatever else her addled brain can secrete freely now. 

The younger sister nods, eyes crossing for a split second before she leans her weight down to sink those hands into Hilda's soft thighs. "Can you seeeeee how confident I am?" 

Hilda bites her lip, her heart pounding more than it probably should. She should yell for their mother before this goes any further, they could drive Isobel to the hospital as quick as the traffic lets them, see about undoing the damage. She should yell for their mother, but her cry for help comes out a pitiful whimper. Instead, she simply watches with shame as she lets her impaired younger sister slip her knee onto the bed between Hilda's legs, climbing up to straddle one of the older woman's legs. 

With Isobel's weight now pressing down on her thick thigh, Hilda resigns to temptation and pushes her leg up curiously. 

Oh yeah, Isobel is definitely getting wet already. The girl takes this movement as an invitation to grind more openly, pressing her clothed sex against her big sister and rocking her hips happily. "I don't think I... I wanna go to Cammie's parrrty anymoooore~" 

"O-oh?" Hilda tries to remain casual, leaning back on her arms while she watches Isobel get off on her thigh. "But, that isn't for a week."

"I want to spend allll week with youuu, sisss!" Isobel is panting breathily with each word, already so worked up, gritting her teeth from the intensity of her pleasure. "I owe youuu, hrrrk!" 

"Th-that's okay! I mean uh, you don't owe me, uh... but if... no what am I saying? Isobel, we need to get you looked at, like right now. You're not yourself!" 

With a sultry smile, Isobel climbs up higher to plant her hands firmly on her sister's shoulders. Looking her dead in the eyes, she repeats Cammie's words, just as seriously. "No, I'm m-m-more me than ever!" 

While Hilda is too dumbstruck with the confession, Isobel takes the opportunity to press a long, wet kiss against her sister's lower lip. She holds herself still by the other's shoulders, her insatiable slit needing more friction to maintain this wonderful high. 

Hilda opens her quivering lips to protest, but the increasingly confident Isobel places a self explanatory finger against her sister's lips, the other hand freeing itself to push eagerly into Hilda's blouse strained chest. 

"Wha-" Hilda gasps through the shushing finger, before those words catch the back of her throat once again.

"Your heart is beaating rreaallly fast. You're having f-fun!" 

The tip of the finger at Hilda's mouth pushes inside, parting those lush lips and tickling the tip of her tongue. It leaves a moment later, tracing down the woman's jaw, down her collarbone and torso until reaching those bubbly hips. Moving even further still, Isobel's finger curls around the discarded headset that made her oh so confident. 

"So..." Isobel giggles, moving to kiss her sister more passionately this time, pulling away just before the other can give in and start to return it. "...let's be confident together~" 

Bzzt-- 

Camilla hears the sound of shuffling feet, an older woman reaching the front door, opening it a few moments later after removing the chain. "Hey Mrs-"

"Call me Loretta, honey." The woman leans into the doorframe, her cheeks a dark red and her eyes drinking in the sight of her daughter's oldest friend. Mid forties, but looking like a woman ten years her junior, she returns Cammie's confused smile with a not so subtle lipbite. 

"Is... is Izzy home? I saw her car parked out front and-"

"Why don't you step inside, silly? She's eating dinner with her sister, just step through into the kitchen sweetie."

Cammie nods, the Nu-Sync chip working extra hard to keep her confidence up as the older woman gives her a predatory look. Clutching her tote bag tight, she feels the hot air of the household cling to her, traversing the familiar abode with a not so familiar scent filling the air. Well, that's not entirely true... Cammie thinks she may be able to place the scent, but she could scarcely believe such an absurdity. That is, until she swings open the kitchen door. 

Isobel is fully naked, laying with her back pressed against the hard kitchen floor, her legs splayed out from beneath her sister and three fingers plunged into her tight cunt. Hilda is just as nude, save for a lace bra that hangs down below her exposed chest. The older sister straddles the younger's head, smothering Isobel with her sex from which Cammie's childhood friend happily eats up. What gets to her most, more than even the surreal picture before her, is the sounds. Sapphic slurps, eager moans and infectious giggles that spell clearly to Cammie how neither girl shows a spread of apprehension or shame. They're just... having fun. Enjoying some family time between sisters, not a care in the world. 

Camilla clutches her mouth, stepping back into the hallway only to stumble backwards into Loretta. The sudden seductress flashes a predatory grin to match the stare from earlier, holding something peculiar above Cammie's head.

"Shhhh, don't be alarmed, pet. You're part of the family now. Izzy and Hilda always wanted a puppy~"

Loretta pushes something down onto the girl's head before the startled Cammie can react. 

...

...

...

Click--