Mad scientist gf (macro, green)

>you’d hesitate to say your gf isn’t fun.
>a scrawny 4’6” caracal girl called Cassy. She insists the tufts on her ears count and she’s really 4’8”.
>so yeah, she’s fun but sometimes she takes things too far.
>her idea of a fun night in is breaking several laws of physics and biology, as many as possible at once.
>you’ve had to be brought back to life eight times due to these experiments. A couple were your fault, you’ll admit. The rest...not to point fingers or anything?
>”You're so clumsy, my fermion sweet! I’ll NEVER let anything happen to you!”
>oh, the nickname? Something about a thing that can only take up one quantum state at a time. You think she’s referring to herself as that quantum state.
>because you suspect destroyed down to the smallest atom if you ever looked at another girl.
>so yeah, you can’t die, not in the traditional sense.
>you have an unspecified number of clones of yourself hidden somewhere in her home and you don’t know when Cassy first installed that brain uploaded graft.
>it’s just some days you wake up naked, sticky and confused no matter where you were before.
>if there’s one sticking point in this relationship, its her frailty.
>she’s so small and thin that even moderate snuggling exhausts her and while she’s a real go-getter in the sack, she bruises easily and a lot of the time you have to stop midway.
>this upsets her a lot. Especially when you accidentally brought up an old gf. A tall, well toned tiger girl from high school.
>Cute as Cassy is, you may have implied you prefer taller, sturdier girls.
>”oh... I see.”
>for a moment you expected her to get angry, but instead her ears flatten and she looks sheepish, making her seem even smaller.
>then the crying start as she hugs you, resting her head against your stomach.
>”Please don’t leave me, Anon! l can’t lose you! I WON’T lose you! I’ll make things better, I swear.”
>well, that’s not ominous at all...

>a couple of days go by and everything seems to be forgotten.
>you walk in on Cassy’s lab one day to see her finish drinking something from a test tube.
>she hiccups, and as you draw near, her stomach makes some peculiar gurgles.
>you gently pat her on her head, ruffling her ears, and ask what she’s up to.
>”An ultra body nourishment formula. Just finished a hundred thousand calories, already taken the other stuff.”
>that doesn’t sound healthy. Wait, other stuff?
>”Oh, sure. Taken alone it would leave me a bloated, immobile blimp.”
>she turns and looks up at you with a very clear hunger in her eyes.
>then the shirt buttons between her open lab coat draws tight around her chest and she gasps, smiling.
>white and tan fur fill your eyes as her tits bulge out as big as her head, a snap as her bra gets destroyed.
>she hiccups again and loses a few buttons, and she begins her approach.
>with each step, she briefly pauses and you notice the rest of her quivering, swelling, her head raising as she grows taller.
>the lab coat bursts around her shoulder, revealing well toned muscle swelling beneath.
>her furry, flat belly gains distinct lines and grooves as abs develop.
>her capri pants shred from her broad hips and powerful thighs as she reaches your height.
>Cassy pins you to the wall and kisses you, tongue snaking into your mouth.
>she awkwardly hiccups again and goes wide eyed as she swells up in one last spurt.
>eye contact is lost as your chin gets buried in her huge tits.
>”Oops... slight miscalculation. Oh well. “ she says, seven feel tall.
>she lifts you up and carries you over to a napping sofa, something you insisted on as she keeps working too long and passing out.
>then she rips your clothes off, mounts you, and humps you with wild abandon.
>she’s so heavy and powerful, you can’t fight back, but you don’t know if you’d want to.
>the growing pain in your hips is just bested by your arousal
>then Cassy stops, gasps, and shrinks.

>she hops off of you and runs to her notes as the shreds of her clothes fall off of her once more tiny body.
>”Wait there, I’ll fix this, I swear! Just don’t leave me! Please!” She’s taking this hard, you go to stand and offer reassurance.
>”I said wait!” She screams and grabs a familiar device, pointing and shooting you with it.
>the last thought through your mind as you black out is how it’s been a while since she used the tranquilliser gun.
>things were far less complicated with that tiger girl, Lucy.
>she was kind and sweet. She left the state with her family though.
>you were heartbroken. Cassy was there when you needed affection. You were too lonely to turn her down.
>it’s been complicated ever since. Damn, you miss Lucy.
>you mumble her name.
>”Lucy? Fucking Lucy!?” A muffled voice as you awaken through then drugging.
>you regain clarity to the furious, teary eyed look of Cassy.
>she’s got a syringe with a tiny amount of murky liquid inside poised over her inner arm.
>”That’s it... after I’m done, you’ll NEVER think of her again!!”
>Cassy walks to a table, taking a large bottle of the same stuff.
>you try and stop her, but your limbs are still like jelly.
>she squirts the dose back inside and gets a bigger syringe.
>you panic and weakly start crawling to her.
>too late; after a quick study of the comically sized syringe, she jabs the it into her arm and depresses the plunger, slowly and smoothly.
>”I’m going to be perfect for you, my fermion sweet. I’ll be more Lucy than you could EVER want!”
>she heads over to a vat of the calorie liquid you saw her drink earlier.
>she can’t lift it.
> she tilts it towards her and slurps as much down as she can in each breath. Ever the scientist, she stops on occasion to check the measuring lines.
>with a loud stomach gurgle, and an soft burp, she looks over to your dumbfounded expression, and hiccups with a huge, psychotic smile.

>Cassy’s body violently shudders and she almost falls over, forcing her to grab the table as once more her body thickens.
>her arms and legs swell and tone, her ass expands as her tail wriggles about and her flat tits bulge and impact the table with a loud thump.
>they’re soon lifted as her whole form spurts from 4’6” all the way to 6ft even.
>Cassy turns and pulls you up from , but the trip to the sofa is interrupted by her moaning loudly.
>the floor pulls away and doesn’t stop until her head impacts the ten foot ceiling.
>”Still thinking of Lucy, Anon? Allow me to add further stimuli” She forces her tongue into your mouth and keeping you aloft with one hand, teases your erection with two fingers.
>she pulls away and looks at the cramped conditions, and starts for the door.
>”You’re mine, Anon. And I’m your perfect match. We were made for each other. I love you! You love me, right?”
>it’s a quandary for the ages. You decide to agree after a few moments of thinking leads to her squeezing your body.
>”My perfect lover!” She gives you another forceful kiss, only for her tongue to bulge in your mouth.
>her eyes go wide and she grows a foot taller, forcing her to slouch.
>”Ah!.. another miscalculation. Oh dear, I thought I would be getting diminished returns... this is...aahhh!”
>she falls forward as her spurt forces her to slouch further, throwing her off balance.
>you’re buried beneath a breast as heavy as you are.
>the mass mercifully spills around you so you’re not crushed, but smothered nonetheless.
>Cassy’s increasingly aroused moans sound distant thanks to the surrounding mass, but you’re suddenly plucked free as she shifts her position.
>”You’re safe with me, my love! Keep close, I’ll protect you.”
>she braces her back against the ceiling, and pushes herself to stand with you clutched in her hands
>thirty feet of Cassy begins her ascent.

>With a great deal of crashing and cracking, the caracal girl stands upright and sighs with relief.
>you're clutched in her hands, covered by the overhang of her enormous tits.
>the late evening sky illuminates your gf, who steps from the rubble and turns to look at her lab.
>she's wealthy, funding her own experiments with money sent by her supervillain father who terrorises people in some far off city.
>all the more reason you're afraid to run. He's a wrathful type.
>just as well she lives at an observatory on a hillside. One of her father's lairs away from lair.
>"Now, where were we?"
>Cassy parks her perfectly balanced muscle/fat ratio ass on the ground to solid crack of paving slabs.
>she lowers you down and presses you against her still dripping slit.
>"We'll make this work, my love. Give me your best, and I'm sure you'll do just fine."
>not like you have a choice otherwise; you begin running your hands along her labia as she settles back and gasps, shivering at your attention.
>any hope for freedom as she releases you as her body falls back and she hooks her ankles together; there's no way you're getting away without her knowing.
>That and you doubt you'd survive the chase.
>and you hate to admit it, but holy shit she's hot now.
>all the motivation you need to please her is a look along her body away; the parting of her tan furred tits wobbling and jiggling as your efforts continue to make her writhe and moan.
>then she hiccups.
>with a huge spurt, she engulfs you in her folds and cries out as her body swells, cracking more stone and accidentality driving an elbow into her already damaged home.
>it's the last thing you see before you're completely smothered.
>you don't know how big she is now, but you know the only way out is to fight your way out.
>unfortunately her growth induced arousal, compounded with your movements, causes her to squirt you out as she climaxes.
>and boy does she climax. So much that you're crushed.
>*BRAIN UPLOAD INITIALISED*

>*SEARCHING FOR DOWNLOAD SPECIMEN*
>*SEARCHING FOR DOWNLOAD SPECIMEN*
>*SPECIMEN FOUND*
>finally! it's been doing that for ages. doesn't usually take this long.
>yep, there's the unpleasant sticky feeling, the draining of nourishing fluid, the ejection of breathing pipes from your orifaces.
>you gasp for normal air and step from the tank.
>"Wait, is it working? Oh thank god!"
>Cassy's voice from the loudspeaker as you get your bearings.
>must have been a dream from the upload sequence; wouldn't be the first.
>you roam your gf's home a little, shower and dress.
>"I'll be right there, sweetie! Sorry, I'm still working out some of the kinks in the system!" this time it's just her voice.
>you sigh and try and wrap your head around what happened.
>you hear Cassy enter the room, give an excited squeal and the sound of her footsteps rushing behind you.
>then your head is engulfed between two shirt-clad tits as her firm arms wrap around you.
>she spins you around and you look up at her teary eyed, wet-cheeked smiling face.
>"I missed you so much, my love!"
>you muffle a response about how long it's been.
>"A month! It took me two weeks to get my father to work out a way to shrink me and I've been repairing the house since!"
>Wait, shrink? you mean she's?
>she looks at her watch and grins
>"Well, how about a demonstration? Can't beat practical application over theoretical banter."
>she carries you outside and strips down, looking at the watch before throwing it on her clothes and getting some distance.
>the watch beeps, and Cassy immediately gasps and feels her body.
>she smoothly regrows
>and grows.
>oh shit she's still growing.
>50ft.
>80ft.
>slowing, 120ft.
>150ft
>she sighs and stops.
>"Well, that's the first reduction dosage expired. Another will expire in six hours."
>just how big is she?
>"Six hundred and ninety three feet, eight point three six inches! And it's ALL yours, my fermion sweet!"
>This will take some getting used to...

>domineering, able to level cities by herself, and even at her smallest, she's now got superpowers.
>turns out her growth formula was designed to tell square-cube law to go fuck itself.
>at her max height, she's 'normal' strength proportionally.
>your 8'9” gf now has so much strength she has to use a device to limit herself with a dampening field belt or she'll break anything she touches.
>that said she still needs the calorie intake for her true size. That ultra rich liquid is now a standard 'dressing' for her food. millions of calories a day.
>even with her strength weakened, she's made a special, non growth version of the superhuman stuff for you to take.
>only on certain occasions.
>namely when you have sex, which is often.
>it's still complicated. Her father made a point to force you to marry her at death-ray point.
>although that said, you're a pretty positive influence on her.
>after all, she made an ultrapower super macro serum, a miracle foodstuff drink and cloning technology just to be with you, possessiveness or not.
>you convinced Cassy to give her gifts to the world, and now she's actually a superhero.
>just one that conveniently gives her father a wide berth.
>her father doesn't even mind; it makes her happy to see you happy she's not trying to steal the world's gold or turn everyone into micros for world domination purposes.
>so much so, that on the night of her calorie drinks worldwide distribution, ending world hunger, you have a loud night of intense sex.
>so intense, she accidentally double dosed you with your super formula and you actually overpowered her.
>and she loved every damn minute of it as her vast, powerful body was your plaything.
>so much so, you found yourself dosed with the real stuff at your first wedding anniversary.
>so you're a macro too. just half her actual height.
>and a foot shorter than her at your smallest.
>still weaker though, except when you deserve a treat.
>maybe she's better than Lucy after all.
The End