Colossatol (Green, micro, macro)

>you love your girlfriend
>Sam’s a sexy rat girl, fit from parkouring almost everywhere
>amazing ass, surprisingly busty
>the most adorable little pink nose and smooth grey fur
>sadly all tied up in a six inch tall frame, hence the parkour
>she gets you off with intense, full form tugging and wrestling
>and you’ve given her plenty of tongue, fingers and pinning her with your shaft back
>it’s just a little awkward explaining things to family and friends
>she has a condition, one in a hundred thousand anthros who’s body is sized like the base animal
>giraffe girls that grow to 17ft in height, eight foot tiger amazons and three foot fox girls lead to a broad and diverse world
>and anthro guys get away with one in a million somehow
>you make it work, though
>Sam pulls in a good wage as a model; tiny versions of bigger clothes tailored for all sizes
>until one day she received a phone call about a twentieth anniversary of Final Fantasy 9 photo shoot and stage play thing
>they wanted her to play, naturally, Freya Crescent
>a little fur bleach and makeup and she’d look the part
>the guy behind it is a major perfectionist nut job though
>once he asks for someone, he’s set in hiring them, no price too high
>she agreed in a heartbeat, assuming they’d researched her condition; she’s a minor local celebrity, after all
>she even put in hours learning to fight with a spear; she takes her work with adorable seriousness
>the outfits were already made
>made for a rat woman who’s six feet tall, not six inches
>”It’s fine. We shrank and grew people before,” he said over the phone
>wait, what?
>”I get what I want, and what I want always works.”
>breaking square cube law, biologically impossible mass changes, ethical ru-
>”Don’t question my methods! I’m a genius!!”
>she’s sent a box a week before the shoot filled with syringes and a large bottle of ‘colossatol’
>full instructions, no side effects
>more research put in since that shrink pepper spray thing so mishaps are rarer
>and breaking the contract will have her sued into oblivion
>”Well, shit.” Sam says

>you prepare the syringe, as per the instructions, which list a ‘theoretical dose’ to be adjusted until she’s six feet tall
>and with a phone ready to call an ambulance, you reluctantly poke her with the needle with an adorable squeak
>she pats her painfully perforated posterior, pouting, possibly preparing despite poor probability
>neither of you expect anything
>then she shivers
>and moans and writhes on the bed
>and by the long squeak and tiny squirt from her snatch, it’s not painful as you watch with amazement as Sam swells inches taller
>she’s starts fingering down below and palming up high
>and in a bout of jealousy, you lie down next to her and give her a helping hand as she hits a foot tall
>fingers plunge into her growing and soaked passage
>she’s getting louder by the second as climax is met with climax
>the bed’s soaked as she hits the tenth orgasm in a minute at three feet tall
>then, mercifully as you cram your face into her over-eager folds, she stops growing at four feet tall
>her eyes are crossed, but as soon as you go to ask if she’s alright, her legs hook you back in and you’re having rat for lunch
>and dinner
>and dessert
>she’s really damn strong despite how out of it she is
>and it’s a surprise when she lets you go
>only to flip you over, mount you, and she practices her ‘jump’ ability by bouncing on your dick, so slick yet so tight
>and she helps clean your face with kisses and licks, eyes still full of lust
>maybe it’s because your ‘full’ of her but you hold back cumming for a while as you take over pounding her back
>you explode in her as she hits her thirty second, and final, orgasm
>she finally calms down after four hours and passing out for another
>she comes fully to her senses
>you watch her look with wonder at a nearly normal sized world
>after eating her body weight in pizza you get some proper sleep, cuddling on the sofa

>she’s started to shrink overnight
>one and a half feet tall and dwindling when you awoke
>instructions state to wait until fully shrunk before trying again and increase dosage as needed to zero it in on six feet
>in the meanwhile, you bathe together
>Sam applies her fur bleach, and by the tine she’s back to six inches tall, you now have a white furred Freya lookalike as a girlfriend
>the bed is cleaned and you get a rubber sheet
>you expect a lot of happy little accidents
>and a lot of BIG ecstatic ones too
>you’ve got another injection of colossatol, slightly higher dose, ready to go
>Sam wiggles her hips and shakes her ass at you, tail swaying suggestively
>”Stick it in, lover. I’m ready for round two if you are.”
>you respond to her dirty talk by pinning her down and giving her a good poke
>and you put everything away as she shivers
>but no organic squeak
>just a smooth and steady growth
>all the same, you snuggle her growing form
>holding a kiss as she grows from one to two feet tall, enjoying the strange sensation
>roaming hands and suckling her tits between two and three feet
>three to four feet you spend making tender love, a gentle thrusting as you finally fit in her again
>then she pushes beyond four feet
>her legs, tail and arms hook around you and she suddenly climaxes despite the still budding arousal
>she clings to you and begins humping like crazy as you at first struggle, then just let it happen
>five feet tall, she stronger than you are by far
>you cum easy enough, and you slam her against the bed and have to start pushing a hand in in her as her squeaks and screams fill the room
>then with a massive gush, you’re covered in her femcum as she finally hits six feet tall
>you both collapse, you flat on top of her, head buried in her tits as she holds you against her
>you mumble she’s a bit busty for Freya
>she laughs
>two days of near constant sex, it’s nice to just talk and hug

>maybe it’s a little disappointing, but you’re still exhausted from the last two days
>it’s obvious that her hyper-arousal only covers crossing new sizes
>you still spend the third day with Sam at six feet tall again
>lots of cuddling
>then practice with the wooden spear she’s been sent for her role
>then she goes out and climbs all over town, revelling in climbing buildings instead of furniture
>she finishes with ‘spear’ training
>she doesn’t need two hands for that
>you do some sheathing as well
>day four comes and goes, and you ‘accidentally’ add a little too much colossatol on day five and cuddle as she grows
>*cuddling intensifies*
>Sam sprays your crotch as she rocks about and reaches six and a half feet tall and screw like rabbits to calm her down
>it throws off her training, and you’re forced to swear not to so that again
>she does promise to take as much as you want after the shoot
>and she’s still subtly aroused by being taller than you are for the sixth day
>the seventh day comes, and a phone call sends Sam staring at the colossatol bottle, then you as she answers her micro sized phone
>she’s talking about her dosage, the amount she’s been using to hit her Freya size
>”A-are you sure? Okay. How much!? I’m... okay, I’ll be there.”
>she puts the phone down and you ask what’s wrong
>”The actor playing Puck went overboard with his dosage yesterday and it’ll take too long to wear off. He’s... big.”
>how big?
>”Not sure, but I’ve been told to take a specific dose based on how much made me six feet, because the boss can’t reschedule so they’re making giant costumes on a rush. We’re all going big.”
>what about the arousal?
>”I’m taking it here and walking there as soon as the outfit is delivered. I’ll need some help keeping control.”
>anything for her
>”Hope you’re ready for a reversal in size...”

>Sam’s a little familiar with public exposure
>once during a live fashion thing, the tiny string bikini she was wearing was designed for a rail thin model against her fuller figure
>snapped right at the end of the tiny runway and people got an eyeful
>and she once streaked as a dare in college, climbing into the shoulder of a live news broadcast
>she’s a bit apprehensive about growing into a ultra-horny rat giantess though
>she keeps mumbling, “one million bucks,” beneath her breath as you prepare a full syringe
>you’ve found a nearby field but you can see people watching from afar
>a truck with a two shipping containers stuffed with red material finish unloading and drive away as Sam reluctantly gives you a nod
>far less wiggling as she sticks out her tiny butt
>you try to be as quick and professional as possible
>she gasps with pain at the amount of liquid pushing into her
>the smooth growth starts
>then speeds up
>she hits six feet in ten seconds
>and her loud squeak as she violently punches past Six foot six inches
>her eyes roll back and she falls to her knees as she hoses the ground with femcum
>you can’t help but get hard as she forced herself to her feet and grows quicker and quicker
>her pink feet cut expanding lines in the dirt that get filled with her honey
>and her hands drive in as she hits ten feet tall
>fifteen
>twenty
>she vibrates so hard it looks like an earthquake
>then she outright falls on her back as she hits forty feet tall and causes a tremor for real
>still spraying, still growing
>you’re grabbed and plunged inside her
>it’s hard to enjoy when you just know wetness, warmth and pain
>but after what feels like an eternity, she pulls you free
>you wipe the sticky juices from your eyes just as you get placed in her cleavage
“Shit, you okay?”
>you say you’ll feel better when everything stops spinning
>she’s gotta be about eighty feet tall
>and the sight of her cute buck teeth hanging over you as she plants a huge kiss is something new
>”Well, time for the show.”

>Sam gets dressed and applies a bathtub filled with body paint on her hands, feet, nose and ears, whiting out her pink skin
>within minutes, you have an eighty foot Freya
>she gently picks you up and places you on her shoulder, then heads towards the venue
>a light police escort clears the roads
>even so, Sam's clearly worried about damaging anything
>and despite her best efforts, the road surfaces crack underfoot
>eventually, though, she gets out of the town and into the country, and you can see the venue
>it’s a huge auditorium build just outside of town, and you can see other actors and models already, each near enough to the scale of Sam
>the mad man in charge is barking at people to get in place; camera crews, set dressing is out but they make clever used of forced perspective for some shots
>as fun as watching a group of giant cosplayers do their thing, Sam's too busy for the following couple of days to really give you any attention
>that said, Sam really gets into her role and most of the crew dig her performance
>not bad for a model amongst what were mostly actors
>so you lurk about as much as you can
>then you find the tent they keep the colossatol in
>boxes and boxes of the stuff
>so naturally you start collecting and stashing
>one bottle stands out though, although it looks very similar to the others
>colossotol P.C.E.
>untouched, still sealed, put next to a note for sending back some pharmaceutical company
>deemed 'too experimental'
>mysteriously goes missing before the shoot finishes
>at last, it's over, all parties head away
>you and your seven foot and shrinking girlfriend head home
>she's been so big for so long, it's taking a long time for her to get back to normal
>so you cuddle up for another night
>cuddle and gently coax her button
>and she cuddles back while stroking your length
>a nice, comfy, no thrills shared climax
>plenty of kisses as she continues to shrink
>until you both fall asleep as she hits two feet tall, snoring gently on your chest
>you eye the suitcase you loaded with colossatol
>tomorrow's gonna be a BIG day

>"Uh... dude? You realise you just stole about a years worth of colossatol."
>you tell Sam you're well aware.
>"Fucking score."
>she points her well proportioned for six inches tall ass at you.
>"Surprise me, big boy. I did say you could use as much as you wanted."
>you'd love to go ham with it, but she still wasn't super happy about being naked in public for the third time
>then you see the fancy stuff, the Colossatol P.C.E
>experimental growth material
>Sam's phone goes off and she heads out of the room to answer it so you decide to act quick
>about nine and a half foot of normal and what would be a half a foot of the new stuff to see if this stuff works the same way
>you wait for Sam, which takes a while
>she runs into the room with the biggest smile on her face, then climbs up you as she always does when she wants a hug
>as soon as she reaches your torso, you lay back on the bed, concealing the syringe under your hand and she stands on your chin
>"I'm gonna be an actress! The execs loved me as Freya and someone wants me to be Mrs. Brisby in an adaptation of Secret of Nimh!"
>so she won't have to be big any more?
>"Oh, don't be like that. We have a load of colossatol, and we got on just fine before we ever had it, big bo-."
>her squeak of surprise as you jab her butt cuts her off
>then you press the plunger and hope you don't have to make an emergency phonecall
>she gasps as she begins to grow
>"ooh... that's tingly for some reason. How much did you use?"
>you say enough for six foot, hoping to surprise her.
>which comes and... stops?
>"Felt like going classic? I can dig it."
>you make out with her, feeling her firm body and soft fur
>you eventually let slip you did actually put a little extra in it.
>she looks at you in confusion
>"How much extra?"
>you wonder...
>twenty feet
>"Then why did I sto-"
>Sam shudders violently and gasps as she stretches and swells in all directions
>the floor creaks and she has to bunch up to not wreck the room.

>"Fuck fuck fuck!" she panics
>it's clear she's afraid to move
>you enjoy the moment and give her as big a kiss as you can
>somewhat awkward since she's three times your size plus change
>it still snaps her back to you, and she calms down
>"What's happening?"
>you tell her what you think; she can control it.
>Sam looks at you, confused
>then she goes wide eyed and shrinks at a rapid pace
>once she hits three feet tall, she stops, then grows back to six feet
>finally, with a pained grunt, she shrinks back to six inches
>Sam grunts with effort, but nothing
>just classic, tiny, sexy rat girlfriend
>"I... guess it's temporary? What's the name of that stuff?"
>you tell her and start setting up another syringe
>it's time to experiment with the experimental
>as you plunge the needle into the P.C.E stuff, you hear Sam call your name
>"Rumours of a new chemical in the Colossatol line, quietly used by the special effects industry to make giant monsters in tinsel-town, have circulated...Permanency and Control Enzyme."
>she rails off a news article from a hack news site, but the more she says, the more you realise they might be on to something
>it mixes with colossatol and burns it up quickly, but gives size control to the user
>a rising starlet went missing after abusing it, famous for being a massive bitch behind the scenes
>apparently was set for a budget sequel to Honey I Shrunk the Kids
>the drug was made so that, when given, it allowed permanent control over size with only a few bottles of the normal stuff afterwards
>when she realised she had control, she tried to stomp on a rival actress and go on a rampage
>the whole thing was covered up, but apparently the military got involved
>you look at each other, then the bottle
>the only question on both of your lips is what you'll do with the other forty or so bottles of colossatol
>one syringe of colossatol PE coming up
>and a number of the regular stuff as chasers
>you'll need more needles before long and approach her awaiting ass

>with the million bucks in the bank, and more on the way, you and Sam took a vacation
>the old house felt a bit cramped
>although she wore it like a bikini before it totally crumbled
>so here you are
>a rented private island
>sun
>sea
>a beautiful rat girl who's currently eight feet tall
>the two of you in an open space a thousand feet long, away from the villa
>Sam squeezes your ass as you fill a large syringe of colossatol and hand it to her
>"We're gonna be so raw after this," Sam giggles
>you shrug and wiggle your ass at her
>a prick, a warm tingly sensation
>then moments later, you have the hardest erection ever
>Sam's bigger and stronger than you, but you pounce at her with enough force to knock her down
>and you fuck with abandon
>you swell larger, and Sam keeps up as she squeaks with pleasure
>you cum in seconds, but far from feel finished, a moments later, you're even harder
>Sam's having to divide attention between growing to keep up and fighting through each climax
>the ground starts shaking as your tongues fight for dominance
>your being rough with her, but she's loving every second
>and you can honestly say that you now understand the multiple orgasm thing
>the beach gets drenched, the pale sands darkening from your cum and her own gushing
>you aren't even aware of anything any more
>just you and Sam
>nothing else matters
>it's getting dark by the time your brain turns back on
>both of you are well over a hundred feet tall
>just the sound of gentle waves lapping against your massive bodies
>it's heaven
>after spending a day huge, you spend a day normal
>you ask Sam what size she wants to stick to
>currently at six feet tall, she gives you a wink
>then shrinks
>"Just because I can be as big as I feel like, doesn't mean I wasn't happy with how I was, dude."
>you shrug; if it makes her happy
>"Yep. now lay down."
>you feel her scurry along your legs and she yanks your zipper down
>then wrestles your dick out
>"Besides. How else do I get to have fun with a dick bigger than I am. I need my workout!"
>your starlet tugs away
>and you've gotta admit... it's pretty fucking amazing.

>you can't believe you missed it so much
>the tiniest little claws on your thickening dick
>the little line of wetness as she licks you and circles your girth
>and her strength as she rubs her fur over the full length of you
>the pressure as she squeezes her arms and legs, occasionally standing on your balls
>Sam flexing her little feet sends a tingle up your spine
>with an expert pumping, locking her legs around you and running her arms up and down, you finally peak
>and with a rapid climb, you watch her mount your tip as you clench and cum
>she's sprayed from beneath and gets glazed like the worlds sexiest pastry
>one eye covered, she looks at you with a huge smile
>"You have no idea how much I missed that. Alright, your turn."
>you groan about having to lick your own juices off of her.
>"You've got two options, buster. You clean me like this, or you're licking every inch of me when I'm as big as the island."
>tempting, but okay, fine
>you take your medicine like a man and clean her off
>nothing like the taste of salty, sticky you
>but with that done, you settle into fondling her with your tongue
>the pleasant give of her tits
>the firmness of her toned body beneath the smooth fur
>and the little parting lips that you can barely squeeze your tongue tip into
>her writhing, squeaking, blissful form enjoying every moment of it
>then a tiny spray of her femcum to help wash away your own
>Sam gives you a final gift before you settle in for the night
>as you fall asleep between her soft tits as she grows as big as the villa allows

>a year and a half later, you're attending the Secret of Nihm remake premier
>and you've gotta say, it's awesome
>Sam's a natural actress
>a shame they had to make her wear a suit that covered her 'best side'
>but you have to admit, she looks great in dyed brown fur and a red cloak
>after the showing, the standing ovation and your little turn in the spotlight as the out-of-film Mr. Brisby come and go
>of course you tied the knot
>though if anyone asks it's for the money
>and totally not because having a girlfriend that can grow bigger than a skyscraper and shrink as her classic six inches
>work lines up for her, so you're all over the place most of the time
>but you make it work
>after all, you only need room for one to get each other off
>thanks to that, she's at her preferred, natural height a lot
>and it makes those times when she's huge all the more special
>like today
>you're up to your shoulders in her and grasping her button for dear life
>her insides are clenching you hard as her screams echo through a disused quarry
>you're there 'inspecting the filming location'
>you followed her everywhere anyway, so now you're part of the film crew
>a geyser of cum pumps you out and she sighs with relief
>"Y'know what? I could go again."
>you say you need a minute
>"Ah, you'll be fine."
>she hands you a familiar briefcase
>you chuckle and set up a syringe that'll have you pushing two hundred feet
>not like you need to worry about quantity any more
>Sam bought shares in the company and has a regular supply
>they discontinued the P.C.E colossatol, but she's fighting to get it back
>"Actually... how about we replicate the scene where I wrap myself around your dick."
>you wait for her to shrink
>"Nah, dude. Other way. I think you'd look good as part of the skyline."
>you gulp and line up ten syringes
>time for your day in the limelight
End