"You're certain this will work?" the G-man said. He was a tall man, straight as a ruler and with a suit to match. Despite his seemingly unflappable demeanor, he was nervous about what was about to happen. He always was. The scientist in front of him seemed less concerned, almost proud with his newest assassination technique.
"Without a doubt. The compound has already bonded to her body, and the conditioning has gone off without a hitch. Now we wait for an increase in heartrate."
"A fight or flight response?" the G-man asked, head tilted just enough to be visible for a trained eye.
"Indeed. No need to lose our weapons to a surprise attack."
"We picked our subjects to be as non-threatening as possible. This seems redundant"
"Redundancy is useful. It makes the difference between one blocked bullet or fifty."
"And if the subject doesn't feel threatened?"
"Electroshocks, delivered to her chest. The chips are multi-purpose, not only do they force the body to make compound-06, they will also activate it. If needed, the shocks can be put to the level it should stop her heart, if things end up dangerous for our interests."
"Good work. You always were efficient. Now, what will be the test run?"
"Our target is already in place."
"What!?" The G-man only barely managed not to recoil. He was moving on to a first test without lab results!?
"I assure you, nothing will go wrong. If it doesn't work, there is a hungry orphan on the streets of Detroit. If it turns too dangerous, there's a DEAD orphan in the streets of Detroit. Nothing new there, is it not?"
"The idea was to fix that with the removal of the Detroit target."
"Yes, well... Let us begin, then."


The buildings were as tall as they were filthy, Anya noticed. And the buildings here are really tall. It's impressive just how much filth has caked on, soot and residue from city life. It made her feel uneasy, to say the least. Her outfit was simple. Shorts, a tank top, a cute hat and sandals. It was warm enough, to be sure, but in this city it made her feel exposed.
She has to get to the biggest building. She didn't know why, but she knew she had to get there for some reason. She doesn't even remember why or how she's in this massive stinking city. But she knew she had to get Gerderstein's company, she had to enter the lobby and there it would all be good. It would be fine.
There weren't many people around. Not on foot, anyway. The city stunk of cars and oil, and roared with the sound of engines and horns. Everyone was in a hurry to be off the street, never standing still, all with their car doors locked. The foot traffic was similar, most of them moving as fast as they could without appearing conspicuous. It made for a very fast and dangerous city. The ones that were slow are the dangerous ones.
"Ey, lil' gurl... Where is you goin'?" Said the closest example of a slow mover. He was big, and fat. His skin as black as the asphalt he lives on.
"I need to get to Gerderstein's company." She said, looking up into the black man's coalblack eyes. His teeth were shining, almost blindingly so as he moves closer to the girl. Two meters against one meter and twenty centimeters. David and Goliath.
"I thinks I can get you there, if you do lil' ol' me a favor. Y'see, I got these friends, and they haven't seen a little cutie like you in a long, long while. They'd even pay me pretty good money if you co-operated. It's a win-win for both of us. " When he started his story, his way of talking seemed to change. Like he rehearsed it, to be understandable.
And threatening.

Anya felt her heart beating harder and harder as the massive man loomed over her. The blinding smile and the pitchblack eyes seemed to make him a demon in her eyes. She was backed up against a wall as the figure drew closer and closer.
The figure pulled out a knife, and told her not to struggle.
Anya could only barely hear the words over her own beating heart as she felt herself clench up! Every muscle in her body felt TIGHT like she was getting crushed by her own skin. She tensed up before her back bent back and she felt herself drooling. Everything seemed to be moving, twitching and clenching! Her arms visibly grew in size in just a few seconds, muscle developing and overdeveloping rapidly, and her torso is quick to follow. The threatening figure just stares in amazement at the girl growing so very muscular before his eyes, her legs finally catching up to the rest of her as her tank top is stretched to the very limit, revealing her rippled abs. Before the man could say another thing, the not-so-little girl's fist flew upward at a blinding speed! Her knuckles bury themselves deep in the man's most private, soft and valued area of all. If one were to listen very carefully, one would hear something similar to a walnut cracking, followed by a scream that can only be heard by dogs.
The girl stood there, breathing heavily for a few moments as the man collapsed. Whether the pain had killed him, the shock or he was just comatose is unknown. For the girl, it didn't matter.

She looked at her fist, opening the hand. It felt... different. She felt all manner of tendons and muscles working together, her forearm nearly three times as big as before! Following her arms, she looked at her bicep. Experimentally, she flexed the new muscle, surprised to see the ball of muscle and power rise so much. Her neck felt thick, and her belly was as hard as steel. She rapped on it with her knuckles, utterly enthralled by her new body. Her legs, too, have grown. Her shorts, which had been so wellfitting before, now feel like a steel prison for her small, but noticeable hips. As she looked herself over, she felt a tingle. An unfamiliar tingle, but a good one. It only grew better when she saw the man before her, crumpled up and destroyed by her.
She shook her head, the conditioning reminding her of where she needed to go. She needed to go to Gerderstein's company. Once there, she would kill everyone inside. Then...

She walked forward. Only a little further, she knew, through the alleyway and across the street. Her heart was still pounding harder and harder, but not faster. There was an eerie sense of calm over her, an intent that even the alleycats seemed to understand. An exodus of animals throughout the alley, as the muscled girl walks by. When she reaches the street, she crosses it in seconds, her powerful legs allowing her to fly forward at speeds that would break most men. She rams through the glass doors, the shards not even scratching her skin, the metal bending to her power as her heart beats. It thumps her blood and the compound through at increasing rates. Her teeth bared, her eyes dilated and drooling, Anya jumped upon the first person that came to help.
The skull came apart like putty.
Her heart was still going. She could hear it, she could taste copper in her mouth as she continued her rampage through the building, leaving none alive. the further she went, the more her heart beat, and the more her heart beat the stronger she felt. Her tank top tears apart, her shorts explode off her body. She was already at the size of the average adult man, even beyond. From the outside, the police department begins to surround the building. Anya, however, reached her target. The CEO's office.
The police charges inside when Gerderstein's mangled body splatters on the ground. Before the SWAT team enters, though, the roof of the building explodes!

Rising up from the rubble, was a massive, blonde girl. Seven meters tall, green eyes that have grown small. Bulging muscles are visible even from the bottom of the building, which is crumbling more and more from the increasing weight of the massive creature above. Evacuation begins as the mayoral Kaiju plans go into action, the plans they made as a joke having turned into a horrifying reality. The girl laughs to herself, her heartbeat slow but loud. With every beat, she feels herself growing yet larger. At the top floor, she had to crawl on her knees to even fit in the hallways, crushing any guards that appeared under the palms of her hand. Whenever she wasn't fighting, her hand was buried deep in her pussy, stimulating her further. Her nipples erect, her muscles flexing and bulging, her veins almost visibly swelling with every heartbeat. She couldn't stop herself from moaning as she came closer and closer to orgasm.
Now that she was free from the building, and she felt herself grow ever taller, she was not even trying to stop herself. Her tongue stuck out, lost in the pleasure of power as she drooled and masturbated further, even taking up anything large enough to use as an improvised dildo. Soon, she was growing yet more as the police evacuated the area. .
When her feet land on the ground, the city shook. She outgrew the building in just a few minutes, the swatvans she was using as her masturbatory aid were crushed by her pelvic muscles alone when she came. Her hands were left abandoned, as the girl began to rub herself against the buildings, desperate for any kind of stimulation to bring her to orgasm again. The collapsing buildings against her ever so small breasts, the angles of the flats against her lower lips, even the crushing of cars and buildings under her feet brought her yet more pleasure. Still she was growing. She was sweating so much, feeling unbelievably hot even though she was as bare as the day she was born. Suddenly, she noticed little pops and tingles against her skin.

The army had been called in. Jets and helicopters were pelting her with bullets and missiles, but she was so large that it hardly mattered. She was taller than even the tallest building in the city by this point, and she was wreaking havoc. The little pops were little more than tickles, and when a rocket barrage slammed and exploded against her nipple she came right then and there, the liquid splashing down into the streets. She grabbed the little flies with her hands, and crushed it with just her fingers, the explosion causing more stimulation. No matter where she felt anything in the way of heat and pricks, it was pure pleasure. She began grinding against what buildings remained with her whole body, moaning languidly. Finally, when the city was in ashes, she calmed down ever so slightly. She lay on her back, flicking one nipple as she came down a little from her high. The army had given up defeating the massive giant, who suddenly got up when she found the rubble uninteresting. With nothing to destroy, she already felt less powerful. What is power without some way to show it?
She stomped through the country at breakneck speed, until she found a much smaller city. With the rubble of Detroit still between her thighs, she was glad for the opportunity to destroy more. The town does not last under her onslaught, the one saving grave being a relatively low amount of civilian casualties. The evacuation order was well-timed. After cumming again and again, splattering the ground with her juices each time, she finally lay down again, with only a few buildings remaining. After all that effort, she decided it was enough. She came so many times, felt her muscles bulge and her body destroy so much...
She was tired now, and she closed her eyes, fingers going over her steel abs and powerful legs before sleep took her.

In less than an hour, the massive creature shrunk, its muscles disappearing and her massive size with it. Soon, just a naked little girl lay in the middle of the town, dreaming and occasionally convulsing. She was still so very wet.
A small black van came to pick her up. Inside was the G-man and the lead scientist responsible for the unstoppable beast Anya.

"Your appointment should be finalized within the week, I've already discussed the matter with the sentate." The G-man said, taking care to cover up the girl in their van with a blanket.
"I take it they were agreeable?" The scientist looked at the G-man with pride and certainty. Unexpected result, but with such effect!
"They didn't really have a choice"
"The giantess 'virus' has them running scared?"
"Indeed. The threat of total annihilation left them running so scared it was almost pathetic. Our vaccines and wartime deployment will be easily attained."
"The project may grow difficult to contain, however. We never meant for this level of casualties, useful as it was. Her height and lust were never predicted"
"Why contain it? Let it spill over to our enemies, let the bodies pile up in the streets. In the end, they'll be begging to use our countermeasures to the 'virus'. We will be entering a new age! And we all have you to thank, doctor."

"Of course. To victory!" He raised his glass. The G-man did the same, and they drank. The G-man dropped his glass, and began coughing almost instantly, his body growing smaller by the second. In just a few seconds, he fainted and disappeared into his clothes.
The doctor was never going to use the G-man beyond his initial use. And besides, he would need more test subjects like Anya. Small, female, unexpected and conditioned. Any difference from the first test run might cause it to not work.
A little american tourist in Europe should increase his profits even further...