The scientists at Horizon Labs presume they have a pretty decent grasp of the capabilities of the Animalia virus at this point. But occasionally, something will occur that will surprise even them. And it wasn't always because of the uplifting of a new animal species. For instance, the conversion of Rose took everyone by surprise.
Rose's actual name was Reiko, but she generally went by the name of 'Rose'. When asked why she called herself that, she would often say "Because 'Carnation' is too much of a mouthful." Rose certainly stood out more than the average Japanese girl. She was considerably more spunky than the average ballerina or gymnast, mostly because of her hair. At a very young age, it had somehow been permanently dyed pink. No one was quite sure how that had happened or if she did it on purpose, but her hair has remained pink ever since, even her eyebrows.
However, this pinkness probably made her stand out enough to get her the attention of human traffickers. To some more twisted, perverted minds, Rose might seem like an ideal sex slave. While Rose was unlucky enough to be kidnapped and subjected to brainwashing techniques, she was extremely fortunate to have been one of the girls that was liberated by Interpol and taken to Heiya Island for recuperation. Thankfully, Rose wasn't too far-gone to deprogram her, though the experience rattled her some. As much as she wanted to return home, she wanted more protection. Becoming an Animalian woman would make her a lot harder to kidnap again. She had chosen a mouse in particular because they were very good at escaping. It would have been a simple enough procedure, but things took a very unexpected turn.
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Befitting a ballerina and gymnast, Rose was lithe and slender in frame. Befitting a Japanese girl, she was also on the short side. Overall, though she was 16, she looked quite younger. How that fitted into the traffickers' perverted desires is best not though about. As such, the medical gown Rose was currently wearing draped over her a lot, but she didn't want to get naked yet or grow out of her clothes.
Rose was relieved when she was left alone after the injections. She thought she could handle herself pretty well, but those slavers kidnapped her so easily. That rattled her down to the bone. Maybe it was just as well she was becoming a mouse. It would reflect her timidity quite well. Her self-pity got sidetracked as she started feeling warmer. That must be the fur starting to grow on her. But then she started feeling much hotter, particularly between her legs. Well, she was alone and no one was watching. She may as well relieve herself.
As there was nothing beneath the hospital gown, it was easy for Rose to slip her hand underneath it and start fingering herself. Pretty soon, her other hand was massaging her modest breasts, which becoming less modest. The hospital gown was losing its slack as she was growing. As more skin was bared, her fur became more easily seen. That was when things took a strange turn. Instead of being the myriad possibly colors for mice, or even plain white, Rose's fur was coming as a pinkish shade. Not as bright a pink as the hair on her head, but a pink not too far removed from skin-tone.
For the moment, Rose was oblivious to the odd shade of her fur, more concerned in getting herself off. Her breasts were gaining a lot of mass and straining against her increasingly flimsy gown. With a small grunt of annoyance, Rose ripped open the gown and gave a sigh of the cool air on her new fur. She paid little attention to the growth of her tail or the changes in her ears. Now she was free to fondle and caress her breasts. Like all Animalian women, she was going to be quite stacked as she was quickly leaving her teenage years.
But as she grew bigger, something became more apparent. While all Animalian women did gain amazonian proportions, it was usually to a scale comparable to the animal they were based off of. And Rose was quickly expanding beyond the average parameters of a mouse Animalian. No one shrank when becoming an Animalian, at least not in terms of height, but tiny animals tended to not be any bigger than humans. Rose had become the average height of a Caucasian woman before surpassing it. And while Animalians were fit, they usually didn't get more muscular than their new species would imply at first. Rose's muscles had grown toned before they started swelling into bodybuilder size, quickly going through the lightweight class and growing bigger. And while Animalian women did get muscular, it didn't overshadow their feminine physique. Rose was proving that considering the way her tits and ass were expanding to keep up with the rest of her.
Rose wasn't oblivious to the fact that she was becoming a giantess, but all that mattered to herself right now was relieving the fire between her loans. She moaned loudly as she groped her breasts, each one now at least as big as her head, if not bigger. She was shoving all her fingers into her snatch, almost putting her entire hand into it. She grunted and moaned as she neared her climax. Her mouse tail whipped behind her and she panted with her new rodent muzzle. She never felt such energy, such strength, such power. Finally, she let out a cry as she clenched hard. Her pussy gushed as her breasts let out small jets of milk.
Rose panted before taking a good look at herself. She grinned at what she saw. She had expected to become like one of those American models. She hadn't expected to become a small mountain of muscles and curves. She flexed and posed in the changing room's mirror. She had heard of female Animalian bodybuilders, but she wouldn't have expected a mouse to be like this. The pinkish fur was also a little off, but it was small potatoes compared to the rest of her. She certainly didn't look like a timid mouse. She didn't feel like a timid mouse. In fact, she never felt more confident in her entire life. No one was going go to kidnap her, looking like this. This Rose has too many thorns to tangle with.
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Rose's transformation baffled the Horizon Labs scientists. They weren't sure exactly why she turned out so huge. Rose attributed it to her ballet and gymnastic talent, but the scientists were clearly skeptical about that. They were currently looking for some other plausible explanation. They were looking through her family tree for anyone she could have inherited dormant genes from. They looked to see what kind of chemicals the traffickers could have used on her, or even what could have permanently dyed her hair. They were even checking to see if Rose could have somehow gotten her virus sample from Lenny, who she was only a little smaller than now.
But while the scientists looked for answers, Rose was looking for a new path for her future. While she still possessed grace even for her new size and body, being a ballerina or a gymnast has become a lot less feasible for her. There was a reason that slender builds favored those professions more. Rose's bulkier form put her at a bit more of a disadvantage. But that didn't matter much. With her new body, she could easily be a bodybuilder, a supermodel, or any other profession that involved showing herself off. She certainly had the confidence to go through with it now.