Sighing, Christina closed the tab with CYOC, and then her web browser. She stared at the home screen of her phone for about a second before hopping on to her Instagram.
"Seriously, why did I even think this would work, it's just a bunch of weird stories..." She said to nobody in particular, a little impatient that nothing happened with her post immediately.
Christina scrolled through post after post, seeing how friends were doing, the food they were eating. Nothing of substance was present, but that's about what she'd expected, she just needed something to do for a little. After a few minutes of scrolling, her phone froze for second. She scrolled down a few times while the phone wasn't responding, which didn't provide any response. Eventually the app crashed, returning her to her home screen.
"Huh, that's a little odd..." She muttered, opening the app again.
Upon starting up, the app looked normal, and she began scrolling once more. However, a couple posts down, she encountered an advertisement. She paused to read it. That wasn't something she'd normally do, but this was far different from your standard fast food or stock market app ad.
"Pick One." The ad read eerily. It was designed like any other standard ad, but the spaces for further words were left blank, almost like someone used a template and didn't complete it. The account behind the ad was simply named 'null' and there was no likes, comments, or any other interaction. The ad contained multiple pages, which Christina flipped through out of curiosity. They were equally plain, nothing more than 5 solid colored backgrounds.
Christina internally debated if she should pick one, just to see what would happen. She flipped through them once more: orange, teal, purple, gold, lime. She settled on the purple one.
"What could go wrong? It would just open a webpage, and I can close that. It was already okayed to be on here in the first place." She thought to herself as she clicked on the purple tile.
Her phone responded by opening the link corresponding with the ad. After a short load, the website displayed itself: her CYOC post from earlier. She stared at it for a second.
"I closed that, didn't I?" She said out loud.
Navigating back to the ad, she opened it once more, receiving the same result. Christina began to feel a bit uneasy. She just made that post, how or why would there even be an ad for that sort of thing. Her head began to throb a little, reminiscent of a headache, but something was different.
Unbeknownst to Christina, her head was actually growing, little by little. She felt two sharp tugs on the side of her head, her ears changing shape , becoming circular and moving up to the top of her head, now poking through her brown hair. They were covered in black fur, and picked up sound a little better than her previous human ears. The next changes were more drastic. Bits of white fur washed over her face, with black fur congregating around her eyes. She brought up her hand to inspect the changes, but was interrupted by the formation of her muzzle. Her nose turned dark as it pulled out in front of her, meeting her mouth as the structure of her jaw changed entirely. She gasped sharply through it, rubbing her hands along it.
"W-wha? The stupid story... This can't be real!" She shouted.
The changes continued, flowing to her hands from her face. They turned black, her fingers feeling oddly spongy as they became coated with fur. They formed large paws, with tiny claws at the end, but retained much of their human dexterity. The fur along her arms faded back to white as it washed over her chest and torso. Her breasts grew considerably, sitting heavily in her bra as they became coated with soft white fur.
"No no no!" Christina shouted as her stomach began to gurgle.
She reached downwards, patting her stomach with her large paws. Her slim figure was destroyed as fat began to amass around her belly, giving her quite the chubby appearance. Between her chest and her stomach, her shirt barely fit anymore, leaving it to show all her curves.
"Fuck, this is too much, what the hell is going on?!" Christina screamed as she fumbled with her phone, unable to operate it with her paw-hands.
The fur flowed downwards, expanding her hips slightly and wrapping around her crotch. Matching her torso, her lower half began to gain significant weight as well. Her thighs grew much larger, the black fur furthering their thick appearance. With a smooth 'bwoompf', her ass fluffed outwards too, filling up her jeans to their limit. A small prick of her tailbone and a strange chafing indicated a new change to her as well. She looked behind, only to be greeted with the sight of her massive ass and a small black tuft sitting above it.
"U-ugh... I'm huge?" She said softly.
Christina panted heavily, her body clearly overwhelmed by all of the changes and confusion. She was already warm with the fur, but now she was sweating up a storm, causing her and her room to smell more like a zoo than anything. To finalize her changes, black fur coated the rest of her legs, and her feet burst out of her socks. Much like her hands, they formed into large paws, although they didn't retain any humanity with them. She stood up, completely off balance with her much fatter body. At full height, she was nearly 6 feet tall, fitting her new form well. She took one step forward, tripping and landing with her ass straight up in the air.
"Oh for goodness—" She yelled before being cut off by a knock at the door.
"Christina! Sorry for being late!" A male voice yelled from the other side.
"Shit! That's right... I was gonna meet up with that guy today... He doesn't even really know me well, we've met like, once before! What should I do?" She thought to herself, pushing her hair out of her face and blushing.