"You've a lot of explaining to do!" Smelly Rat growled up at Eric. It was now the next day and the scruffy, naked rat girl was hunched in Eric's house, growling up at him. She looked ragged, flushed from her trip to his house, and panting still from the exertion.
"Yesterday was fun, but you didn't tell me you weren't going to reverse it." She twitched, agitated. "No clothes around and I had to sneak out of my own because my parents consider me an animal, not to be trusted by myself." She skulked back and forth in front of the seated Eric, who sat on the edge of his bed observing his agitated girlfriend, a sly grin on his face. He could tell she wasn't really mad at him.
"Of course the trip over was great fun with everyone shouting at me... and the dildo's!!!" She paused, staring him dead in the eyes, "the rat dildos..."
She bit her lip.
"Why Eric!?"
Eric's mouth opened and closed, his first chance to speak, "because... well... you said kinky. And the last time you asked for kinky, well it included rat cocks." He shrugged.
Smelly Rat paused. "Well... okay. That's fair... they were. They were a nice touch. You've nooooo idea what they did to me last night." She rubbed her abdomen, even now missing its physical presence.
It wasn't the physical longing that had stuck with her though, because of them she had mentally accepted something of herself. She needed rat attention, she couldn't do without it. Smelly Rat paused for a few moments at the thought.
"Sooo... do you want me to reverse things then?" Eric asked his twitchy rat partner.
Smelly Rat looked at him puzzled, "huh?! Oh... no... fuck no! You just owe me some tweaks!" She demanded. "You can start by pulling up that program" she pointed at the Chronivac, grinning evilly at him.
Promptly the two were seated by the program, Eric and his short, naked, rat mutant.
As the program booted she started rattling off demands. "Clothes, no more, home, I am allowed out, obviously. Strangers, they don't forget me, but can't do anything about it. School, same rules as home, naked and treated like an animal, but can do what I want. Don't particularly want to feel cold either please."
Eric had begun typing as she rattled everything off. She took a deep breath. "Aaaand you owe me one warm rat cock..." Eric paused and looked at her. She bit her lip, looking down at his crotch. "Could you try, with. You know, the machine. Give yourself one and try it out? I think. I think I need to feel a warm one again."
Eric pondered it for a bit, Smelly Rat looked so hopeful. "I think... I think I could do that". He concluded, squeaking in delight she grabbed his face and gave him a big buck toothed kiss. Beaming she pulled back and exclaimed. "Cool! Gonna use your shower, my name might be Smelly Rat, but I do need to clean myself every once in a while".
As soon as she had scampered from the room Eric punched the air in success. "She's defo gonna ask to change soon" he quietly cheered to himself. Pulling up saved tabs of the Chronivac he filed through presets images of what Smelly Rat would look like s various percentages of rat DNA. They ranged from the current 5%, all the way to fully feral. He had labelled them all too, about how he felt about them, or what he thoughts about the images.
Currently 45% "anthro babe" was his favourite, though he was warming to 65% "furry short stack". The addition of full body fur and the size change really made her look soft and fuckable, even if her top pair of tits basically vanished by then. Cock hardening he gave his penis a quick stroke while flicking through sliders. Things that wouldn't actually be changed in her baseline and were just cosmetic Chronivac changes.
Fur colour, hair styles, nipple size. All he played with while the hot water ran in the nearby bathroom. He turned the image into a top heavy bimbo rat with pink fur. Then a sleek, lithe and tall creature with flat chest and outrageously long nipples. Finally, pushing a new option he gave it a heavy cock and balls, just to see his girlfriend as a futanari. All tickled him greatly and he saved them as preset options to look at later, again giving them inventive names.
By the time the hot water was off, and a now clean but still very naked Smelly Rat appeared, he had switched the program back to normal, having implemented all of Smelly Rat's societal asks, as well as researching into how to set up a rat cock for himself.
"Hey stud!" Smelly Rat called out, closing the gap to Eric again and drawing him in for a long kiss. Naked and hot she melded into his body, squeaking and laughing into him.
"You seem in good form!" He commented. She smiled at him, licking her lips idly.
"Yeah! I... had a lot of fun yesterday and... I think I've sorted out some personal stuff..." she smiled enigmatically. "Oh yeah, care to elaborate". Eric probed.
She chuckled, "No no... nothing that affects anything right now. But... I might have some surprises for you some stage." She exclaimed. "Now." She held up a leash. "Collar me and take me to school. This Rat needs to show off."
---
Showing off off course meant debasing herself in front of the entire student body. First in the hallways, then the classroom, finally the canteen.
Like a loyal animal she stuck to Eric's side, never seating herself, but instead crouching beside him. What Eric was most surprised about though was how much she paid attention at school, and how much she continued to be the perfect scholar in between her horny episodes. She even took to making sure her homework and studies got done that evening. When asked about it she simply stated with a wicked grin, "I want to prove rats are cleverer and better than people".
"You consider yourself a rat now then?" Eric probed, to which she put down her pen and thought. "Well... I'm not exactly a human anymore, and it isn't exactly reversible... I've made my peace now with this." She waved dismissively at her mutant body. "I mean, I've been living in it for months now."
"Fair." Eric shrugged.
With a conspiratorial smile Smelly Rat dropped her pen and leaned, "and you know what, I honestly think I prefer this body now. It feels better to be in, all my senses feel more engaged. And sure my face looks weird with big ears and buck teeth, and yeah I've totally let all my body hair grow out, but honestly... I think it suits me better... I'm a damn fine looking rat mutant". She and Eric's grins widened together as Eric leaned in.
"Totally agree, I mean. You were a babe before, but now **chefs kiss** you're the most exotic sexy creature I've ever seen." Smelly Rat blushed a bit and giggled, "Exotic. Yes. I like that description."
Eric continued, "yeah, who would have thought melding human and rat DNA makes something so sexy."
Smelly Rat laughed. "Oh Eric, have you never been on the internet!?", his eye went up as she pulled up her phone from her schoolbag. She pulled up some pages and turned around the phone, revealing a sexy antho rat pictures, "human rat hybrids are a total kink online". Eric's eyes flicked over the selection shown and he noted,"fuck, they're totally hot. Waaaay more transformed than you though."
Smelly Rat pulled the phone back and looked at them again, clearly pondering the implication of that statement. After a long pause she carefully said.
"You'd... would you have sex with an anthro like that. I mean, would you be with one like that?"
"Of course I'd love you if you looked like that, I love you babe." He stated reassuringly.
She sighed and tried again, "that's not what I... hmm... what I really mean is, would you prefer to be with an anthro like that..."
Eric's jaw dropped,
"...or with me like I am now?"
Months or even weeks ago, Eric would have been too afraid to tell Smelly Rat what he really thought, but now, after all that had happened, she was clearly getting into it, now was the time.
"I... I think you would be so hot. I would love to be with you as a full anthro."
"You'd prefer it?" She probed,
"I'd prefer it yes." He confirmed. Her face was unreadable.
"You'd prefer if I was mutated more... permanently?" Still unreadable.
Eric threw the hail Mary. "I would. Permanently yes."
She looked back down at the pictures. "Hmmm...". A finger went to her lips. Then her head popped up.
"Yeah... okay... fuck it." She squeaked.
Eric was surprised, and delighted. "What!? Really???"
She shrugged, "yeah, why not. I've been dreaming about it for months, pretending first like it wasn't happening, or that I shouldn't be thinking like that. But you know what, I was always fooling myself, from the beginning. I am soooo totally into this permanent change thing". Her face was completely devilish now. "The thought of mutating my body to be more and more rat like is the biggest turn on in the world. You'd better be sure you want a furry girlfriend, because when I'm done I'll be completely unrecognisable.... fuuuuuck..." she paused for a moment, "felt good saying that out loud..."
She unravelled herself from the chair and stood up. "Well, why not start now!?"