Byrna Bunsen had a lot on her metaphorical table. She was busy, and had been busy for a while. Her doctorate project had, over the course of the past year or so, really started to ramp up. Results were coming in and experiments were being performed. The formula itself was as efficient as it could be, and she was slowly but surely refining the process, inching closer and closer to perfection. The downside, of course, was that she was slowly but surely running out of littermates to test it on, and who fucking knew where she’d find a fresh supply of rabbits with slime DNA to work with. Still, she was so close to a breakthrough. A magibiological revolution, completely overhauling the field. This didn’t just apply to buns and goos, anyone with even a hint of magical DNA would be able to bring those magical traits to the forefront if they so chose. Forget footnotes, this was the kind of shit that got entire chapters in the textbooks about you.

So of course most of her focus was on work. And, as the term drew to a close, Fiona started to have to dedicate more and more time to her own schoolwork and there went the rest of her focus. Girlfriend-slash-lab-assistant was busy, so not only did she not have much free time, she didn’t have anything to do with that free time. So she might as well just hyperfocus on her doctorate. Eat, sleep, work, repeat.

“Right now, the biggest sticking point is the amount of time it takes,” she muttered to herself, going over her notes one more time for the hundredth time (she’d counted). “Actually shifting species is relatively quick and painless, but the body continues to gain mass over a significant period of time. Lei’s still getting bigger, and Eve and Cherry have also reported that their uncompressed masses are increasing slowly but steadily. And of course that also applies to myself. Hrm. Inefficient.” This was just talking to herself for the sake of talking to herself. She’d already identified all of this ages ago, but sometimes explaining a problem out loud helped you notice obvious solutions that you didn’t otherwise pick up on. “So. The problem is long-term growth. Lei says she thinks she’s started to slow down, so obviously there must be a stopping point somewhere. So how do we get to that stopping point as soon as possible? Hm.” Byrna rubbed her chin as an idea began to form. “... Could it really be that simple? Well, I suppose there’s only one way to find out.” Byrna slid her office chair across the table to the phone. “So, I’ve obviously used up myself as a test subject, Lei is also out of the running. So are Eve and Cherry. That leaves Amber, Aster, and-”

As if on cue, the door to the lab was kicked open and a convenient littermate stormed her way in. “This is Connie Bunsen of BNN, coming to you live from the Harris University campus,” she said, turning to face her cameraman as she backed her way into the lab. “We’ve come to the Magibiology labs to meet with Byrna Bunsen, a young prodigy in the field who is in the process of making a significant breakthrough and has graciously agreed to give us a practical demonstration! Miss Bunsen, do you perhaps have anything you’d like to add before we begin?”

“The lab has a no photography rule, Connie.”

Connie, for her part, remained completely stoic as she made a small, barely perceptible gesture to her cameraman – also a rabbit, and now that Byrna looked at him also a Bunsen. One of Jazz’s litter, so no latent goo genes, but Blues was a good kid who didn’t deserve the indignity of working for BNN. “Feed cut?”

“Yes, ma’am.”

“Good.” She turned to face Byrna and immediately dropped the professional journalist facade. “You and I need to have Words.”

“I’m serious, no photography.”

“Byrna what the fuck is this I hear about you turning Lei into a giant goo monster? And also Eve and Cherry?”

“I-”

“Aht!” Connie made a sharp shut-your-mouth gesture with her hand before continuing her tirade. “Why the fuck did you not do me first? Do you have any fucking idea the kind of ratings we’re missing out on? This shit is TV gold and you’re holding out on me?!”

Byrna sighed. “I was just about to call you.”

“Yeah, four fucking Bunsens in!”

“Look, I wasn’t intending on turning Lei into a goobun initially. The point was-”

“Yeah, yeah, using goo genes to make you immune to disease. I did my research, I’m a journalist.”

“Okay, then-”

“You should still have called your big sister first, though!”

“Connie you’re younger tha-”

“Shhhhhhh.”

“Okay, look, did you at least get the Dean’s permission to film porn here?”

“BNN is not pornography!” Connie snapped. “We’re a legitimate journalistic organization focused on the most important issues to the rabbit community around the world!”

“It’s pay per view.”

“It’s not our fault that the most important issues to the rabbit community around the world all involve fucking!”

“I’m sure it is,” Byrna replied tersely, before firmly repeating herself. “Did you get the Dean’s permission?”

“Yes we got permission, I’m not incompetent.”

“Okay then. Like I said, I was about to ask you to help me test a hypothesis.”

“Hold on, hold on, we need to do this bit live. Jeff, connect the feed again.”

“My name’s Blues.”

“Just go live.”

“We’re siblings.”

“Jeff if you shut up and do your job I’ll suck your dick.”

“Okay well I guess my name’s Jeff now,” Blues said, giving Byrna a pained look.

“And make sure you keep filming no matter what! This shit is gonna send ratings through the fucking roof.”

“Yes, ma’am.”

“Good. Count me in.”

“Five, four,” Blues said before counting the rest of the numbers by hand.

“This is Connie Bunsen, once again cumming to you live.” Byrna resisted the urge to cringe as she realized what, exactly, Connie had just said. “Miss Bunsen, you were just about to tell us about your new hypothesis.”

“Right.” Byrna had, obviously, not prepared in the slightest for any kind of interview. That was probably intentional on Connie’s part – catch the subject off-guard to get more honest responses. “Well, Miss Bunsen, I think it’s probably best to start from the beginning.” Connie didn’t react to the obvious barb. Say what you will about her, she was a consummate professional when she wasn’t fucking her interview subjects. “My doctorate was originally on the idea of augmenting people with small amounts of slime genetics.”

“What would the benefit of that be?”

“Slimes are extremely robust when it comes to viruses, bacteria, and parasites. With just the right amounts of just the right genes it could make you extremely resistant to or even immune to most forms of infectious disease. Your body could automatically digest any unwanted foreign bodies.”

“What about wanted foreign bodies, though? Obviously there’s cosmetic implants to think about. Or what if the patient has a heart condition that requires a pacemaker?”

Huh, an actual hard-hitting question. Byrna had kind of expected Connie to just gun the fun bit, but this seemed to be an actual interview. Which was irritating because, again, Byrna hadn’t fucking prepared for an actual interview. “That was something we had considered, yes. There are currently ways around the body rejecting implants, of course, for vampires and the like. But there’s no guaranteeing that what works for vampires would work for slimes, and there’s obviously no precedent for putting a pacemaker into something that generally doesn’t have a heart. That was something I was planning to address after proving that the basic process worked at all.”

“But then something went wrong?”

“Well, I wouldn’t say wrong. More like... unexpected. But not unwelcome. The, ah, volunteer certainly seems to have adapted just fine to her new lifestyle.”

“What exactly happened?”

“The exact mechanics are obviously very technical, so layman’s terms; the subject-”

“Is this person to be kept anonymous, or can we get more details on them.”

That earned Connie a Look. “Yes, Miss Bunsen, the volunteer is to be kept anonymous on a live international broadcast.”

“Please continue.”

“The anonymous subject whose privacy we will respect was a normal rabbit but it turned out that she had a slime ancestor and so the process, rather than inserting small amounts of slime genetics, activated her own latent slime genetics and transformed her into a full hybrid where before she was not. And so, obviously, the direction of my research changed to working out how to do that intentionally.”

“Would there be any particular reason that would be a more useful line of research than making people immune to infectious disease?”

“There are a lot of people with latent mythical genetics out there and a lot of ways to accidentally bring those genetics to the forefront.”

“So your goal is to have that happen in a controlled environment, then?”

“Exactly. It’s much safer. And, of course, there’s other fringe benefits to becoming a mythical creature.”

“I’m told that magic can greatly enhance your sex life.”

God, the way she said it like it was a completely normal thing for a professional journalist to say out of the blue. It wasn’t like she was wrong, but you don’t just fucking say it out loud on live TV. You gotta be a little coy. This, right here, was why she didn’t care for BNN. No subtlety. Just fuck on camera all the time. “Of course, first the process has to be perfected,” she said, steering the subject away from sex.

“Which is what you’re currently researching?”

“Yes, exactly.”

“What exactly are some of the kinks you find yourself bumping up against?”

“Well, to once again simplify complicated concepts into layman’s terms; the transformation is an extremely resource intensive process that takes a very long time to complete. So I’ve been looking into ways to speed that process up, and I believe I’ve settled on something.”

“Which is where today’s demonstration comes in, right?”

“Exactly.” Time for the good bit, it seemed. Byrna stood up and gestured for Connie to follow as she walked over to her desk. “The key, I believe, is giving the transformation enough material to work with. Most magical and mythical creatures are, as I’m sure your audience is aware, very large. So, under normal circumstances, it takes time to build up the magic and mass, resulting a prolonged period of consistent growth. In layman’s terms; the bulk of the change is almost immediate but then you grow for a period of months – or potentially even years, if your final size is exceptionally big or if your diet is exceptionally light.”

“I see. And of course that constant change in size is going to cause all kinds of problems.”

“Yes. Not that you wouldn’t still have a lot to get used to if you changed all at once, of course. But you’ll have a lot more to get used to over a much longer period. And, depending on the species, it could also have some severely deleterious effects on your health. Slimes don’t have bones but that’s not common. Luckily, I believe I’ve come up with an effective solution that just needs to be tested.”

“What might that solution be?”

Byrna picked up a hypo-injector and stuck it against her neck. “I think it would be easier to show rather than tell in this case. Open wide, please.”

Connie gave her littermate a very brief flash of a Look that said something along the lines of ‘you aren’t allowed to complain about 
BNN being needlessly horny anymore’, but didn’t actually say so out loud. To any outside observers, she was a consummate professional, lowering herself into a kneeling position with her hands on her knees and her mouth wide open, tongue hanging ever-so-slightly out. Of course, Byrna wouldn’t have asked if this weren’t the most efficient way to do it. Not necessarily the most effective in terms of delivering the slime mutagen, but that wasn’t the goal this time. The goal this time was to give the body enough mass to work with right away in order to minimize the time it spent growing to its final size.

And the overall best way she’d found to do that was to fill the subject full of absurd volumes of semen. Cheap, delicious, protein-dense, and she was confident in her body’s ability to make several hundred million tons of the stuff. With a snap of her fingers, Byrna’s clothes were teleported somewhere out of the blast zone. “You can get naked if you want.” Connie did not get naked. Probably thought her audience would like to see her outgrow her clothing. It didn’t really make much of a difference, though – when Connie gooed, her clothes were going to end up getting vored long before they got outgrown. Which, Byrna supposed, was hot in its own way. “Give me a moment to come up to full temperature and we’ll get going.”

“Do you need a hand with that?”

Byrna shrugged. “If you want.”

“I want,” Connie replied, reaching up and gently grasping Byrna’s shaft with one hand while the other cupped her balls.

“You’re probably going to need both hands,” Byrna said calmly. That one hand Connie was using was, frankly, woefully inadequate. She wasn’t the most hyper person she knew – in terms of length, without any outside interference, her dick was longer than Lei’s but smaller than both of Fiona’s. But she made up for that mild lack of length with raw girth. It was maybe slightly thicker around than her thighs, which were already pretty fucking thick. Byrna had never been the most athletic person, and even before getting goo’d she had been pleasantly thickset. And, much like her other sisters, getting goo’d had been an all-around enhancement to all her physical features. Both hands would probably be inadequate.

That didn’t stop Connie from trying, though. Her efforts were admirable, pressing her soft furred hands gently but firmly into Byrna’s cock and slooooowly pumping it up and down. “Wow, yeah, I was gonna say that you’re already at full mast but this is way softer than I expected. I guess you’re a grower and a shower?”

“Actually, my flesh is a lot softer and gooier than the others. That’s a personal preference thing.”

“Interesting!” Connie said, leaning in to give the shaft a lick. “Tastes like blueberries~”

“That’s also a personal preference thing.”

“One question, though. If you’re already fully hard, then what did you mean by-”

“Ah, speaking of which.” Byrna unceremoniously grabbed Connie by the back of her head and shoved her all the way to the hilt just in time for her balls to approximately sextuple in size, going from approximately the size of grapefruits to big enough to use as beanbag chairs. “Sorry, but I needed to boost my output exponentially for this to work. And, you know, when your balls grow this big out of nowhere it can be kind of hard to hold back, and for this to work right I need to make sure you don’t spill a drop.” Byrna bit her lower lip firmly. “Mnnnnf, speaking of which, I think I’m at my limit. Hold on tight because this is gonna be a lot.”

Connie had just enough time to spare her sister a brief glower before the eruption. Really, she should have seen this coming a mile away. Byrna hadn’t exactly been subtle about the fact that she intended to pump her full of multiple tons of cum. She snapped her fingers, using a bit of magic to ensure an air-tight seal, before letting loose. She bent forward and grabbed her sister’s ears, hips bucking wildly as she came and came and came and came, pumping a steady but copious flow of bun cum down her sister’s tight throat and right into her gut. A few hundred gallons of the stuff per second, which sounded like a lot until you remembered how much she needed to put out. Hundreds of millions of tons equated to hundreds of billions of gallons, even when you factored in that cum was denser than water. At a rate of three hundred gallons a second they’d be here for like a decade, maybe more. Byrna obviously wasn’t in the right mental state for anything beyond the quickest and dirtiest of mental math. “Speaking of which,” she grunted as coherently as she could. “I’m gonna have to pick up the pace a bit or we’ll be here a while.”

Slowly, fighting through the overwhelming arousal, Byrna lifted a shaky hand and snapped her fingers. “Aaaaahnnnnnn~” she moaned as her balls lurched even bigger – and her output once again increased exponentially. She could no longer muster the strength to sit up, and so she just sort of let herself collapse backwards onto her new built-in waterbeds. “We’re – mnnnnn – we’re still going to be here for about an hour, by the way. I could make them biggerrrrrrr but I, ah, I d-don’t think I could go farther than this and stay lucid.”

Connie, obviously, did not respond. Her mouth was otherwise occupied and her hands were busy playing with her tits while her belly inflated like someone had stuck a water balloon to a firehose turned up to maximum. Thankfully, unlike that particular analogy, some basic magic meant that Connie wasn’t going to meet the same quick and gruesome end as the water balloon. The room around them creaked and groaned as the younger rabbit got fuller and fuller and fuller – and, by extension, bigger and bigger and bigger. Turns out the university’s macro-proofing still kicked in when faced with copious cumflation. That was really the closest thing to a worry. She wouldn’t have agreed to test this procedure on Connie if there was a chance of popping her, but she could live with her lab getting outgrown. It’d be a pain, but so long as no one got hurt it was a pain she could live with. Maybe bug Lei’s new rich friends for some funding? Hell, she’d probably do that anyway. She couldn’t imagine Azure Dreamer wasn’t aware of what she was doing, nor that she wouldn’t want a piece of the pie while it was still baking.

God, she was still fuckin’ going, too. Maybe she should have gone bigger after all? But she’d not been exaggerating when she’d said that she couldn’t go bigger and hold on to lucidity. As it was, thinking straight was a battle, and not one she was confident she could win. Of course, on the other hand, she didn’t entirely need to win. So long as she bounced back after she finished filling up Connie she’d probably be fine. Probably. Whatever. This line of thought was still going and so was she. An hour was a lot of time to just sit around doing nothing except cum, and the only possible conversational partner was, as she had already noted, otherwise occupied. “Mnf. Blues, do you have anything to add?” He didn’t respond – cameramen were to be seen and not heard, she supposed. “Shoulda brought a fucking book or something,” she muttered. Left with no other options, she did her best to nestle comfortably into the violently churning bed of her balls and allowed herself to briefly drown in pleasure.

Time had slowed to a crawl when she tried to fight it, but somewhat frustratingly once she allowed herself to give in to the pleasure that hour-long climax seemed to go by in an instant. A very small part of her was disappointed that she’d expedited the process, but only a small part of her. No matter how fun it sounded to her animal brain, the more rational parts of her were perfectly happy to not have a nearly two decade-long orgasm thank you very much. Thankfully, being a slime meant not having to worry about things like muscles getting weak after an hour-long cumshot, so she could pretty easily get right back to work. She sat up and gently removed Connie from her shaft in a way that wouldn’t result in her rolling over and out of conversation range – a very real concern, considering the aforementioned hundreds of millions of tons of cum inside her.

“Jeff, cut the feed. You could’a fucking warned me.”

“I thought it was obvious!”

“It was obvious you wanted me to suck your cock, not that you were gonna facefuck me and then turn me into a skyscraper-sized cum balloon!”

“I figured you could intuit it!”

“Okay well when you do this to Aster make sure you warn him first, okay? Amber, too. Jeff, go live again.”

“My name’s Blues,” he repeated, clearly emboldened by Connie’s lack of mobility.

“I know your name, but you’re an intern. All interns are named Jeff. I was a Jeff when I was your age.”

“I’m just saying-”

“Two blowjobs, a titfuck, and if you stop backtalking and just do your damn job for the rest of this interview I’ll let you breed me.”

Blues sighed. “Yes, ma’am.”

“You know, I could always use another lab assistant.”

“Don’t you fuckin’ poach my Jeff, Byrna!”

“I’m not poaching anyone, just putting a fact out there.”

“Jeff, go live before whatever shit Byrna did to me kicks in.”

“Yes, ma’am.” Once again, J- Once again, Blues counted Connie in, starting at five and not saying three through one out loud. Connie took that time to regain her composure, closing her eyes and taking a series of deep breaths.

“Welcome back! As you can see, I’m upside down. My clothing is still intact, though!” Not technically incorrect, though her top’s buttons had all been very thoroughly popped in the course of the cum inflation. Everything else was still intact, for now. “That’s phase one, then, Doctor Bunsen?”

“Yes.” Connie gave her an expectant look, and Byrna sighed and continued. “Like I said before, the transformation is very resource intensive. Not only are you changing your species, you’re almost always going to end up much bigger. The general species change will usually happen fairly quickly, but it’s that last part that drags the process out. Your body will take a portion of what food you eat and transfer it into extra mass. Again, this can take days, weeks, months, or in the worst cases even years. That time means you have to adjust to growing almost constantly, and it also means you’re not getting as much from your meals as you otherwise would which can potentially be very bad for your long-term health. So, as a solution, we can provide the body with an adequate amount of protein-dense fuel to provide mass for the transformation. In layman’s terms, I fill you full of cum and then you grow. Normally we would take some time to work out how big your final size is likely to be after the species transformation takes place. But I prepared all of that in advance for the sake of the live broadcast.”

That was a bit of a white lie, of course. The first time Byrna had heard about the broadcast was when it was already live. She had done the calculations in advance, of course, because she intended to eventually test the procedure out on her younger siblings. The new iteration of the process did require extra calculations, of course. Byrna had done those in her head as best as possible when Connie forced the issue early, but the audience didn’t need to know that.

“I see! Fascinating stuff. The transformation would be phase two, then. How long, on average, does that take?”

“It varies, depending on the person and their species before and after transformation. At the shortest it takes a few moments, at the longest it can take a few days, though that particular extreme is rarer. You can also speed up the process with sexual stimulation.”

“Interesting! Would you care to demonstrate?”

Byrna suppressed a sigh. She had seen this coming, and was prepared. “Of course.” There were a lot of ways that Byrna could go about this, but she had to be careful. Connie wasn’t exactly going to end up small, and that meant certain logistical concerns had to be considered. The lab’s macro-proofing could only keep up with so much bun, and Byrna herself needed to be able to keep up as well. There was also Blues to consider. That was the real sticking point. The lab would be fine, and Byrna was very durable. But Blues was, as far as she knew, just an ordinary Jeff. It could be easy to forget when everyone you know is some form of magic weirdo, but most people in the world aren’t magic weirdos, and those people who aren’t magic weirdos are a lot more fragile than the people who are. So, for his sake, she needed to deal with this in a very specific way.

“First, “I’m going to kick-start your digestive system a bit.” That was another white lie. She was going to kick-start Connie’s digestion, but at the same time she was also going to set up some safety nets around Blues. Just a little magical bubble that would keep him (and his camera) safe. She also set up a spell that would slowly relax her own compression spells as Connie got bigger so that they’d roughly match, without one outsizing the other, and a few other contingency spells (just in case) with one snap of her fingers.

“Ah!” There was a low, distant rumbling noise from deep within Connie’s body. “I think I feel it working!”

“Next, the stimulation.” Byrna grabbed what was left of Connie’s shirt and removed it, casually tossing it to the side. Without giving her sibling a chance to react, she grabbed her tits and squeezed them. Connie let out a sharp gasp, hips rocking slightly at the sudden stimulation. “As we grow, I’ll have more access to Connie’s body and more options for stimulation, but for now the breasts are the most comfortable and easily accessible. Obviously, once the process is finalized, a lot of this will be automated. I’m not an engineer, though, so for now we just have to get our hands dirty.”

She punctuated her statement by reaching up and giving Connie a good solid smack on her ass. “Ahn! Hey!”

“Talking impedes digestion.”

“N-no it doooooohnnnnggg!” Connie’s attempt at a rebuttal was cut off by Byrna pinching one of her nipples and gently but firmly pulling. That had always been one of her big weak points, along with scratching the base of her tail and squeezing her balls. If you knew how to do it just right, which Byrna did, any one of those was enough to immediately get her to cum. Her hips bucked several times, and her mouth hung open limply. “No faiiiirrrrrr~”

“It’s entirely fair. Now hush, it should be kicking in right about now.”

Connie was a Bunsen, and Bunsens tended to be built. Connie was no exception, with ample curves and a sizable endowment that had been more than a match for Byrna’s own before she’d turned herself into a slime. Not exactly on par with some of the more outrageous folks – she obviously didn’t hold a candle to Azure Dreamer, or even to Lei post-gooification – but she still had respectable E-cups, a very nice ass, a solid eight inches of cock, and she was in deceptively decent shape.

Byrna took a moment to take it all in one last time, before Connie’s proportions inevitably got much more ample in concert with the gooification. It had happened to Lei, it had happened to Byrna herself, it had happened to Eve and Cherry, and it was going to happen to the others too. Connie included, obviously. Byrna could already see the slow but inexorable beginnings of her gooification. Her tongue lolled out of her mouth, drooling pale green saliva into her cleavage. That confirmed a theory that Byrna had been developing – Lei, the eldest, had turned from a white rabbit into a purple goo. Cherry, the youngest, was red. Connie was between Byrna (blue) and Eve (yellow), so of course she was green. She had no idea why they were rainbuns sorted by age? But it was weirdly cute so she wasn’t going to complain.

“A-ahhh! I think it’s starting!” Connie’s hips bucked, harder than when she’d cum earlier. Her cock still wasn’t visible, thanks to her skirt, but it was only a matter of time. Left to her own devices, Connie would outgrow her remaining clothing in short order. But Byrna wasn’t feeling very patient, and she was technically supposed to be expediting this process, so she decided to do exactly that.

Besides, she had a bunch of excess mass that she normally didn’t. Slowly, her testicles shrank – not a lot, not enough to lower her out of reach, but just enough for her purposes. She leaned forward and shut Connie up with a big, deep kiss.

“Mnfff!” Connie let out a muffled moan that quickly devolved into pleasured noises as Byrna’s tongue sunk deep, deep, deep into her. Now that she was distracted, Byrna unleashed a pair of long, thick tentacles from her back that quickly got to work on removing her panties and then occupying her holes. “Mnnnffffffff!”

Connie was warm, unusually so. Beyond the baseline internal warmth, and beyond the boost in body temperature typically associated with arousal. Possibly the result of the transformation? Connie was changing species on a cellular level, so naturally that produced a lot of heat. Byrna had been so intent on perfecting the process until now that she hadn’t really properly observed the process as it happened. That was sloppy on her part, and something she was going to have to rectify. Hopefully Amber and Aster wouldn’t mind being put under full-on lab conditions at some point soon, because Byrna needed that data for her thesis. Ideally a good spread of non-goos and non-buns, too, for a more complete picture. Ugh, now that she thought of it, she’d really been slacking on data-collection. So much for her thesis almost being done.

Well, whatever. She could pick up the slack later. When she wasn’t tentacle-fucking her sister while she transformed into a goo. Connie’s white fur slowly turned green, starting at her mouth and then spreading across her head, down her neck, and from there it slowly enveloped the rest of her body. Her back, her breasts, her ass, her cock, her arms and legs and feet, and then finally her colossal cum-filled belly. The green parts were softer and smoother, and slightly tacky. More solid than Byrna chose to keep herself, but still obviously a slime. Sort of like when Lei first transformed, though not quite the same. Each one of Bunsen’s gooification had been subtly distinct, based on a wide variety of individual factors – Byrna briefly kicked herself again for not being more thorough in her data collection.

But only briefly, because that was around when the rumbling started. Byrna broke the kiss, allowing Connie to let out a low moan. “Wh-what’s happeninggggggg~”

“That would be your digestive system getting converted,” Byrna replied succinctly. “For the audience-”

“Mnnnnahhhhnnnnnnnn~”

“For the audience,” she repeated. “Unlike most animals, slimes don’t have a proper digestive system, per se. Rather, their entire body is essentially one big digestive system, and one that is much more efficient. There are very few things that can even come close to a slime’s ability to absorb nutrients quickly and efficiently. And rabbits, obviously, aren’t one of those things. Essentially, Miss Bunsen’s digestive system was a handicap, but she will no longer have a traditional digestive system as of right about... now.”

The first thing that happened was that Connie turned a noticeably lighter shade of green as all the cum that had been in her stomach was suddenly dispersed throughout her body – including the remaining parts of her, mostly her belly, that hadn’t been goo’d. Slowly, the colour darkened again as her body absorbed the cum and turned that extra mass and protein into more goo. “And that should be it. Congratulations, you’re now a slime.”

“... That’s it?”

“That’s mostly it,” Byrna clarified. “You’re at your final mass, but that mass is all concentrated in one place. Which is, obviously, not natural.” Byrna pulled her tentacles out of Connie, though she didn’t fully retract them. Just in case she felt like she needed them. “Next, your body needs to redistribute all that mass into the proper places.”

“I see! And will I need to do that manually?”

“Not at all. Your new body has different default proportions from your old one, but it does still have a natural equilibrium state. Give it a moment and you’ll start returning to it automatically.”

“Ah, that’s good. I was worried that I was going to have to go around like this until I figured out that shapeshifting trick of yours. That would get in the way of doing my job.”

As though that was the only inconvenience her current state would result in. Byrna decided not to actually say anything, not while they were still being filmed and broadcast live. Assuming anyone was even still watching after the hour-long cumshot. Under normal circumstances that would be a pretty fucking effective audience filter. But this was BNN and the audience was almost entirely horny rabbits so who even fucking knew. Hell, knowing from experience how buns were,  ratings probably went up at that point. “It’ll be kicking in soon, so don’t worry about that. Ah, I hope you’ve got something in mind for the camera, by the way, because you’re definitely going to be far too big to properly film.”

“Don’t worry about it,” Connie replied simply. That was enough to reassure Byrna that things would be fine on that front. This was BNN, they obviously had some tricks up their sleeves when it came to filming sex under even the most extreme conditions.

Any further conversation was cut short by another deep, low rumbling coming from Connie. “Ah, looks like it’s happening.”

“I expected it to feel better,” Connie mused as, slowly but inevitably, her belly began to deflate.

“Like I said, all the growth already happened. This is just redistributing mass.”

“Ah, I see.”

“Things will obviously work very differently for non-slimes, but I’ve already started work on developing countermeasures for that. Digestion boosting spells and such.”

“As expected from a Bunsen!”

Byrna frowned, but decided to not rise to the obvious bait. The audience weren’t idiots, they knew that she was praising herself more than she was praising Byrna. “Of course, if you do want to feel good, I can help with that.”

“I-mnf!”

Whatever Connie was going to say was cut short by a six-inch-thick tentacle shoving its way into her throat. “You’re a lot more attractive when you can’t talk.” That earned her a dirty look, which she honestly probably deserved. Still, this definitely made for better TV, at least in Byrna’s opinion. She grinned as she sprouted several more tentacles, much bigger than they had been earlier, and that grin got wider as they wrapped around her sister’s limbs, immobilizing her completely.

“Okay. Time to have some fun.”

“Mnf.”

“Quit complaining, you enjoy this as much as I do and you know very well that it’s better TV than just watching you grow while you brag.”

“Mnf.”

“Yes, I know I’m breaking kayfabe. Maybe next time give me some damn notification before kicking my door down.”

That was enough sibling bickering. It made about as good TV as Connie bragging. She sprouted several more tentacles and got to work. Two more went into Connie’s mouth, firmly removing her ability to speak for the foreseeable future. She could probably have fit more in, but she only had so much mass to work with. A lot of mass, granted – she had gone a bit overboard with the balls. But it was still a finite amount of mass and Connie had a lot more holes that needed filling than her mouth. “Let’s go for three per hole for now and see how things shake out.”

Sure enough, three more tentacles darted out and easily shoved their way into Connie’s pussy. Probably not that much more than she was used to, given her line of work, but also some of the credit had to go to the fact that she was lot more malleable than she had been a few minutes ago. A fact Byrna drove home by shoving another three tentacles into her dick.

“Mnnnnnnnnhhhhhhhh!!!”

“Don’t cum yet, I’ve still got three more holes to go!” Byrna did not give Connie the chance to consider what Byrna meant by three, immediately going for the butt. That got another loud muffled groan out of her sister, and Byrna took the opportunity to push further. Six more tentacles, three for each tit, right up the nipples, enough to make Connie scream. “Don’t be such a baby. You’re a slime now, remember? Technically you only have to have orifices if you want to. And the ones you do have can basically stretch infinitely without breaking. I could shove twenty tentacles into your dickhole and you wouldn’t even notice.”

“MNNNNNNHHHHHH!!!” Connie moaned in response, clearly intending to say that she obviously would notice.

“Let me start thrusting before you lose it completely.” That got her another, louder moan. Connie flailed, or at least attempted to flail. Mostly it just resulted in her arms and legs twitching a bit in Byrna’s iron grip. “Think of this as practice. You’re a slime, you should be able to break free pretty easily if you want to, you’ve just got to figure out how.”

“Mnnnnnnnnnfffffffff!”

“In the meantime, I’m going to get to fucking~”

True to her word, Byrna began to thrust with an intentionally uneven rhythm. After all, what was the point of having multiple dicks in multiple holes if you were going to give your partner a chance to think straight? Fuck ‘em senseless, that was Byrna’s motto. Or at least it was right now, while fucking Connie, to get her to shut the fuck up for five minutes. That’s how it was with siblings, she supposed – you love them but you also hate them. And yeah, okay, it varied from sibling to sibling. She had a different dynamic with Lei than with Cherry than with Amber than with Connie, etcetera. At least in this particular case, though, the dynamic was exactly in the perfect sweet spot to get hatefucking and standard casual sex at the same time. It was a dynamic that non-rabbits generally just didn’t get to experience, which was frankly their loss.

Connie was pretty fuckin’ tight, for a slime. Probably because she wasn’t quite used to being a slime yet and was reflexively keeping herself more solid. Or maybe she was doing it intentionally to make the fucking feel more intense. Either was possible, and in the end it had the same result – it felt really good to tentacle-fuck her. Byrna grinned and picked up the pace, and also spawned a few more tentacles to squeeze Connie’s tits and stroke her cock. “You’d better hurry up and grow or I’m gonna make you even rounder.”

Really, she didn’t actually have any intention to make Connie rounder. Byrna was more than capable of holding off her orgasm for a good while longer than she had, and worse came to worst she could absolutely just make her tentacles not cocks, even if that was a coward move. But she’d had her fill of turning her sister into a sistorb for one day – the goal now was instead to motivate her to speed up. Actually explaining how to adjust her bodymass would be about as useless as explaining to someone how to breathe. So the best way to teach her was by example. Get her to do it by accident and then from there she could figure out how to do it on purpose. Each Bunsen so far had taken a different amount of time to get a grasp on their slime abilities, but this time she couldn’t afford to let her come to grips with the basics of mass redistribution on her own time because they were on live, international TV. “Come on, slut. Grow for me.”

Connie came, from both ends. Byrna was pretty sure it wasn’t just the result of being ordered to grow, but honestly who could say for sure when it came to Connie. Either way, the more important thing that happened was that her belly schlorped in and the rest of her schlorped right back out. In one fell swoop, both of them outgrew the lab. And the campus. And honestly the neighbourhood. “You should be about four thousand meters. About two and a half miles, if you want to use imperial, but that’s less precise.”

“Jeff cut the feed.”

“I don’t think he can hear you.”

“He can definitely hear me and if he doesn’t cut the feed he’s getting another pay cut.”

“What is it this time.”

“I reiterate; you could have fucking warned me that I was going to be two and a half miles tall, Byrna. Those are borderline dragon numbers, Byrna. I’m going to have to learn compression magic, Byrna.”

“You should have thought of that before you kicked my door down, Connie.”

“I wouldn’t have had to kick your door down if you’d contacted me sooner! Like you should have in the first place.”

“You need to be patient! Did you seriously think that I wasn’t going to transform you eventually?”

“You should have done me first!”

“I did Lei first because I didn’t know I was going to be doing anything! And then I did myself second because of course I did myself second!”

“Then do me third!”

“There is literally no compelling reason to prioritize you over the others.”

“I’m the eldest!”

“We’re a litter, Connie, we’re all the same age.”

“I came out first!”

“You came out fourth, Connie.”

“I’m just saying that this would have gone a lot smoother if you’d taken the fifteen seconds to go into detail about how this all worked before you cumflated me the size of a small town!”

“Maybe you should have called me in advance! And anyway don’t pretend you’re upset about being ‘borderline dragon numbers’.”

“I’m not but it’s the god damn principle of the thing!”

“What principle?”

“The principle of maybe knowing that you were going to be facefucking me for an hour until I’m cumflated to the size of a city block and then going ham on every available hole including ones that aren’t meant to be holes until I grow dragon numbers big farther in advance than as it fucking happens.”

“Don’t try to tell me that you weren’t at least aware of the kind of scale you were gonna be on once you got turned into a slime,” Byrna snapped back. “You know how big Lei is, you know how big I am. If those numbers weren’t literally the reason you were so enthusiastic about this I will eat my entire lab in real life.”

“Ugh. Don’t mention eating.” Connie made a face. “I don’t think I’ve ever been this hungry in my entire life.”

“Yeah, get used to that. It’s not going to be as bad for you because you’re already as big as you’re likely going to get, but it’s still an inherent part of slime biology. Hungry is our baseline state. Especially considering how big you are, you’ve got a lot more you to fuel.”

“See this is why I’m so mad at you. I knew there’d be some kind of real life catch to being two and a half miles that ruins the fantasy. I can only afford so much food in my budget.”

“Should have thought of that sooner. It’s not like I willingly kept it a secret from you, you just skipped past the part where I would have explained the ins and outs of being a slime to you.”

“This isn’t a productive conversation,” Connie said, long after it was already clear that the conversation wasn’t productive and only when it was clear she was out of counterarguments. “I’m starving and it’s your responsibility to deal with that.”

“I could always-”

“And no more fuckin’ cum, okay?” She pinched the bridge of her nose. “Ugh, and we still need to do all the followup shit, too.”

“Followup?”

“Yeah, we can’t just end the interview with me growing. Gotta give the audience a good look at my body, maybe show off some slime tricks. And obviously I’ve gotta top at some point.”

“You don’t really have to-”

“I’ve gotta top at some point.”

“Okay, fine, you’ve gotta top at some point.”

“Probably find a way to work some mass voring into the mix.”

Byrna sighed heavily. “Okay. I can work with this. We can tweak the pocket dimension spell a bit to add in some NPCs, but that’s gonna be a lot more magically taxing.”

“I can help mitigate that?”

“I’ve also got things to do today so we’re going to have to make it quick.”

“You should have thought of that before agreeing to the interview.”

“I am going to throw you out of a window one of these days.”

“Don’t lose your temper on live TV, sis, that’s very unprofessional. Jeff, you ready to get to filming again?”

“Oh my god.”

“Jeff says he’s ready to get filming again.”

“How do you even-”

“I told you, we’ve got contingencies in place for if the reporter ends up macro.”

“Fine, fine, it’s magic.” Byrna sighed. “Just... start the damn camera again.”

“Hey. I’m the reporter, I get to decide when we start filming again.”

“Oh my god.”

“Jeff, count me in.”

Byrna once again could not actually see Blues counting them in. She didn’t really need to, because she was capable of counting. “Welcome back, everyone! I’m still Connie Bunsen, still cumming to you live from Harris University campus with soon-to-be Doctor Byrna Bunsen in the aftermath of getting transformed into a goobun!” She stood up to her full height and took a moment to stretch, in the process showing off her new and improved goobun figure.

“As you can see, the transformation is surprisingly significant! Beyond the change in species, I’ve gotten a lot bigger! About two and a half miles tall, or so I’m told. Big enough that if I were to walk right to the city limits and lie down I’d just about reach the nearest satellite town. My proportions have also changed! Gone is my trademark svelte form, though I think you’ll all agree that it’s not a total loss! I’ve developed significant amounts of muscle. Not quite bodybuilder levels, but I’ve definitely never been this chiselled before. I’m also much, much, much more bottom heavy than before. Asscheeks seem about twice the size of my head? Maybe two and a half? Oh, and of course my dick is much bigger.”

“It’s just the appearance of muscle, of course.”

“Does that make a difference?”

“No. You should be about as physically strong as you look to be, possibly stronger, but your whole body is essentially one solid mass. You don’t actually have any muscles anymore, or any real internal organs.”

“Fascinating stuff! Which is a nice segue. My size and figure aren’t the only changes, I’m also a slime now! Dr. Bunsen, why don’t we go over some of the more subtle changes.”

“Well, once again, your body is one solid mass. No bones, no internal organs, just slime, which means you’re very malleable. Once you get the hang of it you’ll be capable of some pretty significant shapeshifting. As it is, with some outside assistance you can still do... hold on.”

Byrna dropped to her knees and grabbed Connie’s erect shaft, squeezing and groping and shaping it like it was clay – or like it was a balloon animal. “There! Horsecock. I can also do dogs, horses, monkeys, and a hat!”

“Not very impressive for a horsecock, though, is it?”

Ah, there it was. Byrna wondered how Connie was going to segue the interview into mass vore. “Well, I could continue the balloon animal approach and blow it up, but that would be very obviously just air and not extra mass. Instead, I think now is a great time to show off the thing that slimes are most known for.”

Connie turned to face an invisible camera. “For all the folks at home, here’s an important reminder that no innocent civilians were harmed or will be harmed during the production of this segment.”

Byrna snapped her fingers, and just like that the pocket dimension duplicate of the city was populated – more densely than it was in real life. Millions of people swarmed in a vague approximation of panic, like they’d stirred up an anthill. “Goodness! They’re so small!”

“The size difference is so vast that if there weren’t so many of them, you wouldn’t be able to see them. I could make them a bit bigger – there would be fewer of them, but they would be a bit easier to eat. And the amount of mass would stay the same, which is the important thing.”

“I’m still a bit new to all of this, so I’d like you to make it as easy on me as possible.”

“Let’s keep them small for now, then.”

“Really? I’d have thought bigger would be easier.”

“If you want to eat them in the traditional way, yes. But you’re a slime, your entire body is effectively one big mouth. Here, there’s a particularly dense patch over this way, lie down on top of it and then just sort of roll around and rub your body against the masses and you’ll eat them all without having to even try!”

“Oooooh, that sounds fun~” Not quite as good TV as proper vore, of course. But it was, as Byrna had said, a lot easier. And, more importantly, it was a lot quicker, and a lot more satisfying to Connie’s new goo instincts. Byrna could get back on schedule faster, and Connie wouldn’t complain because it felt too good. Byrna stood up, placed her hands on Connie’s breasts, and pushed her down. The green rabbit giggled like a child as her ass slammed into the ground with a literally earth-shattering force. Enough to wipe out a good chunk of the city beyond the immediate blast zone, followed up by another solid tremor when she lay down. “Oh! Oh my!”

Connie’s body quivered and then grew. Not a lot, but noticeably. “Ah, you’re right! This feels really good!”

“Roll around a bit.” Byrna had also programmed the NPCs to just sort of automatically swarm around Connie on their own. That was about all the intelligence they had – yet another good reason not to go with bigger prey, it would be too obvious that they were basically just empty shells shaped vaguely like people. Byrna was a fairly powerful sorceress in her own right, but she wasn’t on the level of the real heavy hitters. Which meant she had to save spell power where she could, especially since the NPCs were also drawing from Connie (and, to a lesser extent, from Blues). Plenty of reason to keep things relatively easy to maintain, which also meant there were a limited number of NPCs to go around. Another good reason to have them automatically swarm to Connie, to prevent herself from accidentally eating too many of them.

Connie did as she was told, rolling over onto her belly and then rubbing her fat bunny tits all over the remains of the city, slowly but surely mopping up more and more and more NPCs – and getting bigger and bigger in the process. Especially her boobs and butt and dick, because of course they were growing faster. Just because Connie hadn’t figured out how to consciously control her shape didn’t mean she couldn’t subconsciously control her shape.

They all did that, to some degree, before they figured out how to do it at will. That was part of why Byrna’s default form was noticeably more liquid and viscous than the others, for instance, or how Cherry’s cock was proportionally the biggest of their litter – though, granted, that was the case even before she got goo’d (and she was very very smug about it).

Either way, Byrna wasn’t going to complain about Connie’s bits getting bigger, although really her butt didn’t exactly need it. She was already very well endowed in that regard, with cheeks a good twice the size of her head and hips to match. Again, not that Byrna was gonna complain. She was a Bunsen, and was thus genetically predisposed to like ‘em big. She grinned, and knelt down behind her sister so she could get a good feel, letting her hand sink deep into soft gooey flesh.

Literally, she realized a bit too late. “Oh. Right. Still need to get used to that. Oh well, there goes any hopes of getting this over with quickly,” she grumbled as she found herself slowly absorbed into Connie. Connie was already in a bit of a feeding frenzy, and hadn’t yet worked out how to control her slime abilities. Add in the fact that Byrna was also a slime and this was basically inevitable. “Ugh, it’s going to take hours to untangle us.”

“Untangle?” Apparently that was enough to shake Connie out of her feeding frenzy, which meant it probably wasn’t much of a feeding frenzy. She rolled back over and sat up, looking around in confusion. “... Dr. Bunsen?”

“You ate me with your ass.”

“Oh. Sorry?”

“No, no, it’s my fault. Besides, this way we get so show off a few more of our slime abilities. Although I’m going to have to ask your permission to take the steering wheel for a bit, since I’m more experienced. Is that going to be a problem?”

“Not at all!” Connie replied, although Byrna could feel that she wasn’t actually all that okay with it.

“Under normal circumstances you would have to do this yourself, but since we’re both slimes-”

“We both have some amount of control?”

“More like I’m more able to make use of your abilities than a normal person would be capable of. It’s entirely within our abilities to hand control over to your prey, but normally prey aren’t capable of doing this.”

“Ah!” Connie gasped as she abruptly sprouted a second set of boobs and arms, both the same shade of blue as Byrna. The blue arms immediately got to work squeezing and groping at their fat leaky quadboobs.

“The first is, as you can see, that when a slime consumes someone they can pull out various traits of their prey as extra body parts. Or you can use their body parts to augment your own, like so.”

“Ahhh!” Connie’s already frankly massive horsecock abruptly grew bigger than she was tall, thick and throbbing, blue and green slime swirling and spiralling around each other in a chaotic maelstrom of sex, accompanied by a set of balls that made Byrna’s earlier waterbeds look practically reasonable.

“There we go! About twice as big and eight times as productive, before taking into account my productivity boosting magic from earlier. We also share sensation which means it’s approximately four times more sensitive, which is why I’d strongly recommend you wait a moment before masturbating.”

“Why is it so biiiiiiiig~” Connie moaned, literally drooling as she stared at her giant meat.

“Ah, that’s because while your new default size is about two point four miles, my uncompressed size is just under five.”

“oh my god”

“Speaking of which, why don’t we undo those pesky compression spells and get really big?”

“oh my goooooooddddddd~” Connie exploded outwards, quickly bowling over most of the city. Their combined mass wasn’t quite enough to outgrow the metro area, but that was fine because Connie clearly wasn’t done eating. “Fuck! Fuck! Fuuuuuck~” she cried, absorbing the debris that she’d created when she grew before quickly setting about making more debris to eat and grow. To say nothing of the NPCs that were still steadily flowing in to her body.

“Oh, yes, one last thing,” Byrna said as she slowly moved her arms from their tits to their cock. “Remember that productivity boosting enchantment I put on myself earlier?”

“Mnnn, yes?”

Byrna didn’t have a face with which to grin at the moment, but the sentiment was there. She grabbed their cock, and they immediately came.

And came.

And came.

“I hope you’ve got at least another hour in this timeslot, because we’re gonna be cumming to you live for a while~”