He-he-heh. Oh, sweet mother Misery, did I go all out in this one-shot. It goes pretty much from 0 to 100 really quickly.
This particular one-shot contains breast and hips expansion, partial transformation, futanari dick growth, and some rather lewd applications of magic, and a bit of OOC-ness - heavy OOC from Akko, and maybe slight OOC from Sucy.
While I'm not entirely sure if the LWA-verse has anything even remotely close to demons, let alone succubi, I still wanted to follow this idea through to the very end. There's quite a bit of inspiration from Corruption of Champions - an incredibly lewd text game that has so much debauchery going on in it that it's not even funny.
Oh, the memories... *evil smirk*.
So, onward to the fic proper!
Also, I hope the spells I had to make up near the second half of the one-shot are at least remotely fitting. And I'm still not sure if Sucy's just as proficient in magic spells as she is in alchemy. So, if I messed something up, I'm sorry.


If there was one thing Akko still didn't get about Sucy, it was her odd talent at smuggling just about anything over to the Academy.

"I swear, Sucy, at one point, you could probably smuggle in a bottled black hole, and nobody would notice anyway." – Akko remarked at one point, when Sucy demonstrated her one particular ingredient. A vial of pinkish-white creamy fluid, to be specific, with said fluid turning out to be succubus milk, of all things.

"Ingredients that are demonic in their "nature" are rather hard to get, sure. But smuggling them into the academy is much easier than you think it is. A simple minimization spell does wonders in this department." – The pink-haired alchemist remarked, as her brunette girlfriend kept looking at the vial with the odd ingredient that she held. And in the next moment, Sucy turned back towards her alchemy station, and poured an ever-so-tiny bit of succubus milk into her potion.

"Okay, but that still doesn't answer how you got it in the first place…" – Akko responded, sitting up from her bed.

"All it took is a summoning ritual, and some lactation-inducing potion. I'll spare the details." – Sucy remarked, noticing that Akko had a slightly disgusted reaction. And with the way the pink-haired alchemist smirked, it was hard for her girlfriend to discern if she really was serious about how she got the ingredient in the first place.

"So, what would you even need such an obscure ingredient for?" – Akko asked, still a little confused.

"Take a good look at this book over here. Or rather, the page it is open on." – Sucy responded off-handedly. Akko stood up from her bed, walked over to her and looked at the book lying nearby – it was open right on a page with a recipe labeled "Enhancement potion". The stylized sequence of a woman with a rather petite figure getting bigger and bigger breasts and hips with each "frame" gave a very obvious hint as to just what the potion is supposed to enhance.

"Succubus milk is the main ingredient for this potion. However, it has to be used in very small and controlled doses – otherwise, the consumer might get to experience what it feels like to be a blimp." – The alchemist giggled at the last sentence as she opened the vial and just barely tipped it over to pour the ingredient into the potion. Before she could finish, however, Akko asked her: "I'm pretty sure you're not as self-conscious of your body as to warrant using something this dangerous. "

"Of course not, dummy. I'll just go straight to testing it on you, my favorite guinea pig." – Sucy remarked as she turned to face Akko. What neither of them noticed was that Sucy had accidentally tipped the vial a bit too far over to the side, pouring at least a good half of its contents into the potion instead of just a drop…

"Yeah, I kind of could use an extra size or two, I guess." – Akko remarked, shyly scratching the back of her head.

Sucy giggled at this remark and responded: "Oh, I don't really know. If anything, you're already hot enough as it is. But you know how it is – we still have to go through with the testing anyway." – And with that said, Sucy turned back over to look at the potion, which seemed to have been just about ready. After a few more moments, when the bubbling settled down, Sucy filled a small vial and handed it to Akko, saying: "Here you go. A relatively safe dose."

Akko didn't even respond, taking the potion and downing it all in one swig. She coughed a bit from the strangely thick consistence of the liquid, and remarked: "Gosh, feels like I just swallowed a slime monster or something."

"Sorry, can't fix the consistency – you know that it would ruin the effects of the potion if I were to tamper with it any further." – She took out her clipboard, clicked her pen and continued: "Alright, do you feel any tingling in your chest or hips?"

"Well, not much yet, but- Oh, hang on, now there is. A bit of a hot feeling in my crotch… And a tingly feeling in my chest, almost as if my breasts are…Filling up with liquid." – The brunette shot the pink-haired alchemist a suspicious glare: "Are you sure this won't have any particularly bad side effects?"

"Akko, you're asking this to the sole competent alchemist in this academy, excluding Professor Lukic. If there were side effects, I'd tell you immediately." – Sucy remarked in a half-exasperated half-monotone voice. She then looked over Akko's body a bit, and saw that her breasts were, indeed, getting a bit bigger. And so were her hips. – "Alright, seems like the potion's working just fine."

Sure enough, Akko's breasts and hips continued to grow, to the point where her clothes were already getting a little too tight, and it seemed that the brunette was deriving quite a bit of arousal from how it felt – so much that she practically tore her clothes off of herself and began pleasuring herself.

"One of the side effects includes the subject suddenly getting heavily aroused, to the point where it could be best summed up as "too horny to think straight"." – Sucy wrote down.

As for Akko, while she was still busy pleasuring herself and her body continued to change, her breasts and butt have actually gotten bigger than Sucy anticipated – her breasts ended up large enough to fill out a DD-cup bra, while her hips were already getting a bit past the definition of "child-bearing hips".

"Oh, this is new. The size increase is much bigger than it should have been. May need to check if the dose really was too much and if it correlates in any way with the individual's "starting" sizes."

While Akko was still fingering herself, she stopped rather abruptly as she felt some random localized pains.

"Hm? Sudden pains? Where exactly?" – Sucy asked, a slight tone of concern in her voice.

"That side effect is not supposed to happen…" – She thought to herself.

"A-a bit lower down my back. And somewhere near my shoulder blades. Oh, and there's a slight numbing near my forehead…And…Oww!"- Before Akko could process what was going on, a pair of short imp horns grew out of her forehead. On her back, a pair of bat-like wings also sprouted out, and to top it all off, a thin tail with a heart-shaped tip also grew out from above her butt.

"Hang on a second…" – Sucy looked over to the vial of the rare ingredient she had used up on the potion and noticed that at least half of it was missing. – "Damn it. High concentration of succubus milk turned the potion from a body enhancer to an outright succubus extract." – she spoke out as she wrote the latter sentence down in her clipboard. Then the realization hit her like a freight train: "I guess this is what I get for getting distracted during potion-making."

"Yes, I know, I sure am quite a distraction, especially now." – Akko responded, her voice suddenly sounding rather sultry and a bit more mature.

"Uh-oh. " – That was the only thing that Sucy managed to utter just before Akko jumped her and the two barely avoided crashing into Sucy's stash of alchemical ingredients.

"I think we're done with alchemy for today, Sucy. Right now, I think we both know what we need. "– Akko responded, lifting her hand up as she kept Sucy pinned down. A strange purple glow emanated from her hand as Sucy's clothes practically undone themselves.

"Subject seems to gain a strange affinity to magic, to the point of being able to cast spells without requiring a wand or any other kind of magic focusing tool, as well as getting rather efficient in non-verbal magic." – Sucy checked off in her mind. – "However, the subject's intense and constant arousal means that they're probably going to use the aforementioned magic for lewd purposes."

As if to further confirm Sucy's suspicions, Akko had kept her "spellcasting hand" pointed at the pink-haired witch. Suddenly, the alchemist felt an unnatural warmth down in her groin as a slowly building surge of arousal began to hit her.

"No need to resist, darling. Let the lust dominate you. Think of nothing else." – Truly, the newly-turned succubus' had some rather twisted ideas – Sucy soon felt her mind assaulted with some…Rather lewd imagery. Imagery of her eating Akko out as her demonic tail slightly brushed against her nipples every now and then, of Akko rubbing her crotch against hers as their juices mixed together, of her being held down on a leash while she would suck on the demoness' breasts…

"This isn't the real her… Don't let her get to you… Fight her off!" – Sucy just barely managed to push Akko away and stood up, breathing heavily and looking red in the face.

"Oh, my. I forgot just how stubborn you really are, you shark-toothed viper." – The succubus remarked in an echoing voice as she landed on her feet. That's when she spread her wings outward and lunged back at Sucy. Sucy just narrowly managed to avoid the attack, but Akko didn't seem to get faked out that easily, as she stopped and lifted Sucy up with a telekinesis spell, soon tossing her right onto her bed and keeping her pinned down as she walked over to her.

"My, my. You're such a defiant girl, Sucy. I think…" – The half-demoness aimed a spell down at her crotch now. – "A naughty witch like you…" – The realization of the nature of the spell that Akko was casting slowly dawned on Sucy as she saw a rather large appendage growing in place of the turned girl's clit. – "Needs to be punished."

This was probably the only time the normally stoic Sucy's half-lidded eyes pretty much sprung open, and her previously defiant expression shifted to one of worry. Not for herself – if anything, taking an extra large insertion wasn't bothering Sucy the tiniest bit. No, she was worried about the fact that a single mistake in one of her potions led to the creation of this nymphomaniac monster.

The succubus had both her hands on Sucy's chest as she thrust her newly-gained futanari cock into the witch's far-from-eager opening. Despite the fact that her pussy had seriously tightened from her own nervousness, the sheer amount of lubrication fluids she produced did let the succubus' shaft slide down her almost effortlessly.

"It's only fair that violating you might be both your punishment and your reward. A punishment for misbehaving, and a reward for awakening me." – The brunette remarked in that same sultry tone as she began to slowly move in and out of Sucy.

Surely, Sucy could feel herself going almost crazy from all the pleasure she experienced. Maybe it was just the feeling of that large, thick cock sliding in and out of her, maybe it was the spell that still hasn't worn off yet, but one thing was for certain – Sucy was way too aroused to even try and fight back, and she was brought to an orgasm pretty quickly, as her canal tightened even more on the demoness' large "instrument".

"Already? You really are such a slut, Sucy." – Akko remarked, seemingly speeding up even more.

"Please… Akko, I… I know this is not the right time to try to talk some sense into you…" – Wow, Sucy herself had a hard time believing she was desperate enough to try this. But the current situation was already beginning to get out of hand. – "But this isn't the real you! The Akko I know was nice and gentle, not a complete and utter sex maniac! Stop this…I beg of you…"

"Seriously? Don't you know that trying to talk down a rapist just plain never works? But props for trying. Too bad that all your defiance and resolve will just begin slowly burning out as I continue to pound your naughty pussy. " – The demoness punctuated that last sentence with a wicked smile – it seemed that her transformation was going even further, as her teeth seemed a tad sharper than before. And maybe it was just the lighting, but even her skin was getting an ash-gray tone…

Sucy had to do something about this, or else the brunette's transformation would be irreversible… But just before she could recollect her thoughts, she felt Akko thrust into her one last time, releasing a torrent of demonic seed into her awaiting womb. But just one shot wasn't nearly enough – Sucy felt her uterus getting completely filled with cum, to the point of an abdominal bulge.

"Well, wasn't that the best fuck you've ever experienced, darling?" – The demoness remarked as she pulled out from the witch's now loose snatch and as her corrupt seed flowed out of it. – "I'm even feeling extra lenient today, so I guess you can get a bit of a rest." – She quickly undid the spell on herself as she said that, now no longer having anything "extra" between her legs, and walked away over to her bed. – "Now to wait for that nerdy redhead to come back, and…"

Now was the time to act. Sucy had made sure not to cause too much noise as she reached into her bedside cabinet while succubus-Akko wasn't looking. By the time she caught on, however…

"Vincula…Luminis!" – Sucy shouted out, and before the corrupted girl could even react, she was soon knocked down to the ground and bound up by chains made out of light.

"So what? You really think that this can hold me down?" – Akko remarked, attempting to break the chains with her magic. But just the moment the chains disintegrated into nothing…

"Purifico!"

The girl couldn't even comprehend what just happened as a white wave of energy hit her, and some sort of demonic energy began escaping her body instead. The changes that happened to her body began to reverse as well – her horns crumbled into dust, her demon wings and tail evaporated into black smoke, and her chest and hips slowly shrunk down to their usual size. After all the corrupted energy left the girl's body, she fell down on her knees, and subsequently down on the floor, seemingly fainting from the intensity of the spell.

"Wow. And here I thought a purification spell normally meant for cleansing curses wouldn't do a damn thing against a girl-almost-turned-demoness." – Sucy remarked as she stood up from her bed despite the weakness she felt in her legs and the sheer amounts of cum her womb was filled with, and slowly made her way over to her alchemical station.

"I guess even I have my limits. Maybe I'm not yet ready to be tampering with such dangerous ingredients after all." – Sucy remarked as she lifted the half-empty vial of succubus milk off the shelf. After a few moments, she broke out into laughter, and, after calming down, added: "Nah, who am I kidding, I'll go back to experimenting with it on literally the next day. As for now, I have other concerns." – And with that said, the witch walked back over to her unconscious girlfriend, lifted her off the floor and gently placed her down on her own bed. Despite the lack of clothes and the situation that Akko was previously involved in, she still managed to look rather innocent as she quietly slept in her bed. Sucy smiled and remarked: "Heh. What a far cry from what she was moments ago." – She looked out the window and noticed that the sun was setting. Lotte was certainly going to come back quite soon, and the room was a complete mess. Oh well, the usual "We got a bit carried away" excuse should do it. Sucy chanted a quick cleaning spell, getting rid of the rather incriminating stain on her bed and the trail of cum on the floor. After everything seemed to be relatively clean, she sighed and remarked: "That should do it. Now to check if the "Bedroom Brews" book has a morning-after potion recipe. Hopefully the smell of any possible potion fumes might just drown out all the other smells here and Lotte won't have any suspicions.


Later, during the night, while Sucy was lying in her bed, she was writing some new things down in her clipboard, as her observations would make for a fine warning later.

"As later revealed from a bit of reading through the bestiary's "Demons and Evil Spirits" section, Succubi normally breastfeed those they want to convert into more Succubi – or Incubi, in case of men – however, it takes a far bigger dose than one might think to fully convert a person. Or at the very least, the smaller the dose - the slower the process. However, it's usage in controlled and very small doses is relatively safe. But even despite that, the ingredient's probably considered illegal for very good reason – after all, we don't need sex-crazed demons freely roaming in our world."

With that last word, Sucy put the clipboard away and ldecided to go back to sleep. She kind of had to sleep in her bed instead of Akko's so as to not alarm her when the brunette wakes up and recalls the events of that night. However, she gave one last glance at Akko before falling asleep.

"Not to mention that some people are much better as their usual semi-innocent selves anyway."


Somehow, I feel like this is an even bigger clusterfuck than before. Maybe I messed something up in some parts, maybe something else, but there may be some small fixes at random points. Not to mention this chapter already went through an almost full reiteration.
You know the drill from here by now
Darky Out!