A/N: About time I got around to doing Paimon. Even had a particular sort of idea for her back when the game came out, but never got around to doing it. Perhaps I'll write it this Halloween. Fits the season after all, hmhm.

That aside, do enjoy~

Secret Ability

The sun shone over Mondstadt, as it had many days before.

The key difference to those days though was that, in contrast to the many sunny afternoons Aether laid dozing under the warm afternoon sun, today he found himself marching up steep hills and trudging through dense forestry – searching, perhaps in vain, for his quarry. That being a peculiar Slime that had been spotted near the city from time to time, rare in nature with its gold colouration and distinctive stinger-like barb that hung over its head.

Why it was so prized Aether really didn't know. Maybe it could be used as a rare crafting ingredient, maybe it tasted good on toast, really it could be anything – all he knew was that the Adventurer's Guild had put up a hefty bounty for it, and perhaps because of that a fair few Adventurers were already out and about searching for it, eager to gain several bags of Mora for their efforts. Considering he was still somewhat unused to the lay of the lands Aether had teamed up with a hunter from the same guild, correctly assuming the man knew his way about the landscape better than he.

He was. Unfortunately, that skill didn't mean much when their quarry could be literally anywhere.

''Uu~ Paimon is getting tired...''

Aether glanced up at the fairy as she followed behind him, floating about with hands dangling limply. The hunter spared her only a brief glance before apparently brushing her off, apparently having seen far weirder things in his travels than Paimon – something which Paimon wasn't sure whether to be grateful for, or take offence to. Regardless he had no qualms with Paimon's presence, something for which Aether was glad about. Nice to not have to explain his fairy friend to every second stranger he met.

Glancing about the forest Aether scanned half-heartedly; hoping to find a speck of gold amidst the greens. Nothing stood out and the closest he'd come in the last hour was a pack of regular blue Slimes, none of which were buddy-buddy with a distinct gold one. He took a glance at the sky – what of it he could see through the canopy anyway – before looking at the hunter's back, his oversized grey cloak hiding a fairly youthful appearance, apparently having been hunting for a few years now.

Opening his mouth he was about to inquire about the Slime – when the hunter's hand came up.

''Ssh.'' Was all he said, still.

Confused Aether obliged, going still – Paimon landing on his shoulder so she made as little noise as possible. He ignored the feeling of her small hands gripping his hair and strained his hearing, hoping to pick up whatever the hunter was perceiving... and after several long seconds, he did. A wet, squelchy slap as the body of a Slime bounced about. At the hunter's gesture Aether cautiously got down on his hands and knees and crawled with the man up to a nearby shrub, not daring to touch it lest the rustle startle what was on the other side, his hope rising.

And for a change, his hope wasn't misplaced – less than a dozen feet away was their fabled Gold Slime, complete with barb-like stinger and all. It was a strange sight to see after spending so many weeks slaying nothing but blue Slimes; the gold colouration reminding Aether vividly of nectar, the comparison fuelled further by the slimy nature of the creature. The barb that hung above its body stemmed from a curve tail of slime, but the barb itself was made of a harder, almost crystallised slime tapered to a sharp tip.

''That's it.'' The hunter whispered to him, pulling out his bow. ''Follow the plan, I distract and you-''

As if fate itself wanted to throw a wrench in their plans, a flock of birds took off from the trees opposite them – startling the Gold Slime and making it bound towards them, hoping to escape whatever was up in the trees. And in the process it nearly ran into Aether, jiggling to a stop no more than a few feet short,

Aether saw the moment those glowing gold eyes widened, then narrowed. He saw the moment the tail tensed and the body jiggled threateningly.

Didn't mean he was able to escape before that hard slime tail suddenly shot forth with the speed of an arrow, stabbing into his shoulder.

''Agh-!'' Aether cried out in surprise, jerking back.

Which was what the Gold Slime wanted, suddenly leaping past Aether and hurriedly bouncing its way further downhill. The hunter beside him cursed and ushered him to his feet, and with some effort Aether did so – stumbling then running after the hunter as they chased after the fabled Gold Slime. Paimon followed nearby, shouting encouragements, but Aether slowly tuned them out as he focused on running.

Or so he thought. Each step became more lethargic and his legs turned into lead, the change sudden and startling – and then without warning they gave out under him. Barely a hundred feet from their initial spot and he'd fallen in a heap, the grass fresh against his nose but a terrible heat spreading through his body. It was like a fire in heat but more like roots in texture; a deep, creeping sensation through his veins and over his skin, so hot it felt like he'd climbed into an open oven and was slowly being cooked.

''H-Hey!'' Paimon cried out, grabbing him by the scruff of his neck and pulling. ''Don't trip now, we're so close!''

Her cry alerted the hunter who stopped, looking back at Aether then at the retreating Gold Slime – before with a groan of frustration he ran back to Aether, kneeling by his side. A quick shove rolled the blonde boy onto his back, his breathing noticeably heavy and his eyes becoming increasingly unfocused as he stared up at the sky through the canopy.

''W-What's wrong with him?!'' Paimon cried out, pointing an accusing finger at the hunter. ''You didn't feed him anything spoiled did you?!''

The hunter, annoyed, brushed her finger aside. ''I did not, thank you very much. It merely seems the sting of the Gold Slime has already begun to affect him – faster than I've heard it does, but everyone has their own tolerances, I suppose...''

''E-Eh? Wait, is he poisoned?!''

''In a sense of the word, yes.'' The hunter grumbled, taking off his cloak and using it as a pillow to prop up Aether's head. ''Traveler, can you see how many fingers I'm holding up?''

Following his words he held out three fingers to Aether who stared at them for a long second, before eventually mumbling something that sounded like a 'four?' before he closed his eyes with pained groan.

The hunter clicked his tongue. ''Right, well the blurring vision just about confirms it. See, the reason that damn elusive Slime is so sought after is 'cause its gel is an ingredient in a local aphrodisiac; expensive but top quality stuff from what I've heard. And your friend here just got stung and injected with the stuff.''

''Oh.'' Paimon wasn't sure how to feel about that; floating over her trusted companion. ''Is he... going to be okay?''

''...maybe.''

''Eh?! Isn't that the part where you say 'yes, he'll be just fine'!?'' Paimon squawked at the man.

Said man just shook his head. ''In regulated doses it's fine. In its pure, unfiltered state delivered by a sting it might as well be poison. Forcing the victim into a state of arousal is just a side-effect; his heart will eventually stop from the strain and he'll kick the bucket.''

''You can do something right? Right?!'' Paimon frantically asked.

''I don't have anything on me to treat it.'' The man said, dumping his rucksack and all other non-essential items by a tree. ''I'm gonna have to run back to Mondstadt and get a healer. You stay with him – I'll be back as soon as possible!''

''Wait-!'' But the hunter was already running off, wasting no time. She appreciated his haste, even if she'd prefer he'd have better orders for her.

Especially if some monsters came by; she'd be unable to protect him and could at best be a distraction... which in and of itself was a frightening prospect.

Moaning under her though made her look back down at her trusted blond companion. A cold sweat had begun to form on Aether's head and even without laying her hand on him she could tell his temperature was rising fast, his skin flushed and his breathing increasing ragged, daresay jerky. The sight made her squirm and her heart clench, fearful for the person she'd come to trust so very much over the preceding... who knows how long. It may as well have been years from her perspective.

During all that time though she had kept a secret from him, and his companions – a secret ability of hers. Granted it wasn't anything world-changing like having the power to obliterate her foes or even really wield a weapon that well, but in a situation like this it was an embarrassing option to help her friend of his imminent demise. The reminder hardened her resolve and, despite her lingering embarrassment, Paimon closed her eyes and focused.

It took a moment but her body began to glow a bright silver hue not unlike that of a full moon, the glow chasing away any shadows looming under the canopy and the glow only brightening further – her small, fairy-like form a slightly whiter shade amidst the blinding light, growing steadily with the glow and a high-pitched ringing shrill in the ears of anyone unfortunate enough to be nearby – and then with a single, brighter flash, the transformation was complete. The light faded in less than a second and Paimon was left floating above Aether.

Only now she was no longer a small fairy, but just shy of five feet in height. She retained the petite form her fairy form had, arms delicate and skin fair; the afternoon sunshine peeking through the canopy and laying itself over her bare flesh. Slender sides led to slightly wider hips, whilst her chest remained more on the small side, just big enough to grope but no more than that. She kept the halo that her fairy self had, but one thing she didn't keep was her clothes.

The torn remains fluttering around her told of why.

Paimon resisted the urge to cover herself up, face reddening as she imagined someone stumbling upon them. That was one of the main reasons she never used the ability until now; her clothes didn't size up with her, so using it in battle or worse in public was a sure-fire way to be labelled an exhibitionist. That, and beyond her ability to transform Paimon had extremely limited knowledge on how to fight, so using herself as anything other than a distraction was pretty much off the table.

Another moan under her though reminded her of Aether's dangerous condition. Pushing down her embarrassment Paimon floated down onto the grass, the green blades tickling her knees as she knelt before him. With haste she unbuckled his belt and pulled his brown baggy pants down, his underwear too coming off with them and ending up on the grass next to her. Immediately she was greeted by the blond's raging erection; well above-average and only made more swollen by his current condition, so big it made her recoil momentarily, intimidated.

Until she remembered her trusted friend was in dire need to help, and so with a gulp Paimon curled her fingers around his dick. It felt hot to the touch but she squeezed it gently all the same, stroking up to the swollen tip before gliding her palm back down to the base, repeating the motion tentatively. As she got more confident with the motion she put her thumb to work on the tip, rubbing it and relaxing when Aether let out a strained, but less pained moan. She hoped that was a good sign she was doing it right.

Especially since Paimon had never done this before.

'Hopefully this doesn't hurt him more...'

Just as the thought floated through her head she leaned in and licked the tip of his dick, recalling some scenes from a lewd comic she'd caught Amber reading when they visited her – before it was tucked away, that is. Trying her best to replicate the scene she dragged her tongue over the bulbous head of Aether's cock, tracing the slit up before drawing a vague loop around the throbbing tip, shivering when her companion let out a needy moan.

A moan that deepened sharply when Paimon took his dick into her mouth. Even with her size increased to more human proportions his dick still felt large in her mouth, her brow scrunching as she did her best to keep her teeth out of the way and sucked on his tip, rocking her head a little before daring to take a bit more of his cock into her mouth. The needy moan her partner made encouraged her to go deeper, sucking him off as she accepted another inch, then another after that, carefully taking more and more into her mouth.

When a hand landed on the back of her head and shoved her down. The tip of Aether's cock slammed against the back of her throat and went straight down it, instantly making Paimon gag and flail, but Aether's grip on her head was ironclad as he desperately shoved her into his groin, her nose squishing into it before he yanked her back up. She had less than a moment to suck in a breath before she was shoved back down once more, her mouth little more than an onahole for his swollen cock.

''Mmgk- mmph- hngk-!'' A slew of harsh, muffled grunts tumbled from Paimon's stuffed throat, her eyes wide.

Yet she didn't fight his hold, knowing he wasn't in full control of himself and hoping it'd make him feel better. Thus with hands landing on his thighs Paimon let Aether face-fuck her, enduring the urge to gag as his large cock thrust over her tongue and went down her throat, causing it to bulge out each time. Air was a finite resource and she sucked it in greedily between deep-throats, her eyes watering from the effort of taking his dick down her gullet.

Aether's harsh, ragged breaths seemed to grow louder too, and Paimon cried out as he grabbed her hair with his other hand, yanking her down desperately. She endured the rough treatment and kept slobbering over his cock at his unspoken command, her throat spasming as it was forced to accommodate Aether's large cock-

-when he came. Suddenly, abruptly, and powerfully – a torrent of thick semen erupting down her gullet and nearly making Paimon choke had she not quickly begun to gulp it all down. Time itself seemed to lose meaning then as she repeatedly gulped down the blond's seed, his cum hot in her throat as it travelled down to her stomach, her head becoming increasingly light.

Just as she started to feel faint the grip on her hair slackened and Paimon gladly jerked her head back, sucking in a much-needed gulp of air and narrowly avoiding choking on her own spit; gulping it down with a grunt and groaning heavily. It took her a solid few moments to get her breathing under control and when she did she raised her head, hoping to find Aether back to normal... but alas, he was still laid on his back, albeit groaning less often and seeming at least a little less pained.

A little, but not completely.

Wiping her mouth dry of spit Paimon climbed onto his lap, the act made much easier with her human-sized form as she mounted him. His cock sprung up against her nether regions and she shuddered, not having touched herself since the last since she transformed – which was easily a long while before she first met Aether. Just having his swollen cock press up against her sex made her whimper and press down on it, pinning his cock to his groin as she rocked her hips, unintentionally teasing the blond as she got herself off.

Until another, more needy moan escaped Aether and she lifted herself up, one hand reaching down to help guide his cock up to her entrance. She felt the tip push and nudge, felt his tip slip in as she angled it right, felt a tingling excitement as she lowered herself down – and with a budding, whimpering moan Paimon slowly sunk down into Aether's cock. He gasped sharply, clutching at the grass and pulling handfuls of it out but she didn't stop; rocking her hips and steadily easing herself down deeper, feeling his swollen cock throb potently inside of her, her tight hole a snug fit for him.

''Nn- ahh~'' Paimon mewled out as she finally came to a stop, knees on the grass and most of his dick inside of her. ''Hah... haah... the things Paimon does for you, idiot...''

Aether didn't seem to really register her words but Paimon didn't care; brushing her white hair from her face before leaning forwards, both palms on his chest – and with a moan she began to ride him. She took it slow lest it hurt but with every rise-and-fall the only thing she felt was a tingling satisfaction that crept through her veins, a whine of pleasure rolling off of her tongue as she got used to the foreign fullness, encouraging her to work her hips more.

The slow smack of her thighs against his hips built as she picked up the pace, her loins enveloping his swollen member more and more until she was down to the base, his tip practically pushing up against her cervix. The feeling of being so utterly stuffed was a new one for Paimon and left her on cloud nine, a heavy moan rolling off of her tongue as she earnestly lifted her ass and jammed herself back down, impaling herself on his dick enthusiastically, her narrow pussy clamping around his shaft.

''Nn! Hn! A-Aeth- err~'' Unable to even form a word Paimon kept bouncing on his dick, the smack of their flesh echoing through the forest.

In the back of her mind some part of her was still mortified with embarrassment that she was doing this, that the one time she revealed this form was just to fuck her friend, but the urgency of the situation quelled her embarrassment somewhat. Pleasure helped cleanse her mind too; a moan falling from her lips as she leaned back and rolled her hips back-and-forth, stirring her partner's dick around her insides before she went back to bouncing, feeling him twitch and throb within her.

The thought just made her ride him faster, desiring to cum too. Some part of her rationalised that she was doing this for his benefit but she couldn't deny the need in her own body; the pleasure scratching all the right places to make her mind turn to putty, especially after months if not years of not even touching herself. With a whine of effort Paimon reached down and furiously rubbed at her clit, gasping as white-hot jolts shot up her groin, her muscles tensing and her breath halting in her throat.

Until she came. ''I-Iyaaa~!''

Not a second later she felt Aether tense, and then a torrent of sticky, molten heat poured into her womb. Stars exploded behind Paimon's eyes and the fairy-turned-human moaned dumbly, jaw hanging low and eyes unfocused even as her hips buckled and jerked; accepting the thick helping of semen that overfilled her pussy and drooled out around Aether's cock, steadily trickling down his shaft and pooling around his groin as she was creampied.

Only when the intense rushed faded from her mind did Paimon come back to her senses; moaning deliriously with pleasure. That was until she felt shifting beneath her, and renewed warmth coloured her pale cheeks as Aether sat up. His eyes were still fogged over with lust but there was a hint of coherency in them now – perhaps a sign that the 'poison' was wearing off?

Any such thoughts, however, were put aside as Paimon suddenly felt her sides be grabbed.

''Eh...? Aether, are yo- eeyah!''

A girlish squeal fled Paimon's lips as she was unceremoniously pushed back onto the grass, Aether looming over her with eyes shadowed by his hair, but the grip he had on her waist made his intentions all too clear. Stammering in embarrassment Paimon did utterly nothing to resist as Aether shifted on top of her more, his hands catching her wrists and pinning them to the crisp green grass, his cock stirring about her sensitive insides.

And without further warning he resumed fucking her. Having him be on top was a wholly new experience and stars exploded in Paimon's mind as she felt her companion's sizeable cock plunge into her tight, sensitive hole, scraping her walls as he roughly jammed himself in-and-out of her without any sign of relenting. The squelchy smack of the insertion rung clear in her ears even as senseless pleasure overtook every facet of her mind, her loins aflame in the best way possible as she was well and truly fucked.

''A-Ah~! Aether~!'' Paimon wailed-

-when he closed the distance and kissed her. The mere act made her breath hitch and her thoughts grind to a halt – only to melt away in the next instant as he continued ruthlessly jamming his cock into her tight pussy, the pleasure a roiling wave through her body and coaxing a moan from her throat. Without hesitation though she kissed him back, lips mashing with his eagerly and her legs wrapping around his hips, pulling him into her desperately, eager to be his outlet.

The moment he released her wrists her hands went around his nape, her slim fingers brushing over his braid before weaving into his blond locks, tugging a little before pulling him deeper into the kiss. Her higher-pitched whines contrasted his huskier grunts and groans, their voices mixing together in a lewd little symphony as he stuffed her sopping hole with his cock, every seizing clench of her insides making him throb so much it felt like he'd explode inside of her at any moment.

So it was a bit of a surprise when he pulled out. Paimon didn't get more than a few seconds to relish the sudden break before she was flipped over onto her front, her cheek against the grass and her small peachy ass raised up – and she squealed as Aether's sizeable dick plunged between her petals once more, hilting within her as he immediately went back to pounding her raw, only now with her bent down. The position if anything just made it easier for him to go balls-deep in her, the harsh smack of his groin against her ass cheeks echoing out alongside Paimon's sharp, pleasure-filled cries, her voice cracking with the pitches it reached as she was fucked raw.

''A-Aether~!'' Paimon wailed as he clapped her ass hard and fast, feeling his shaft fill her up with every hard, cervix-battering thrust.

And she loved every second of it. Even with how roughly he pounded her all Paimon felt was unfathomable pleasure, wailing in delight as the taller blond rutted into her, his breathing harsh and ragged against her nape and his nose brushing against her hair, inhaling her scent. Dimly Paimon wondered if he even recognised who she was but threw aside the thought as quickly as it had come, gladly losing herself to the tingling warmth shooting through every nerve of her body.

A tingling warmth that rapidly built into something so much more intense, her muscles locking up and a cry bundling in her throat – and finally escaped in the form of a shrill wail as she orgasmed for the second time that afternoon, a sharp jerk shooting through her body as she climaxed on Aether's cock. Not a second later she felt a familiar torrent of hot seed erupt within her, gushing across her insides and dousing her depths with his warmth, pushing her onto cloud nine with ease.

''A-Ahh...'' Paimon drooled with bliss, staring into space. ''Feelsh sho good...''

As if in direct response Aether flipped her onto her side, and Paimon cried out in delight as he went back to fucking her once more.

It would be a full thirty minutes later before they finished, and five minutes after that before the hunter returned with a doctor – only to find that Aether was mysteriously healed of his affliction, both parties brushing it off as his willpower helping with it.

Paimon, lacking her clothes, kept out of sight until they got back to Mondstadt – now returned to her fairy form.

...until Aether needed – or wanted – her aid again, that is.

[END]