Actions

Work Header

cat.. slime?

Summary:

veldora’s older sister, velzard, invites her brother and sibling to the palace of ice. unbeknownst to her, rimuru has been having some issues with his human form… and that’s when guy steps in.

Notes:

heyy i'm back. i've been seeing some guyrimu art on twitter recently, apparently there's something going on for that.. anyways, enjoy this thing i wrote in the span of roughly a week. i'm so tired.

i do want to comment that the master/pet tag seems a bit misleading. their sex does give that sort of vibe, but they're still casual outside of it. just letting u guys know <3

(See the end of the work for more notes.)

Chapter 1: he became a fuckinf cat

Chapter Text

rimuru, curious with how many limitations his form has, decided to do some.. live testing on himself. usually the demon lord would use mimics of himself to test out things like this, but he’s a demon lord! surely he’s capable of controlling the way his body looks with no problem..

except he did have a problem with doing just that.

while experimenting in front of the mirror, rimuru adjusted this body of his in plenty of ways. elongating and shortening his ears, making his skin texture different, adjusting hair length.. and then it came to adding more drastic features. since rimuru has seen so many various creatures in and out of the forest, how about he tries to mimic their animalistic features instead of playing around with simple things like elf ears or various body shapes?

it started out mild, giving himself fur, sort of like sufia did in her half-tiger form. that all turned well, he reverted the skin back and continued on.. ‘does this world have cat girls by any chance..’ he thought to himself, and while browsing through his memories in this world, the only images he could find were more on the big cat scale instead of something more domestic like a house cat. rimuru didn’t want to imitate a tigerman or fox like one of those beastmen.. nor did he really want to be something similar to a wolf like the tengu elder, kaede, and her daughter, momiji were. so he’d simply imitate a cat on his own based on his own knowledge.

with enough effort, two cat ears popped out of his head, and he quickly felt a tail form right from where he’d have his spine end.. if he had a spine. when he got the tail out from his pants for inspection, it looked and felt just like a regular cat would, simply a tad larger. same went for the ears he had on top of his head, the one he tried to touch was twitch when he put his own hand near, but they looked legit. both the tail and ears had taken on a blue color, just like all the other features he had tried on himself earlier.

“well, i suppose i can imitate things that aren’t in this world too..” he murmured, but upon trying to change his form back to normal.. his body didn’t respond. this quickly made rimuru panic inside as he looked down at the tail that simply swished on and about, no signs of merging back into him.

‘raphael–’

response: body adjusting has been put on a week-long cooldown due to excessive use. further attempted use will waste magicules and exhaust master.

“shit.” rimuru cursed to himself, stuffing the tail back into his pants and managing to sneakily wrap it around his leg. the ears would be a larger issue though.. ‘does this mean i can’t transform back to slime form?’

answer: no. transformation between forms is possible, adjustments aren’t.

but could he really walk around in slime form all day..? sure, he enjoyed being carried, but the freedom of being able to run and walk and do.. human things.. was rather valuable to rimuru.

suddenly, rimuru’s door was shoved open loudly, the bang making rimuru instinctively turn back into his slime form. but when he looked up, all he saw was a veldora who seemed to be on the verge of.. tears? “veldora! you can’t just barge in like that, what would’ve you done if i was naked??” rimuru asked, transforming back into human form without a second thought. the dragon looked at him a bit puzzled, but decided to simply carry on with his original plans. “velzard, my.. older sister. has invited me to that ice castle or something to, in her words, catch up .” veldora explained, rimuru simply looking at him, awaiting a continuation and possible explanation to why he barged into rimuru’s hut just because of some invitation.

veldora sighed.. loudly and dramatically. “since you’re part of the family i want you to join us for dinner! and keep me safe.. from her.” ah.. there it was.. wait, what?! rimuru looked at veldora, stunned. “family? veldora, i’m a slime, i’m not part of your dragon family business..” he said, but veldora shook his head in disagreement, arms crossed. “me and you share a last name, so we’re siblings! and that makes you also related to my sisters.. have you never thought of that, rimuru?” the dragon asked, clearly disappointed at rimuru’s ignorance of his ties with the dragons, they’ve been related for ages now! but veldora’s disappointed expression changed to one of curiosity when he walked up to rimuru and poked the cat ears that the slime had completely forgotten about.

“and what are these? i didn’t know you had feline blood in you!” he asked, the question and excessive ear touching making rimuru quickly slip out of veldora’s hold and plop down onto the bed. “i don’t have feline blood or anything, i was simply fooling around with my form.” he explained, falling down onto the bed completely and grabbing his ears in frustration. “and now i’m stuck with these! how am i supposed to make public appearances now..” rimuru was clearly upset, and veldora could see that.. but his question hadn’t been answered yet. “wait, so can you come with me to the dinner thing..?” the slime sighed in response, looking at veldora like he was completely done . “do you really think i want to embarrass myself in this.. half cat form?? let alone in the castle that velzard lives in.” he asked, but veldora only shrugged. “i’m sure velzard doesn’t care enough to question you.. the dinner is just a family thing ! nothing formal..” seems like veldora really wanted rimuru at this dinner.. maybe even velzard wanted him there. but rimuru really wasn’t sure if he wanted to go looking like.. this . it wouldn’t be really polite to be in slime form for the entire thing if both velzard and veldora were going to use concealed forms either, so he had to be in human form.

rimuru sighed, his tail swishing back and forth as he try to think up an idea or two. veldora simply stared at the moving tail, maybe a bit too mesmerised by it. the owner of the previously mentioned tail obviously noticed veldora’s eyes following the tail back and forth, but he decided to pay it no mind for now. maybe dragons are like cats or something..

anyways. rimuru didn’t have that many ideas, considering the fact shuna would likely insist on sewing him an entirely new outfit simply to meet his new sister.. which meant shuna would quickly find out of rimuru’s newly acquired feline features. the fact the tail and ears seemed to be more sensitive to touch than the rest of his body made this entire situation just a little bit worse.. and veldora was making it even worse by trying to now actually grab that tail with both his hands. almost like a kitten trying to catch its mother’s tail when it learns to walk and see, but in this scenario veldora was a 2000 year old dragon whining about being unable to satiate his ‘predator instincts’ because rimuru keeps moving his tail away until eventually tucking the thing under himself. “quit playing around, veldora. i’m trying to think!”

veldora only frowned in response, plopping down on the bed next to rimuru. “surely it’s not that big of a deal…” he murmured, earning a glare from rimuru, making veldora panic. “well..! i suppose it is a big deal.. but– it’s not like i can exactly delay the dinner just because of some stupid thing you did. surely you can hide your ears with a hat or something? they’re not that large.” at least he’s trying to help.. rimuru sighed, his cat ears flattened against his head, likely because he was getting annoyed. suddenly, the dragon gasped, pointing at the flattened ears. “look! they’re better blended in with your hair now! can you keep them like that?” he asked, rimuru shrugging in response. “i doubt, it’d probably cause strain on the form or something.. how long is the dinner anyways?”

“oh.. well—” veldora seemed to want to avoid that question, but rimuru obviously wasn’t going to allow him such a luxury. “veldora. how long is that goddamn dinner.” the slime demanded an answer, cat tail wrangling out from beneath him to angrily whip against the bed. veldora looked away as he finally answered. “she insisted i stay for.. a day .” and that wasn’t the answer rimuru expected at all. he’d expected maybe a few hours at best, possibly half a day if she wanted to stretch it out and do whatever she planned with her little brother.. but a whole day? that’s 24 hours of sitting in the ice palace.. with the ice empress.

veldora leaned down to look at rimuru from below, poking the other’s nose. “your stunned expression isn’t helping my panic, rimuru.” he said, unfreezing rimuru with those words alone. the slime sighed, pushing veldora’s hand away. “i’ll.. bring a hat.. or something. can you maybe notify velzard we’ll be there soon?” rimuru’s agreement made veldora almost bounce off the bed from excitement, at last, he had convinced rimuru to join. despite his little issue. “of course! i’m sure she’ll be excited to meet you.”

“wait–” and veldora disappeared. ‘so velzard didn’t even plan on me arriving..?’

-

an hour passed, and rimuru still hasn’t found anything to cover his head with. he’d managed to request shuna for assistance, but she herself didn’t know anything that’d cover his cat ears completely. “lord rimuru, maybe this one?” her voice was full of doubt as nothing was working, even as she tried her best to fulfil her masters request. those ears were simply too stubborn. “haa.. this whole dinner thing was so sudden. at the palace of ice too.. these dragons are such a handful.” rimuru murmured, feeling his ear twitch when ramiris suddenly appeared in the room, the little fairy gasping. “ehh? you’re going to the palace of ice?? do you have business with guy now, too?” she asked, her expression was a mix of confusion and jealousy. well, who wouldn’t feel a bit jealous about a brand new demon lord befriending almost the entirety of octagram in the span of barely 3 years?

“guy? what’s he got to do with this?” rimuru asked, clearly confused on what ramiris had just asked him. the fairy gave him a dramatic sigh, rolling her eyes, that tiny body of hers moving along with the eye roll as she floated in the air. “you know, guy crimson, the guy you met at walpurgis.. lives in the palace of ice with velzard. he keeps all his creepy demons there too!” she finally explained, ramiris thought this was more or less common knowledge.. but perhaps not so much. “so you’re telling me i have a chance to bump into guy when going to that dinner with veldora?? this makes this whole thing even worse than it was before..

ramiris, sensing the dread that radiated off rimuru’s body, decided to teleport away.. possibly to comfort beretta after calling demons creepy.

after a few minutes, veldora returned, looking both happy and a bit scared. but rimuru believed he was the only one to see just how nervous his dragon buddy was. “any luck finding disguises? velzard will be sending some maids to collect us soon.” well, that maid thing sure proved that guy was involved in one way or another.. or maybe velzard also had command over the maids? who knows. “no luck, but i suppose if it’s just the three of us it’s nothing horrible.” the slime sighed, “it’d be more than embarrassing for guy to see me in this state, though. considering.. the kind of person he is.” rimuru felt a shiver run up his spine as he had flashbacks of just how touchy the demon lord was with him over naming.. he really didn’t want to experience that sort of thing again. for now.

“i’m sure everything will be great, rimuru!” it seemed the dragon was more cheerful now, but as he moved to poke the slime’s ears, he was quickly swatted away. rimuru glared at him, “i’m not a cat, veldora.” he murmured, but all he got in response was a laugh. “you sure are acting like one, my dear friend!” rimuru turned away, scooping up his new clothes and headed to his room, alone. “i’ll be changing. alone. thanks for your help, shuna.” the oni princess gave her master a nod, “of course, lord rimuru.”

“rimuru, you can’t just ignore me!”

“yes! i! can!!!”

-

the clothes shuna prepared fit great on rimuru, everything looked appropriate for a visit to an unknown palace ruled by a demon lord and the ice empress herself. there was a special hole for his tail that rimuru decided to utilise, more or less embracing this predicament he had placed himself into. the ears.. well, he can’t exactly cover those. so he kept them out, his ears instinctively flattening when he walked outside due to the slight wind they were experiencing recently in the forest. but the cooler weather was more than welcome right now.

as soon as he left his hut, rimuru was greeted by veldora trying to chat up none other than misery, one of guy’s.. personal maids? she was named, so rimuru had simply guessed. as soon as she saw him, she bowed slightly. “rimuru tempest, lady velzard and lord guy said to thank you for accepting the invitation on such short notice.” the demon said, rimuru giving her a nod. “it was no problem..” the slime eyed the door curiously. “may we go inside now?” he asked as he admired the intricacies on this new door. it was different from the one he went through for walpurgis. it had a more casual aura to it, if that made sense.

the maid in question nodded, the door opening before the two to reveal a similar space as the one that appeared when that walpurgis door was opened. rimuru tried to analyse the magic when he got closer, but to no avail. “c’mon, veldora.” he said, looking back at veldora who gave him a quick nod and walked inside with him. the space was quick to transform, changing their location to the palace of ice within seconds. “lady velzard–”

“misery. we’ll take it from here.”

rimuru knew that voice.

when he looked up, rimuru’s eyes quickly met with crimson eyes, making him gasp. “rimuru, it is truly amazing that you agreed to join veldora on our dinner.” a young-looking lady next to guy said, her hands clasped together. “but as a matter between dragons, surely you understand that for now, we need some.. sibling time.” her warm looking smile clearly had some rather.. vicious intentions behind it. and rimuru, obviously sensing a threat from the girl standing in front of him, quickly agreed to what she had said. “oh, well then.. i’m sure you guys wouldn’t mind me simply leaving then.. haha–” he was quickly interrupted and grabbed by guy, the hand that was on his shoulder looked like it was simply resting there.. but in reality rimuru was being held back with more force than what he could handle. “ you are staying here, as my guest.” well those words sure didn’t sound threatening at all.

“velzard.. you can’t just separate me from rimuru..” veldora was clearly trying to protest and rescue rimuru, but to no avail. neither velzard nor guy were budging. “well, enjoy your time with rimuru. i’ll be taking..” she grabbed veldora’s arm, rather easily overpowering the storm dragon. “this one, with me.”

and thus, veldora and rimuru were separated.

in a flash, guy and rimuru appeared in a room that looked like a simple tea room. it was barely decorated, but it had a pleasant aura to it. or, well, as pleasant as it could get with rimuru being held hostage.

he was immediately seated into a chair, the ice beneath him adjusting to how he sat, similar to a cushion, really. while rimuru was curiously messing with these chair mechanics, guy took a seat across from him, staring for a good while before rain came inside with a tray of tea and various sweets, the food immediately catching rimuru’s attention. “now that you’re done with that.. how about we talk?” guy said, getting a nod from rimuru who reached over for a cookie. “talk about what?” he asked, curious.

“how about those.. feline ears on your head? is demon lord rimuru trying a new appearance to woo the beastmen?” the primordial red was obviously teasing, but rimuru was flustered either way. the red on his face likely enticed guy to tease him further, leaning onto the table that separated them. “oh? am i right? i suppose i can’t exactly stop you from trying to steal carrion’s army..” rimuru was quick to deny the other’s words in a panic. “no, no! no stealing.. or wooing.. here. i had an incident with my human form, that’s all. it’ll be gone soon..” calling it an incident sounded better than simply admitting he was goofing off in front of a mirror, so he decided to call it that. and guy had luckily bought it, believing the slime. “incident? perhaps i can help, but my assistance comes at a price. how about it, rimuru?”

with the way guy phrased it, it sounded like rimuru was about to form a contract with the devil himself. but perhaps rimuru wasn’t too far off, guy was technically the absolute lord of demons so he as well be the devil.

“i can’t just accept something like that, we’re both demon lords, guy, tell me your intentions.” a rather bold move from rimuru, especially when made on someone like guy crimson. but the demon simply chuckled, teleporting behind rimuru’s chair and caressing one of his pointy ears gently. “how about we spend a night together, hand over all of yourself..” his hand slid beneath the other’s chin, taking hold of it. “to me. only for one night of course, and then i simply undo your little issue right after.”

this proposal.. is insane. rimuru had already gotten the hint that guy was into anything that breathes, but to suggest sleeping with him to undo this annoying feature he gave to himself? the slime didn’t even know if it’d actually work, what if raphael blocked out any interventions? but guy is stronger than him so maybe it wouldn’t… but raphael is an ultimate skill, surely it’d work against anything as his biggest trump card.



really? ignoring me at such a crucial time? you’re so useless sometimes…

the ability gave rimuru only a ‘hmph’ in response before seemingly shutting off, now rimuru was alone in this decision. guy looked down at rimuru, waiting for an answer. the demon guessed he was searching through his abilities or something but it’s not like he could really peek into the others mind, the slime had plenty of defence against such simple magic.

“i really don't think you’d be able to unbind this.. it’s a rather complicated system that i myself don’t understand.” rimuru murmured, his head moving slightly to the side, his cat ears slipping out of the other's hands because of the movement. guy sighed in response, getting a bit more handsy as his hand moved to rest on the other’s nape. “you’ll never know unless we try, rimuru. we have plenty of time as well, velzard won’t be done with veldora until sunrise at least.” that totally didn’t scare rimuru.. “if we have that much time, you wouldn’t mind if i take some time to think, would you?” after hearing those words, guy backed off, sitting back down in his chair. “well then, while you think about it, how about we enjoy the pastries?”

rimuru was quick to wordlessly snag that offer, the delicious sweets he consumed blessing his taste buds and also getting analysed automatically by raphael. a dozen recipes storing themselves in his mind to give off to shuna after for recreation. his tail swished in happiness as he munched down on the provided food, unaware that guy was simply staring at him with a smile on his face.

did he really hate the idea of sleeping with one of the most powerful beings in this world? no…  but guy is dangerous, who knows what he’ll do. yet on the other hand.. rimuru would finally lose his virginity. a goal he wasn’t able to achieve in his last life, and still hasn’t achieved in this life. this goal was simply offered to him on a golden platter now! but rimuru is obviously hesitating, considering who offered him this platter.

the slime wasn’t even sure if what guy would try on him would work, he would’ve lost his virginity for what?? experience? rimuru highly doubts guy would teach him anything useful. but if this whole thing did work, rimuru wouldn’t have to suffer with that cooldown.. all of this was frying his brain.

he could feel guys gaze locked on him as he continued to eat, eventually taking a sip of the tea that had already gone cold as it had been abandoned on the table. rimuru wasn’t sure if this gaze was simply to intimidate him.. or guy was simply watching him eat. either way, this put a lot of pressure on the poor demon lord who simply couldn’t make a decision.

as rimuru was thinking over his options, his train of thought was thoroughly interrupted and possibly destroyed by the loud BANG he heard from the outside. he lifted his head and looked out the large window of the room to see veldora in his concealed form, getting chased down by an enraged velzard. with some ability assistance, rimuru could peek closer, and he couldn’t help but chuckle when he saw the sheer panic on veldora’s face as he flew in every direction possible, the never ending snow blizzard not helping his predicament as his older sister chased him down with amazing accuracy. luckily, or unfortunately, the glass of the window was soundproof, so neither rimuru nor guy could hear veldora’s cries and screams for help.

rimuru’s eyes widened when he saw velzard unleash an ice blast, reforming the snowy and icy terrain in the matter of a few seconds, the slime was completely captivated by the sheer power of something that seemed so simple to cast. “she doesn’t exactly have much time to unleash her powers like this, i suppose your dragon friend is just enough for her to play with.” guy commented, turning back to look at rimuru who was quick to follow, looking back at guy when both of the dragon siblings disappeared from his line of sight. “veldora has been keeping his magicules stored inside for quite a while.. maybe that fight will do good for him.” rimuru replied, getting a nod of agreement from guy as he finished his cup of tea.

notice: it is possible to replicate velzard’s ice blast by combining icicle lance and–

yeah okay, can you get that done?

rephael sighed, it’s voice fading out for a moment before.. combined skill formed.

thanks!

well that was lovely, rimuru had a new skill to test out at some point. maybe he could scare veldora with it.. “rimuru, conversing with your ability again?” guys sudden question snapped rimuru out of his head, his entire body jolting as he looked at guy who was casually sitting at the other end of the table. guy smiled when they made eye contact. “don’t tell me you're stealing velzard’s abilities as well.” the demon said, he had caught rimuru so easily. the slime’s face turned a light shade of red from embarrassment, “i didn’t steal it, i only replicated something similar for future use..” he explained, guy chuckling. “i suppose i can’t blame you, it’s not everyday you’d see a dragon rampage like that.” guy was surprisingly understanding, and rimuru couldn’t help but be just a little bit charmed by him. the slime would often get questioned by people like gazel, being forced to explain his motives because in the end, rimuru was a possible threat. but he wasn’t a threat to guy, let alone velzard, so he was easily let off the hook for replicating dangerous abilities and wasn’t forced to explain anything. maybe he did like guy after all..

no.. no. he didn’t.

rimuru could deal with this whole thing on his own, he didn’t need to lose his virginity to get rid of his own mistake.

… but he could lose his virginity to get rid of his mistake.

and that was how rimuru found himself pinned against the wall of the room they were eating pastries and drinking tea in mere seconds ago, guy’s leg right between his legs and a hand on his waist, holding him tight as the other hand held rimuru’s head as the two exchanged a kiss. the only thing rimuru could think of was just how soft the demon’s lips were, the way they slotted so well with his own. that feeling alone got him more drunk than how wasted he’d gotten after that dinner with luminus.

rimuru moaned into the kiss, guy pulled away to stare into the other’s eyes as he wiped saliva off his lips. “you taste amazing.” the demon murmured against rimuru’s ear, the ear twitching in response, making guy chuckle. the sight before him was simply too adorable, and he was about to defile this cuteness in just a few minutes. the mere thought of doing such things made his mind race and excitement increase. he wanted this slime all for himself. guy’s little train of thought was interrupted by an abrupt kiss, rimuru’s arms wrapping around the other’s neck as he jumped up, his legs wrapping around guy’s waist as he made an effort to kiss him.

the kiss was quickly reciprocated, guy changing their position a bit so they could now be on the couch that rested in the corner instead of having rimuru up against an icy wall. rimuru was now properly sat on the man’s lap as they continued to kiss, not having to take a break for air as neither had the need to breathe in the first place. but the sounds rimuru made as guy continued to feel his body up and roll up his clothing, callused hands caressing pale, unblemished flesh so knowingly, so expertly. it’s almost like guy had studied rimuru before they even got to this stage. the demon knew which places to touch and caress, where to dig in his nails, he knew what got rimuru to squirm enough that their erections rubbed together, forming an addicting friction that neither could get enough of. the sensations that rushed through rimuru’s body felt like so much yet so little, and guy knew this as he strummed the slime’s strings with great accuracy.

he could likely get rimuru to come from this alone, but guy wasn’t going to have that. he wanted the newborn demon lord to completely lose it, make him feel things that’d make him want to return to this palace and beg guy for one more time , the demon wished for the other to crave another taste of what he’d experienced as soon as it was over.

finally, after what felt like eternity, guy broke their kiss, three strings of saliva forming into one before it fell between them. “be good for me, alright?” guy caressed rimuru’s ears gently, scratching the base of one a bit. “undress.” this was the first order rimuru got, and he followed it quickly, adjusting himself a bit before he got to undressing. slipping off his coat, shirt, shoes, pants, socks. everything was gone by the time he glanced back up at guy who looked more than impressed when he admired the beauty that was rimuru’s bare body. he gently swung a small bottle of lubricant in his hand for a few moments before he popped the lid off and lubricated a finger, putting the bottle away afterward. “should be enough, right? considering you..” guy pressed a dry finger against rimuru’s hole, his flesh immediately coming in contact with something wet. “can self lubricate.”

rimuru blushed at guy’s comment, looking away. “i learned it’s a side-effect of taking on animalistic features..” he explained in a murmur, guy chuckling in response as he shoved his lubed finger inside. “oh? do slimes not self-lubricate on their own?” he asked, but answered his own question as rimuru had quickly turned to putty when he started to thrust his finger in and out. “i suppose your kind doesn’t usually multiply in such ways.” was all the demon had said before he inserted another finger before rimuru could get completely used to the feeling of being penetrated. he had a lot more to see and feel after all.

guy, more curious than anything, decided to touch rimuru’s.. special features a bit more as he thursted his fingers in and out of the other, quickly deciding on playing with the tail that kept swinging in any and all directions with each and every moan that escaped past rimuru’s lips. the demon caught the tail with his hand, feeling rimuru’s body tense up at the sudden contact before he let out something similar to a mewl when guy pulled it in a gentle manner. the fur was so silky soft that if you didn’t have a firm grip, it’d slip right out of your hands, and luckily guy managed to keep his hold on the thing that kept twitching in his grip. so, now, guy was both stretching rimuru open and he was taking advantage of the other’s tail, pulling it every now and then to get a reaction from his fellow demon lord.

“as much fun as playing with your body is,” he began, letting of the tail and removing his fingers from rimuru, the whine he heard coming from rimuru almost startling guy. he really likes this, huh. “i’ll give you something better, alright? this is my offer, so there are my rules.” those words were said in a slightly more threatening voice, it was quick to intimidate rimuru who seemed to be getting a bit too much out of line with wanting more. this was how he’d keep a solid control over the entire plan after all. “sit up.” with enough effort, rimuru sat up, looking at guy for a moment before he looked away bashfully. “the window’s tinted, right?” he asked out of the blue, the question making guy laugh. “oh, don’t worry, velzard and veldora have been inside for quite a while now.” this made rimuru both sigh with relief and be just a tad bit scared. with both the dragons inside.. his older siblings nonetheless, he risked the idea of getting heard, or even caught. “whatever you’re thinking, do not worry.” guy said, pulling the other into a quick kiss, “the walls are soundproof, and misery is guarding the locked door. i’d never allow them to see you like this, yes?” his words sounded so reassuring, so comforting, and rimuru couldn’t help but believe him. he was promised safety and comfort, and he’d have these inconveniences removed after, it’s a great deal.

perhaps the experience was worth it as well, but rimuru would never admit that.

rimuru gave guy a nod in response, “yes, okay.. i’ll trust you.” he said, gasping when guy lifted him up to reposition a bit, eyes widening when he felt something hot and throbbing press right against his ass. guy let out a stifled laugh, “trust is a strong word, slime.” he said with a smile before he thrusted into rimuru, loving the sight before him. rimuru with his mouth wide open, cat ears flattened right against his head and eyes rolled to the back of his head. his tongue lolled out his mouth as guy started to thrust into him, hands tightly holding rimuru’s hips. such a pathetic yet beautiful sight, the newest member of the feared octagram, rimuru tempest, getting fucked out of his mind by none other than guy crimson while in half-feline form. it was laughable, really, but guy only grinned, leaning in to lick some sweat off the other’s naked body. he licked his lips at the slightly salty taste, leaning back in to mark up rimuru with bites and hickeys that’d be healed as soon as all of this was done.

the marks were useless, but staking a claim, even if it was only for a moment, made guy swell with pride. he could own this one if he wished, yet he restrained himself. it’s all going to come to him eventually after all, being patient was something he’d happily practise for rimuru.

rimuru moaned as guy sucked on his skin, the blooming red and purplish-blue marks making fantastic accents to his appearance. his body twitched, the untouched cock between the two twitching as well. guy glanced at it, flicking it with one of his fingers. the feeling making rimuru scream with what seemed to be pleasure, he couldn’t feel pain after all. “your reactions are so loud, i thought you’d be more modest, rimuru.” the demon murmured, taking the cock into his free hand and starting to fist it along to the pace he had been thrusting at, gradually speeding up a bit to keep rimuru on the edge.

he squeezed rimuru’s dick when he heard the other murmur something along the words of “close, oh god– i’m so close..” guy wanted his little slime to hold out for just a tad longer, the thought of them having a mind numbing orgasm together , at the same time , overtaking guy’s mind. “hold it for a little bit, okay?” guy asked, smiling when he saw rimuru try his best to nod. “there you go, we’re so close.” guy’s words reassured rimuru, kept him present, he couldn’t afford to lose himself while in this castle, at the mercy of guy crimson. so guy talking to a speechless rimuru was more than enough as he fucked into him at a merciless pace and ignored his pleads for that sweet, sweet release. he knew guy would be the type to tease him, to egg him on with touches and sweet words that dripped out of his mouth like honey. guy crimson really was a demon worthy of the demon lord title.

a few moments had passed, and guy had finally let go of rimuru, making the slime gasp from relief but mere seconds after he absolutely screamed as he came. his entire body felt completely numb from the sensation, he could barely feel himself getting filled up let alone sense his surroundings anymore. the sheer impact of that orgasm made rimuru’s senses disappear for a few seconds before he got back to the present, everything still intact, dizzily looking around before his eyes focused on guy who had already pulled out and covered rimuru with a robe he’d likely summoned out of nowhere. “did you–” rimuru couldn’t finish that sentence as he fell into sleep mode.

-

rimuru suddenly sat up with a gasp, looking around the room he’d recognised as the one he and guy.. spent time in earlier. quickly enough, he spotted guy casually sitting at the table, drinking tea with a small smile on his face. “did you sleep well?” he asked, rimuru’s face turning red at the question. “i will.. ignore that question. did you hold up your end of the deal?” the slime asked, getting off the couch the pair had defiled earlier, surprisingly fully clothed. guy finally turned to rimuru, nodding. “obviously. i was able to make that effect disappear when you had that orgasm, your system was defenceless.” the demon explained, grinning when he saw the red on rimuru’s face intensify.

“don’t worry, i didn’t do anything else. we both got what we wanted, didn’t we?” guy asked, getting a nod from rimuru. “we did..” he admitted, taking a seat at the table that guy was at. “where’s veldora? still fighting with velzard?” rimuru asked, and guy took his sweet time in responding. the demon leaned back into his chair, letting out a sigh as he glanced out the window. “i saw them blazing through the skies a few minutes ago, your friend looked rather worn out. i do hope velzard has some pity on him.. we have dinner to eat in an hour.”

“hold on, how long did i sleep?”

“hm? only a few hours. i reckon it may have been 8 in total.”

what .”