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cryptidtyping · 1 year ago

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Daddy's Kitten

Diavolo x afab!reader | 3.9k words

18+ only! Minors do NOT interact!

Written as part of @mikage-rehoe 's "Yes, Daddy" collab. Check out the other entries here!

Summary: Diavolo asks you to come to the castle to help him with something. What could it be, you wonder?

No gendered pronouns or terms are used for reader, and little to no descriptions of their body (beyond the genitals, lol). Also, Y/N is not used, Reader's name is indicated by ____. This is my first time writing smut, so please tell me what you think!

Tags/Warnings: Daddy kink, light pet play, established relationship, collaring, dom/sub dynamics, multiple rounds, vaginal fingering, unprotected sex, vaginal sex, reader gets called kitten/kitty, non-consensual voyeurism, color informed consent (Dia checks in on Reader a few times), hints of aftercare, jealous lucifer, lucifer gets no bitches, two people in love fucking sloppy-style

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I require your help, darling. Please come to the castle at your earliest convenience.

It was the weekend, so you were just lounging in your room as you scrolled on devilgram. Upon seeing your boyfriends’ text, you knew there were only a few occasions he’d require your help for-

1) He was overwhelmed with paperwork.

2) He was horny.

3) He missed you.

4) All the above

Replying that you’d be on your way soon, you roll out of bed and slip into some lacy lingerie that Diavolo had bought you recently. Overtop was a cute red dress that fell just above your knees, and a dab of perfume (both also bought courtesy of your lover). Deeming yourself ready, you grab your bag and head out the door.

“____?” Called a voice that made you grimace, not that he could see it. “You look… nice. Are you heading somewhere?”

Smoothing your expression before turning around, you reply neutrally. “Yes. Dia has invited me over.”

“I see.” Lucifer’s voice is a bit clipped at your response. The two of you had had a series of arguments over the last several weeks, ranging from ‘sub-par’ grades (you’d slipped from the number 6 spot in class to number 10 after the teachers decided to start grading you more harshly. Still, that was 10th place out of hundreds of students!) to how you referred to Diavolo ‘too informally’.

The same Diavolo who you were dating. What, you couldn’t give your own damn boyfriend pet names?

Lucifer had yet to apologize or explain what had crawled up his ass and died, and you were frankly tired of the shitty attitude he’d adopted after your relationship with the Prince became publicly official. (You and Diavolo had been seeing each other privately for a few months before being comfortable about being public with your relationship.)

As the silence between you and Lucifer stretched on, you sighed in frustration. “Did you need something, Lucifer, or can I go meet my boyfriend?”

The dark-haired demon furrowed his brows in annoyance, growling out “No.”

“Excellent. I will be home either tonight or tomorrow, I’ll text the group chat once I know for sure.” Just as you opened the door, Lucifer called to you again.

“Would you-“ there was something in ruby eyes that you didn’t want to give a name to. He coughs into a gloved fist. “I mean, may I escort you to the castle?”

An olive branch.

Again.

How many had Lucifer given out, only to nitpick and neg you later? The man was exhausting, and not in a fun way.

“No,” you snip coldly, unable to stop your glare. Without giving him the chance to respond, you slam the door shut.

In the empty entrance hall, the Avatar of Pride gave a gusty sigh as he dragged a hand down his face. What was he supposed to do?

“Hello, my dear,” Diavolo greets you once you enter his office, rising to give you a kiss and run his large hands down your torso. Barbatos quietly closed the door, promising to return with some tea and cookies. “You look lovely.”

You lean into his warm embrace, kissing him again. “Thank you, Dia. What do you need help with?”

Golden eyes get darker, a smirk playing about handsome features. “Now, now, kitten, that’s not my name.”

A spark of excitement bloomed in your core, lust beginning to course through you. “I’m sorry, daddy,” you purr, running a hand through his auburn locks. “What can I do for you?”

“Good pet,” he murmurs, leaning down to press a kiss below your ear, causing you to shiver. Thick fingers fiddle with the hem of your dress. “For now, I just require your company while I finish up some paperwork.”

“Yes, daddy,” you press a kiss to his neck in return, delighting in the shiver it caused. Diavolo gives a playful swat to your ass, making you gasp, before he sits back down behind his desk. At his feet was a familiar plush red velvet pillow with gold tassels. Without hesitation, you slip off your shoes, place them neatly out of the way, and kneel beside him, knees cushioned by the undoubtedly expensive ‘cat bed’.

You send a quick message to the HoL group chat that you were with Diavolo and would see them tomorrow. Then you turn your DDD off and tuck it back into your bag, excited to spend the night with the prince, uninterrupted by the needy brothers.

A few quiet minutes pass by, with you resting your head on Diavolos’ knee and his hand petting your hair, the scratch of his pen filling the air. Barbatos comes and goes with a tea service, barely sparing your kneeling form a glance. After a moment, the prince speaks again. “I have a gift for you, pet.”

You look up at him with big eyes, head floaty- kneeling at your lovers feet so obediently always got you quickly into sub-space. “Thank you, daddy.” You murmur, rubbing your cheek on his knee in affection. “You’re always spoiling me.”

Diavolos answering chuckle is warm and husky, and you squirm a bit on your pillow as it sent heat to your core. You could feel slick seeping into your lace panties as you got more and more excited.

“You’re so easy to spoil, my love,” he coos, patting his lap and pulling out a box. Following his wordless command, you crawl into his lap, facing him. What’s revealed to be inside the box makes you gasp.

“Oh, my!” Inside was a fine red leather collar, the inside padded with plush black velvet. The leather was studded with rubies and diamonds, with gold hardware and a large golden bell. Attached was a metal nametag, one side engraved with Daddy’s Kitten, the other containing Diavolos’ contact information. You wiggled in excitement, lightly grinding against your lover. “It’s beautiful!”

Diavolo pulls you into another kiss, deeper than the previous ones. It was full of heat and hunger, one of his large, tan hands encasing the back of your head while the other guided your hips to grind against his bulge. You moan into his mouth, looping your arms around his thick neck. A whine escapes you, unbidden, when he pulls away.

Chuckling, he wiped a bit of spit off your lower lip. “My pretty kitty deserves a pretty collar, don’t they? Stand up and turn around for me, darling, let me see how it looks on you.”

“Yes, daddy,” you obey, slipping off his lap and turning, your skirt swishing teasingly about your thighs. Diavolos’ hands are careful as he slips the leather around your neck and secures it.

“How does it feel?” He murmurs in your ear, flicking the bell so it jingles merrily. “Too tight, too loose?”

“Don’t know,” you reply coyly, glancing seductively over your shoulder. “Could you give it a few tugs, please?”

A groan rumbles through the prince’s broad chest. “Always so polite for me, hmm?” One of his fingers slips through the metal loop, giving a few pulls of varying strength, making your knees weak. “So, darling, how is it?”

“It’s perfect.” Your voice is breathless, but you are unable to catch your breath as you are suddenly bent over his desk with your dress flipped up to show your ass.

Another appreciative groan leaves your lover as he takes in the red and gold lingerie he had bought you last week, smacking an ass cheek to watch the skin jiggle. He leans over your back, grinding his clothed erection against your soaked panties. “You’re perfect. Always so fucking pretty and perfect for daddy.”

You moan as he slaps your ass again, pushing your hips back against him. “Ngh, daddy, please!”

“Please what, kitten? What do you need?”

“Need you inside me, please daddy please-“

Diavolo tuts in faux disappointment. Your logical mind, which was quickly fleeing, knew he wasn’t being serious, but your sub-space addled brain hated disappointing your daddy. “But I still need to finish my work, can kitten be patient?” All the while, he still slowly ground against you.

“Yes, yes, I can wait,” you pant, still bouncing your ass back on his cock even as you promised patience. “Anything for daddy.”

“Such a good kitty,” Diavolo coos. “What’s your color?”

“Green.” You respond immediately.

Diavolo whispers you more praises as he settles you back on his lap. “Stay still, okay? Don’t distract daddy while he finishes up and he’ll get you a pretty new leash to match your collar.” Little did you know he already had the matching leash, stashed in the drawer of his bedside table. He was hoping to use it later tonight.

“Yes, daddy, thank you!” You exclaim happily, pressing close to his chest. A warm hand rubs up and down your back, your prince working to finish quickly so he could play with you all night- or as long as you could last.

Diavolo could feel your pussy lips throbbing on his dick through the fabric of his trousers, slowly driving him insane. That, accompanied by your sweet smell and how eagerly you wore the low-necked dress he got you, how sweetly you called his title, how easily you followed his commands- it was a miracle he managed to finish his work tonight. (Or ever, with you around.)

Thankfully, the prince possessed an iron will (that always turned into something softer with you).

He doesn’t bother filing away the completed papers, just pushing them to the side of his desk space to place you in the middle like a beloved prize. He looked at you then, with your cheeks flushed and eyes dark with want, hair mussed up and the low neckline of your dress giving a teasing glimpse of your chest.

You were regarding him much the same way, seeing his eyes shadowed with lust and cheeks tinted pink with excitement, broad chest heaving in his dress shirt as he looked at you. Your eyes travel down his body to the prominent bulge straining against his zipper. Looking back at his eyes, you open your mouth to start begging. You needed his touch on your skin, needed his lips on your mouth, needed his thick cock stuffed in your wet cunt and you needed him now. “Daddy, please- “

Diavolo surges forward, capturing you in a fierce kiss and making you moan. Your arms and legs are around him in an instant, pulling him impossibly closer. One of his hands slips into your panties, coating his fingers in your slick before inserting two into your entrance, immediately finding and rubbing your g-spot.

You pull from the kiss with a “Fuuuuuuck~”, exposing the column of your neck as you toss your head back, sending your collar jingling. The demon prince immediately begins sucking and biting his way down, hickeys blooming in his wake. Between each one, he moans praises and questions against your skin.

“Such a good kitten for me, always wearing what daddy buys. Do you like being pampered? Do you like everyone knowing who owns you?”

“Yes!” You squeal as he adds another finger to your pussy and thumbs at your clit in messy circles, bucking your hips into his hand. Wet squelching begins to fill the office as you drip onto the expensive desk. “Love when daddy buys me pretty clothes, love when others know they can never have daddy, love being owned by daddy, love being good for daddy-“

Your first orgasm crashes over you suddenly, pulsing through you in waves as you wail. The fingers inside you slow down, but don’t stop, making you squirm.

“So good, so pretty,” Diavolo pants, golden eyes flickering between the way your cunt sucked his fingers in and the blissed-out expression on your face. “Color, kitten? Want to keep going?”

“Greengreen green,” you chant desperately. “Daddy, please, ‘m so wet, need your cock, please gimme your cock, please-“

Tan lips on yours interrupt your begging as the fingers are pulled out of you and leave you feeling empty. You clutch Diavolos black shirt with shaking fingers, pulling at the fabric insistently. You wanted, needed more of him, as much of him as he could give.

“You sound so good begging daddy,” he murmurs against your lips. “I’d give you the three realms on a platter if it’d make you smile, my love. Now strip out of that dress, okay?”

You do so with haste, pulling it off and casting it aside. Your lover matches your speed in shucking off his own clothes, his impressive cock bobbing proudly between his legs as beads of precum dribble down the shaft.

Laying back on the desk, you bring your knees to your shoulders and spread your legs. The thin strap of lace that covered you was shiny with slick, the matching bralette doing little to hide your pebbled nipples. “How’s this, daddy?”

“Fuck,” Diavolo swears, wanting to capture this image and hang it in his throne room, if only to show others what they could never have. Large hands push your thighs further apart. His cock jumps in interest. “I’m gonna fuck this sweet cunt raw-“

“Please,” you whine, pouting up at him with kiss-swollen lips.

“For you, anything.” Your panties are slipped to the side as he rubs his member between your lower lips, collecting your juices before the fat head slipped into your entrance.

His moan rumbled through you as he slid all the way to the base in one go. It took you only seconds to adjust to the pleasurable stretch, which is fortunate as that’s all you were given. Diavolo fucked you as though it were both the first and last time he’d ever be able to, reaching deep inside you with every fast, rough thrust.

You loved it. You loved him.

“Love you, love you, love you,” you babble, drunk on his cock, fingers clawing at his shoulders in bliss.

“Yeah?” He placed your legs over his shoulders, reaching deeper into you. His voice was gravelly and deep as he praised how well you took his cock, how wet your pussy was, how much your scratches stung, how loud you moaned his title and your adoration. His fingers quickly find your clit again, rubbing it in tight circles. “Want me t’cum in your pussy? Want me t’cum nice and deep inside?”

“Yesyesyes,” you wail as the knot in your belly gets tighter and tighter. “Cum in me, cum with me-“

The knot snapped for you both, your heels beating pitifully against his muscles back as Diavolo spilled inside. You arch fruitlessly beneath him, moving your hips against his as much as you could to tide out your orgasm. He leans down to kiss your panting mouth, trailing kisses down your neck and allowing your legs to go relax down against the desk. For a few moments, the two of you lay there in the glory of sweaty bodies and euphoria, the air filled only with panting breaths and kisses and the faint jingling of your bell.

Diavolo waits patiently for you to either give the go ahead, or ask to stop- if you took too long, he’d ask your color again. In the meanwhile, he was content to nip at your skin and trace his hands over your chest.

You break the silence after you’ve caught your breath.

“… Again.” You look at your lover, your prince, your Diavolo with bright eyes and a flushed complexion. Sitting up, you caress his sharp jaw and trail kisses up it, before biting just below his ear. “Please, daddy.” You whisper as he shudders and groans above you, cock perking up inside you with interest. “Please daddy, I can’t get enough of you.”

“You’re perfect,” he repeats against your neck, breathless. Slowly drawing back from you, he pulls out and watches with lust-blown pupils as his seed dropped out of your cunt, making you whine at the loss. “None of that now, kitten. Bend over for me.”

The look on your face could only be described as lovesick, body moving on its own to obey. “Yes, daddy.”

Lucifer looked again through his files for the data sheet showing the current budget, needing it to approve or reject various club proposals for equipment or field trips. Unfortunately, all his rifling and ruffling was for naught, and the paper remained unfound. Sighing, he leans back in his leather chair and contemplated whether or not he should go to the castle tonight to retrieve the paper that was undoubtedly hidden somewhere in Diavolo’s office.

On one hand, these proposals were the last thing he needed to get done, then he could spend tomorrow listening to his records, or playing piano, or perhaps catching up on some sleep. On the other hand, he had no desire to see you and the prince… canoodling.

Neither you nor Diavolo were shy about public affection, with you unbearably happy to cling to Diavolo’s arm or hand or press a kiss or two to each other’s skin, laughing together about in-jokes. Lucifer hated it, hated that he waited too long in-

Never mind.

He deserved a day off tomorrow. He was getting that data sheet.

You were absolutely dizzy with pleasure, face pressed against lacquered mahogany as Diavolo pounded into you. A myriad of moans and whines left your mouth, accompanied by the squelching of his cock in your fucked-out pussy. Your nth orgasm ripped through you, strangled moan muffled by the wood. Diavolo groaned behind you, eyes focused on how your little hole kept swallowing him, how your ass jiggled with each thrust.

“Fuckin’ love this ass,” he growls, punctuating his words with a slap to your rear. “Fuckin’ love this pussy, always takin’ me so-“ SLAP “-fuckin’-“ SLAP “-well. Can you cum for me one more time? What’s-“

“Green!” you manage to gasp out, answering his next question before he could fully voice it. Pleasured tears dripped from your eyes, pooling and mixing with the sweat and drool beneath your face. You jolt when another smack lands on your ass again, Diavolo slowly grinding his hard dick against your warm, wet walls. “Wanna be good for daddy, want him to fill me up! ~”

The world spins as you’re man-handled into a new position. Spread wide open on his lap as he sat back in his chair, back to his chest with his hands leaving bruises on your hips. “You’re so good for me,” Diavolo rumbles in your ear, forcing your hips to move in slow circles on his cock. “Are you ready, my love?”

You’re thankful for the small reprieve he gives you before you nod your head, whispering “please, please, please” as he hooks your knees over muscular forearms, wraps large hands around your waist, and bounces you.

“Fu-u-u-uck,” you moan in staccato, winding your arms around his neck and leaning further into him. The new position made Diavolo’s cock feel even bigger, and the way he had you spread out felt so lewd, as though he were showing you off to someone. The thought had you gushing around him. “Don’t stop, don’t stop, please-“

Your babbling was music to Diavolo’s ears as he fucked up into you each time he brought you down. One hand finds your clit yet again, rubbing tight circles on the aching bud. “Who owns this fucking pussy?” He growls, the vibrations from his chest felt throughout your smaller frame. “Who owns you?”

“You do!” you cry, knot again forming quickly in your stomach. Something felt different than the previous ones, though you couldn’t quite get your fucked-out mind to figure out why.

“And who am I, kitten?” he asks, thrusts getting sloppy as he too got close to release, eyes sparing a glance at the cracked door.

“Daddy! My daddy!” your voice cracks and warps around the pleasure, your hips doing their best to fuck down onto the sinful cock inside you. “I’m yours, I’m yours-!”

“Good kitten, good fucking kitten,” he circles his digits faster over your clit. The prince loved the way your eyes crosses, your tongue lolling out of your mouth, your body holding onto him like a vice, how your nails bit into the skin at the nape of his neck. “I love you.”

“I love you, too,” you breath hotly into his ear, looking up at him in hazy adoration. “I’m gonna cum, fuck, I’m gonna-“

“Cum for me,” Diavolo commands lowly, briefly nipping at your neck. With just a few more circles of his fingers, you climax with a wail of his title. Your cum sprays out of you, covering his desk and going everywhere as the prince chases his own release. With a low bellow, he slams you down on his cock as it throbs and releases his thick cum inside it.

The smell of sex hung heavy in the air, both of you catching your breath. Diavolo murmured praises in your ear, massaging your sides and waiting for you to come back to the world. “How do you feel, darling?” He whispers. “Do you need a break?”

You nod wordlessly, taking a moment to find your words. “I’d like something to eat, please,” you say quietly, nosing at the junction between his jaw and neck. “And a massage?”

“Anything for you,” he responds, pressing a (hilariously) chaste kiss to your forehead. He stands, holding you bridal style, and walks over to the door adjoining his office to his personal chambers. “Let me lie you down and have Barbatos drop off dinner, okay?”

“Mmhmm,” you hum, pressing a less-than-chaste kiss to his shoulder. “We should watch a movie, too.”

“Of course,” Diavolo grins down at you, placing you on cool silk sheets. “Just a moment, alright, my love?” After another agreeing hum from you, he walks back into his office, closes the doors, and sits back at his desk.

“You needed something, Lucifer?”

Lucifer felt humiliated at having been discovered peeping, but it wasn’t his fault he caught you and Diavolo having sex! (Even though the dark-haired demon is the one who decided it would be a good idea to crash your date, and even though he decided to stand and watch like a filthy pervert instead of leave.) Still, he walked into the office with his head held high and resolutely ignored the erection straining at his zipper, as well as the fact the prince was naked without a care in the world. “I require the budget data sheet.”

Diavolo laughs jovially, searching through the splattered papers that remained on his desk. “Of course, of course. Sorry about that, old friend,” he smiles, but there was something unpleasant about the expression. The auburn-haired demon holds out the sheet in question and narrows his eyes. “Did you see anything you liked?”

Lucifer took the sheet with stiff fingers, ignoring the clear liquid that spotted it. “No.” he lies, even though he knows its useless- Diavolo always knew when someone was lying.

The edge in the prince’s gaze sharpened, contrasting the companionable slap he gives to the Avatar of Pride. “Good. And remember,” Diavolo guided his friend out of the room. “____ belongs to me.”

The other demon nods, walking away, intent on returning to the HoL as soon as possible. After all, he had a very busy night ahead of him, filled with fucking his fist to the memory of your voice.

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