#sebastian's true form | Explore Tumblr posts and blogs

sugurouge · 8 months ago

Text

— yes, my lady : sebastian michaelis x f!reader

content warnings! reader is a descendant of the phantomhive family, power imbalance (master/servant) but also (human/demon), somewhat monsterfucking if you squint (i wanted to make use of his ‘true form’ a little), smut, size difference, manhandling, praise, pet names (my lady, darling, dear), orgasm control, sacrilege, a tiny bit of blood, topics of loneliness

summary: after another tiresome day out in the world, you are greeted with your recent mistake—sebastian. a hand-me-down from your ancestors that you summoned by chance and who now apparently has a contract with you. yet this modern world, working women, independence, and your awfully bratty attitude are challenges that are entirely new to him. however, he did swear to serve you. so, allow him to take care of his tired "mistress"

wordcount: 5k | my kinktober masterlist

It’s not every day that your job becomes stressful enough to fully tire you out. But today, today was even more draining than you had anticipated. Deep red eyes watch your tired form from across the hallway, raking over your figure as the owner remains quiet. Sebastian hasn't quite understood the fulfillment behind humans working themselves to the bone, nor the desire for young women to eagerly venture out to conquer “corporate,” as you once called it.

Yet, understanding or not, he is sworn to serve you and look after you. You are in his care until the contract is completed.

For this, he steps forward, his touch as sultry and gentle as his voice that welcomes you home. “My Lady,” the demon begins, as strength returns to your figure upon the stabilising hold of his hands on the small of your back while you remove your heels. You meet his smile with a glare from your pretty eyes, still wary of your newly added decor.

“I can handle myself just fine, Sebastian.” Yes, you’re a feisty one. Sebastian has been well aware of that fact since the moment you met. You dislike men staring at you in the street, loathe the forced small talk with them at work, or having to humour one of them when all you want is to be in the safety and comfort of your home. The once safe haven you now share with some sort of butler, or so he proclaimed. Never would you have expected such an outcome from your family’s antiques.

But here you are, the independent woman from before, now with a handsome devil at your beck and call. “You appear particularly exhausted tonight. Why not let me take care of you and help you to a restful night?” Sebastian proposes with gentle calmness to your vervour as his hands return to rest behind his back.

He irritates you. His act of concern for you when all he truly cares for is your soul. The motive is clear, yet he play-pretends to be something you cannot wrap your head around. “And what could you do for me?” you challenge in return, crossing your arms in front of your chest as the tip of your nose lifts a little higher to meet Sebastian’s gaze. “Anything you wish,” replies the butler, without a hint of malice in his words. “I would propose running a hot bath, brewing a warm cup of tea, and—” he pauses, clearly having caught himself with an idea you would despise.

The proposal sounds pleasing, almost exactly what you would do if you weren’t feeling too lazy to run a bath for yourself. But he doesn't need to know that. Your expression remains unfaltering, almost challenging. “And what? Speak, Sebastian.” The quirk of your brow ticks Sebastian off in just the right way, your confidence and demand a challenge he secretly enjoys.

The distance between your bodies grows smaller, and a gloved hand tips your chin up as red hues draw near. “A massage for your exhausted figure, my Lady.” He drawls the title, a pinch of condescension hidden in his words. You can’t resist the idea of standing on your toes, leaning further into his space to see him shrink away as your lips almost brush Sebastian’s while you speak: “Carry me, Sebastian.”

Yet, he does not shy away. He feels your pulse quicken, hears your heart drumming a beat of bravery, while your sweet lips could offer a relief he hasn’t felt in millennia. A smirk tugs at the corner of his mouth upon your demand and, without hesitation, you find yourself in his embrace. Knees and shoulders pressed firmly against his body, Sebastian carries you to your bedroom.

He knows tonight won’t be easy on him. Sebastian is well aware of the mischief you try to conceal, to seem more mature than you actually are. But tonight you appear different; tonight, you bring new challenges to your rendezvous once your head finds its rest on his shoulder. The tease of your breath against his neck, your smaller fingers playing with his necktie as you wet your lips. Nothing good comes from those pretty lips, Sebastian notes.

“Sebastian?” How can you suddenly say his name so softly? He looks down to you, the crimson tinge to his eyes making him appear like a starved hunter under the faint lights of the streetlamps and mood lights in your apartment. “The water is already set and at the perfect temperature for the female body.” Of course, he had heard your footsteps from afar and decided that tonight would be perfect for a bath. He is an expert at planning, at being one step ahead of everyone else. That is, until you continue speaking. A simple command, short and to the point, too alluring: “Undress me.”

You need to try harder if you wish to get a rise from him. For now, you find yourself seated on your bathroom counter with a newly found frown adorning your face. It doesn’t suit you, but it entertains Sebastian. “Your wish is my command,” he speaks an octave lower, honey almost dripping from his words before skilled fingers smooth out the fabric of your blouse. Sebastian’s gaze does not meet yours while he unbuttons it; he stays focused on the task without lusting over your exposed skin.

Suddenly, you wish he would want to devour you. The gloved touch that teases your upper body is not enough, yet so close to the fulfilling feeling of desire that you miss.

The clothing item is pushed off your shoulders before his touch ghosts along your waist. “May I continue?” The question is accompanied by one hand held out to you, palm facing up for you to grasp and rise to your feet. In one swift move, you find yourself staring at your reflection in the mirror as Sebastian spins you around to undo the intricate buttons of your skirt you had struggled with this morning—why must designers place them in such difficult spots?

To nobody’s surprise, they are undone as quickly as your blouse, before your silk dress follows suit and pools around your ankles, leaving you in nothing but a tantalising set of underwear—dark red, almost a perfect match to Sebastian’s eyes. You eyes meet through the mirror and you refuse to shy away. No, like the little vixen that you are, you lean forward just enough to expose yourself further to your demon as you pretend to busy yourself by wiping off your lipstick.

It feels humbling to witness his gaze remain unfaltering; Sebastian continues to look into your eyes rather than the places you want his greed to be. “I will prepare your tea now,” he states as business continues as usual before leaving you alone.

A sigh is all you allow yourself as your shoulders slump. You really tried to seduce him. At the thought, you find a smile tugging at your mouth, the lust to be desired something that has been missing for a while now in your life. You know work, you know how to overwork yourself, and you have no time for flings or meaningless encounters. That was when he entered the picture.

Upon Sebastian’s return, he finds you seated in the bathtub; You’ve made sure to keep your hair out of the water and expose your neck, for hungry eyes to appreciate the shein layer of damp on your skin. The plate beneath the teacup meets the ceramic of your bathtub as your widened—nearly pleading—eyes shoot up to challenge his. If only you had acted a second quicker, you would have caught him staring at your cleavage, barely covered by the water and foam.

“Is there anything else you may need?” Sebastian inquires. He hates to admit it, but tonight seems like a greater challenge than he anticipated. How the simple word “You” could weaken a demon of his calibre is something for future Sebastian to concern himself with. Present Sebastian relishes the desire tugging at his stomach, the way you stare at him so submissively. Until you continue speaking: “Massage me, my butler.”

You turn your back to him as he takes his place behind you on the edge of the bathtub. Would you still be so smug if he grabbed your cheeks between his fingertips? If he forced you to look deep into his eyes while coaxing the cutest sounds past your lips? How can you act this way when at night you hump your pillow and beg for more, something better? Yet in the daylight, you behave like a spoiled princess, and he only adds to that imaginary status of yours. How badly he would love to ruin it. One or two more slip-ups, and he might find a loophole in your contract and commands.

To your dismay, gloved hands meet the skin of your neck. “Take them off, Sebastian. Touch me fully.” Your words bounce off the bathroom tiles, and his reply of “Yes, my lady,” echoes back. Shivers elicit along your neck as his skin touches yours, and the strength behind Sebastian’s touch massages the knots and the sorrow from your shoulders.

The moment is sweet enough to let your eyes fall closed, your head resting against Sebastian’s thigh as you sigh a gentle moan of relief. The sound snaps Sebastian’s attention to your face. With your eyes closed, he allows himself a moment to admire your features. Even a demon can admit that some humans are indeed beautiful. Sometimes, that beauty doesn’t surpass their soul, but in your case, there is something so unique about you that captivates Sebastian’s attention and lust.

You catch him staring as your eyes flutter open, the position you find yourself in so vulnerable, with him leaning above you. “Naughty butler…” you tease, and Sebastian wants to wipe that cheeky smirk right off your face. “If you have so much time to stare at me, you might as well wash my body for me.” The disrespectful teasing, as if he were nothing more than a pet, reminds Sebastian of someone else, someone he couldn’t wait to devour many years ago. But what else could he do but make himself useful for now?

In a swift move, Sebastian shrugs off his jacket and pushes up the sleeves of his buttoned shirt before kneeling beside your bathtub. He appears disinterested again, putting on a perfect mask of nonchalance as he runs the washcloth along your shoulders and arms, warming your figure and letting rose-scented water wash the sorrows away.

Until you’ve had enough of this act. Until you grow overly confident as you lean into his proximity: Your fingers lace around Sebastian’s wrist like a personal handcuff, your eyes locking onto his. “Be more thorough, Sebastian. Wash away the filth.” You go as far as to help him run the cloth over your chest. The drag of his nails against your sensitive skin sends shivers down your spine, and Sebastian watches you attentively, to witness your pupils dilate, the pink tip of your tongue darting out to wet your lips as your noses almost touch. He has never obeyed such a troublesome person before.

You start to bring out the worst in him—something that wants to teach you a lesson, something to remind you how different the roles could be if it weren't for this contract. The washcloth is pushed over your breasts and dips beneath the surface of the water to run along your stomach before being abandoned entirely as Sebastian’s fingers dip into the supple flesh of your thighs. Blunt nails drag along your inner thighs, and he loves to watch the shift in your demeanour; how you grow shy beneath his touch, your stare faltering as he draws dangerously close to your sacred area.

There is no bite to your bark as you cry out his name, your need for him too evident while you try to maintain a pretence. "S-Sebastian!" Finally, you act as your thighs press shut around his hand, panic ever so evident in your pretty eyes he can't stop the devilish smirk from spreading across his features. "My dear, don’t tell me you expect to play with fire and come out unharmed…"

The next moment, your back meets the cold stone as Sebastian races forward, hands placed left and right from your figure on the edge of the bathtub. The impact forces a puff of air to escape your lips as your eyes snap up to meet your butler’s dark pair, searching for a trace of humanity in those pools of crimson. "Behave…" you attempt to regain control, which is met with a chuckle. "I only follow your commands," he challenges as the cloth returns to clean your body. "You wanted me to be thorough, let me be thorough."

However, the lips that crash against the racing pulse in your neck have nothing to do with the command of cleaning your body. Sebastian acts upon his own selfish accord, upon the lust you’ve ignited by teetering too close to the dangerous territories of demonic desires.

And he makes you feel too good as he ravages you, suckling and nipping at your skin until you can't help but moan, your head falling back to offer him more space. You can't even think of a fitting command, the sweet words for him to "Don’t stop, please," a much more natural reaction as his palms cup your breasts, pinching and pulling at your nipples until you whimper ever so prettily.

"Who would have thought you could turn into such a sweet darling?" Sebastian teases with whispered words against the shell of your ear, the hum that follows so deep and low it has your stomach fluttering. Your fingers lace between his dark strands, effectively holding him in place as you return to being face-to-face with Sebastian. Shamelessly, you allow yourself to rake your eyes over his sharp features. You've never wanted anything more than him. But the thought evaporates upon the sharp sensation of nails against your waistline and hips, upon the pair of fingers pushing between your folds before rubbing against your clit.

Oh? How willingly you part your legs now, Sebastian muses.

"Is this thorough enough, my lady?" he mocks as his fingertips press against the opening of your pussy, your eager hole giving way slightly as he pushes past. He knows what he’s doing to you. He sees it in the crease of your brow, feels it as your hips buck against his touch. "More, Sebastian, I need more tonight." Like the greedy thing you are, you take it upon yourself to play with your breasts, yet the silent plea in your eyes tells your butler all you want is for him to take care of you.

“Oh dear,” he whispers gently, but smiles victoriously as your moans tumble from your trembling lips when two of his fingers push inside you. "Do you give yourself to me? Allow me full reign, hm?"

The idea sounds great, perfect, until you manage to flutter your heavy eyes open and see the devious apparition in front of you. Sebastian’s eyes are more slanted, set ablaze, deep pink hues now replacing his usual red, with lust overflowing past his thick lashes as pointed teeth hide behind his full lips. Giving yourself to a demon doesn’t seem like the best idea, but the fingers stimulating your gummy spot have you nodding regardless. How lucky you are that you need to use words under these circumstances.

“Darling, tell me,” Sebastian urges as his thrusts become harsher, uncaring for the water or your comfort as your tits bounce and your walls clamp so promisingly. “N-no, no, Sebastian! Just, ah—” you falter as you try your best to stay present, to keep control over this demon while he fingerfucks you. “Think, speak, quickly, little Lady,” he further pressures you. What he wouldn’t give to do with your body whatever he wants. “Just-, just tonight! Sebastian—” the way you moan his name makes you a sinner itself, it should send you to all seven hells as the echoes ring inside his mind. “Look after me, tonight,” you finally manage to cry out as your walls pull in desperate need. “Make me feel good,” your final demand.

But instead of sweet release, you feel the disappointing emptiness as he retracts his fingers, leaving you a heaving mess in your bathtub—only now do you notice how cold the water has turned. “You can ask more nicely than that, my dear.” There is little consideration to be spared for the length of your bath once a strong arm wraps around your waist. Sebastian wastes no time in having you seated on his lap, your wet form drenching his clothing as he spreads your legs over his thighs and presses you flush against his chest. “I will look after you until the day you die,” he whispers into your ear, and maybe if the words weren’t so true and less intimidating, you could consider them romantic.

You notice that Sebastian’s form has returned to fully human, with almost tender eyes meeting yours this time around, turning your desire mellow and seasoned with sweetness. “Kiss me, please.”

He follows suit as your lips crash together a moment later, his palms stabilising your back in his hold. “More…” you breathe. Your fingers reach out to guide one of his hands on your back, between the valley of your tits, down your stomach, until you ultimately buck your hips against his, seeking further friction in desperate need. He tightens his hold on your body, tugging gently at your frame as he leans forward to suck on your wet skin, leaving marks in his wake. A small grin tugs at his lips as a soft whimper escapes you. “What’s wrong?” The whispered question makes goosebumps spread over your skin as the chill of his breath battles with the warmth of your bathroom.

“Want to be ruined by you.” The words that fall past your lips seal your fate. “Please, make me feel good, Sebastian.” You sound so desperate, only a fool would resist. “Taint me,” you shamelessly sigh against his ear, “Let me feel you.”

“Taint you…” he murmurs, halting his movements momentarily to witness you grow impatient before one of his arms holds a firm grip around your waist, restricting your movements as you’re now fully pressed against his chest. “How much more does my little Lady want to be tainted?” His free hand ghosts along your puffy lips, your slick making the drag too easy, too appealing to not draw circles into your clit, only pulling back any time he feels you squirm on his lap. Your little cries are music to Sebastian’s ears. It’s so good, too good, the way his fingers move, almost as if he already knows all your weak spots. “Do you wish to experience bliss only I could give you, and ruin yourself for all eternity?” His questions urge you to wrap your arms around him, to hide your face in the gentle embrace of a monster, as though you’re trying to hide from judgement itself upon your immoral fantasies. “I wish for that, Sebastian.”

No further words are needed, not when your lips convey more as they meet Sebastian's. A kiss so fierce, he may steal the air from your lungs and drag you to hell himself. Teeth pull at your bottom lip unapologetically, his tongue meeting with your own, entwining with another until you taste him. Meanwhile, the familiar stretch of his fingers, accompanied by the filthy squelching of your arousal, threatens to overload your senses. The teasing returns as your lips part to allow Sebastian a front row seat to your desperate play, as his thumb presses into your clit. You really yearn for this orgasm, don’t you? Of course, you do, with how tightly you clench around his digits, pulsing as though you’re trying to keep him inside—as if he couldn’t offer you a much better alternative.

“Let go, my dear, you look so beautiful right now, I want to see you come undone for me.” Sebastian encourages, as his fingers expertly curl against your walls, each time pushing past the limits of what you’re able to take. So you let go, finally, allowing your eyes to shut as your fingers fist the fabric of his dress shirt. He’s never received praise in a prayer-like form, the sighing thank-yous tumbling free between your moans, so unlike the feisty thing you pretend to be. You are adorable. “Very good, my darling, just like that.” Sebastian whispers, as the movements slow down until his fingers still inside you, until the heaving of your chest and the trembling of your thighs calms, and you fall into his embrace.

But much to Sebastian's surprise, and despite his predictions about your exhaustion, you return his previous affections. Your lips kiss along his neck as you undo his necktie, fingertips already so eager to free him from the confines of his clothes, it makes Sebastian wonder who the real glutton between you two is. “My Lady,” he innocently halts your advances as he entwines his fingers with your own, kissing each tip while holding eye contact. “Shouldn’t we proceed to your chambers? I don’t wish to bring needless discomfort upon you—you need your strength to handle me.” At that, you feel his tongue drag along your pointer finger before a final kiss is placed on its tip, while a devious smile returns to Sebastian’s lips. If only you wouldn’t look so adorable each time he teases you. But you are already too far gone to keep up pretences, when you can instead allow someone else to finally be your resolve.

So it's only natural for you to command Sebastian once more. “Bring me to my bed,” you mumble while your arms already lace around his neck. He follows.

Yet it catches you by surprise once you’re simply dropped into your bouncy mattress and sea of pillows. However, in the next moment, you find yourself caged underneath Sebastian. Your hands roam free to undo his dress shirt and shrug it off his figure, allowing your nails to drag over his pearly skin until you reach his pants and finally feel what lies hidden behind the dark fabrics.

You seem in control, until firm hands spread your thighs and Sebastian leans in, to nibble along your inner legs, shining in the moonlight as he dives between your thighs to lap at your cunt, his tongue pushing past the tight ring of your entrance before dragging all over your hot and puffy pussy. He then licks and kisses his way up your stomach, sternum, and nipples, while the surprising satisfaction of his cock—hot, hard, and leaking with pre-cum—coats itself with your juices. He grinds against you until you writhe for more, until his hands find rest on the back of your knees so he can press your legs up against your sides, fully opening you to thrust into you without struggle, without restraint, as lust overcomes him.

You shake your head at the stretch of his girth welcoming your pussy, sweet pleas mixed with whiny complaints escaping your lips without much thought. “‘S too much, Sebastian… can’t…” you admit. The chuckle that follows is devious, before a soft sigh in satisfaction follows as tender lips place an adoring kiss to your cheek. “You will,” Sebastian whispers, followed by the command “Now just surrender to me.” His lips seek out your own once more as he picks up a relentless pace.

Your nails dig into his back, leaving red streaks that run deep. You can’t look at anything but him—his strong body on top of yours, the visible strain to his muscles while he ruts into you—until you find yourself once more captivated by his eyes. He almost looks at you lovingly, no hungrily. But Sebastian doesn't just want to consume your soul; no, his desires reach beyond basic greed. He wants to own you, to keep you to himself, to reign over you until your best years are over. You can see it clearly while swimming in crimson. But with the delicious drag of his cock inside your walls, you might just let him. Who would have expected you to be tamed this well by getting fucked?

“Please, please, please,” you exhale as your head lolls from side to side, writhing beneath your very own demon. Oh? You’re quick to beg. Quick to turn desperate, so eager to have more of something that should never have been yours. “Sebastian, Sebastian,” you repeat like a mantra as his hands hold your fragile body, digging into your hips to force you into a perfect arch for Sebastian to ravage your skin. He litters kisses over your chest, laps at your nipples, and drags your hips back down to snap against his while he is guided by gluttony.

“Give yourself to me,” you demand with no trace of shame in your bones, finally giving him a task worthy of your beautiful soul. “Stay with me, be mine…”

You almost feel dizzy with how easily Sebastian hoists you up until you’re on all fours, ass perfectly exposed for him to fully sheath his cock inside you, effectively pushing your upper body into your sea of pillows. But in stark contrast to his rather harsh handling of your body, his lips return to press soft kisses along your back. “I am yours if you are mine, my darling.” The words flow like honey before your blood coats Sebastian’s tongue as he breaks the skin, engraving himself on your skin.

Your fingers dig into the cushions, searching for support as you struggle. But the strong arm lacing around your body is all the comfort you will need from now on; his cold touch will soon set you ablaze.

Sebastian is deep inside you, the head of his cock finding your sweet spot almost naturally as he perfectly curves against your velvet walls, hips snapping against your ass with unforeseen fervour. His hands dig into your hips, surely bruising your hip bones for the coming days, but you’ve never felt this good before. Never so full, never as cared for as by the monster that is in love with your soul. You moan his name in delight, making Sebastian proud once you eagerly bounce back into his thrusts.

The husky sounds of pleasure grow clearer as his movements slow down. You feel yourself being further pushed against the mattress, to spread your legs wider and arch deeper, for his penetration to slowly steal your sanity. Who would have expected the pressure of his palm against your stomach would make you clamp around him this much? Moaning, whimpering, pleading as you beg for mercy, trying to tell him it’s too… “Too good, Sebastian, I’m—”

His movements are slow but precise, accentuating the way you desperately clamp around him in an attempt to hold him inside you for eternity. “Yes, fall apart. Let go for me,” Sebastian’s eyes roam over your smaller body beneath him—a sweaty, shaking mess. He will take care of that right after you are done. For now, instead of worrying, his hands grab at your ass almost aggressively, spreading your lower lips even further as he ruts into you.

The high-pitched squeal that escapes your throat when he picks up his pace again serves as a perfect display of your misery. Tears prick at the sides of your eyes as your hips are pushed back to meet Sebastian’s relentless thrusts. “Make me proud, little Lady...” his final demand, with sneaky fingers returning to play with your clit as he hoists you off the bed, holding you tightly against his chest.

You’re fully seated on his cock, entirely engulfed by his embrace and consumed by the demon, just as you bask in the sweet release coursing through your veins. Sebastian allows himself to be lost in your pretty cries and the way your pussy practically drips from both of your orgasms. True to his nature, he watches you like a devil on your shoulder; dark red eyes witnessing your fucked-out expression while the cutest smile illuminates your features.

His lips caress your neck as he whispers, “Do you feel better now?” You hum and let your fingers card through his hair, a tired “I do. Thank you, Sebastian” exchanged from your mouth to his ear.

Swiftly, Sebastian moves to carry you back to your spacious bathtub and lets it refill with warmth. “How about my Lady actually relaxes this time around?”

dividers by @/cafekitsune

#sebastian michaelis x reader #sebastian x reader #black butler x reader #black butler smut #sebastian smut #sebastian michaelis smut #✧ softly spoken #kuroshitsuji smut #kuroshitsuji x reader #kuroshitsuji sebastian #about.sebastian #black butler x you #black butler x y/n #sebastian michaelis x you #kuroshitsuji fanfiction

3K notes · View notes