#sebaciel headcanons

[teddylovestea]

something soft/cute for day 4

Headcanon that Sebastian becomes really worried everytime Ciel gets sick or has a cold, which he is fairly prone to. Sounds banal, but it's something he can't truly protect his charge from, something he has no power over. He can only help him to the best of his abilities, but everytime it happens, there is a slight possibility that Ciel might actually die. Thus he is very overprotective whenever his master finds himself inconvinienced by his health and stays with the little earl whenever he has time during the day and night. On the one hand, to keep him company and on the other to watch over him and monitor his state. Ciel, for his part, sometimes thinks it's a bit unnecessary but enjoys the attention nonetheless.

#sebaciel week 2023 #sorry for not having something for every day of the event week #I heard of it too late and life has been pretty busy lately #kuroshitsuji #black butler #sebaciel #sebaciel headcanons #gay people

[allsebaciel]

Sebastian would be terrifying as an angel.

I imagine all of his usual charm and the feline behavior would be drained, leaving behind a perfect statue of marble and onyx. Perhaps he would cast a glance down at Ciel, consumed by depravity of the cultists, and he'd reach his hand down to smooth the hair on his forehead. Maybe he'd take his time, cruel as all angels are, until Ciel is spent and exhausted: there's no rush, the boy is already broken, already his.

Were Ciel saved by an angel, he would be terrified and crawl back into his shell; a shaking, scared little thing. Sebastian's grip on his wrists would be cold and unwavering instead of flexible and warm, his voice lacking the demonic highs and lows, monotone and indisputable as the scripture.

And maybe Ciel would find no closure, scrutinized by an emotionless guardian behind his shoulder.

#text #i love retraumatizing ciel #au #sebaciel #sebaciel headcanons #pro sebaciel #proship #pro proship #black butler #kuroshitsuji

[justshipit]

How does anyone see this and not realise how romantic and sweet this scene this, they lived in an era where a lover/beloved being held this way has significance, animators knew what they were was doing with this scene

*They're almost kissing when their gazes graced each other*

#sebaciel #ciel x sebastian #sebastian x ciel #sebaciel headcanons

[sebadztian]

Sebaciel Headcanon of the Day

Sebastian feels so relaxed and safe when he's with Ciel that he actually manages to sleep. He trusts Ciel to not only hurt him when he's at his most vulnerable state, but he also trusts that Ciel is going to protect him just as much as Sebastian would protect Ciel.

#sebaciel #sebastian michaelis #ciel phantomhive #sebaciel headcanons

[psych3-delic]

AU where Sebastian is contracted with Vincent and not o!Ciel. The incident never happened. So to o!Ciel, he’s this slightly creepy, slightly funny butler that follows his dad everywhere and sometimes appears seemingly out of thin air in the dark. He’s also the only one who pays the boys any attention and hang around him when there isn’t any urgent matter (mostly so Sebastian can make one-sided sarcastic remarks about Vincent to an audience who doesn’t understand/cannot babble to his master).

Sebastian initially regards o!Ciel more like a sickly kitten; slowly he grew infatuated, protective, even possessive. It gets to a point where he would readily betray Vincent if he’s in a situation where he has to choose.

O!Ciel is likely attached. After one of the kidnapping attempts, he doesn’t feel safe with anyone but Sebastian and r!Ciel, not even his parents.

R!Ciel is still a brat to Sebastian (like in the manga). He find any chance to abuse and talk down to him (similar to Alois to Hannah) even though he doesn’t know Sebastian’s true nature.

Sebastian calls Vincent “dana-sama” and r!Ciel “Ciel-sama”. O!Ciel is still lovingly called “bocchan” (But Sebastian refers to him as “kitten” in his head.)

Fic here

#sebaciel #sebasciel #AU #headcanon #Kuroshitsuji

[thefawnfallacy]

Sebastian enjoys touching Ciel, that much is obvious. The hands on his hips, his thighs, his shoulders when he’s guiding him. Ciel’s brother also likes touching him, which is more of a problem because, well, Sebastian should be the only one ever touching his meal.

#these two HATE each other dont @ me #cant stand the idea that ciel is attractive to both of them #cielcest #r!ciel #o!ciel #kuroshitsuji #ciel phantomhive #sebastian michaelis #sebaciel #black butler #black butler headcanons #kuroshitsuji headcanons

[deevotee]

I know its a common joke that the other servants would walk in on sebaciel but I was thinking about it and realized that bardroy "ciel should not see a dead body, kids should be kids" and mey rin "finny should not know I'm a sniper he's just a kid" would try to beat the absolute fuck out of Sebastian once they figure out hes fucking ciel. They wouldnt win. But they would try and that's what counts

maybe they'd become appeased after a little while of going back and forth on it (and giving sebastian some mean ass side eyes everytime they see him) but it would definitely take a couple of tries from ciel to make them just accept that its just going to be a thing, but thanks for looking out for him he guesses

#i started writing this in my drafts last night before passing out #woke up this morning and was like #'you know what? im right actually' #i just really love the servants looking out for ciel <3 #sebaciel #ish #its more about the other servants lol #mey rin #bardroy #baldroy #sebastian michaelis #ciel phantomhive #black butler #kuroshitsuji #devo speaks #headcanons

[dante-redgravee]

Due to personal reasons I hc that all of Sebastian's bodily fluids are black. You're welcome guys.

#sebaciel #sebastian x ciel #personal headcanon #black butler #ciel phantomhive #sebastian michaelis #this has been a self related post

[a-sad-writer]

Anyway, Sebastian likes to give love bites to Ciel and no one can convince me otherwise. He likes biting Ciel's neck or shoulders the most but while they are at Weston he has to find parts of Ciel's body to bite where no one can see the teeth marks.

#sebaciel #sebaciel headcanon #nom nom nom #black butler

[midnightasteris]

I was thinking about the ending of the manga.

And imagine we get a prologue scene that occurs 200 years after the completion of the contract. Sebastian is alone in hell, just watching above, until he hears the sound of a soul calling to him.

He goes to his new master, and the person that summoned him notes that this demon is wearing a peculiar ring as a pendant around his neck, a ring made of the deepest blue sapphire.

The new contractee makes a deal with this lonely devil, and then they ask him, “demon, what’s your name?”

He looks up to the sky, pensive for a moment.

The demon closes his eyes, as if remembering something important, and says with a somber smile, “Sebastian”.

#sebaciel #black butler #ciel phantomhive #sebastian michaelis #kuroshitsuji #midnightasteris #just a headcanon #this would break me #absolutely break me

[teddylovestea]

sebaciel ns/fw headcanons I´ve been asked for a while ago (and some sfw ones in between) ♥️

Sebastian initiates stuff usually, since he knows about Ciel´s desires, yet also knows that the little one tends to be too embarrassed or proud to act upon them. He gives his demon subtle hints though, like careful glances and small touches. Light squeezes of his butlers hands when he helps him out of the bath, a lingering gaze when they´re in the study or the discreet folding back a corner of the covers for the demon to join him in his bed.He also pulls Sebastian through the contract to him.

Although they have engaged in quite some nocturnal activities so far, Ciel still feels self-conscious about his body, thinking he's too small and skinny. Sebastian of course doesn´t mind his masters appearance in the slightest. Quite the contrary, he considers the boy to be exceptionally beautiful and never misses an opportunity to make this known. And Ciel feels so loved, like he´s the most precious and desired thing in the world.

The boy blushes madly when he´s being praised or when Sebastian calls him by any pet names.

He rarely praises his butler though, since he doesn´t like to admit how the demon makes him feel and how utterly and completely he loses himself in the devils arms.

They have safe words and touches (always one for stopping and one for slowing down)

However, as long as Sebastian doesn´t entirely forgets himself, Ciel doesn´t mind the demon to show a bit of his true nature every once in a while. On the condition that Sebastian treats him appropriately afterwards, cleaning him and taking care of possible injuries. And of course the demon always does, making sure his master is as comfortable as possible especially after a rough session.

He also always stays whenever the boy asks him too and also simply when he senses that his master needs the comfort.

Ciel likes it a lot so see Sebastian entirely naked, but is often too ashamed to ask for it, while Sebastian -being very much aware of that- loves to tease his tiny master into admitting it and asking for him to undress.

Ciel often pulls Sebastian's hair and scratches along his back.

He furthermore doesn´t like to make much noise, because he thinks it makes him sound desperate for the devils touch, so he stifles his noises with his own fist, in the pillows or even by biting his butlers shoulder.

On the other hand, Sebastian loves it when his master is vocal, relishing in every moan, whimper or call of his given name that he's able to pull from his masters small bitter mouth.

The tiny earl sometimes hides his face when they´re in bed together, especially when he´s overwhelmed by his emotions and/ or feels embarrassed. But Sebastian continually pries his hands away, whispering softly “ I want to see you”, before kissing all over his master´s little flushed face and licking possible tears away.

Whenever Ciel leaves any wounds/ marks on Sebastian during their midnight encounters, the latter always heals them slowly, in the speed a human body would, taking pride in the little teeth-marks or scratches.

Sebastian also loves to leave marks of ownership on his little charge, but much to the devils chagrin he has to refrain from that rather often. To be precise, whenever the tailor is about to visit, which happens quite regularly.

But apart from that, he often just takes his time to kiss along Ciel´s whole body and the earl just feels so adored.

After some time he is allowed to even kiss the branding on Ciel´s back and along other tiny scars from Ciel´s time being captured, although the boy initially didn´t like that, since he believes these scars are signs of his weakness. However, Sebastian sees them as symbols of his strength and tries to convey this to his little lord in every way possible.

Occasionally they take baths together, either to get cleaned up after certain activities or simply to relax after a particularly exhausting day/ a tough mission. Ciel would sit in between his demons legs, back to his chest, feeling the butler's gentle touches as he washes the boy´s body.

Sometimes, when there's a party at the estate, Sebastian allows his master to drink a  champagne flute or two. Firstly, in order to endure his guests and secondly because after the guests have left the earl will still be a bit tipsy, sleepy and more pliable. He will be almost eager to finally get his clothes off and let Sebastian do as he pleases, while the boy is highly responsive to his touches and very vocal on top of that.

Whenever Sebastian keeps his lord up long into the night, he lets him sleep in the next morning.

Ciel is completely ensnared by his demon's natural form and has certainly more than once asked Sebastian into his bed like that. And even though he often wakes bruised and aching afterwards, he´s never once regretted it.

Especially when his more feral instincts come through, Sebastian really enjoys biting Ciel (mostly on the insides of his thighs or his neck), the earls blood allowing the devil a little taste of the boy´s soul.

As his duties demand, Sebastian often has to work until late into the night. So he´ll bring his charge to bed, tuck the earl in, kiss him goodnight and then leave to the kitchen or his room in order to make preparations for the next day. When he´s finished and there is still some time until morning, he´ll return to his master´s chambers, slipping under the covers and holding the little boy gently through the rest of the night. Sometimes though, Ciel wakes while his infernal servant climbs into the bed. And every now and then he won't just settle contently into the demons embrace, but pull him close into a heated kiss, whispering a breathy "I need you". And the devil wouldn't deny him, wearing Ciel out until they're both satisfied and the boy falls into an exhausted sleep against his servant's chest where he's kept cosy until morning comes.

#kuroshitsuji #black butler #sebaciel headcanons #ns/fw headcanons #sebaciel #sebastian michaelis #ciel phantomhive #o!ciel #textpost

[allsebaciel]

Ciel with a juicy cunt & breedable womb and Sebastian with mixed genitalia that switches from a girthy dick to a fertile pussy to a non-human knotted tentacle & he can impregnate Ciel with any of them.

#text #sebaciel #pro sebaciel #proship #pro proship #black butler #kuroshitsuji #black butler headcanons #kuroshitsuji headcanons #sebaciel headcanons

[justshipit]

Looking for sebaciel blogs please 🙏 I need more of them on my tl

#sebaciel #sebastian michaelis #sebaciel headcanons #ciel phantomhive

[sebadztian]

Finny knows that Ciel and Sebastian are together. He once saw them kissing behind a tree. But he never told anyone about it because he could see Ciel's big smile after the kiss and all Finny wanted was for his young master to be happy.

#sebaciel #sebaciel headcanons #black butler finny

[ryuichirou]

any sebaciel headcanons so far?

Anon! I hope you’re still waiting, because it took me a long time…as always lol

For some reason it was a bit difficult for me to write this one, mostly because a lot of headcanons/thoughts that I had were actually just… random pieces of canon trivia that Toboso herself mentioned at some point lol like the fact that Ciel’s cheeks are just like cat’s soft paws for Sebastian and stuff.

But still, I managed to write something. I hope it’s a fun read…

Despite them seemingly keeping their master-servant sense distance whenever they’re around others, there are some people that catch the tension between them. They don’t even tend to talk to each other when Ciel is having guests around, but when a person knows, they know. For example, Lau catches these things quite easily, even though he forgets about it the moment he steps out of the room.

Speaking of Lau… the real reason why Sebastian didn’t get rid of that tiny dress that Lau brought for Ciel is that he really wouldn’t mind seeing his young master wearing it; he believed there would still be a nice opportunity for it. Which is actually a big deal, because Sebastian seems to be quite picky when it comes to things that Ciel wears, so he would’ve gotten rid of it immediately if it didn’t fit his own taste.

Sebastian absolutely adores roleplay: his entire butler shtick is essentially just a very long roleplay session. So, whenever he gets to put on a new identity/any type of disguise for a mission, he gets pretty excited; it’s always one of his favourite parts of any mission. So the fact that Ciel is pretty good at roleplaying too and catches his cues quite easily and plays along so well is also something that he really likes about him. Sebastian has seen and served so many people, but this is the first time he actually got himself a decent playmate, who is quite good at playing the role of sweet and innocent child while also being quite a cruel calculating boy.

And although Sebastian always minds his distance while performing his butler duties (not to ruin the aesthetic and all), he could allow himself more freedom when playing other roles. So there could be some situations in which Ciel would look at Sebastian in a “how dare you” way, with Sebastian smiling, because “well it’s more believable that way, isn’t it?”. He knows that Ciel will have to play along.

Both of them are aware that there is this vague line that they could cross if they wanted to at any moment. It would be weird to call it a “romantic” line because none of them have any romantic feelings toward each other: Sebastian is incapable of feeling it; Ciel would choke himself before admitting to having any emotional dependence on Sebastian. Because he knows that the moment he’ll start even considering anything, the demon wins. Even though, when it comes to their contract, it’s not like it changes anything….

Sebastian really enjoys the fact that Ciel is conflicted about it though. He likes playing with him, teasing him and hinting at things way more than if Ciel would act openly affectionate with him. In fact, it would be quite bothersome and even annoying to Sebastian. So this “will they won’t they” that seemingly exists between them only fuels the situation to spiral further without giving it any resolution.

Although it’s not impossible for them to cross this line, but it’ll only happen if Sebastian decides that it would be amusing and would fuel Ciel’s further decent into darkness. He wouldn’t do anything too openly, but the teasing and the talking and the touching and overall situation would lead to Ciel being so frustrated that he would end up deciding that he actually wants to cross this line. What difference does it make? He’s going to get eaten by Sebastian at some point anyway…

Sebastian teases Ciel a lot, especially if the two are together. He especially likes to take everything that Ciels says literally, because he knows that Ciel actually hates that he stops when he’s being told to stop. And the best thing is – Ciel can’t even complain about it or be mad, because Sebastian is being respectful and caring and obeys his orders. As if he’s not doing it just to piss Ciel off.

Ironically, Ciel doesn’t get triggered by Sebastian’s touch. Maybe it’s due to the overall feel of his hands being so different to what Ciel experienced years ago, maybe it’s because it’s Sebastian who isn’t even human, but the sensations he gets are overwhelmingly pleasant. Almost scarily pleasant, like the opposite side of the spectrum.

They would have at least one talk about how often Sebastian gets to touch his masters like this. It’s not like Ciel is interested or that he cares about anything at all regarding Sebastian, but for some reason he would still ask. And Sebastian would honestly answer that this actually happens quite often, although not every single time. He would also add that he hopes that this doesn’t sour his young master’s mood or make him jealous, with a smile so wide and wicked, that Ciel would  instantly regret asking him.

#replies #sebaciel #headcanons

[bitteraristocrat]

SebaCiel Headcanon of the Day:

Sebastian is consistently frustrated by the fact that he and Ciel have to keep quiet so often, due to their nasty habit of ending up in risky places, and that Ciel is actually quite good at staying quiet (which is a very impressive feat given that Sebastian is quite literally an incubus). However, he knows that his master is very loud and honest when they have total privacy, and gets upset whenever he can't hear him, so he makes Ciel scream at every possible chance.

#sebaciel #sebaciel sunday #headcanon #this is kinda related to Rapture and Rancour