Hiii! Can you write some Sebastian Michaelis or Undertaker headcanons I’ve been obsessed with both of them for the longest 🤭
omg yes, yes, and yes!!! i'll write it in black butler canon and of course, if you'd like it in another timeline, lmk :)
𐙚 sebastian, simply due to the fact of pretending to be a human butler, is a very caring and nurturing man in public. not in a pda way or lovey dovey, but he will bend down to tie your shoe, remember how you enjoy your coffee or tea, and secretly give you the biggest slice of pie when serving. (unbeknownst to ciel)
𐙚 but don't get it twisted and think he views you higher than any other mortal, similar to agni, he just finds you more tolerable and easier to spend time around.
𐙚 sebastian holds you to a higher standard than most because he knows you are capable, which is the reason he decided to entertain himself with you in the first place. he is stern when it comes to your ambitions and will not let you take too many leisure days in a row or go out looking like you just crawled from the phantomhive wine cellar.
𐙚 he does find it harder to say no to you, though. don't think he won't pull threatening strings to a publisher if you want to put your novel on the market, or to a fashion agent if you want to be a model. anything you want, you somehow mysteriously get.
𐙚 behind closed doors, sebastian is much softer with his words, and of course, a little more hands-on. he particularly enjoys dancing with you in the silence of the ballroom when everyone else has long gone to bed or read to you until you fall asleep in the crook of his arm. if he's truly in a good mood, he might let a "darling" or a "sweet dove" slip past.
𐙚 sebastian loves you in elegant material. since money doesn't necessarily apply to him, he loves to dress you up in the most expensive yet tasteful garbs he can find. anything that might be your style, he'll get it exclusively made so that only he gets to see you in it.
𐙚 your relationship is kept relatively private to the rest of the phantomhive household, of course, there is talk, but no one but ciel dares to pester either you or sebastian with it. especially sebastian. but there are moments when his eyes linger too long on you or your hand purposefully brushes over sebastian's when he passes a plate to you. the tension at dinnertime is always palpable and leaves ciel complaining.
𐙚 (smau) as far as in bed, he loves to keep you restrained and be the one to order you around. impact play isn't off the table, but don't think for even a second he would be a sub. sometimes he's scared he might hurt you, but not particularly out of fear for you, but more so the fear that he might not have something this enjoyable again.
𐙚 this man is a demon. as much as you wish he would actually love you, you both know it's improbable. however, his version of love could be equated to the fact that he's actually pampering you without a soul contract.
𐙚 unlike sebastian, undertaker is simply a grim reaper. he's not bound to any sort of malicious intent, but he is, however, absolutely insane.
𐙚 if he truly took an interest in you, he would love nothing more than to convince you to indulge in his experiments with him, and fantasize one day about keeping you alive forever as well.
𐙚 he thinks you are downright hilarious, and that's what makes him fall for you in the first place. he laugh could probably be heard two blocks down even if you didn't particularly say anything funny. sometimes he would excuse by just saying you were funny to even look at, which you swallowed as a compliment for undertaker.
𐙚 he's an expert at remembering things you like. favorite candy, favorite color, anything you say he mentally backlogs it for later. this usually makes holidays and birthdays the best days with him. don't be shocked if he gets you a bag of just blue raspberry flavored candy because you mentioned you like blue raspberry the best two years ago while on a walk.
𐙚 contrary to popular belief, he thinks you look best when you are most lively. ciel once commented that he always thought undertaker would have a thing for dead people, but the silver fox always dotes on you the most in a brightly colored outfit with your cheeks all peachy to match.
𐙚 on a more serious note, undertaker would actually kill thousands for you without even a blink. he's already had too many he held dear die on him, and you won't be the next. sometimes you fear he's already killed plenty in your name who he viewed as a threat.
𐙚 he's an incredibly secretive man up to the point that you still don't know his real name, and you don't think you ever will, but the relationship is too fun to care, and that's usually his way of keeping you from asking questions to begin with.
𐙚 rather obsessive behind closed doors. once you've drifted off to sleep, he will study your face and the shade of your hair, perhaps plucking a thread of it just for safekeeping. one time, you caught him at four in the morning, just sitting up above you and staring. he hushed you back to sleep, assuring he was just admiring your dreaming figure.
𐙚 (smau) you already know the guy is a FREAK! particularly into sensory deprivation and overstimulation. he gets a real kick out of watching you squirm against his palm as he forces the fourth orgasm out of you. he prefers you call him master or sir in bed rather than undertaker.
𐙚 i'm not sure if a completely healthy relationship is realistic with undertaker, but the time with him is fun regardless. he loves corrupting you into becoming someone to work alongside him, but only if need be, he'd rather keep you out of the mix of dangerous inhibitions if he can.
