Welcome. This blog is mostly just Obey Me and I do take requests. No smut or nsfw in requests and no hate please. Suggestive asks are ok such as horny crack. Feel free to correct my grammar or spelling if I screw up.
Asks back open, just don't always expect an answer since I end up with a lot in my drafts even without asks. My apologies to those who go unanswered but remember, nothing is stopping you from writing yourself as well, only you truly know what you want. No smut or Nsfw, I will take a greater level of suggestive if it's for psychological analysis or some form of crack but I do not do smut.
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House Of Lamentation Masterlist (fics and Headcanons)
Can you do one with MC who has anorexia nervosa? It would really mean a lot. Thanks!
of course! I feel like there would be many misinterpretations on the cause of Mc not eating enough because of how demon food is visually unappealing.
Brothers X Mc
TW: purging
Demons don't have a full understanding of Human diets so Lucifer makes his brothers take turns bringing Mc things from the human realm so they can have a little more on their plate.
Lucifer thinks the Demon food is making Mc sick too since it isn't very visually appealing and often smells. He remembers how sick his brothers got so he really thinks they just need more time.
He figures out they were not doing well when they returned for the second round of the exchange program and were still underweight.
Lucifer will stop Mc from purging but he won't forcefully interfere with Mc's diet. Lucifer will extend on offer to take them out to every meal because then they have to eat a little bit, he takes them to fancy places so they'd feel guilty for not. Guilt may not be the best method, but if it works it works, if not he leaves a lot of snacks around for them.
Lucifer can understand having a bit of an issue with appearances, the mirror is a very difficult thing to control. He won't bury them in compliments since the words would lose meaning if he spoke compliments a hundred times every hour, but he will let them know they look good in that outfit, that they deserve a little snack, and how he wants to cover them in kisses even if he isn't saying that every five minutes.
Mammon doesn't get why the human's not eating so he smuggles down food from the Human realm.
He figures out what's going on faster than anyone else. He's in the model industry and unlike Asmo he pays attention to all the competition instead of just the main rivals so he knows what it looks like.
If Mc purges Mammon will hold their hair back and give them some water after. He knows if he tries stopping them then they'll get sneakier about it so he just makes sure they have a nice snack after.
Mammon will actively search for foods Mc can eat a lot of. He thinks small snacks with high protein might be good since they don't look filling and Mc might be able to eat a few without feeling super bad.
Mammon crawls into Mc's bed and cuddle them while telling them how beautiful and perfect they are. He sees them as the most perfect being he's ever laid his eyes upon, they deserve to feel like it.
Mammon calls during mealtimes when Mc is in the human realm to tell them to eat. He hates when they come back thinner but more miserable.
Leviathan doesn't know why Mc throws after dinner and he thinks it's because he smells since his seat is next to theirs. He is relieved to find that's not the case, than panics because Mc needs to get enough food. Humans do still need food to live right?
Leviathan approaches Mc after purges with apple slices and a mice comfort anime so they don't have to think about it.
Leviathan has been jealous of other people's bodies so he does have an understanding for Mc's feelings. However he is very angry at whoever made Mc feel this way. Mc's so hot and perfect and while he has definitely put them on a pedestal, he's not exactly wrong about how hot they are.
Leviathan doe not know how to fix anything, but he's here to talk if Mc wants to.
Leviathan has a ton of snacks in his room and will always offer some to Mc, even if they refuse.
Satan has many books on human behaviour, he knows what anorexia is. Unfortunately he takes an embarrassingly long time to notice it since Devildom cuisine can make humans sick too.
Satan will recommend therapy, he's not making them go but he will bring it up every once in a while.
He has many snacks in his room since small little meals might be less daunting. Satan thinks making homemade meals from the human realm will get Mc to eat. He made it for them, so maybe they'll eat out of obligation.
Satan will wait outside the bathroom if Mc purges in case they want some privacy. He has a cat he brought in for emotional support since Mc needs it.
Satan knows enough about nutrition to get Mc some vitamin gummies. It's no replacement for food, but it's better than nothing.
Satan considered making cat shaped foods, but they were too cute to eat anyway.
Asmodeus notices after a pact since his attention is now on them as much as himself. He feels a little bad about not noticing sooner, but they were just a stranger in his house so he isn't kept up at night about his lack of awareness.
Asmo puts curtains on his mirrors so Mc doesn't have to look at themselves and feel bad. He will however open them up and show Mc all the places he thinks are cute since diet is one thing, mentality is another.
Asmo has a range of outfits for Mc's mood. Asmo knows progress isn't a straight line going up so he keeps the baggy figure hiding clothes even when Mc has ups.
"Hot people like us shouldn't feel bad Mc" - Asmo.
Asmodeus quits his own diet for a while to help Mc with theirs. He has curated multiple different ways for Mc to eat enough to at least stay healthy even if it isn't entirely enough. He has to switch them around and gets his brothers in on it to help him decide.
Asmo hates if Mc purges, throwing up is not a pretty feeling. He has water and a fruit bowl for after.
Beel will trade snacks with Mc and ignore them putting their portion on his plate but they started getting really thin.
Beel would make Mc extra dessert, but they need vitamins. It is very unusual to watch Beel willingly give up a few bites of steak, but Mc should have some.
Gluttony is Beel's domain so he's concerned by Mc's hunger but lack action, He eats plenty so all he has to do is have Mc join in. He'll eat a bunch before these dates so he doesn't accidentally eat Mc's plate.
Beel used to have a full course meal prepared for Mc after their purges (there's a bite in the steak). He stops if Mc feels too overwhelmed by that so he gets several different flavours of granola bars so they have a choice, if he doesn't eat most of them.
There are no scales for Mc to cry over in the house of Lamentation, Beel ate them. It was very funny watching Lucifer and Asmo work together to feed beel all the scales in the house.
Belphegor does notice how thin Mc was during their visits to the attic, but he doesn't question it until he is out and sees that Mc still isn't eating demon food.
Belphegor outright lies to Mc about food. Yeah Mc, that thing looks big but it's actually super low calorie, definitely eat a lot of it. he thinks he's helping more than he is since Mc can no longer trust him about food.
He is very upset when Mc purges and will try to stop it before it starts. He drags them up to the attic for a nap.
Belphegor won't try to get Mc to trust him about food again, he'll leave it to Beel. He still has some snacks in his nightstand for when Mc wakes up hungry.
He may never understand what the issue is with Mc's body, he thinks they look pretty and that's what he says.
Belphegor has no real plan, he's never heard of therapy, but he does want Mc to feel better about themselves. He gives them dreams where they can feel the way he sees them.
What are some books that inspire you when it comes to headcanons and such? I’m very curious how you think and what inspires you
So I currently read either classic lit, gay fanfiction, or standard villainess manhwa, however I have not picked up a book in a hot minute. My main ideas either comes from a fic from an entirely different fandom, staring off into space thinking about the brothers, or doing research for my asks. OM has been hyperfixation since middle school and has been my most consistent interest so I find the cast in everything. I have playlists, unshown fanarts because I lost the pages or I hated the anatomy, Characters that make me think of them, and I have started making my own dolls since I couldn't afford the makeship runs. In short, books have little influence except for helping my vocab and I am obsessed with the brothers and sides.
So Lucifer is going in the trauma blender where he belongs but he also doesn't understand that a lot of things that happened to him, or rather didn't happen, were neglect. But we can't leave him on his own, so Diavolo. This ended up pretty short but it's cute and I want it out of my drafts because it's been sitting here for a while.
Diavolo X Lucifer
TW: neglect, hurt/comfort
"You are too nice."
Diavolo's eyes widened, it wasn't exactly something anyone would tell a demon prince. Not only were those words spoken to Diavolo, but they were just cuddling in Diavolo's bed together before they had to get to work. Diavolo was gushing over Lucifer like always when he was told he was too nice. What is that even supposed to mean? People are supposed to be nice to their partners.
"what?"
Lucifer huffed and rolled over to face his boyfriend with a glare "You. Are. Too. Nice."
"Wh- why? Isn't nice good?"
Lucifer huffed "No. You take good care of me and my brothers, you make me eat and sleep normally so I don't collapse, and you limit the work you give me because I "deserve a break" and whatnot."
Diavolo was absolutely baffled "And that's bad?"
Lucifer huffed "It must be, Father is "good" and he never did that, nor the seraphim. . Is there something more you want from me Diavolo? You must want something."
Diavolo sensed no lies from his rather oblivious boyfriend which was rather concerning that meant Lucifer fully believed what God did to him was good, but that conversation could be saved for another day "Luci, you're a demon too, so what do you want from me Luci?"
"I simply want to be a good demon, and you tell me I'm good. I don't believe it is that difficult to understand."
Diavolo smiled at Lucifer "So you want my praise? Is that why you're so nice to me?"
Lucifer huffed and turned away "Forget I said anything."
Diavolo looked up at the ceiling while he thought about Lucifer's words. He traced his fingers along Lucifer's back while humming in thought. Diavolo was happy Lucifer was communicating and he knew Heaven wasn't exactly good but even His Father had made sure he didn't keel over from doing too much up until recently. Lucifer turned his head to look at Diavolo, too indoctrinated to understand the weight of his words or what happened, or rather didn't happen, when he was an angel.
"Lucifer, has anyone other than me told you that you've done a good job?"
"Mammon did once when I beat someone up for him."
"That's not what I was looking for, I should start dropping by the House of Lamentation more often to tell you how good you are doing."
"There's no need for that Diavolo."
"Well I want something from you."
Lucifer tilted his head "And what could that possibly be?"
Diavolo's smile became gentler "To tell you how good you are of course."
Lucifer studied Diavolo's eyes before lowering his own "You really are too nice."
When the whole “MC is the distant relative of human Lilith” got revealed, did your brain do a “Nuh huh, not MY MC” or a “guess this is found family now”
Cuz my brain did an immediate switch when that came to light, for me the brothers now adopted MC, they just need the papers and it’s official.
I love the found family trope, it’s my favorite of the bunch and it’s so cute. I will die on this hill with no regrets.
Also, you ever think that Lucifer potentially considers his brothers as the last piece of heaven he got to keep? Even if it’s now distorted and very different than what it used to be they are still his little pieces of heaven he will defend until his last breath? I cry over that.
ok, when it was revealed my Mc was a very distant descendant, I went with it because of how technically we're all descendants of Adam and Eve therefore all related, but it's far back enough that we don't talk about it. Let's ignore how they canonically have phones in NB or assume it's an alternate universe where the fall is closer to "modern day" and the weird timeline because I say Lilith fell some time around Solomon's reign as the Wise King. Hell we could also be related to Solomon and not know. After that much time it doesn't actually matter, it only has some level of emotional value to the brothers because the others just found out Lilith led a happy life with her lover and Mc is probably talking to her Ghost hanging around the house. They may be projecting Lilith onto Mc but as they learn more emotional skills and heal they'll start letting go of Lilith so they can see Mc for Mc. It is a great set up for found family, but I want Lucifer in a way that is anything but platonic.
Also, the brothers were heaven's "misfits" that didn't exactly do well under the other Seraphim so they became Lucifer's. The only ones I believe were ever actually assigned to Lucifer would be Leviathan and Lilith, the rest simply ended up in his care because other angels could not handle them well and they needed someone relatively more stable, at the time at least, Lucifer was no where near stable until Mc came around. I do believe Lucifer is kept up at night by his brothers following him when they could still be happy in heaven, especially Mammon who isn't truly thriving but Lucifer doesn't have the emotional skills to fix the brothers. He would not see them as a piece of the Celestial Realm but having them all around happy and safe is his version of paradise. Wanting them safe and happy doesn't mean he isn't hurting them, I assume God only taught Lucifer violent correction and probably how to slaughter as many demons as possible in the name of God which Lucifer may have believed was akin to correcting demons but when he realised he was wrong he was too prideful to change, but also didn't know what to change into. He needs therapy, everyone here needs therapy.
It is a rather curious thing how the only animals with horns are pray animals. From sheep to deer, or perhaps to demons? Heaven has looked down on demons for centuries, likely facing minimal casualties in wars against demons since they cannot reach the pearly gates to retaliate, they can only defend as best they can. Horns a symbol of evil yet a ram has committed no crime. Looking back, when demons attacked Mc it was primarily in some form of "defence" with the sole exception of Belphegor who may have had a mental breakdown and seeing his siblings pacified him in the original timeline. In Lesson Six Luke had a grimoire that would allow angels to control all demons, potentially leading them to mass extinction or enslavement if it got into the wrong hands, in lesson three Leviathan perceived unfairness as a threat which it technically was considering his free will was on the line, in lesson five Beel was starving and a starving animal is not exactly friendly when it's food is taken, in lesson ten Satan saw Mc's denial of a pact as an insult to his self-perceived superiority and he may not have fully understood the implications of surrendering his free will through a pact, and in Lesson thirteen when Mc admitted to knowing Belphegor which set Lucifer off since, as Mc saw, Belphegor was arrested for treason and would likely receive a death sentence. While this does not justify their actions, these are all instances with some vague threat or in the case of Lucifer very real threats, however there may have also been another threat gone unaddressed. Raphael was the one originally selected for the exchange program until Simeon had Micheal place him as candidate. If angels truly wanted peace, then why would they want to send a hitman first? Was heaven perhaps intending on killing Diavolo or the brothers, was Micheal planning on trying to force Lucifer to come back, or was Raphael supposed to set off an incident where a demon attacked Luke and he kills the demon so that Heaven can justify another war as the exchange program fails?
We stan both in the houseblog, I love giving Lucifer my disorders so let's go with autism (and some DiaLuci in there). A full DiaLuci post will come later for pride month.
Lucifer has 49 different planned routines and if all of them fail he crashes out.
Lucifer has seven pairs of gloves, one for each day, that all look exactly the same but he can tell the difference. Diavolo keeps handing him Tuesday gloves for Thursday or Firday gloves for Sunday. Mammon has tried shuffling them around but Lucifer could still tell.
Lucifer can tell when the furniture in his room is off by even a fraction of a centimetre.
Lucifer can tell even the slightest difference in his brothers according to canon like a hyper fixation on making them all safe and happy, he can tell if they did something unsafe at just a glance.
Lucifer has beef with overhead lighting, he prefers a lamp or the fireplace. The only exception is Incandescent lighting since it doesn't hurt his eyes.
Lucifer (in canon) can talk about music and the arts for hours, even if the party he is talking to is disinterested.
Lucifer forces himself to maintain eye contact since he knows it looks threatening, however he naturally makes excessive eye contact with his brothers that isn't really forced since he's looking for potential lies or something wrong. He hasn't made eye contact with Diavolo since he swore loyalty, mostly because Diavolo wouldn't care too much about that considering he's even ignoring that Lucifer is staring at his chest.
Everyone thinks Lucifer is normal since they also have some form of neurodivergence except Barbatos who just clocks everything.
Lucifer is very careful with gifts he receives. He was very upset when he lost a necklace Mc got him and searched everywhere for it.
Everything in Lucifer's office and room have very specific places and orders. For example His ties are colour coded by saturation and darkness since they are all red, patterned ties from Mc and his brothers have their own section and they all go in his top drawer to the right, left of that are undershirts.
Lucifer as a preference for tight clothing and lots of layers.
Lucifer had to unlearn that he was the only one that had to clean the shared spaces in the house like he used to in heaven. Keep everything exactly as he liked it when his brothers were constantly moving things was driving him insane. The only thing Lucifer gets is that his brothers leave the remote and CDs in the correct places.
Lucifer is very good at remembering specific dates. He knows the exact time and date Mammon lost his first tooth but cannot remember what was for breakfast, did he even have breakfast?
when first meeting Diavolo, Lucifer immediately criticised the soil instead of greeting Diavolo, likely because Demons were supposed to be lesser than angels (Canon; glory days card). He has learned to be only slightly nicer to people he doesn't see as on his level, but not really he still says what he thinks.
Lucifer is a sensory issue disaster, don't touch him without permission. The only people with the go ahead are Mammon, Diavolo, and Mc who all know where specifically is ok.
Lucifer once ate nothing but Backstabbing Sandwiches for a whole month because he didn't feel like eating anything else and was too busy to join dinner with the others.
Obey Me! Brothers Eyes ft; My HCs. More info on My HCs listed below!!
Lucifer:
Lucifer I wanted to look the most Mature and Handsome. I gave him slit eye pupils and ocular scarring on one eye. I imagine he got his cross shaped scar in the war, it being a mark of a curse his Father laid upon him. Because of this curse, which I imagine to be mortality, I made him look slightly sickly, with translucent skin and pallor. I imagine he’s only got a few thousand more years left to live.
Mammon:
Mammon I gave golden freckles and one golden eye. I imagine he got this eye colour from an attempted spell to try and make his eyes turn golden in hue. However because he failed his spell classes, I imagine this failed, giving him heterochromia and 50/50 heterochromia in one eye. Lucifer scolded him for his reckless behaviours. Also I HC him as Aboriginal Australian, has nothing to do with his eyes specifically but I wanted an excuse to say that lol.
Leviathan:
I Imagine Leviathan has the least humanoid Demon form (it being a massive aquatic reptile) as such he struggles to maintain a convincing human form. This shows through with his eyes, them being dark and unblinking. I imagine instead of traditional blinking he has a nicitating membrane that covers his eyes from dirt and debris. He does however require eye drops to moisten his eyes when he’s away from water. I also imagine some of his scale pattern is still visible in his human form, Showing mainly around his eyes, neck, back legs and arms.
Satan:
Satan is the most humanoid of the demon brothers. Having light freckles, regular rounded pupils, and a more youthful appearance then his other brothers. The only sign something is different is the sigil in his eye, a sign of a spell he performed to grant himself more power.
Asmodeus:
(Note I HC Asmo uses any pronouns so I may use she or they when talking about him) Asmo was difficult as I picture her as a shapeshifter, them changing their body suit the trends. However I decided his most common form has rounded feminine features, long spiky lashes, and few demonic features that he deans cute (black sclera, slit pupils, pointed ears and sharp fangs etc). I imagine they wear light makeup, just enough to accentuate her features.
Beelzebub:
Beel has mostly humanoid features, save for his eyes. Instead of having a pupil and iris, he has one large multi compound pupil. Meaning instead of seeing one large image he sees thousands of tiny images, like a fly. Because of this I imagine he’s short sighted, and colour blind. However he is amazing at noticing form movement. Again much like a fly. Also my friend HCs him as a light skin black man so I do as well :).
Belphagor:
Belphie I wanted to make slightly more intimidating. I wanted to make him look gaunt and sickly, experiencing pallor, and with his eyes more deep-set. I also imagine his eyes have a spiral in them, one that if you stare into to long you can’t help but sleep. Also again, same friend HCs him as black so I do as well lol. Shout out to my boy Kris.
The Rest of the Casts eyes are coming soon. But for now we have the brothers!! Lemme know your HCs and who knows maybe I might take them on board lol.
Don't have the energy for a full post on this but the way everyone just ignores the harms of the parentification Lucifer was/is put through really bothers me.
Parentified older sibling is a well known type of abuse that affects the person being parentified pretty much their whole life because a lot of how it manifests gets praised by outsiders. And even if you go to therapy for it it's a fuck ton of things to unlearn because it gets tangled into all aspects of your life.
"Oh you're such a good sibling for taking care of(parenting)your siblings!" <-abuse and neglect
"Of course it's your job to protect your siblings, you're the oldest!(we don't talk about the self destructive patterns this can manifest if not pushed back on)" <-abuse and sets someone up to destroy themselves for others which isn't healthy no matter how interesting a narrative device it is in writing
There's more but like I said no spoons. You can find resources on this by looking up "Parentification" or "Parentified Older Sibling/Brother/Sister"
Hi! First of all, i love your headcanons, they are amazing and you have a lot of creativity!
And now, if you have requests i was wondering of you could make some HC with the characters with a visual impaired MC please?
Of course, sides included! I had to go look up the cane colours for this.
Lucifer, Diavolo, and Barbatos already had some accommodations prepared. Brail at RAD is standard since there are many magical accidents and otherwise that leave Demons temporarily blind.
Diavolo has many questions about blindness canes. The Devildom has adopted brail, audiobooks, and accommodations for service dogs, but they don't really have the canes yet.
Satan will read books out loud to Mc since the Library is still missing some books in brail.
Belphegor put a knife on the end of Mc's cane. It's normal white cane until the button on the top ejects the knife on the bottom.
Barbatos is the absolute best at telling Mc where something is in proportion to themselves.
Mammon is horrible at telling Mc where things are. He'll warn them of a pole but won't say where specifically. He does move them away from the pole, but Mc won't know where it was.
Beel likes helping Mc around the kitchen. Utensils, dishware, and cookware are constantly moving places so it saves them the time of feeling their way through it.
Asmodeus noticed several makeup companies don't put brail on their products and decided there should be a change in that.
Solomon added little plaques to purgatory hall for when Mc was first getting around.
Simeon and Luke bring a lot of ingredients from the Celestial Realm for Mc to touch and eat since they can't really see but touch and taste are still on the table.
Mammon likes when Mc touches his face, it makes him very happy when Mc does their version of "seeing" him.
Leviathan has a few shows he likes that have light novels that can be read about to Mc so he can connect with them over something.
Lucifer gets all of Mc's textbooks in brail and has an audiobook version of them depending on Mc's preference.
Mephistopheles lets Mc borrow his cane sometimes if they don't have theirs on hand.
Solomon makes sure to set out all the ingredients before lessons and ensures Mc can identify them by feel.
Barbatos and Diavolo always accompany Mc in the palace because it's so easy to get lost in regardless of visual ability and lack thereof.
Thirteen gets Mc a fancy little clock. It looks like an analog clock but pressing a button on the top will give Mc the time, date, and if there is a national holiday or a birthday.
Mammon, Belphegor, and Solomon will make the most blindness jokes, particularly if Mc says to tell them something they don't know they'll tell Mc the location of something nearby.
Satan writes Mc letters in brail so they can participate in being a pen pal.
three people, all around the same time. The people know what they want and they want Mammon. Not to mention that all three are family related, two being for daddy Mammon.
three people, all around the same time. The people know what they want and they want Mammon. Not to mention that all three are family related, two being for daddy Mammon.
Yeah, more stuff. A few of these are my theories but that's what these kinds of HCs are for.
There is a grandfather clock in the House of Lamentation that continues to return every time the brothers try to throw it out or accidentally destroy it.
RAD is completely free with the exception of certain clubs and it is illegal for any schooling to be tuition based. This is to prevent a discrimination in the education of the rich and the poor since the rich are forced to invest in this academy which everyone shares so their own children can have good education or send their children to a far away boarding school.
Demons actually respect the wishes of authors so there is not a bug on the cover of metamorphosis nor is there a girl on the cover of Lolita in Devildom copies. Satan can be thanked for this because the House of Lords just wanted whatever humans were doing with the covers.
Demons have regular events including extended family while angels are usually limited to the immediate family that they were assigned, Mammon hated this because he had to stay with Micheal for events until his transfer to Lucifer's "faction" passed through.
It is a tradition in heaven for factions to have the same first letter in their names. For example; Lucifer, Leviathan, Lilith. This made Lucifer's faction unique since he picked up the ones not doing well in other places. Luke is Micheal's but other angels say Luke was supposed to go to Lucifer due to lettering, some even suspect Luke was traded before creation so Lucifer could have Mammon without Micheal losing the important task of raising a new angel.
Heaven, particularly Micheal, is still actively trying to reclaim Lucifer. Lucifer was their most powerful angel and he took the others who were also powerhouses leaving a huge pit of what Lucifer used to take care of. This is not even mentioning how the brothers only took one casualty while heaven may have lost 1/3 of their population assuming the OM lore matches bible canon. While heaven can throw around war threats, they cannot act on anything solely because of how weak they have become and this is why nothing happened when Micheal threatened war in NB.
The Devildom is technically an empire assuming the vampire territories are apart of the Devildom, the only reason Diavolo hasn't raised their official status yet is to not scare the angels away from his peace plan. It makes Diavolo seem humble and willing to compromise a little, he's willing to wait.
The angels did have their own version of the crusades to claim the Devildom and "eradicate evil" in the name of their father, the demon population was almost entirely wiped out. This is why anti angel sentiment was such a big issue when the brothers fell and Lucifer probably gave a public apology since he would have been a huge participant as Father's favourite and possibly stole the sun. The brothers participated in lots of community service to change public opinion and they still do since they cause so much destruction.
The Eden catastrophe still comes up every few centuries when people remember that Diavolo's father tried to help Eve get a divorce after Barbatos gave her the apple. Diavolo hates having to do press releases every time this comes up.
There are mass arguments on Devil reddit over what Mc would be the avatar of, the most popular is currently avatar of chaos but occasionally something else comes to challenge it.
In my defense I have the most embarrassingly short temper to ever exist and Lucifer and Satan REALLY annoyed me while playing Obey Me today. My apologies, WILL happen again. 🫡🙏
Misophoniac Lucifer??? I feel it could fit him, granted idk
Lucifer would just fucking die. I think there can be multiple triggers and The brothers would hit all of them. It's like having a table of buttons in his brain that signal danger and the brothers get up on the table and roll across all the buttons, which they do even if he doesn't have Misophonia. If I was going to pick a specific sound, he'd get triggered by the wind. It reminds of falling, reaching towards Lilith but not being quick enough. Now let me list the noises the brothers make that would make Lucifer crash out at least six times a day on top of his "don't do that" crash outs just to put it in perspective since he'd hear these every day.
Beel chewing
Belphie snoring
Mammon's coins clinking
Leviathan's computer fan
the leaky faucet satan breaks at least once a week that they never fixed
Asmo's camera shutter
Asmo's bag keychains
Leviathan's bag keychains
Satan turning the pages in his book
Text notifications from Diavolo
Text notifications from Simeon
Asmo's very loud social media notifications
Leviathan's game notifications
the cursed grandfather clock that they can't get rid of because it always comes back or repairs itself overnight.
Satan clicking a pen
Leviathan tapping the table
Mammon bouncing his leg
Calls from Diavolo
Calls from a very confused Simeon
Literally anything fragile getting broken
A call from Solomon's new number because he wants a pact despite being blocked on everything.
Cerberus whining because the brothers were too scared to feed him.
As you can see, Lucifer hears a lot of noises in one day so he would just be extra miserable all the time. Devil have mercy on our traumatized (and maybe autistic) single mother of eight (mc and diavolo included).