Type of Brother-in-Law & Uncle
Prompt: May I ask for a hc for OM! demon brothers (except Mammon) as brothers-in-law (and uncles) in situation where MC and Mammon got married and decided to stay in HoL. And (if you are comfortable with this part) they have two kids – twins, who very much resemble Mammon in their behavior.
Gender: fem!Reader
A/N: Implied Mammon x reader.
Brother-in-Law
- Lucifer backs away the moment Mammon tells him he loves you and wants to get married to you. Sure, it hurts his pride that he lost you to one of his brothers, but if you and Mammon are happy, Luci will bandage his wounded pride and move on.
- He is a caring brother-in-law who always looks out for you and takes your side. If you and Mammon ever get into an argument, Lucifer will always side with you. Not only because he knows you are right but also to get “revenge” on his brother for taking you away from him.
- Will always lend an ear whenever you need to talk or rant about anything, especially about Mammon. Lucifer knows his brother well and can give you the perfect advice on how to tackle anything related to the Avatar of Greed.
Uncle
- Ah, great. Two more Mammon means more trouble and triple the pranks, but Lucifer loves them just as much, if not more, than Mammon. There’s just something about their innocent smiles that makes his hardened heart melt.
- He would be the father-type uncle, meaning he treats the twins like his own kids.
- Whenever you need a babysitter, Lucifer is more than willing to look after them. You can rest assured as your kids are in more than capable hands – in fact, Lucifer prefers you let him babysit the kids over his brothers.
- Spoils them enough to where they are happy, but Lucifer doesn’t spoil them rotten. If he catches any of his brothers spoiling the twins beyond need, he will give them an earful plus a punishment or two.
- Sometimes, when you walk into Lucifer’s room or study, you will find him in his demon form with the twins snuggled to his side, his wings wrapped around them. Turns out, the kids really like Lucifer’s soft wings, and cuddling up to the smooth feathers relaxes them.
Brother-in-Law
- Satan was not happy about letting Mammon, of all people, take you away from him, but for your sake, he backed away. At least you are staying in the House of Lamentation – it’s not like he lost you forever.
- After your marriage, he treats you more like a close friend, and his way of interacting with you remains the same as before, minus the flirting, of course. Though, when Satan wants to get back at Mammon for something, he openly flirts with you in front of his brother, but out of respect, he lets you know beforehand that he’s only flirting to get revenge on Mammon.
- Somewhere inside his heart, Satan still hasn’t fully forgiven the Avatar of Greed for taking you away from him. Why Mammon out of all the brothers? He’s usually the unlucky one, so how did he end up with you?
Uncle
- Finally, two others in the House of Lamentation who are younger than him. Satan absolutely adores the twins and tries to spend as much time with them as he can.
- Loves to read books to them and wants them to get into a habit of reading so they are knowledgeable. Satan also helps them with their homework/studying for tests and acts as their tutor.
- He worries about them when they’re not around. Doesn’t let the kids into his bedroom due to his fear of them trying to climb his books and getting hurt or worse. He even has nightmares about it.
- However, his worst nightmare involves the twins seeing his wrath and being scared of him. Satan tries his best to control his anger whenever they are around, and if they ever get scared of him, Satan won’t be able to live with himself.
Brother-in-Law
- Levi can’t get over you choosing Mammon – what exactly do you see in the Avatar of Greed? Though he knows it’s too late to do anything, since you’re married and all, Levi will never be able to forgive his brother for taking you – the only person who understands him – away from him.
- It takes Levi a long time to accept that you are Mammon’s forever, and he returns to being the otaku who never comes out of his room. Months after your marriage, he starts to accept his defeat and slowly returns to interacting with everyone, including you.
- He refuses to see you as a sister even if the “in-law” tag is attached. You are his friend and friend only.
Uncle
- Levi loves the twins more than anyone or anything. Unlike the grown-ups, the kids don’t judge him or make fun of him and want to actually spend time with him. They really make him happy.
- He’s the type of chill uncle who lets the kids watch cartoons/anime and play games for as long as they want, and the twins love Levi for that. During the weekends, they always sneak into his room to spend time with him.
- He likes making them customized outfits, specifically cute anime outfits. If the twins have favorite anime characters, you can be sure Levi will make all the clothes those characters wear.
- When Levi isn’t gaming or watching anime, he is making/designing outfits for the twins, looking for kid-friendly games, and buying them their favorite toys. He recently brought an air mattress for the twins in case they ever want to have a sleepover in his room.
Brother-in-Law
- Beel is the only one who starts seeing you as a sister after you get married to Mammon. He respects your boundaries and refuses to do anything that would upset Mammon – his brother finally found happiness, and Beel will not ruin it.
- If he sees any of his brothers trying to come between you and Mammon or trying to ruin your marriage, Beel will get upset and do everything in his power to stop them.
- It’s hard for him to understand why some of his brothers can’t accept that you are now with Mammon, and they don’t stand a chance with you.
Uncle
- Beel was the happiest when he learned Mammon had twins! He felt a special connection to them.
- He cares about them just as much as he cares about Mammon, if not more.
- Will get the kids whatever they want to eat, even if he’s not supposed to. Food makes the kids happy, and nothing matters to Beel more than their smiles.
- He uses the kids as dumbbells and enjoys listening to their squeals and giggles. One of his favorite things to do is to carry the twins on his shoulders so they don’t have to walk and can get a higher view of the world around them.
- Beel acts like their personal bodyguard and protects them to no end. NO ONE can hurt the twins and get away with it.
- He doesn’t know much about kids, but Beel is willing to learn just so he can take proper care of his nieces/nephews.
Brother-in-Law
- Belphie wouldn’t accept your marriage with Mammon for the longest time. How did the brother, who everyone looked down on, manage to steal your heart?
- After your marriage, he distances himself from everyone and spends time napping in the attic. He knows he will have to accept the truth sooner or later, but losing you is too much for him.
- Eventually, with Beel’s help, Belphie gives in and decides to move on, but like some of the others, he can’t accept you as a sister-in-law; he refuses to refer to the woman he loves as a sister. Though he accepts the marriage, Belphie can’t bring himself to behave the same way as before and still maintains somewhat of a distance from you.
- When you and Mammon get into arguments, Belphie feels a little better. He knows it’s not the right thing to do, but he doesn’t know any other way to cope with the situation he is in. All of this changes once the twins are born, and Belphie turns to the kids as a means of coping with his pain.
Uncle
- Like Beel, Belphie feels a special connection to the twins and loves them unconditionally. He doesn’t mind one bit that they’re like Mammon and finds their prankster side cute, but if Mammon tried to pull the same pranks, Belphie would be far from happy.
- He loves loves LOVES taking naps with them, and you can be sure that when the twins are sleepy, they will be with Belphie in the attic room, snuggled up to him, fast asleep.
- When the twins were babies, Belphie loved to turn into his demon form and swat his fluffy tail above their cribs just to hear their laughter. It’s one of his favorite memories of the kids.
- Sometimes, when your kids are missing during the night, check Beel/Belphie’s room. You will find one of the kids snuggled up to Belphie while the other is using Beel as a mattress.
Brother-in-Law
- Asmo doesn’t care if you’re married to Mammon. He is still going to flirt with you and shower you with compliments. Of course, he will not say or do anything to make you uncomfortable, nor will he cross any limits. Like Levi, he can’t and won’t see you as a sister, even if it’s “sister-in-law.”
- Part of him ships you with Mammon and thinks the two of you make a cute couple, but the other part of him can’t believe you chose Mammon. What does the Avatar of Greed have that he doesn’t? In his opinion, he’s far more charming, better looking, and well-mannered compared to the second brother.
- Asmo gets jealous when he sees you and your husband getting all lovey-dovey but still says, “Awww, how cute.” Then he glares at Mammon and tells you two to get a room.
- Deep inside his heart, the Avatar of Lust is deeply wounded to lose to Mammon once again. First, all the modeling gigs, and now, you.
Uncle
- He doesn’t mind one bit if the kids are like Mammon and spoils the kids like there is no tomorrow. If they want something and ask him for it, he will get it for them, no questions asked.
- Asmo encourages your kids to watch their eating habits and take care of their appearance. It never hurts to develop good eating and skin care habits at a young age.
- On family nights, when the entire House of Lamentation is spending time together, he will dress the kids up and put on a fashion show for all of you. Who knows, maybe your kids will take an interest in modeling.
- Will try to convince you and Mammon to let your kids model with him and get featured in Devildom fashion magazines.
- If the twins do anything and get into trouble, Asmo will always be the first one to step forward and remind you, “They’re just kids, so don’t be hard on them.”