Archive of Our Own

Lucifer

• Fancy pens
• Sometimes you want a special pen to write your exams. If your answers aren’t good, at least the ink looks beautiful.
• Also it’s so much easier to write when the pen is gliding over the pages.
• And where do you get the perfect pens? Lucifer’s study of course.
• That man has way too many pens and he doesn’t even notice that you borrow some for your exams or essays. Especially because you always return them.
• You only get caught when Lucifer looks over one of your reports and recognizes the ink. He also had just searched for that certain pen to sign a document and had already wanted to accuse Mammon of stealing it.
• He will scold you for taking his pens without asking but will give you permission to keep on using them.
• Please just ask him, so that you don’t take a cursed one by accident.
• Diavolo would not be amused if the exchange student got killed by a pen.

Mammon

• Sunglasses
• Mammon owns way too many sunglasses.
• The first time you borrow one, is very early in your exchange year. The brothers warned you that it would be a hot day, so you wanted to take sunglasses with you.
• You, however, didn’t find yours, so you just took one of Mammon’s.
• You had been so stressed out that you completely forgot that the Devildom doesn’t have a sun.
• The glasses still look good on you, though.
• After the incident you keep on taking a different pair from Mammon, either to spice your outfit up or just to have something that reminds you of the human world with you.
• It takes Mammon surprisingly long to notice.
• When he does, he gets extremely embarrassed.
• “Oi, human, those are mine, aren’t they?”
• When you offer to give them back, he waves you off.
• “Nah, you can keep them on, they look better on you, anyway. Just be glad I don’t charge you rent!”

Leviathan

• Crafting materials
• The first time you need some glue is for a school project.
• Levi isn’t in his room, you are running out of time and Lucifer is already breathing down your neck, so you start your search.
• You don’t only find glue but also different fabrics, a sewing machine, glitter, colored paper, wire, foam rubber and many other crafting materials.
• You already knew that Levi likes to make cosplays, however, you never thought he would hoard so many materials in his room.
• You don’t even get to steal something a second time because Levi catches you as you try.
• You had waited forever for him to leave his room, to steal some tape. 
• Could you have asked? Yes, but where was the fun in that?
• The poor guy is just confused.
• You could have asked him? Why did you sneak into his room like a ninja?
• As your best friend, he will of course lend you his supplies, even for free!

Satan

• Learning materials
• Satan is extremely clever and an amazing student.
• He’s always prepared for exams and actually studies for them, unlike most of his brothers.
• He writes summaries with all the important information and his flashcards are nicely designed and cover all the topics.
• When your first midterm exams are coming up and you are panicking, you find one of his summaries by accident in the library.
• His summary explains the material better than the teachers, so you use it for your studies and return it to Satan in the evening.
• Every time you struggle with a certain topic, you sneak into Satan’s room and take his summary or flash cards.
• Honestly, without his involuntary help you would have never passed any exams.
• You thought about thanking him but admitting to the avatar of wrath that you stole his learning materials probably wasn’t a good idea.
• Even if he liked you more than his brothers.
• So you just hug him whenever you get a good grade.
• Satan is, of course, absolutely aware of what you are doing.
• However, he knows how hard it can be to ask for help, so he creates summaries and flash cards just for you and leaves them out in the open.
• Seeing you happy about your grades and receiving a hug is more than enough of a reward for him.

Asmodeus

• Shampoo
• There is just something special in Devildom-Shampoo that makes your skin softer and your hair healthier.
• The first time you “borrow” some of Asmo’s shampoo, you just had run out of your own and sneaked into his bathroom. He had so many of them, surely he wouldn’t notice if you took one for a quick shower, right?
• He didn’t and you got addicted.
• It soon became a practice that before your shower, you would go to Asmo’s room, check if he was there and if he wasn’t, you would choose a bottle and make your way back. After the shower you would sometimes return it or keep it, if you really liked the smell.
• Asmo notices when he realizes that you smell the same.
• Oh boy, is he happy about it.He won’t be able to fawn over you and your hair.
• “Darling, I knew something had changed. You look stunning my dear!”
• After finding out, he will start buying shampoos for your hair type and leave them out in the open, so that you’ll find them easily.
• He loves buying different fragrance and see if you like them enough to keep them.
• He just adores you and the little game you two play.

Beelzebub

• His jacket
• Beel’s jacket just looks so comfy. Who doesn’t want to wear it? And no matter your size, it’s still far too big on you.
• Stealing it is easy. You just have to wait until he goes to the gym, sneak into his room and pick the jacket up.
• When Beel notices that his clothes are missing, he’s a bit confused but not really annoyed. As soon as he sees you with his hoodie, he actually gets really happy.
• You just look cute in it and it makes him proud that of all his brothers you chose him to steal cloths from.
• When you keep on taking the hoodie, Beel will actually start to just drop it off in your room when he goes to the gym.
• He might try to buy you your own jacket, however, he’ll quickly realize that you want his.
• Beel just loves the entire situation, okay?

Belphegor

• His pillow
• Let’s be honest, we all want to take a nap on his pillow.
• Only problem, he always carries it with him, so stealing it proves to be quite a feast.
• Luckily for you, when Belphie sleeps, you are able to replace it with another one.
• The first time Belphie can’t find his treasure, he suspects Mammon but after tearing through his room, the pillow shows up again on his bed.
• The demon is confused but hey, at least it’s back.
• Except, a week later, it’s missing again. Someone must have stolen it while he was asleep.
• Belphie is honestly getting annoyed now. He doesn’t like it when people mess with his stuff, especially his pillow.
• You, on the other hand, have never slept so well. The pillow is perfectly fluffy and you always have nice dreams when you use it.
• Sadly you can only use it for short naps because you don’t want to get caught by Belphie.
• One day you forget to set your alarm clock and instead of a short nap, you sleep the entire afternoon. As a result of your mistake, aren’t able to return the pillow in time and Belphie finds you.
• He’s still a bit annoyed that you stole his pillow but honestly, he just can’t be mad at you.
• He’ll even allow you to use the pillow if you ask. However, only if he can use you as a pillow in return.