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Published:
2025-02-11
Updated:
2026-02-19
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9,965
Chapters:
5/?
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Are we brothers in every universe? (I hope so)

Summary:

Mammon kinda dies and gets reborn into the human realm!!!(he also goes into the human exchange program LMAOOOO)

Lucifer is suprised, Levi is uh you'll see, Satan doesn't know shit, Asmodeus is panicking, Beel is crying and Belphie was uhhh :/

Notes:

The demons told me to write this!!!! (I hope you all enjoy this)

Also english is not my native language sorry!!!

(See the end of the work for more notes.)

Chapter Text

 

 

It was 2 weeks already...2 weeks since Lilith died she was the youngest sibling out of all of them so this death hit them hard especially Lucifer. He locked himself in his room and overworked himself till he either passed out or Mammon dragged him out, the other brothers were not much better Levi was also shutting himself out constantly needing to be alone, Asmodeus on the other hand always needed to be around people he would party almost everyday and it made Mammon worried to no end, the only siblings that were normal in a way were Beelzebub and Belphie one needed a lot of food and the other just slept a lot so Mammon was easily able to keep them in check... Though Beelzebub was harder since he needed a lot of food but Mammon still persistent. 

 

The only thing he forgot to mention was he had a baby brother now, Satan he was a angry and spiteful child but at the end of the day he was a child and Mammon couldn't blame the poor boy he was immediately abandoned by his father Lucifer and his other brothers hated him... Well not Including Mammon and Asmodeus. 

 

Currently Mammon was out he needed to get some last minute shopping done he had a list of things he HAD to buy he was trying so hard to control his greed but it wasn't working and Mammon walked out the store with only 3 things he needed from the whole list-but he did buy stuff he didn't need but he would sell it so maybe he did need it?-. Mammon sighed slightly he felt tired but he needed to get home safely so he walked albit it slowly. 

 

Suddenly he heard yelling and Mammon was curious about what was happening so he walked towards the crowd and he felt someone run past him and then a gunshot was heard. Now while yes Mammon was in hell he still wasn't use to all the violence so he stepped back and suddenly he felt a pain a pain so twisted he let out a sharp gasp, he glanced down at where the pain was and he saw blood seeping out his chest strangely close to his heart and Mammon was confused he thought demons were supposed to be stronger but then he noticed the bullet, it was from a illegally obtained angelic weapon. 

 

Mammon covered his wound and he gasped for air the pain was overbearing it wasn't like anything Mammon was used to he turned around to run away but his knees buckled and he fell down on his knees as he used the wall as support. 

Mammon glanced at the crowd and everyone was running away they didn't want to be blamed for a death they didn't cause so Mammon was alone he felt his eyes growing heavy as he let out shallow breaths he glanced at the discarded bag of groceries and other things he bought Mammon frowned as he thought 'Beel will be mad for food going to waste' finally Mammon closed his eyes and his breathing stopped . 

Ah he died. 

 

He died before he got to see Lucifer be happy and proud

Before Levi finally got confident in himself

Before Satan grew up and become a strong demon

Before Asmodeus was in a relationship

Before Beelzebub was full and happy

Before Belphie got a fully rested sleep 

 

He died before he got to see his brothers heal... Ah he let them down once again. 

 

 

 

Lucifer was wide awake in his office he was tired from all the documents he finished and don't even get him started on the ones he has yet to start, but suddenly he heard knocking on his door he got up to open the door and there he saw Asmodeus standing there looking nervous he raised an eyebrow "What is it Asmodeus I'm busy" he asked and Asmo quickly answered "Some demon wants to talk with you she says it's urgent" Lucifer nodded before walking over to the front door as soon as he opened the door the women on the other side started talking "i-I'm sorry to bother you s-sir Lucifer but u-uh someone has found y-your brother passed out bleeding... Uh they called an ambulance but they told us to inform y-you or a parent s-so uh... " as the woman continued talking Lucifer zoned her out as the words Mammon and bleeding were they only things he heard he quietly thanked her for informing him and he closed the door. He went over to Levi's room and he knocked on his door after no answer Lucifer snapped and said "Leviathan if you don't open this door I'm going to hang you from the ceiling." quickly he saw the door open "H-ha Lucifer! What do you need? " Levi asked clutching the door in fear Lucifer only rolled his eyes "I'm going out so your in charge" Levi's eyes widen "But what about Mammon? And where are you going" Lucifer's eyes narrowed "it's about Mammon so I need to leave as soon as possible now I hope there aren't any more complaints" Levi nodded though his eyebrows furrowed "a-alright but uh tell Mammon to get back soon he told he would watch this show with me and I'm holding him up on his word" Lucifer nodded as he turned around and quietly left the house. 

 

As he left the house he quickly got to the hospital when he walked to the front desk he just said "Where is Mammon's room? " the lady quickly looked up and flinched back "GAH- ah sir uh Mammon is not able to have visitors as he is going under surgery" Lucifer raised an eyebrow "What do you mean surgery? " The women glanced at the papers in front of her "Well he was shot so the doctors recommended surgery to get the bullet out we hope it goes well... " Lucifer nodded "Am I able to wait here until the surgery is done?" The lady nodded "of course though the surgery is 2 hours long so I don't think you should wait-" Lucifer just went over and sat down on one of the waiting room chairs. 

 

As time passes by Lucifer was getting more and more anxious he had no idea Mammon was even shot since nobody told him anything! And he isn't sure if the surgery will succeed but Lucifer trusts the doctors, Lucifer also notified Levi that he won't be back until later on so he and his brothers should just eat dinner and sleep without him and Mammon present. 

 

After the 2 hours was over Lucifer sat there waiting for a doctor to come and say his brother was okay but... The doctors they looked disappointed and they looked at him with such pity, Lucifer was confused he looked at them with a slighty hopefully look but then the doctor said "I'm sorry sir but your brother didn't make it... We were able to pull out the bullet but the blood lose and wound was to much for his body and he passed away" 

 

Lucifer's world stopped for a second he looked at the doctor and then at the ground hoping this was a sick and twisted joke but no... It was his horrible reality his brother died... His star died and he died alone, Lucifer felt tears well up in his eyes he let out a shaky breath as he got up he heard doctor say something like "Sir where are you-" but it was muffled in Lucifer's ears as he just left he wasn't sure how he got back to his home quickly but he did. As soon as he walked in he noticed it was quiet and dark Lucifer felt tears rolling down his face as he walked to his room he quickly shut the door and he fell in his chair breathing heavily he wasn't sure when breathing became so hard but he felt out of breath, he was trying to wipe away the tears but they kept coming and he couldn't stop it he also felt his chest tighten he was crying out his soul as two of his most precious siblings have died 'Lillith and Mammon'.... Lucifer wasn't even sure how to tell the other four about this news they haven't even healed from Lillith what can he say about Mammon? 

 

The next day came and Lucifer still hasn't processed the news his day was tiring and he just couldn't keep up with his work but he had to do it. Suddenly in the middle of work he heard someone knocking on the door he thought maybe it was Mammon? Maybe just maybe he was alive? 'Please' Lucifer thought as he opened the door there he saw.... Levi he felt his hope disappear suddenly though, Levi asked "Where's Mammon? Is he here with you or?" Lucifer shook his head "No... Mammon he's... Dead" as Lucifer said that he swore someone could drop a pin with how quiet it was. Levi smiles shaking his head "haha... No-not funny Lucifer where the hell is Mammon! " Levi asked getting more heated Lucifer said again that Mammon was dead and Levi started crying slightly wiping his face aggressively in saddens and frustration "S-Shut up! Shut up! Don't lie! Mammon h-he couldn't die he-he wouldn't leave us! H-he promised! " Levi yelled out in tears Lucifer just stood there not saying anything after a while Lucifer just closed his door and locked himself in his room, though Levi was still crying. 

 

As Levi was in tears Belphie and Beel walked out their room and noticed him crying they quickly ran over -well Beel did- and he asked "Levi what's wrong-" as soon as he said that Levi snapped back "N-nothing! " Belphie lightly hit Levi with his pillow "your crying tell us what's wrong... " as he mumbled that Levi said quietly "Mammon is dead... " The twins were taken aback and Beel said "what-? " and Levi said louder "Mammon is dead" Beel stood there frozen as Belphie shook his head "What- no how do you know! Who told you that!? " he yelled out and Levi pointed at Lucifer's door "He left yesterday cause something happened to Mammon and then he told me just now that Mammon is dead... " Belphie stood there shaking as he turned around and walked back in his room slamming the door shut Beel following in a few seconds later. Levi got up and walked over to Mammon's room he opened the door and he felt tears building up again he walked over and laid on his bed as he laid there he imagined Mammon laying with him softly petting his hair Levi silently cried. 

 

 

Asmodeus was back from a late night party he was sober which was a suprise so he went over to the kitchen to get some food but while he was checking for food in the fridge he suddenly noticed the lack of Mammon... Now Mammon wasn't a early bird but he knew Mammon would be awake by now to take care of Satan so Asmodeus walked in Satan's room and lo and behold Mammon wasn't there Satan was a asleep so that's good and Asmodeus left quietly not wanting to wake the baby up he quietly walked over to Mammon's room fully expecting him to be there but... Levi was in his room crying? Asmodeus knocked on the door hoping to catch Levi's attention and he did just that, Levi sat up and Asmo asked "What's wrong? " Levi mumbled something and Asmo said "What? I didn't hear you? " and Levi said firmly "Mammon is dead Lucifer told me. " Asmo stumbled back surprised "wh-what...? How-what happened!? " Asmo asked feeling slightly scared, Levi only shrugged "Lucifer didn't tell me the details he just told me Mammon is dead" As Asmo heard that he turned around and left storming off to his room crying his heart out until..... He heard Satan wake up crying Asmo didn't want to deal with Satan but he had no choice no one cared for Satan except for himself and Mammon but Mammon's dead so Asmo had to take care of him, as he entered Satan's room he took the child in his arms and hummed a quiet lullaby... The lullaby being the one Mammon sang to him. 

 

 

 

 

 

 

"What!!! Mama why is he so small! " the little girl with red hair asked, the mother smiled "ah dear he's just a baby so of course he will be small just like you were" the girl's eyes widen as she smiled "he's so cute and small!! " as she shouted that out she felt her father smack the back of her head softly "Lillith quiet or else you'll wake the baby up" the girl pouted as she crossed her arms "hmph" the mother laughed softly "It's alright dear I don't think he will wake up that easily unless he picks it up from you" the man blushed feeling embarrassed as he looked away a Doctor walked in "Ahem hello Ma'am we are here to say your child is healthy" the women nodded the doctor continues "Ah we also wanted to ask for the name of the child one last time just for conformation" the women smiled as she held the child closer "Of course his name is Mammon do you need anything else or? " the doctor simply shook his head as he left the room after writing something down. 

 

 

 

 

 

 

As the women was finally let out the hospital she rested in her house a bit more letting her husband take care of the kids. 

 

Lillith played with the baby and also hugged him a lot "ahaha your so soft! No wonder your always sad I would be sad as well if my body was mushy" the father rolled his eyes jokingly "you were also mushy lillith" the girl gasped as she hugged the baby closer surprisingly the baby didn't mind"really!? " the father nodded the girl looked at the baby "aahhh! Were the same maybe you can be just like big sis lily! " the baby said something incomprehensible as the baby smiled the girl smiled "Yeah! " the father chuckled as he took his phone out to record and show his wife later. 

 

(After she saw the video she cried happily) 

 

 

 

 

 

 

 

 

"LILLITH BRING ME BACK MY PHONE! " 

 

"BLEHH NOO!!"

"Lillith dear give Mammon  his phone back"

"Ugh fine but only cuz mom said so"

The girl hands back Mammon his phone

"You could have broken it! Geez your such a bitc-UHHHHH" the women was giving mammon a hard glare daring him to continue what he was about to say but since Mammon liked living he didn't. 

"Whatever I'm going back to my room and don't you dare steal anything from the fridge I was hoping to make lunch for us"

The girl nodded and then aggressively ruffles Mammon's hair and then ran off. 

Mammon rolled his eyes as he went back to his room he sat down on his bed and started going through his phone, while going through it he sneezed and suddenly he saw a bright white light and he squeezed his eyes shut in shock

"GAH-!? " he yelps out he flinched back but suddenly he fell on his ass instead of on his bed as he quickly opened his eyes he saw a man? 

 

 

Where the hell is MAMMON!? he saw a man with red hair standing over him with a smile 

"Hello there! I'm Diavolo care to share your name? " the man held out a hand to help mammon up, mammon didn't take it and just stood up by himself as he glanced around he yelled "where the hell am I!? " the man laughed "well your in hell" Mammon's eyes widened "EHH!? I DIED!? " the man shook his head "ahaha-! No no your still alive it's just were doing a exchange program with heaven and earth we have 2 angels and 2 humans here"

Mammon nodded still nervous "a-alright how long am I here? " 

"2 years" 

Mammon nodded 2 months- WAIT 2 YEARS!? 

"2 YEARS?? " 

"Time is slightly faster here so don't worry this won't be long" a blue haired man intervened and Mammon stepped back

"Gah fine... Uh I'm Mammon by the way..." Diavolos eyes widen but quickly went back to it's natural look as he glanced at the blue haired man whispering something. 

 

While Mammon stood there awkwardly he heard a door open near by he quickly turned around and there stood five guys the leader of the group had black hair and red eyes jeez he looked scary as fuck- 

 

"I'm so sorry we are late Dia-" the black haired man cut himself off as he looked at Mammon with a bewildered look. 

 

"Ah Lucifer just in time! The human here has arrived! "

Mammon waved still nervous

"Uh hey My name is uh Mammon"

The other four guys next to Lucifer also looked surprised well except one... I mean he was surprised for a different reason so..? 

 

"Ahem.... Nice to meet you Mammon... I'm Lucifer the avatar of pride" Lucifer held his hand out for Mammon to shake it and Mammon hesitantly did so.