Past Sins AU: mother midnight

by Crimson_EXE

Rating: mature
Tags: Violence, Princess Celestia, Sex, Fallout, Profanity, Slice of Life, My Little Pony: Friendship is Magic, Dark, Alternate Universe, Human, Main 6, Princess Luna, Original Character
Length: 1767

A 18 year old girl finds out that her mother was a evil nightmare that was banished from her home world

A 18 year old girl named midnight Ruby found out her mother named fire Ruby was once a evil nightmare who was banished from her home world, both midnight and her mom find themselves transformed back into their equestrian form and with the help of a certain Lord of Chaos find themselves back home in the castle of the Two Sisters wearing stable-tec suits and wielding Pip-bucks. meanwhile Cultus known as the children of nightmare are working hard to revive the night Queen Nightmare Moon.

My Little Pony is owned by Hasbro and The Fallout series is owned by Bethesda andPast sins is owned by Pen Stroke

My character concept comes from Lunar soul by ShadowedKnight68

The fallout side is a bunch of mods from this list in a couple extra mods that I will put below this list
List of the mods:
Combined Arms - Modern Weapon Pack
Restoring The Castle
Created workshop workbench
Movable workshop workbench
Scopes framework
Companion infinite ammo and unbreakable power armor
Fallout Ponified
MLP FoE chems retexture
Console enabled in survival difficulty
Survival mode tweaks - console - fast travel - autosave - others
Unique uniques - unique weapon redone
Get out of my face ( push away Companions and NPCs)
Craftable short flag poles USA and factions
This is MY bed
Wasteland water revival
Vivid Fallout - all in one
Survival options
Survival quick save - No Sleep Till bedtime
Plunder - survival combat overhaul
Sandbag fortifications
.44 automag
M1014 - a standalone shotgun
Mauser Pistol
MP-412 - a standalone revolver
PreWar binoculars
Covadonga's Remington 870 Shotgun (Authorised Re-Upload) and Texture Addon (Obsolete - Legacy - Potential Bugs - Unsupported)
Better mod descriptions
Colonial Uniforms - Minutemen replacer available
Crimsomrider's Unique Furniture
Clean water of the Commonwealth
NorthlandDiggers resources - animals - landscape - Garden and more
Liga of my companions
Liga of my companions - MCM settings menu
Unlimited followers
Military tan paint for all power armors - Standalone paintjob
Craftable ammo
Castle tunnels - settlement and restoration
M1 Garand - a WW II classic
Reimagine 870 shotgun
Crimsomrider's Caps Replacer
Assault carbine and service rifle ( M4A1 and M16A2) 310N retex
Rebuild the castle
Flyable personal vertibird - Paintjob
Flyable personal vertibird
Vertibird faction paint schemes
Vertibird camouflage texture pack
APC home on the move
APC home on the move - patches
Rebuild Starlight Drive-In
The rebuild collection - shared resources
BOS vertibird
Settlement objects expansion pack
Fallout texture overhaul PipBoy ( Pip-Boy) UHD 4K
Cheat terminal
Unlimited dogmeat carry weight
M60 light machinegun
Experience up replace( Fluttershy's yay)
Awesome as I want to be
(CaN-MLP) My Little Pony - mane 6 followers
AER15 modern laser assault rifle
Orphans of the Commonwealth - more children
Orphans of the Commonwealth - vanilla Plus Sim Settlements
Sim settlements - Conqueror
Wasteland Ventures Sim settlements addon pack
Industrial city Sim settlements addon
Proto Vault suit
XXL nukes (nuclear explosions overhaul)
Longer power lines
Build High - extended settlements 5.0
MiniMLP texturemod
Snappy housekit
Resynched Power Armor handling sounds
Dogmeat's backpack
Campsite - simple Wasteland camping (and HD sleeping bags)
Floppy eared dogmeat
Red cattle dogmeat
Immersive water purification
NCA - natural and Atmospheric Commonwealth
Evil Institute HD
Craftable vertibird signal grenades
Collection immersive Maps
Settlement garage sale
Salvage beacons
Craftable animation marker (relaxation furniture)
Craftable animated flagpoles
Additional shop and guard post variants
Optics of Fallout
MLP wild Pegasus retexture
Military power armor skin pack - standalone
Settlement keywords expanded
Unlimited survival mode - F4SE
Fallout 4 script extender (F4SE)
Unlimited companion framework
Realistic pre-war money
Lore-friendly survival chems
Minigun audio overhaul
Laser rifle audio overhaul mod
Glorious .44Magnum sound
Classic geiger counter sounds
Bettervertibirdsounds
Vault 111 security armor
Better female walk
JLaw Character Preset and Slider
Armor and weapon keywords community resource (AWKCR)
Armor Smith extended
Pistol reanimation pack
Fallout 4 weapon reanimation
P.A.M.S - power armor movement sounds
Enhanced blood texture
Ammo retexter
Bullitt counted reload system (BCR)
ITO Institute technology overhaul - weapons
Munitions - Ammo Expansion Project
Roboco patcher
Address library for F4SE plugins
Institutepowerarmor
Confessions of a wasteland Pony radio mod
MLP Pony plushie mod
MLP Pony plushies - standalone (PS even though it says standalone you still need to download the MLP Pony plushie mod to get the textures for this mod)
Tune the radios
Skyfish
Mobile Workshop by skk
Kill tips and hit indicator sound
mod configuration menu
Phase 4 an Institute expansion
CROSS_ courser Strigidae (PS. I didn't put all the required mods to have this one function because the list is super long and I don't want to sit here putting the whole list in so if you want it you're going to have to look it up yourself sorry about that)
Father companion - alternate ending option for Fallout 4
HUDframework
Monkey Depot Institute pistols
Enclave X-02 power armor
Hellfire X-03 power armor
K-1373 - submarine mobile player home
OCDecorator
MLP magic sfx Pip-Boy light sound
Fallout Equestria 4
Pony Raiders and pony settlers unofficial update
CaN mane and tail add-on
Racecustomizer
A-10 Warthog cas
Remote explosives - C4 with detonators and more
M45 laser designator
MLP Blackjack Security Baton retexture
MLP bobblehead mod v1.1
MLP retexter magazine guns and bullets
Pixel's MLP texture pack
(MLP) My Little Pony - interface overhaul project
Orbital strike Cannon - Archiemedes II style weapon for Fallout 4
Looksmenu
(CaN) crimes against nature
Fallout Equestria - main menu replacer
Equestria friendship radio
Increase settler population
Vault-tec security armor - vanilla - CBBE -SHB
Bodyslide and outfit Studio Caliente's Beautiful Bodies Enhancer -CBBE-
New equipment overhaul (NEO) - unofficial patch hub
Realistic weapon sounds
KREBS AK
ACR-W17
Auto doors
Snappy DLC kits
The laser RCW - and energy submachine gun from New Vegas (from scratch)
Steyr AUG A1
Scratchmade - new double barrel shotgun textures
Mauser Family
unofficial Fallout 4 patch - UFO4P
JT music radio [PC]
Stupendium radio [PC]
Wasteland Whalers radio
Craftable Nuka Cola
Super godmeat
Sanctuary doors
pet scorpion
Wasteland resources
Wacky weapons Workshop (complete edition)

P.S. the sex tag is only because it mentions it in the first chapter also I might or might not I still don't know if I'm going to have my characters mention sex more or not

P.S.S. this fic has been switched to the mature tag for use of language not meant for readers under the age of 18

Published 2025-01-18 23:00:01 UTC
Last updated 2025-01-18 23:00:01 UTC

With discord's gift.

Hi my name is midnight Ruby I was a 18 year old girl I wore a dark purple skirt with three stars on the right side that look like the North Star a dress that splits in the middle below the waist of violet and a slightly lighter purple than the skirt I also wore knee-high boots that are the same color as my dress except the bottom of the boot set were a light blue, (So basically just like midnight Sparkle in the Equestria Girls Friendship Games movie except she doesn't have wings or a horn and she is tan skin like your average human from Earth) thought I was a human, I could use dark magic when all other humans can't use magic at all. That is until one day my mother told me what we actually are, it went a little like this.

I walked up to my mom and asked. "Hay mom?"

"Yes honey?" She replied.

"you you said that once I turned 18 you tell me why we have magic of any kind when other people don't and well my birthday was yesterday I'm 18 now so could you tell me please?" I asked after getting my mom's attention.

" oh yes I did say that didn't I, well to answer your question we weren't born humans both of us were born in Equestria and yes I do mean the same Equestria that is on from the show My Little Pony, you have a twin sister at least your sister is a mortal Pony, before the princesses were able to banish me to this world I gave her up to a family in Canterlot." She told me.

I on the other hand am a traditional nightmare the same type of creature from dungeons & dragons

"So basically either an earth pony or a unicorn that has a flaming mane and tail and fetlocks, what about me?" I asked her

"You look like a Ponified midnight Sparkle from the EQG world, but don't worry the Equestria Girls world doesn't actually exist I believe it was just a ploy to sell more toys, oh and I was a Unicorn nightmare." She told me.

"have you ever tried to return to Equestria so you could see her again?" I asked my mom.

"Yes but after meeting your stepfather and realizing it wasn't worth the risk of leaving you and him vulnerable to this worlds government, if they found out that you and me are not actually from this world I don't want to think about what they would do to you two."She told me.

"Okay thanks for telling me Mom I'm going to go in my room and play some video games and listen to some music." I told her.

I was playing a modded version of Fallout 4 listening to the modded radio station Equestrian friendship radio
It was around 12:00 a.m. it started to happen a meteor shower that's when my face, forehead and back started to burn and then finally the rest of my body, it was so intense that I eventually blacked out.

I eventually woke up but then I noticed I felt different like my whole body was different, reading from a fanfics with similarities to this I decide to see what happened, first I checked my hand only to see hooves, my feet suffered the same fate as my hands I felt what I guess we're wings I checked my Ford and found a horn I also noticed my clothes were too loose on me so knowing that ponies don't usually wear clothes I took those off, after checking everything I could see without a mirror I decided to go to the body length mirror near my room closet, it took me awhile for me to figure out how to walk like a quadruped but after like the 100th time falling on my face or ass or would that be flank now, I was able to get to the mirror and it turns out mom was right I do look likea Ponified midnight Sparkle.

That's when I hear a disembodied voice say. " hohoho what do we have here in a Nightmare pony hybrid outside of their own domain what are the chances of finding one here?"

Recognizing the voice I say. "all right I know that's you Discord what do you want?"

That's when Discord popped up out of nowhere and said. "Well if you must know equestion is in need of some help."

"Okay what kind of help?" I asked.

"Well have you read past sins? Discord replied with his own question.

"I've read most of it but not all of it." I answered him.

"Well you see my dear, the universe where I and you and your mother consequently come from is that exact same universe, well maybe not the exact same, there are a few differences like the fact that Celestia will get there a little too late to stop the ritual to bring back Nightmare, that is where I need your help, I need you to stop the ritual before it finishes, I don't care if you stop it at the point that makes it so nothing happens or stop it just in time so Nix does actually appear, just stop it before it finishes, after that I don't care what you do, do whatever you want, just make sure to stop the ritual before it finishes." Discord told me.

I thought a while about it and then said. "Sure but on two conditions, one my parents get to come too, after all I'm pretty sure my mom will be ecstatic to see my twin sister again and my stepfather well mostly so he's safe from the US government since from what I know about Equestria's government they won't kidnap you and try to experiments on if you're an alien or has spent time around aliens for a certain amount of time, oh and since you're probably going to split us up so I'm the one who actually stops the ritual so the second condition is give me and my parents pip-bucks and allow us to use all the mods that I have on the game also the pip-buck will allow us to find each other once I'm done stopping the ritual." I said.

" actually now that you want your parents to come with you, I could send all of you to stop the ritual though I'll probably have to make your father a earth pony since he doesn't know how to use magic or fly, but yeah that could work." Discord told me.

"What about instead of earth pony you turn him into an earth nightmare." I suggested.

"Ooh that's a brilliantly chaotic idea, two full Nightmares and a Nightmare pony hybrid to fight against the Children of nightmare it also seems ironic that two creatures that Nightmare Moon is named after are going to fight them ooh this this is sooo juicy, very well once you tell your parents what we have decided I will send you and them to Equestria along with the items and abilities you ask for." Discord said.

So I head out of my room and head for the stairs but when I get to the stairs I stop and get a little nervous thinking I might trip and fall down the stairs.

I really hope I don't fall down these stairs it's going to hurt a lot I mean I know Alicorns such as myself at least I think I'm still considered an Alicorn even though I'm basically guessing I'm half pony half nightmare but still I hope I have the healing factor of one." I say to myself.

The first three steps nothing happened I went down them normally but on the fourth step I tripped fearing the worst I close my eyes and embraced for impact but when I didn't feel any tumbling or any of that sort of thing I opened my eyes and saw I was hovering, looking back over my shoulder I noticed my wings were flapping.

"Huh Alicorns have the instincts of pegasi I believe and if pegasire anything like birds, then flying can be more of an instinctual thing, explains how baby ponies like pound cake can fly at such a young age."

Getting closer to the ground I finally hear my step dad say. " wow so this is what you look like as an equestrian and I got to say if I were equestrian I would ask you if we could go to bed so we could get it on."

"oh Dad please don't say that I'm is the last thing I need to hear in this predicament on the other hand or I guess hoof if you agree to it you might actually get your wish." I told him

That's when Mom asked. "What do you mean honey?"

And so I told them everything Discord told me and the conditions I said for me to help of course mom agreed because she really wanted to see my twin sister again my stepdad agreed because he thought it would be cool to have both fire powers and earth pony strength.

"all right Discord." I said. " we're ready let's get to equestrian stop these cultists."

"Ooh lovely then let's get started shall we." Discord said appearing out of nowhere.

"All right first let's turn your stepfather into an earth nightmare." He said snapping his fingers doing exactly that."

"Next will give you the right attire since you're using a bunch of Fallout 4 mods which I have looked at I will give you what is essentially a Proto stable Tech suit." Again he said snapping his fingers giving us the suits.

"Next I will give you your pip-buck." Once again Discord said snapping his fingers and lo and behold a pip-buck appeared on each of our four legs.

"And second to last." Discord says while snapping his fingers. "All of the Fallout 4 mods you have brought to life."

"Thanks Discord this will really help us beat the children of nightmare." I thanked him.

"Of course and now to open up a portal to Equestria so you can interrupt this ritual before they can finish it." He said.

He's then he snapped his fingers making a portal appear which both mom and my stepdad hop through and just before I went through myself I turned to Discord and said. " I hope to see you later Discord bye." And I was gone.