Choose-your-own Foal Adventure- Book 1: Nightmare Night

by DuskShadowBrony

Rating: mature
Tags: Other, Nightmare Moon, Princess Luna, Original Character, Comedy, Random, Adventure, My Little Pony: Friendship is Magic, Alternate Universe
Length: 4295

Kindly do not click if you do not like: Age regression/diapers/etc. You have been warned. It's Nightmare Night, and Princess Luna has invited you to the Festival with her. She wants you to dress up as her foal. Will you resist, or go

WARNING/ALERT/DANGER/CAUTION: This story contains age regression/diapers/etc. Please do not continue on if you do not enjoy this.

Rated Mature as per the new story submission rules.

This is a choose-your-own adventure style story. This is not read like a normal story. The plot and ending will be tailored by your choices. It’s very simple to learn this style, if you haven’t done so already. At the end of each section, a few options will be shown to you. You select one of those options, then go to the section marked by the option. Do not read the other sections unless instructed to do so. I understand that it may be difficult to not glance at other sections as you go to the proper one, there’s not much I can do to help on that. Separating it into chapters would only get it messier. Sometimes, there will not be any options, just telling you to go to a certain section. I suggest using Control + F (Find) on your web browser to go to the proper section. Depending on your choices, you will get different endings, although some sections may cross over. Some choice paths can possibly still lead to the same ending. I hope this clears things up. If it does not, I suggest taking a look online for further tutorials. With that said, I hope you enjoy.

It's Nightmare Night, Princess Luna has invited you to the Festival with her, only she wants you to dress up as her foal! Will you resist her, or will you go along with it? It's your choice, this is your adventure! You can get up to eight different endings!

Published 2014-10-31 18:20:09 UTC
Last updated 2014-10-31 18:20:09 UTC

The Story

Author's Note

Holy mother of pickles, this was a huge pain to write, and a bigger pain to edit. There, it's released on Nightmare Night.

Ugh, not doing this again until I have more free time. Seriously. Ugh.

If you enjoyed the story, please 'like' and 'favorite' it, it helps a lot more than you think, and encourages me to keep going and improving!

The Story

START HERE- SECTION 0
You are Blue Dream, a Canterlot Unicorn. Your coat is an ocean blue, with a light blue and white mane. You are twenty years of age. On your flank is a swirled cloud, to symbolize your special talent for Illusion magic, most often used for show. However, your talents have been noticed by Princess Luna, as your illusions have achieved the level of affecting certain senses. She recruited you into the Lunar Guard, as a Stealth operative.

But tonight is Nightmare Night. Princess Luna has personally given you a day off, and invited you to celebrate the holiday with her at the Canterlot Nightmare Night Festival. You graciously accepted her offer. A recent magical accident has temporarily prevented you from using any spells, your magic too unstable to focus.
You look over your room one last time. Luna had said that she would provide you your costume. Glancing at the clock, you decide it’s time to head out. Luna had requested you arrive at her room at six in the evening.

This is the only time Sections will be fully defined, to make the ‘Find’ function on your web browser easier. The rest of the Sections will be indicated by the letter alone. This is also the last time I will assist you, the rest is now up to you :)

> To head directly to Luna’s room, go to A (Section A)
> To talk to your friends in the Guard first, go to B (Section B)

Section A
You head for Luna’s room quickly, trotting along the halls, ponies dressed up in various costumes for the occasion. You greet a few ponies you know along the way, but focus on getting to Luna’s room.

It doesn’t take too long, and soon, you’re at the door of her study. You raise your hoof and knock, hoofsteps approaching quickly, the door swinging open.

“Ah. Blue. Welcome.” She smiles at you. “I’m glad you could make it. Come on in.” she lets you walk inside, closing the door behind you. “Happy Nightmare Night.”

“Thanks.” You say. “You too, Luna.”

“So I have your costume ready.” She goes into her closet, pulling out a box, taking the contents out. Inside was an light blue onesie, foal booties, a pacifier, and a pack of diapers- only they looked like they were made to fit a pony about your size.

“Luna? What is this?” you ask, a little weirded out.

“Isn’t it obvious? You’re going as a foal for Nightmare Night, and I’ll be your Mommy!”

“Um…” you start.

> “No way!”- C
> “I guess it’ll be fun.” – D
> “…”- E

Section B
You decide to visit your friends in the Guard before going to Luna’s room. Most of them will be on active patrols, so you might as well greet them before they head out.

“Evening, Blue.” Red Star, a crimson Unicorn waves. “Happy Nightmare Night.”

“Where are the others?” you ask, looking around the barracks.

“They headed out early on patrol.” She answers, pulling on light armor, more for show than actual protection. Equestria was not threatened at the moment, so battle armor was more of an option than protocol. “They wanted to be out before the castle rush.”

“I just wanted to wish you guys good luck.” You say.

“Thanks, I’ll pass the message on. You have fun with Princess Luna.” She gives you a smile. “She told us that she had a very special costume made for you.”

“Really?” You ask with interest. “I suppose I should go check it out.”

“Have a nice night. See you around.” Red nods.

You watch Red Star leave, before heading to Luna’s room.

> Go to A

Section C
“No way!” You answer. “I’m not a foal!”

“Aww, but it’s just for Nightmare Night.” Luna insists, picking you up in her magic. She giggles. “I know, I’ll make it an order from a superior. You be my foal for the night.”

You hang your mouth open, making Luna giggle. You’ve never disobeyed an order before, and it would be terrible for you to do so.

“Then it’s decided.” She lays you down on the diaper, taping it up securely around your bottom. It’s thick enough to prevent your legs from closing. She hums lightly as she dresses you up in the onesie, clipping the pacifier to the front. The onesie has her cutie mark on the back of the hatch. It’s surprisingly soft and warm. “Good foal.” She pats where your diaper is, causing it to crinkle audibly, as she slides on the booties. “Now come on, we don’t want to waste time for the Festival.”

You blush brightly, not wanting other ponies to see you like this. “Luna-“ you start.

“Oh, relax, it’s Nightmare Night, nopony will look twice, plus you’ll look adorable.” She pops the pacifier in your mouth, a glow of magic surrounding it. Despite your best efforts, you can’t take it out. “Oh, silly foal, you know that you’ll need Mommy’s help. Little foals can’t do much on their own.” She goes to a crib. You’re rather small for your age, slightly larger than schoolcolt size, the crib only slightly bigger than what a normal crib would be. You fit easily into the crib. “Now wait here for Mommy while she prepares.” Luna leaves the room, entering the bathroom and closing the door most of the way, leaving it a crack open.

> Try to climb out- F
> Wait for her- G

Section D
“I guess it could be fun.” You say, making Luna beam.

“Great!” she pats the bed. “Hop up for Mommy.”

You climb up onto her bed, and she takes the diaper, sliding it carefully under you, taping it up expertly. It’s snug and soft, hugging around your flanks, although it slightly spreads your legs apart. Luna’s cutie mark is printed on the front of the diaper. Luna slides the onesie on you next, her cutie mark on the back of the hatch. It’s made of some very soft and comfortable material, giving an aura of warmth around your body. She smiles as you do, slipping on the foal booties. “Wow…” you say, unusually comfortable in it all.

“Now it’s going to be a bit difficult to move…” she places you on the ground. A combination of the diaper and booties make it hard for you to walk normally, Luna giggling as you toddle around like a foal just learning to walk. “Wait here while Mommy prepares, okay?” she gives you an Ursa Minor teddy bear for you to hug while she goes into the bathroom. You can see her applying makeup from where you are, as you cuddle with the plush. It doesn’t take long before she comes out, dressed up as Nightmare Moon, a combination of magic, clothing, and makeup mimicking the look very well. “Now before we head out, do you need to use the potty? If not, make sure, I don’t know the next time we’re going to be near a bathroom during the festival.”

Her foalish words and tone make you blush.

> Answer Yes- H
> Answer No- I

Section E
You don’t answer, making Luna sigh. “Come on, it’s just for fun, it’s Nightmare Night. Just relax and have some fun.”

“I don’t know…” you mumble, looking down.

“Then how about you try it out?” she asks gently. “Go on, lay down on my bed, I’ll get you ready.”

You do so, and she slides the diaper under you, taping it up securely. It spreads your legs slightly, oddly soft, crinkling a little each time you move.

“Well? Do you want to keep going?” she asks.

> “Yes, please.”- J
> “No thank you.”- K
> “I don’t know…”- L

Section F
You struggle to climb out of the crib, but the bulk of the diaper makes it near impossible. You fall back down multiple times, the thick diaper and booties preventing you from walking normally, forcing you to crawl. Sighing, you sit down, the diaper crinkling quite loudly. Having no other choice, you wait for Luna to come out. She’s dressed as Nightmare Moon, illusion magic giving a quite realistic effect. She doesn’t look very happy, though.

“Did my little foal disobey Mommy?” she asks in a stern voice, picking you up with magic. The pacifier in your mouth prevents you from protesting. “Next time you do that, I’m going have to spank you.” She looks at the disbelieving stare at your face. “I’m being serious, I can’t let a little foal like you misbehave. Now come on, we’re headed to the Festival.”

You feel a pressure down below and you realize that you need to use the bathroom. You usually drink a lot of fluids a day, to keep hydrated. Luna doesn’t answer your muffled nonsense, as it just sounds like a foal whining, the pacifier still not being able to be removed by you.

“Here we go.” She plops you in a foal carrier, giving you a quick nuzzle. She’s already wearing diaper saddlebags, a bag one one side, the foal carrier on the other. “We don’t want to be late for the Festival.” She pauses. “If you behave, like a nice foal, I’ll take out your paci, okay? Will you behave for Mommy? Just nod if you agree.”

> Nod yes- M
> Defy her again- N

Section G
You decide to wait for her to avoid further punishments, the pacifier already being annoying enough. Luna soon exits out of the bathroom, illusion magic and clothing making her look like Nightmare Moon. “Oh, you waited patiently for Mommy! Good foal!” she pats your head, taking out the pacifier. “Since you’ve behaved, I’ll take the enchantment off this.” Luna giggles. “You’re still free to use it if you want, though. Now, does my little foal need to use the potty before we leave? If you do, ask Mommy.” You feel the urge to go, your bladder full, but you’re hesitant about this.

> “Mommy, can you please take me to the potty?”- H
> “Can I use the toilet?”- Q
> “I don’t need to go.”- I

Section H
“Y-yes…” you answer, ducking your head in embarrassment. She smiles, picking you up in her magic, opening the hatch on the onesie and removing the diaper. She moves you to the toilet, setting you down.

“Need help, sweetie?” she asks.

“I-I’m a grown pony, I can handle myself!” you protest.

“Okay, okay. Just come out when you’re done. Be sure to wash your hooves.” She speaks like a mother to a young colt, closing the door behind her.

You use the toilet, flushing it and washing your hooves off obediently, exiting. Luna hugs you when you come out.

“That’s my big colt.” She puts the diaper back on, rebuttoning the hatch. “Let’s go to the Festival now.” She places you on her back, trotting at a quick pace down the hall.

> Go to Section S

Section I
“No, Mommy.” You mumble in answer.

“Are you sure? We’re going to be moving around a lot and won’t have much time or places to go potty.”

“I don’t need to go…” you answer.

She smiles sweetly at you, placing you on her back and heading down the hall.

> Go to Section T

Section J
“Yes, please.” You nod.

Luna looks delighted, even clapping her hooves. “So you’ll do it?”

> Go to Section D

Section K
“No thanks.” You answer.

Luna looks a little sad, but nods. “Okay, I just thought it might be fun. Maybe next Nightmare Night.” She smiles as she removes the foalish garments, before letting you drop back down. “You’ll still come to the festival with me, right?

“Of course.” You smile.

The rest of the night is full of life, the festival one of the most lively ones you have ever been to. Maybe next time, you could indulge in Luna’s playful personality. But for this year, it still ended fine.

ENDING 1 <

Section L
“I don’t know…” you mumble.

“Aww, it’s okay. Just take your time to decide. I promise that if you don’t want to, you don’t have to. But it would make me happy if you did.” Luna says gently.

You take some time to reconsider.

> “Yes, please.”- J
> “No thank you.”- K

Section M
You nod compliantly, making her smile and take the pacifier out. “Good foal!” she encourages. She notices you squirming. “Oh, does my little foal need to go potty?” she coos at you.

You blush bright red at her words.

> Answer Yes- H
> Answer No- I

Section N
Your response is a muffled curse from behind the pacifier. However, Luna understands perfectly what you meant to say, frowning. “Bad foal.” She gives a light spank on your flank. However, the shock of the contact makes you start to wet. Luna hears the soft hissing, seeing your diaper swell up as you struggle to stop the flow, with no success. “Looks like you really are a foal.” She giggles, casting a spell over you, your mind fogging up. You start to drool, squishing around in your soaked diaper. It feels so nice and warm, and your Mommy is giving you such a sweet smile. You giggle to yourself as you start to mess, the back of your diaper becoming soft and warm.

“Mama- doo baaa…” you gurgle, making Luna smile even more.

She hugs onto you, lifting you up for a change. “Just for the night. The spell will wear off tomorrow.”

The next day, you wake up in your bed. What an odd dream you had last night. As you slide out of your bed, and open a drawer for your comb, you spot something that makes your heart skip a beat. A neatly folded clean diaper, and on top, a pacifier attached to a clip. Looks like it wasn’t a dream after all. I wonder how many ponies saw you?

ENDING 2 <

Section S
Luna trots through the hallways. A few ponies giggle at your odd attire, but don’t make much comment otherwise, as, well, it’s Nightmare Night. There are a lot crazier costumes out there.

It doesn’t take too long before you find yourselves at the Festival.

“Where do you want to go, little foal?” she asks.

> Refreshments- U
> Haunted House- V
> Scary Story Campfire- W

Section T
Luna heads through the hallways, when suddenly, Celestia jumps out, in a rather flashy costume- you think it’s zombie cake? You only contemplate this for a moment before you notice a warm feeling spreading across your diaper. Oh no. You look down, and your fears are confirmed. The jumpscare caused you to wet yourself.

“Hello, Tia.” Luna smiles, feeling the warm diaper on her back, giving you a knowing grin. “Nice costume. Do you like what I did?” she indicates herself and you.

“It’s very nice.” Celestia answers, patting you on the head. “The cute wittle foal needs a change.” Luna nods as Celestia lifts you with magic, patting your diaper, the garment squishing audibly. “Let me change him, little sister.”

“Sure thing.” Luna says, passing over the diaper bag.

Your protests are ignored as Celestia rolls out a changing mat, setting you down. Magic prevents you from moving properly as Celestia undoes the hatch and removes the old diaper. It’s heavily soaked, making you even more embarrassed. The Sun Princess begins wiping you off, expertly, before taping up a new one, rebuttoning the hatch.

“How about you take care of him for the night?” Luna suggests. “You seem to enjoy this.”

“Oh, that would be lovely.” Celestia holds you close, her horn glowing. You start to shrink rapidly, until the size of a newborn foal. Your clothes have shrunk with you. “There, now you’re really a foal.”

Your words are nothing more than babble, and your train of thought rapidly starts to slow, your mind adapting to your new body. Celestia pops the pacifier back in, and you suckle, gazing up at her. Her mane is so pretty, so flowy… you reach out to it, making Celestia giggle, letting you play with it.

“Or… since he’s so happy, we can keep him like this.” Luna grins. “I always wanted a foal.”

“Perfect. Just for tonight, I’ll take care of him, and the rest of his growing up again, he’s yours.” Celestia pets your mane as the last of your adult mind and memories leak out of your head, like the drool that comes out of your mouth. Looks like you’re going to have to be a foal for a little while longer.

ENDING 3 <

Section Q
“Can I use the toilet?” you ask, squirming.

“That’s not what foals say.” She says in a sing-song voice.

You submit, mumbling it while blushing with pure embarrassment. “Mommy, I need to go potty….”

“Too late.” She smiles. “You’ll just have to hold it for a while.” She picks you up and bounces you like a foal, giving a knowing smirk as it only causes your bladder to leak a little. “But first, bouncy time for my foal!” She keeps it up, despite your protests, until you start to wet heavily, unable to stop it.

“L-Luna!” you protest, squirming in the now warm and wet diaper.

“Aww, wittle foal wet himself.” She coos, laying you down and holding you with magic. She removes the old diaper, wiping you off just like a foal. In a short time, she has a new diaper on you. “Now come on, we have a festival to go to.”

She strolls through the hallways, being sure that everypony can see you, and your prominent diaper bulge. It doesn’t take long to get down to the festival grounds.
“Where do you want to go, little foal?” she asks.

> Refreshments- U
> Haunted House- V
> Scary Story Campfire- W

Section U
“Okay then.” She brings you over to the refreshment stand, filling a large foal bottle full of apple cider, and some hay fries. “Come on, play the part.” She encourages, holding the bottle for you while she set the tip in your mouth. You begin to suckle. It’s hard to get a rhythm at first, but eventually, you get one, drinking the bottle fairly quickly. The nipple prevents you from gulping a lot of it down at once, but it’s still okay. As soon as you finish, she gives a playful pat on the back. You don’t burp, for obvious reasons, as you’re not really a foal. She begins feeding you the hay fries, not letting you feed yourself, going through with the foalish treatment. “Good foal.” She praises when you finish. “Now, how does the haunted house sound?”

You agree to this, and you head to the eerie-looking hut. It’s obviously magically expanded on the inside. Your suspicions are confirmed as you walk in with Luna, the inside massive and dimly lit. A few ponies are already there, many scared. You take some time to wander deep into it with Luna. Magic here was nullified due to possible interference with the attraction, so light spells weren’t viable. You and Luna just had to wander the dark hallways. Eventually, from your food and drink, you feel pressure down below. “Luna, I need to go…” you say.

Luna gets the message, looking around. “Hmm, we need to find the way out, then.” She glances around. “My, it’s like a maze in here.”
The more you two wander, the more you two seem to get lost, the pressure only building. Eventually, it’s too much, and you start to mess your diaper loudly. Luna gives a little gasp as you tear up with embarrassment.

“Shh.” She hugs you tight, before lifting you up in her magic and cradling you like a foal. “It’s okay, good thing you’re wearing a diaper. Just let it all out, and Mommy will change you.”

Not really being able to hold it anyway at this point, you continue to mess yourself, the mess squishing and spreading around your bottom. Your bladder is also bursting at this point, as you flood your diaper. Luna continues to hum and rock you to comfort you. By the time you’re finished, your diaper has leaked a little onto the onesie. Luna doesn’t seem to mind, rolling out a changing mat, laying you down, being sure to be in a private…ish corner. She doesn’t even flinch at the bad smell as she untapes your old diaper, balling it up and placing it in a diaper bag. It takes time to clean you off with wipes, but she tapes up a very thick, new one. “To prevent leaks. We don’t know how much longer we’ll be in here.” She explains, patting the diaper before rebuttoning the hatch.
By the time you two get out, you’ve gone through three additional thick diapers, and walk out with a soaked one. Luna takes you back to her room for privacy this time, changing you out.

“Sorry it didn’t go as planned.” She says apologetically. “But, you had fun, right?”

> Yes – X
> No – Y
> I want to be a real foal- Z

Section V
You head into the magically expanded Haunted House with Luna. There are a number of other scared ponies there, the attraction filled with jumpscares and screams. Unfortunately, you’re so involved with it all, and scared so much, you don’t notice something until you exit. Your diaper squishing around. You’ve wet it. Luna doesn’t notice at first, talking with another mare. The talk lasts long, and soon, your diaper grows uncomfortably cold. Your bladder is full again, though. Your diaper is so unpleasantly cold at this point, you do the only thing you can think of to make it feel warm again. You start to wet. It comes out slowly at first, as you struggle against your potty-training, but eventually, it flows out like you were over a toilet, your diaper growing warm again. You can’t control a little smile as the warm feeling spreads around your diaper.
“Uh oh, hold on.” Luna takes you to a private area. “Looks like you need a change.” She smiles. “If you needed to go potty, why didn’t you just tell Mommy?”
“I um… I didn’t notice I needed to go.” You mumble. It’s the half-truth.

“Oh, most foals don’t, sweetie, it’s okay.” She nuzzles you, her horn glowing. “You’re just a foal after all.”

ENDING 4 <

Section W
Luna sets you on her lap like a foal at the campfire. You listen intently with her for a few stories, then realize something. “I need to go.” You whisper to her.

Luna nods, picking you up. It takes time, your need to go only getting stronger, but you get to a bathroom in time. She undoes the hatch and diaper, setting you on the toilet, before exiting to give you some privacy. When you finish and clean up, she puts the diaper and hatch back on, bringing you back to the campfire. The night goes well, with you growing sleepy near the end, falling asleep in the warmth of the fire and Luna’s body, as well as the comfort of her cradling.

The next morning is bright and sunny. You remember the previous night’s events well. You slide out of bed, glancing at something on your dresser. It’s a clean, folded diaper and onesie, with a pacifier on top. There’s a note. “Maybe next time, too? ~Luna”

ENDING 5 <

Section X
“Yeah… I guess I did.” You answer.

Luna seems happy to hear this. “How about… how about being my foal for a bit longer? Please?”

You decide there’s no harm in this. You can spend a few days off. “Okay.” You agree.

Luna smiles, taping up a new diaper. “Okay, but no more potty for foals. Foals don’t know how. It’s only for big ponies.” She hugs you tightly. You feel comforted in her hug. Maybe this will be fun. After all, Mommy knows best.

Ending 6 <

Section Y
“No. I didn’t.” you frown at Luna.

“Oh…” she looks down. “I’m sorry about that. I promise I won’t make you do it again.” She says. “Well… see you, then.”

You nod, heading out of her room. It wasn’t the best Nightmare Night. Maybe next time, it would be better. You know Luna meant no harm, but it still wasn’t okay in your mind. You decide to spend next Nightmare Night alone.

Ending 7 <

Section Z
“I… I want to be a real foal. I really enjoyed you being my Mommy.” You say.

Luna blinks, surprised before a moment, before smiling widely. “You mean it? I can do that.”

“Yes.” You nod. “It was lots of fun, Mommy.”

She hugs onto you, her horn lighting up. You feel yourself shrinking, wetting and messing yourself past a certain point. But you don’t care anymore. You just focus on your Mommy’s comforting warmth, and the nice feeling of your just-as-warm diaper. Your adult memories slowly fade away, as you drool happily onto yourself and Luna.

“My little foal, forever.” Luna promises you, as she gets you ready for another change.

Ending 8 <