Rainbow's Secret

by LuckyBass13

Rating: teen
Tags: Sunset Shimmer, Princess Celestia, Slice of Life, Alternate Universe, Human, Sad, Main 6, Princess Luna, My Little Pony: Friendship is Magic, Other, Romance
Length: 4975

It was a normal day for Rainbow after her daily practice soccer match. But when a sudden prank after a false rumor goes out of hand a secret explodes into view.

A Few months after the Siren incident there has been a rumor about some sorta noise that makes a small crinkle sound. Soon Applejack deduces that almost every time there is a sound as such Rainbow Dash has been around where the sound is emitting. Pinkie and Applejack believes she is making this rumor for the sake of a prank. So they decide to use a special duplicate pair of shorts that matches rainbows and have it inflate and explode as a prank back. But before they can do it Pinkie gets the vibe that they shouldn't do this. What will happen when the button is pressed and the deed is done?

This is a padded story that is thought of and run through by Masked Pony. Trust me this is more on the serious side and it will be on the EQG side of the mirror. If this isn't your story then please skip it. If you do read it give your honest opinions.

Published 2015-03-11 23:10:01 UTC
Last updated 2015-03-14 05:26:56 UTC

The Incident

It has been around a month after the incident with the Dazzlings, everything is back to normal. The students are learning in harmony, Sunset is accepted once more by everybody, and no more harm was done to the school or its students. During that month of peace a small rumor has been going on. Something about students hearing a sudden “Crinkle” noise. It has students looking everywhere for it and can’t seem to find its source. However, every time they mention the noise they happen to almost say the same thing. “ I’ve heard some Crinkle noise in class.” and “I’ve heard a crinkle noise in the library.” all the time they keep asking that same sentence but what they don’t know is everytime they heard it a certain somebody was always around them when they heard it. A certain Rainbow haired person. It was the 27th of September and everyone was in school as a certain person is now thinking Rainbow Dash might know something they all don’t know.

“Hiya Applejack!” Pinkie suddenly pops up in front of her causing her to be scared.

“Wha.. Pinkie? Shhhh!* Applejack takes pinkie next to the lockers to avoid attention.

“Pinkie have ya been hearing that um Crinkly noise?”

“Mmhmm!”

“And have you been curious as to why almost every time we hear that Rainbow has been around?”

“....No, why?”

“I’m thinking she might know something that we don’t know… I’m thinking she’s just causing rumors just for kicks.”

“Like a prank?”

At that point Applejack realized what this all is, A big rumor prank. Thinking Rainbow is clever, Applejack now has a plan to prank her back.

“Pinkie ya’ll wanna do something fun?”

“Ooooooooooooo I thought you never asked! Sundown 7 o’clock, Don’t be late.”

“What? No! Ah meant prank Rainbow Dash, seriously what’s going through your head?”

“Ooooh that’s what you meant, Okay sure what’s the plan?”

Applejack tells Pinkie the plan and she giggles and laughs in excitement. Pinkie then quickly leaves the school to get the stuff for the prank as Applejack imagines the reaction she would have. In the Girls Bathroom we find Rainbow Dash coming out of the room with a *sigh* as she quietly walks back.

“This is getting out of hand, maybe it was a bad idea to bring them to school…” She moves to her next class only to be stopped by Applejack with a smirk.

“Hi Rainbow, Nice day isn’t it?”

“Oh Hi Applejack, Yeah its nice.”

“So Rainbow, you’ve been hearing rumors lately? Anything in particular?”

“Um...No, You know I don’t focus on that right?”

“True, But its been going on for a month and its been well… the talk of the school. Surely you have heard of it right?”

“Look I have been focused on a lot of stuff and i don’t have time to talk about nonsense, its best if we just leave it okay?”

“Eh.. Shoot yourself.” Applejack lets Rainbow go to her Gym Class as she now hears the crinkle noises again and which confirms her suspicion. Rainbow is Hiding something.

Not to long now Pinkie comes back with a pair a shorts just like Rainbow’s but its been modified as a prank to inflate and explode. With some snickering They wait till Rainbow was away in the locker room and they switched her shorts with the prank one and leaves. Soon they continued school and it was during lunch period and they see Rainbow leaving the cafeteria. Following her around the lockers Applejack signals to Pinkie it activate the prank, however Pinkie begins to feel a little guilty.

“I… I can’t do it.”

“Whatcha mean “Can’t do it”?”

“Its too much I don't’ think we should do this, I can’t help but feel something bad will happen if this is done.”

“Whatever I’ll do it then.” Applejack Swipes the button and presses , ignoring Pinkie’s reasons and soon it starts.

Rainbow feels some pressure being made on her shorts and soon she can hardly walk . She looks down to find they are starting to expand. Freaking out she tries to make it to the nearest bathroom as she fears it might explode but it was too late and her worries are true, the pair of shorts explodes revealing the most shocking thing of all. Rainbow was wearing a diaper and by the looks of it, it was recently used. Blushing mad she panicked and looks around only to find her best friends now laughing at what they are seeing. Scared and tearing up she runs away only to not know that a third person has seen it happen. In the cafeteria Vice Principal Luna came by to a table with Sunset and her friends Rarity, Fluttershy, and Derpy.

“Oh Vice Principal Luna what is it that you like?” Rarity was surprised that Luna came to her.

“ I came with a message telling you to bring some clothing like a skirt to the girls bathroom for Rainbow, that is all.” Luna walks away leaving Rarity confused but as a friend she decides to accept the task and heads to the bathroom only to be stopped by the locked door. She knocks only to hear a sobbing voice.

“Go away…”

“Rainbow Dear is that you?”

“Don’t come in...please.”

“Then I won’t but why did you lock yourself in the bathroom?”

“It’s too embarrassing…”

“Is that way I was asked to bring you a skirt for you?”

“Who asked and how?”

“Vice Principal Luna, and how she knew I don’t know. If you won’t let me in then at least let me hand you the skirt through the door please.”

“...Okay But don’t look okay?”

“Promise.” Rarity Closes her eyes as she holds out the skirt for Rainbow to grab. Minutes later the door unlocks and Rainbow is now out with a new skirt on but her eyes were red from the tears she shed.

“My word are you alright darling?”

“No… I…” She was interrupted by the intercom being heard.

“Attention Rainbow Dash please report to the Principal’s Office immediately, thank you.”

The intercom cuts off as Rainbow fears for the worse, without saying a word she slowly walks to the office leaving Rarity Behind. Once she reached the office and opens the door she is greeted by Luna and asks her to sit down. Rainbow does so and waits as she sweats in fear. 5 minutes later the phone rang for Luna to pick up receiving the message to let Rainbow in. She slowly walks to the door and with shaking hands she slowly turns the knob making noises due to her shaking much. She opens the door and closes it behind her as Principal Celestia sits in her desk asking Rainbow to sit. Rainbow does so and silence was made for almost 3 minutes until Celestia began.

“You know why I called you here today?”

“Um… no.

“Well as I was strolling the halls I noticed you walking down from the corner I was going to say hi before I saw Applejack and Pinkie Pie. It was then I see them fighting over a button until Applejack pressed it and then… I saw what happened.”

“I Uh… I…”

“Rainbow, I know its not my place to ask but why would you wear a diaper in school? You’re not incontinent.”

Rainbow just sat there speechless, unable to speak up no matter how long she waited. Celestia decided to speak up.

“Well whether you want to explain it or not I’m going to inform your parents about this.”

“Please Don’t! I don’t want them to know, can’t we just leave it a secret? Please?” Rainbow begs trying to talk her out of it.

“I’m sorry, you're Lucky I asked Rarity to help you when I saw the event transpired.”

“So that’s how she knew, But...”

“I’m sorry Rainbow but I have no choice now you may return to class.”

Celestia turned her chair as Rainbow tilts her head down in defeat. This was too much for her. As she went out she asked Luna if she can take a leave in which Luna agreed. As Rainbow got out some of the students after lunch period looked at her as she walked to her locker and gathered her things and proceeded out the door. She continued down the streets and is at the Sugarcube Corner. She goes in and gets a small snack and a drink, she was eating something to try to calm her but knows that won’t do to having to now face her parents because of her secret being out. After paying she proceeded out the door and walks the streets to her home. As she opens the door it bumps into some suitcases. She looks and finds out its her suitcases, she opens them to find Her clothes and her diapers in it but no underwear. She now knew they got the message but why was it packed. she got up only to see both her parents Standing firmly with disgruntled faces staring coldly at her. Before she could say anything the father told her that her “Hobby” is a disgrace to her family and doesn’t approve. Her mother then ranted about how she could do this after all she done to raise her, and going about saying “I Raised you better”.

Given a chance to speak she spoke saying this is something she loved and knew her parents wouldn’t approve this, but her pleas were ignored as they demanded the house key and told her to hit the road. For she is no longer welcomed in her home ever again. With tears of heartbreak and betrayal Rainbow grabbed her suitcases and heads out saying nothing to her parents. Hours has passed and School was let out, Sunset decided to take a small walk around the blocks to see the sights again only to find a familiar face sitting on a bus bench with suitcases piled next to her. Sunset decides to find out what’s the meaning of this.

“Hey Rainbow, what’s going on?”

“Oh… Hey Sunset, just.. its complicated.”

“Well by the look of these suitcases “Complicated” might be underplayed. Come on Rainbow you can tell me.”

“ I don’t know…”

“Please if its something big I want to help, We’re friends Rainbow you can trust me.”

“Okay but, promise you wont’ laugh?”

“Promise.” Sunset Sits next to Rainbow as she is about to hear something shocking.

“Okay so… I have a well hobby, well more of a likeness. I um.. like to wear um.. diapers…”

“What?” Sunset looks at Rainbow as her face blushes when she continued to explain.

“Recently today My shorts sorta exploded and my diaper was seen by little people, one being Principal Celestia. After getting a new skirt from Rarity I was called to the office where she talked about my hobby. Then she said she was going to alert my family which I tried saying please no but she did it anyways. After asking to take a leave from school I got home and already my bags were packed.”

“You mean you were kicked out?! Out of your home?” Sunset sees tears in Rainbow eyes as she begins to cry.

In an instinct Sunset hugs Rainbow, calming her down with a helping pat on the back. After a few minutes past Sunset sees Rainbow starting to only sob a little bit and does what a friend should do in this time.

“Listen, if you like you can stay with me.”

“Really?”

“Sure and I’m not taking no for an answer. Come on.”

Sunset grabs some of Rainbow’s bags as Rainbow grabbed the rest and headed out to Sunset’s apartment as the sun set’s. They Reach the place and Sunset helps Rainbow unpack some of her clothes and her pack of diapers.

“Listen I only have one bed so…”

“It’s Okay Sunset, I’ll sleep on the couch. Thanks again for letting me stay with you.”

“Hey I’d do it for anybody, especially you Rainbow. Anyway feel free to get comfy. Dinner will be ready soon.”

“Wait you mean I can feel at home?”

With a nod from Sunset, Rainbow Takes off her skirt Revealing her diaper as she now is only dressed in her t-shirt, diaper and socks as Sunset lets off a small giggle.

“What’s so funny?” Rainbow asked with a little angry tone.

“Nothing its just, you look cute.”

Rainbow turns from stern face to a blushing smile as she gets on the couch. Time passed by and dinner was served as they enjoy each bite. Soon it was 9:30 pm and it was getting late. Sunset lets Rainbow use her shower as she heads to the bedroom and decides to change into her pajamas. Rainbow, after 5 minutes, comes out all clean and fresh as she puts on her pajamas and is diapered up. Sunset comes out as well.

“ Here you go.” Sunset spoke as she gives Rainbow some covers and pillows.

“Thanks, I don’t know where I'll be if you hadn’t shown up.”

“Lets not worry about, we’ll talk about your parents in the morning. Well time to sleep.”

“Thanks. Wait.. What’s that?” Rainbow sees a line around the top of Sunset’s pajama bottoms which appears to be a diaper line. Sunset stops and soon explains.

“Well, you see like you. I too like wearing diapers.” Sunset blushes but only to noticed a shocking face from Rainbow.

“How long were you wearing them?”

“I kinda wore them just a bit after I first entered this world. I thought it was what you wore as a simple ware but I soon got comfy and well here we are.”

“Wow.”

They shared laughs together and soon wished each other a good night’s rest. They both slept peacefully but it wasn’t long until Rainbow begins to toss and turn a bit as she was now having a nightmare. She continued until she woke up from a shock from her nightmare only to find her diaper completely soaked. She just sat there looking down and started to cry once more only to be heard by Sunset which came by to see her in this state. She hugged onto Rainbow calming her only to find this is more serious than ever. After Rainbow calmed down a bit Sunset offered to not only let Rainbow sleep with her but to also change Rainbow. Rainbow of course blushed at the idea but with a weak nod Sunset helped her to Sunset’s bed and helped her change into a new diaper. After discarding the old one Rainbow got under the covers along with Sunset and she turns off the lights. Sunset didn’t sleep yet but only to hear a peaceful little snores from Rainbow. With a smile Sunset sleeps and they slept peacefully through the remainder of the night.

Chapter 1
The Incident

Obstacles of a Padded Athlete

The night of the Kickout

It was the night and in a house of a well known coach for Rainbow’s team in soccer, Mr. Tirek Mantique was asleep in his house waiting for the next day for tomorrow was the day the soccer team fights the 2nd round against the rival school’s team “The Petrifying Cockatrices”. Soon his phone rings and gets him in a mood he doesn’t like a lot. He got up and reached out for the house phone.

“Hello Tirek Mantique speaking.”

“......”

“What? You want me to kick Rainbow out of the team? She’s the best we got.”

“......”

“Tirek: Well I assume that but that’s no reason to deny a possible future for her.”

“.....”

“I’ll Consider it, thanks for calling... “

Tirek hanged up the phone with confusion as he wouldn’t think Rainbow would want to leave the team, he would talk to Rainbow as soon as he gets there to school in the morning until then he returned to his sleep.

The Next Day

It was morning time at 6:30 am and Rainbow wakes up with a nice attitude from her previous experiences. She looks around not seeing Sunset anywhere but she soon smells some nice breakfast being made in the kitchen. When she moved the covers from her she soon sees her diaper that she’s wearing having a big yellow tint on it meaning she had used it. She soon got up and moved to the bathroom and changed herself into one of her diapers that helps her move around. She proceeded to the kitchen seeing Sunset in clear view.

“Morning Sunset.”

“Morning Rainbow, you slept good didn’t you?”

“Yep had to change myself is all, what’s cooking?”

“Eggs, Jelly toast, the normal breakfast.”

“Cool, set me up some please.”

With a nod Sunset continues to cook as Rainbow takes a seat making a cute crinkle sound from her diaper. Rainbow felt right at home with her just being herself and able to do this unlike what she was able to do at home, because of keeping it a secret from her parents but now its pointless. Rainbow now feels scared that she thinks her parents don’t care for her anymore, afraid they’ll turn on her. This caught Sunset’s attention but decides not to speak but brings two plates for them to eat up. After a nice breakfast They got dressed and made sure they got their stuff ready as Sunset is now wearing her normal attire as Rainbow got on her new shorts and wearing a diaper that doesn’t expose herself too much as she lastly puts on the strap-on skirt. Rainbow looks into the mirror as her mind was now thinking of stuff as Sunset took note.

“Everything alright?”

“I don’t know… To be honest I’m not sure what’s going to happen today.”

“Hey only Principal Celestia, Pinkie and Applejack saw you in your diaper I don’t think anybody knows besides them three.”

“I guess so… But I don’t want to talk to them Pinkie or Applejack for what they did…”

“Hey i’m sure they feel just as bad as anything right now. Now let’s get going.”

Sunset gave Rainbow a hug which comforted her enough to get her bag and they exited the Apartment. They walked down the streets and around sugarcube corner to find Pinkie Pie waiting outside knowing Rainbow and Sunset would walk by it, somehow. They stopped to see Pinkie coming up to them with a somewhat disappointed face. There was an awkward silence between them until Sunset broke the silence.

“Hey Pinkie Pie, did you sleep good?”

“No I did not. Rainbow… I’m sorry okay.”

Rainbow didn’t speak she just looked at her then somewhere else like she didn’t care.

“I’m really sorry, as soon as we got the stuff ready I suddenly had a bad vibe going on and protested not to go with it but Applejack wanted to get you back and I tried fighting her and she was too tough for me…”

Rainbow Looked at Pinkie Pie like she wouldn’t believe it but she then see Pinkie’s face that had desperate and sadness on it. Rainbow never seen Pinkie like this before and this made her question it. Soon Rainbow sees tears from Pinkie’s eyes and that was the turning point. Rainbow now knows that Pinkie was telling the truth and if memory serves correctly she did see Applejack with the button before running away. With a respectable look Rainbow moves in and gives Pinkie an apology hug which she soon gave Pinkie a smile on her face as Pinkie hugs back. The hug lasted more than 5 minutes as some tears even Rainbow’s was shed upon. After the hug they continued together meeting up with Rarity and Fluttershy as they moved into School. Just before They reached the doors Rainbow was behind not taking a step before the door. Her fears are getting to her as she was afraid of, “Who else knows her secret? Will she be the laughing stock of the school? Will she…”. The moment stopped when Sunset snapped Rainbow out of her trance as she comforts her with a nice over the shoulder hug.

“Hey Rainbow Cheer up, I’m sure things will be fine. Trust me.” Sunset looked at Rainbow as she looked up on Sunset with a smile of trust.

They enter the building and put away their bags and gathered their books for first period but just as they walk through the halls the intercom sounded.

“Would Miss Rainbow Dash Report To Mr. Mantique’s Office Immediately Please.”

The intercom said the message one last time before clicking off as this brought some new fear to Rainbow’s condition. She moved to the Gymnasium then across from the bleachers there was the door leading to Mr. Tirek Mantique’s Office, The Man in Charge of the Teams and curriculum of the class and sports of this school. She gazed at the door looking real scared like a little girl would. She reached for the doorknob and grasped it with a trembling tension as she slowly turns the knob. Soon she opened the door and there inside was the desk and chair with him in it facing backwards from her.

“Y-you want to see me Mr Tirek?” Rainbow’s voice sorta squeaked as the chair swiveled around showing his true figure. A Decent red like skin with a white back spiked hair wearing a dress shirt under a simple formal vest wearing tan pants and normal dress brown shoes with a menacing look on his face but all that was stopped with him talking with a loud impression.

“Rainbow! Good to see you how’s my number one Athlete doing today?” This shocked Rainbow as she was expecting some horrible deal about yesterday but she played along.

“Very Good Mr. Tirek sir.”

“Please Rainbow Call me Tirek, We’re good friends and Your the best that this school has to offer in the sports department. 3 time running champ and soon to be 4 for this years Soccer Tournament.”

“Y-Yeah, those preliminaries were nothing more than practice rounds.”

“That’s what i like!” Tirek gave a laugh both funny and a little off but that didn’t stop Rainbow from laughing with him. Soon the laughing died down as Tirek got up and closed the door.

“Please Rainbow take a seat we have somethings to discuss about the sports plan.” Rainbow nods as she takes a seat as a quiet crinkle noise was made that caught Tirek’s ears.

“So… The Rumors are true then?”

“Wha-What do you mean?”

“Don’t tell me you haven’t heard the rumor, Random Crinkle Noises, and almost all of them being said claims you are in the area. Seems more than a coincidence to me. And I heard it the moment you sat down.” Soon he sits back down on his chair and looks at Rainbow with a curious look to solve this rumor as Rainbow now sweats a bit.

“Rainbow… Do you have something to hide?”

“....No Tirek, Nothing to hide.”

“Are you sure? You can trust me Rainbow.”

“.....” Rainbow said nothing but shaking her head as a sign of “No”.

“Well, I won’t say now but maybe this will say something. Last night I was called by your parents saying that they want you to be removed from the sports program all together.”

Rainbow felt an arrow like shock in her body from being surprised about hearing what he said. She was on the verge of crying but kept it together.

“ At first I was super shocked to hear this and asked why they wanted this. Soon they said.. You wanted this to happen. Now if I’m an expert at lying and stuff… this is something I do not believe. So I lied to them about letting you go, I wanted to hear it from you before I do this… Rainbow do you want to leave the Sports Program?”

This was hard for Rainbow to take this this information in, not only from being kicked out but being removed from the thing she likes a lot. She gets her head as straight as she can to give her answer.

“...No, I don’t want to leave. I love doing sports and stuff, why would i give that up?”

“Well Rainbow, Now that I see the truth tell me this. Just between you and me. What was it that your parents wanted you to be kicked out?”

Rainbow’s mind was afraid to say, afraid of being either laughed or be disappointed on by him, but given circumstances she knew Tirek can be trusted.

“Alright but please don’t laugh…. the reason was because…. I … Um I like to...wear… diapers…” Her face was a little buried in the seat as Tirek took in this info. Soon he started to chuckle and laugh Which made Rainbow mad a bit until Tirek spoke up.

“ That’s the big secret? Rainbow star student loves wearing diapers? Well that explains a lot. Well jokes aside it's alright Rainbow, We all have our secrets so deep that we need someone to trust with and understand. And between you and me…” Tirek looked around before leaning over to whisper.

“I sorta have a thing for Celestia.”

“WHAT?!?!” Rainbow was flown back to her seat after hearing this new info.

“ What? I think she runs a nice place here and she well suited and better mannered than most. I like that, Plus she has a good personality.”

“I I I I I” Rainbow could say nothing but “I” as she was still shocked from this secret.

“Anyways back to the subject, do you happen to wear them diapers everywhere?” Rainbow can only blush and nod.

“ Hmm… Well first off I won’t permit you to wear diapers because not only how well they are made and stuff, it could affect your gaming skills.”

“Oh… Yeah.”

“So you’ll just wear something like it but more… Mobile something that you can still feel nice and well safe.”

“Hmm…. Oh! How about Pull ups?”

“What?”

“Their made as training pants for kids that have some accidents and to teach them how to be potty trained… maybe I can wear them instead?”

“Hmm… Alright fair enough, Next practice you will be wearing one of them and show me your progress in practice. If you do better, then you can keep them. If not then I’m afraid to keep them and diapers off of the sports okay?”

“Deal” They shook hands with smiles on their faces as they said their “See ya later”s and Rainbow walked through the halls with a smile on her face.

The School day went by alright with in between periods of bathroom breaks and nice conversations. Soon it was Lunch period and Rainbow sits with Sunset Shimmer and her best friends. As they exchange conversations Rainbow looks behind her to see a Girl eating by herself not knowing who she is.

“Hey who’s that?” She continues to look until Pinkie stepped in from the lunch line out of nowhere like usual.

“Oh her? That’s Breeze Blitz a new student from Las Pegasus. She moved for personal reasons and lives just herself. She’s looks sweet and super shy, kinda like Fluttershy.” Fluttershy realizes her name was called.

“What? I’m not usually shy like that.”

“Say what you will Fluttershy, its true.”

They continued to talk until Rainbow sees Breeze leave the Cafeteria with a bag over her shoulder. Even if it was curious to her Rainbow just ignored the bag and continued to talk. As the hours go by from 4th, 5th, and 6th period, School was finally done and Rainbow quickly made her way to a nearby store and picked up a small pack of pull ups. Sadly there was only Pink for girls even though she is, she bought them and returned to her locker room in the Gymnasium. After a quick attire change to her Soccer Uniform she took the field looking great as ever. Tirek coached the team with many training exercises and many routines. Soon it was just a simple 3 on 3 practice match having Rainbow Teamed up with Colgate and Lyra, Vs Lightning, Cloud, and Surprise. The match lasted for only three rounds and was soon over with Rainbow’s team winning 7 to 4 from Lightning’s team. With a good game pats on the back the team soon dispersed back to the locker room as Tirek Congratulate on Rainbow’s improvement. After that she returned to Sunset’s Apartment and soon chat, ate and proceeded to bed. This time Rainbow wanted to sleep with Sunset considering from last time and Sunset was okay with it. Soon they slept the night away.

“Back to Morning Time
At Sweet Apple Acres”

Applebloom was getting her stuff ready to go to school with her friends and soon she stopped by Applejack’s room to see if she was ready. But when she got there she only saw no light and Applejack laying down on her bed with only her regular attire on but no shoes. She only stood there with a serious and concerning face as she gazed up at the ceiling. Applebloom looked worried as she entered the room walking to to the side of Applejack’s bed.

“Applejack are you ready to go to school?”

“I’m not feeling fine Applebloom, I’m just going to take a sick day today.”

“How come?”

“ I just got a lot of stuff in my head now, and I don’t think going to school now will help that out.”

“Are you sure?”

“Yes Applebloom, Ya’ll should hurry now.”

“Alright, get better okay?” With a nod Applebloom ran out the room closing the door behind her as Applejack continued to stare at the ceiling. wondering what she should next, after that incident with Rainbow Dash…

Chapter 2
Obstacles of a Padded Athlete