3. One Small Detail

A unusual silence engulfed Ponyville, as the vast majority of its inhabitants were still away fro home.It was short-lived however, as two bolts of blue lightning zapped by the city square, a boom following them, much like the one after a Sonic Rainboom.

The two mares looked at each other, with visible excitement. Twilight’s lips moved, from sheer amusement, then to wonderment, while Vinyl’s were in a constant state of chuckling. Only after they stopped at Vinyl’s house, and the boom followed them, did they hear the voice of the Ponyville librarian.

“Wow this is awesome…wait why can’t I hear anything? ” it said.

“Hehe, first time breaking the sound barrier, I see.” the voice of DJ-Pon3 follow suite.

“Kind of forgot that that we were faster. It was just too much fun. And manipulating sounds was quite fascinating.” Twilight
admitted, with a giggle in her voice.

“Yeah, it is quite the head rush. “ Vinyl agreed.

“The train should be here in a few hours, so remember the rules, or we will feel the smite of the moon princess.”

“Of course. I just hope I can keep it a secret.”

“Don’t worry. You will be surprised how easy it is when you have impending doom as a motivation.”

Twilight gulped, her thoughts on Nightmare Moon. If Luna was even a sliver as bad as her, it would be quite a nasty end to her existence.

“That is all fine and good, but can I get some time in the limelight?”

“All in good time, Bass! Now, let’s go to the station, but at walking speed this time.”

“Awwww.” both Twlight and Bass pouted.

The train did arrive soon enough, and both Vinyl and Twilight awaited their friends. As the door of each carriage opened, ponies exited the train from Manehatten. The first one to catch their eye was the cello playing pony and Vinyl’s marefriend, Octavia. Her stoic demeanor quickly soften as she noticed the DJ on the station platform.

“Not a word.” Vinyl whispered to Twilight under her smile.

“I know, I know, I'm not a filly.” Twilight replied, visibly annoyed by Vinyl’s insistence.

“Hello darling, did your session go well? Oh, hello Twilight! I hope your cold got better.” Octavia said in her usual Canterlot style, with proper stress on the right syllables and a melodic tone. She got her answer in form of a passionate kiss by her one love. Octavia quickly calmed down from the shock to return the kiss to Vinyl.

“Usually you wait. Is there something wrong?” Octavia asked, as she removed the mane from her face.

“Well, I missed you and I realized how much you mean to me.”

“That is… strangely romantic of you, Vinyl.”

“Shut up.”

“Now that is the mare I love.”

As the two lovers continued their flirting, Twilight’s friends came out one by one. First Applejack, then Fluttershy, Pinkie Pie, Rarity and lastly Rainbow Dash. Of course, Pinkie was the first one to see the purple mare, jumping, and hugging Twilight to the floor, and sobbing profusely.

“Oh you're okay! When Princess Luna told us you were too sick to come over, I was so sad, but now I am so happy that you are okay and…!” Pinkie said, at a rate of ten words per second.

“I'm fine now Pinkie, thank you for your concern. Can you please stop strangling me?” Twilight asked, as she battled for air
while in Pinkie’s death grip

“She likes personal touch, have to remember that.”

“Vinyl Scratch, what the buck did you do?!” Rarity shrieked, bringing the whole group to a halt. Everypony stood in awe of hearing Rarity using language like that, let alone in public.

In blind rage, she grabbed the DJ, and placed her hooves and her neck. Octavia tried to push Rarity away, only to be pushed away by Vinyl, as if her marefriend deserved this treatment.

“It was an accident, I swear!” The DJ pleaded her innocence.

“Eh Rarity, what is the problem?” - Applejack inquired, as she tried to pull the two mares apart.

“She, she… left my silk… out to dry outside.” Rarity answered, as the reality of the situation sank in, and she tried to think of anything that made remotely sense. Odd glares were cast in unison by the others, as they didn't quite believe Rarity.

“Twilight, could you please join me and Vinyl for tea later today? I must speak with you about this “silk”.” – She said, in her usual royal demeanor.

“No bucking way, Rarity?”

“What happened to Rarity, I've never seen her this out of shape.” Rainbow whispered to Fluttershy, only to receive a confused look from the pink maned mare.

As both Twilight and Pinkie Pie picked themselves up, the two remaining mares from the group approached the Element of Magic, a new feeling boiled inside Twilight.

“I see you're better. Wouldn't want my coordinator out sick for my routines, you know?” Rainbow said, boasting to the figure in front of her.

“Strong wings, nice body, and that plot. Wow, that is one hot mare. You like her don't you Twi?”

Twilight’s pulse quickened, as thoughts of doing things to Rainbow, such bad things to her friend. Her eyes started to flicker, changing to magenta, as fur on her hooves slowly whitened. Her mind beginning to feel numb, but in the most enjoyable way possible. She was losing her grip, and she could only mutter “Vinyl, help…”

Both Rarity and Vinyl jumped in shock, grabbed Twilight by her shoulders and began to pull her to Rarity’s shop.

“Sorry, seems she had a relapse. She needs peace and quiet, so no visitors! We will see you at the party!” the white mares said as they dragged Twilight across the road and disappeared into Rarity's boutique.

“What just happened?” Rainbow said, voicing what the others were all thinking. One by one, the ponies left for their homes.

“Hey, Rarity, where do I put these? Rarity? Anyone?” Spike, who had just managed to get out of the train, asked. He was carrying a large pile of suitcases and bags of Rarity’s clothes.

As Spike sighed, the train finally left the station, leaving the purple dragon alone with his predicament, while he slowly made his way to Rarity’s boutique.

The door was closed, and Sweetie Belle was with her friends in their treehouse, and Rarity had canceled all her appointments for the day. Both her and Vinyl sat next to Twilight, whose fur was now switching colors in a pulsating motion. She was on the verge, and this made Rarity uneasy.

“So let me get this straight. You performed the Initiation, without closing your house door…” Rarity said.

“Yes.”

*BONK*

“Ow, not in the head!” Vinyl cried, as she massaged the place Rarity hit her with her hoof.

“…You cursed the most powerful unicorn in all of Equestria.”

*BONK*

“Stop it!” Vinyl growled

“…and you did it while she is in Heat.”

*BONK*

“Okay, that one was deserved.” Vinyl admitted, as she knew what was to follow.

The pulsating changes subdued, and Twilight was soon to her old self.

“What happened? Where am I?” she inquired

“You are in my shop, darling, and thanks to Vinyl here, you almost changed in front of most of Ponyville.”

“Rarity, are you…”

“Yes, I am your Sister.”

“Wow, now it all makes sense, the white…AHHHHH!”

Twilight was struck by immense pain in her stomach, as if she had never eaten in her life. Tears began to flow down her face, and she contemplated why she deserved this. The worst part was that even through the unbelievable pain, she felt a dash of desire for a certain cyan plot. Weird thoughts were imposing themselves, and she could picture Bass Canon, but with a demonic aura around her.

“Focus Twilight, I need you to focus! Cold water, ice…” Rarity said

“Granny Smith!” Vinyl cried.

Finally the pain subdued, as well as her lust. Twilight was in control, at least for now.

“Thanks, I needed that. Why did I react like that? You said when that we feed on thrill, but I just looked at Rainbow Dash and I almost lost it.” she replied, visibly out of shape.

“What Sister Vinyl failed to mention, is that there is a caveat. A Sister has both great power and a great weakness during
Heat. Your magical power is fully released, but your hunger for the object of desire is constant during this time. And she also failed to mention the fact that your cursed self is not really that nice of a mare.” Rarity explained

“You mean, Rainbow Dash?” Twilight asked

“In your case, yes.” Rarity replied

“The good news is, there is a party tonight at The Club, and since I’m the DJ, I can let you backstage, so you can release some of that hunger.” Vinyl retorted

“That sounds awesome!”

“But what will I do to Rainbow? I can’t control Bass!” Twilight pleaded

“That is the thing about this curse. If you try to control it, you will starve. If you let loose too much, you become it. It's not the best idea to let the curse take over, but we have little options left. I have faith in you, Twilight.”

“Okay. It doesn't seem like I have a choice, do I?” Twilight remarked in defeat.

“Tonight I am gonna make Rainbow mine!”

A gulp came from the purple unicorn, as she knew that after tonight nothing would ever be the same again.

A high-pitched whistle came from the kitchen, and Rarity rushed inside. Moments later, she came back , levitating expensive china after her.

“I almost forgot the tea. This whole ordeal makes me so forgetful … Spike!” She said, and magically opened the door, only to be showered in suitcases, along with a little dragon, who fell asleep at the door.

Author's Note

Here we are. The table is set, and the roles are given. I know, it wasn't really a mystery who the third Sister was, and I didn't want to indulge in her backstory all that much, since there are more urgent matters to attend to. Next up, Rainbow meets Bass, and we will see where that takes us. Just a hint, those tags aren't for nothing ;).

EDIT : I would like to take the time and thank x3z8 (http://www.fimfiction.net/user/x3z8) for taking the time and effort into editing this story, so that it reaches it's full potential. Eyery chapter will be editied from now on. I hope you enjoy reading as we did writing/editing it did.