The four princesses, Chrysalis and Shining Armour sat around the throne as Celestia’s sun began to set. All the servants and guards had been dismissed so the royals could be informal and have private conversations with each other, a treat they didn't often get.

It was the second day of Cadence and Shining visit and as they could not spend too long away from the Crystal Empire, they had spent the whole day with Twilight and Chrysalis catching up. Tomorrow they were due to travel back, but the chance to catch up informally was a welcome relief to the siblings. The day had been filled with fun and laughter, the tension of the fours complex relationships and history forgotten.

After being away all day, Discord appeared with a flash in the room, everypony turning to greet him. Cadence gasped as she saw the god of chaos “Discord, how did you get that black eye?”

The draconequus slid pathetically over to the pink alicorn and put his head on her lap, and with the biggest puppy dog eyes possibly whined “Shining hit me!”

Cadence stroked Discords head “Awww, you poor thing…Shining, apologise right now! Wait a minute…” the alicorn looked down at Discord “…couldn't you just like, heal yourself straight away?”

“Erm….” Discord stalled.

“You did this just to get him in trouble, didn't you?” Cadence put her hooves on her hips as she spoke.

Discord slid off the alicorns lap and over to his chair, healing himself as he did “He still hit me!” he moped, causing Luna and Twilight to both giggle.

“Maybe, and that was wrong, but deliberately trying to get him in trouble is just as bad young draconequus!” Cadence replied authoritatively, but with a bit of a sparkle in her eyes.

Shining turned to his wife “I love how you turned into such a mother right then…I can’t wait for our foal to arrive!”

Cadence softened her face as she turned to her husband “Well, I’ve had practise foalsitting Twilight for many years…”

“Hey, since when did you have to scold me? Twilight interrupted with a huff.

“Well Ms Sparkle, I seem to remember somepony throwing a tantrum in the middle of the library!”

“Well, that wasn't fair, they wouldn't let me have that book!” Twilight threw her hooves wide in excitement.

“It was advanced magical theory, and you was six!” Celestia laughed back, having heard this story many times “It was too complex for a filly your age…well, most filly’s your age! How were they supposed to know you could understand it?”

The group all laughed at that, and the various childhood stories about all of them started to be told. Unfortunately Twilight took the brunt of the embarrassment being the youngest, but Cadence having the odd moment as the elder Alicorn’s had some stories about her dating Shining, and a few ponies before him. All in all, there was a lot of affection and laughter in the room.

After yet another embarrassing story about her studies, Chrysalis cuddled up next to Twilight to give her purple lover some emotional support as she was teased again. Twilight looked into her lovers eyes, and just had three words to say, which she expressed with a passion once reserved only for book “I love you!”

“I love you too Twilight” the changeling responded with a smile.

But Twilight hadn’t finished yet, and took Chrysalis’s hooves in her own “I really do you know, more than almost anything else in Equestria.”

“Aw, you’re making me blush” Chrysalis tried to joke back, but could sense something in Twilight’s voice, as the purple alicorn turned to the other.

“I want to do something, which I will never be able to do around anypony else. If any of you feel uncomfortable…” she clearly looked at her brother at this point “…please speak up right away.”

Twilight stood up, and motioned for Chrysalis to follow her over to the three thrones at the end of the room, gesturing for her to sit in Twilights throne, the one on the right. As the changeling sat down, she felt Twilight change her seating position from the usual pony one to an unusual one that she had noticed a aquamarine unicorn sometimes sat like.

Twilight then lifted Chrysalis rare hooves and slid herself underneath, kneeling on all fours before letting the hooves rest on her back. Only once done did Chrysalis realise that Twilight was acting as a hoofrest.

“Twilight?” the changeling asked nervously, looking around at the others who were looking on with a slight embarrassment, although some had a twinkle in their eyes.

Twilight looked up from the floor “We can never play or express this side of our relationship in public, the outcry would be too much, so if the others don’t mind, just this once I would be honoured to do something like this!”

Cadence was not the princess of love for no reason, and could see how much Twilight adored her partner. She got up and waved the others to follow her and they all brought their cushions with them. As they got over, Cadence turned to Luna “Auntie, do you mind if I use your throne?”

“Not at all!” Luna replied happily. Without warning, Cadence lit her horn and levitated her husband into the Night Princess’s chair in the same position as Chrysalis, before kneeling herself on the ground. Shining stammered for words and could just mutter embarrassedly “Cadence!”

Cadence giggled slightly before replying “Dearest husband, like Twilight says we don’t have much chance to do this sort of thing, and we'll have even less with a foal on its way! I thought it best to take this one opportunity...”

“But your with foal, you shouldn't be down there!” he pleaded back.

Luna trotted over to Cadence. “Niece, please let me take your place” she implored the pink alicorn, who knocked away the offered hoof.

“Please, I’m pregnant, not dying! I think I can cope with what is basically lying on the floor!”

“Okay, but at least put a cushion under you rather than lying on the cold hard marble!”

“There’s really no need, a little discomfort is all part of it afterall.”

“Hey, who’s giving the orders around here? Shining replied with a smirk.

Cadence blushed and stood up to allow a large cushion to be placed under her by shining magic, before lying back “Of course, master.”

As the princess lay back down, she noticed she was facing twilight and despite both of them having their heads lowered, they could see the smile on each others faces. They looked eye to eye, both of them knew that the pony they loved was in a place just as happy as they were.

The remaining ponies and draconequus felt a little awkward, but were satisfied that the ponies they loved were happy in what they were doing. Twilight noticed that Celestia seemed the most in thought and was tempted to ask her if she was okay with this public display. However, the princess of the sun got up and slowly walked towards Discord.

“Discord…why don’t you take a seat in my throne?” she asked nervously, and to everypony's surprise.

The draconequus was a little confused, but decided to take the opportunity presented and sat down in the throne. Celestia approached the throne with her head slightly bent “Discord…I know it’s early days for us…we haven’t even had a proper date, but I thought...wel...it would apt for us to join in!"

Celestia knelt down but before placing Discord his feet on her, he slid down and lifted her face with a claw “Dear sweet Celestia, thank you. I know we’ve had our differences in the past, but I swear I will make you the happiest mare that ever lived!”

He patted her face gently and gave her a peck on the cheek, before sitting back down and gently placing his feet on her back. Twilight saw this happening, the memories of Discords previous acts towards Celestia still fresh in her mind. But she knew that the couple would be perfect for each other as the god of chaos had clearly been reformed, much like her own lover.

Luna sat alone a little awkwardly on the cushion, seeing her sister, niece and the pony that saved her serving two former enemies and a mortal. She stood up with purpose and proudly declared “Well, I might as well join in mighten I?”

There was a flash of light from her horn and once it dimmed the three on the thrones looked over to Luna, amazed at what they saw. Luna was wearing a rather revealing maids costume, along with a tight fitting saddle squeezing her body. On her head she was wearing an ornate bridle that didn’t restrict her mouth. And on each hoof and knee was a locked cuff which were all linked together with chains. None if it was actual bondage, but it was clearly very suggestive.

She walked slowly and carefully over to where a tray of drinks were laid out, the chains restricting the pace and gait of her movement. She turned slowly to the three dominants in the room “Would you like a drink, sirs and madam?”

“Yes please” Chrysalis and Discord replied nervously, whilst Shining just nodded his head shyly. Luna turned back to the tray with a smirk on her face, shaking her hips a little suggestively as she did. Still got it she thought to herself. She carefully picked up the tray with her mouth, and slowly brought it over to the trio.

One by one she bent her next down gracefully for each of them, keeping the tray steady as she submissively served a drink to them in turn. As she bent down for each she could see caught the eye fellow princess, and shared a glance and a smile of happiness with each. Once the three had been served, Luna placed the tray on a table and knelt down besides her throne next to shining. A silence fell over the room, only for Chrysalis’s laugh to break the silience. She looked over to the draconequus sat in the middle.

“This reformed life isn’t so bad really, is it Discord?” she smiled; glancing down at the pony at her feet who she could tell was enjoying the slight humiliation.

“I agree…I mean, all those times we fought the Princess and all we had to do is make them fall in love with us!” he laughed back, smiling down to Celestia who had turned her head slightly to look up proudly at him.

Chrysalis then looked over to the stallion at the end “And its probably even more ironic for you, isn’t it Shining?”

“What do you mean?”

“Well, for years you trained hard to serve the princesses, and now they serve you!” the changeling replied, Discord joining her in laughing at the end

“Yeah, it is pretty strange!” he looked down at the Princess at his feet and the one kneeling next him. “But why are they all submissive? I mean, even you seemed to enjoy it!”

The changing giggled again “I don’t know, it just seems a trait. Do you know Celestia?”

“No, actually I don’t, I just know I’ve always felt this way!” the sun goddess replied from the floor.

“Permission to speak Mistress?” Twilight turned her head to her lover.

“Of course, Sweetie!”

“I’ve actually done some research on this…”

“Surprise surprise!” Discord interrupted with a laugh.

“…and it is a genetic trait. Many, many moons ago, long before Celestia and Luna, there were four pony races - alicorns were born naturally. However, over time due to both having strength, flight and magic they grew a bit snobby and would only mate with other alicorns. However, a plague hit the kingdom that wiped out all the male alicorns, leaving the race on the brink of extinction.”

“Despite this, most of the mares still refused to take a mate, but a number of mares enjoyed the perceived humiliation of being forced to mate beneath them. The stallions of the other species were cruel to them when they did so, making a big deal out of it, and so only the most submissive mares mated, meaning only their genes were passed on. Over time this became an alicorn trait, but the alicorn genes were recessive such that eventually only the three other races remained with the alicorn genetics now unused.”

From her point on the floor she looked over her four fellow alicorns the best she could “When we ascend, these genes are re-activated, making us submissive. I guess Chrysalis is a bit of a switch as she seems to enjoy both…but have no idea why!” Twilight concluded.

“I’m also a switch since my return” Luna spoke up “So perhaps the nightmare and the changeling elements make us that?”

"Thats an interesting though...I'll add that to my research!" Twilight replied happily.

“You switch, with who?” Discord asked the personal question without thinking.

“Oh, I have plenty of fun in our subject’s dreams. You have no idea how many dream about us four princesses…stallions and sometimes mares!”

“That, I did not need to know!” Celestia blushed a little.

“Oh come now, really?” Chrysalis teased.

“Actually, the thought of being dreamt about is a little…titillating!” Celestia admitted a blush visible to Twilight and Discord who could see her face "But still, how can I look at any of them again?"

"The guards are the worst I'm afraid" Luna sniggered in reply.

"Hey, they better not be thinking about my wife!” Shining mock protested.

“Actually, all I’ll say is none of the Crystal Pony’s think of their Princess that way. They only see you two as these perfect saviours…who brought, wait how do they say it, oh yes… The Great and Honourable Spike the Brave and Glorious to them.”

Everypony burst into laughter at this before another silence fell over the group as the three dominants thought about the situation they found themselves in. Chrysalis stretched out on the throne “Actually, I could do with another drink!”

Luna smiled and slowly the chained alicorn walked over to the changeling, the chains clinking in the quietness as she delivered the tray of drinks as before. Chrysalis took a big swig and sighed loudly “Yes, life is good!”

Author's Notes:

Sorry for the short chapter, but I had this scene and a prologue left to do and decided to finish with them. Whilst I could keep this fic going, I'm happy that this has run its course now (seriously, I saw the word-count!)

I will soon be finishing up some of my pending stories before starting others, but in terms of adult stories, I have three more planned so keep an eye out for them:
A mane 6 one-shot
A Sparity one-shot
A long Sparity story