Twilight sat comfortably on her couch with Sunbeam, them both snuggled up close and reading the latest Daring Doo book as Spike walked into the room. “Oh gag,” he said, “could you to get a room or something, some of us are trying to clean.”

Sunbeam giggled at that, “Sorry Spike, but I rarely get to spend that much time with Twilight as it is, so you will just have to get used to seeing us cuddle.”

Spike groan, then tapped Twilight on the shoulder to get her attention. “Well remember Twilight, you promised that we could go watch the Running of the Leaves, don’t forget ok.”

“I won’t spike, well get going when it comes time ok?”

Spike nodded, and then left as Sunbeam looked up with a raised eyebrow. “Wow, I forgot it was the Running of the Leaves today, you running,” she said, looking down at Twilight.

“No,” said Twilight, “I’m just going there to watch the event, I don’t really want to participate myself.”

“Oh I think it would be rather cute if you participated, I’d even provide you incentive to run if you agreed to do so.”

Twilight raised an eyebrow, “what sort of incentive are you planning on providing eh love?”

“Oh I don’t know-” said Sunbeam with a grin, thinking of every word Twilight liked to use to describe a certain part of her anatomy. “-maybe a healthy looking unicorn rump, bouncing just ahead of you at an easy pace to keep you on your hooves, would that be incentive enough?”

Twilight gulped, her eyes drifting down to Sunbeams rump as she unconsciously licked her lips. One of the many benefits of Celestia’s Sunbeam disguise was that, while her rump was indeed smaller, it still looked as healthy and as delectable as her full grown one was. “Well,” she said, “with an incentive like that, how can I refuse?”

Sunbeam giggled, drawing her into a kiss before giving her another look. “And you know what, I might as well sweeten the deal, you know those spread bars and ball gag you have in "The Box?”

Twilight’s eyes widened in shock, not believing her ears as she kept her eyes locked on the princess. Her precious spread bars and ball gag, the only items in “The Box” that Celestia had yet to let her use, due to many reasons. “W…what about them?”

“Well how about this, if you manage to beat one or more of your friends in the race, then I will allow you to use them on me, no complaints.”

It was an impossible task to ask, she knew she could never beat Rainbow Dash or Applejack in a race, and they were the only ones joining the race out of all her friends. But how could she say no to that promise, for it would allow her to live out one of her greatest sexual fantasies involving her beloved.

Sunbeam could see that she was struggling, so she decided to hammer the last nail into the coffin, which would seal Twilight’s fate for the entire day. “Oh and just to spice things up, I’ll wear a butt plug for the entire Running of the Leaves.”

That did it, Twilight’s will crumbled like cheap concrete, “O…ok, just…just make sure you keep your word if I win ok.”

Sunbeam smiled, “cross my heart, hope to fly, stick a cupcake in my eye.”

Twilight gulped, for that kind of promise meant only one thing, the princess meant business.

Twilight walked up to the starting line, a scroll held in her magic which quickly vanished once she reached the line.

“Twilight, what in tarnation are you doing up here?” asked Applejack.

“I’m racing!”

Rainbow burst into laughter, punching her in the shoulder as she choked a few words out, “Good one Twilight”

Twilight glared at her, “I’m not joking.”

Rainbow’s eyes widened at that, “what, you’re not an athlete. You’re a…well…egghead.”

“I am not an egghead, I’m well read,” she said.

“Egghead,” Rainbow whispered, causing Twilight to glare at her and Applejack to giggle.

“Have you ever run a race?” asked Applejack.

“Well…no,” said Twilight, causing the girls to giggle again. “But I do know a lot about running.”

“And you know this from…?”

“Books,” said Twilight, “I’ve read several on the subject.”

With that Rainbow fell onto her back laughing, looking up at Twilight as she spoke. “Whad you read, the eggheads guide to running! Di…di…didya stretch out your eye muscles to warm up!” she then laughed, walking in front of Twilight before falling back down to the ground. “Get it,” she said, pointing at Twilight’s scowling eyes, “eye muscles!”

“Scoff if you must Rainbow, but The Running of the Leaves is a Ponyville tradition, and since I’m here to learn, I’ve decided I should experience it myself. Besides,” she thought, “It’s not like I won’t have something to keep me motivated.”

“Well I think that’s just dandy Twilight,” said Applejack, “good luck.”

“Yeah,” said Rainbow as Applejack tried in vain to repress her giggles, “see you at the finish line, tomorrow.”

Twilight just shook her head, then smiled when she saw a certain pony sidle up behind her, getting ready along with the others and then taking off with the other competitors, keeping up with them a good distance before falling into a healthy trot as Sunbeam came up beside her.

“Hey you,” said Sunbeam, licking Twilight’s nose as they walked and then trotting ahead, falling in in front of her and letting her get a healthy look at her rump. “Make sure you keep up ok, and just keep your eye on the prize dear, I will carry you to glory.”

Twilight licked her lips and nodded, following Sunbeam along, till she noticed Sunbeam jump into some bushes and out of sight. “What the…” started Twilight, until she noticed Applejack standing on the path ahead of her.

“I don’t believe it,” said Applejack.

“I know,” said Twilight, “its beautiful isn’t it?”

“It’s not the scenery Twilight, Rainbow Dash just tripped me!”

“No she did not.”

“She did to,” said Applejack.

“She did not,” said Twilight, “and if you had slowed down and looked where you were going like me, you’d see that you had tipped over a rock.”

“What,” said Applejack as she looked back, “ah hayseed.” She then looked ahead, panting as she spoke again, “now I got a lot of ground to make up if I want to catch Rainbow.”

“Just be careful,” said Twilight as Applejack took off, before beginning to trot again and look around.

After a bit of trotting Sunbeam finally decided to re-appear, moving close to nuzzle Twilight lovingly as she fell into stride with her. “Nicely handled dear, I couldn’t have handled it better myself.”

“Thanks Sunny, now get your rump back up there please, after all it is the reason I came here.”

The kept up their game the entire race, Twilight following Sunbeam’s rump almost religiously the entire time, and Sunbeam occasionally jumping out of sight as she spotted either Rainbow Dash or Applejack. Now however they were sprinting toward the finish, having left both Rainbow Dash and Applejack far behind, which only got Twilight’s adrenaline pumping more.

“YES YES YES YES YES!” she screamed inside her head, her eyes glued to Sunbeam’s rump as they made it across the finish line, stopping next to the other ponies who had finished and getting a pat on the back from Lyra.

“Way to go Twilight,” said the mint green mare, “I was surprised when I saw you in the lineup, didn’t expect you to get so far ahead in this race, especially not fifth place.”

“Well,” said Twilight with a grin, looking back at Sunbeam and giving her a wink. “I paced myself reasonably well, and I also had a really good piece of motivation keeping my adrenaline pumping.”

Lyra looked from Twilight to Sunbeam, and then gave them both a broad grin. “You sly dog, I didn’t know you were a fillyfoller, congrats.”

Twilight giggled; turning and seeing Sunbeam walking off toward Ponyville, “hey Sunny, where are you going?”

Sunbeam turned to give her a look, “I thought I would go home and change into something more comfortable, I will see you later ok.”

Twilight knew differently, knowing that the princess was expected to appear to congratulate the winners of the running of the leaves, but she nodded all the same, watching her disappear in a flash of magic and feeling her presence reappear just a few yards away. So she decided to stand around and wait, grabbing her medal and placing around her neck, smiling as her mind drifted to what was to come later, she could so not wait to get home.

Celesta and Twilight walked side by side, Twilight trying to contain her excitement as they made their way into library, Twilight closing the door and then motioning for Celesta to follow. She led the way down to the basement of Golden Oaks, which was unusually sparse save for a few decorations, which included several lit candles, several reddish-pink pillows arranged in a circle, and “The Box” set up at the back end of the circle.

“Get yourself ready in the middle there my love; I shall start sorting out the items I shall be using for this evening.”

Twilight went to move forward, but then saw the hesitation in Celestia’s eyes. “I don’t know Twilight,” said Celestia, “I…I’m scared.”

Twilight then did something rather unique, getting up on her hind hooves and giving a hug around the princess’s neck, and then turning around and walking a few steps away on her hind hooves before turning back around and speaking. “It is alright Tai, nothing will be able to touch you as long as I am here, you are perfectly safe with me.”

She then lifted up her right fore hoof, extending it to Celestia as a shadow fell over her eyes, and then she spoke.

Celestia could not speak after that, but she slowly nodded, taking off her regalia and setting it aside as she moved into the center of the circle of pillows, getting her body into position as Twilight returned to all fours and then laid down behind her, putting on a pair of pure black socks and a collar as she gazed up at Celestia’s beautiful rump.

Her horn lit up then, opening up “The Box” and then setting to work, laying out all the toys on the various pillows and then moved onto the last items in the box. First came the spread bar, which attached to the lowest part of Celestia’s back legs and keeping them well spread apart, as well as binding her fore hooves so that she could not move them. Next came the wing strap, which wrapped around her body and bound her wings to her sides, keeping them from fluffing out to even a little. Then came a ball gag, which Celestia took almost lovingly into her mouth as the straps gently tightened, securing the ball gag so it couldn’t be spit out. Last, but certainly not least, came the horn ring, which was secured to Celestia’s horn over her wedding band, cutting off her magic and leaving her completely and utterly powerless.

Celestia could already feel herself growing wet, but just as she started to enjoy the feeling of being utterly helpless, she squealed past the ball gag as she felt something smack against her back side, which if she wasn’t mistaken had been a crop. “my my princess, what a naughty filly you are, getting all excited by being bound up like this, what would your dear little ponies say if they saw you like this?”

Celestia moaned at that comment, feeling Twilight strike her again with the crop but this time ready for it, the pain transforming into pleasure for her even though she had no magic to do so. Twilight gave her a few more good whacks, leaving each side of her rump red and tender before levitating the crop away from her princess. “And now, the main event.”

Twilight got up, walking forward and placing her face on her teachers beautiful rear, smiling to herself as she began to give it little bites and nibbles, causing the princess to gasp and moan around the gag due to her ministrations. She then moved lower, nipping around Celestia’s heavenly entrance but never actually touching it, knowing that while her princess wanted to be touch there, she was enjoying more the slow torture’s pace that Twilight was setting, and so she kept up with her slow ministrations.

Celestia moaned, her mind awash with pleasure as Twilight kept up her work, her eyes becoming glassy as she fell within herself. She wondered what would happen if her little ponies did find out, thinking of all the possible ways they would react to the many implications her relationship with Twilight would hold for them. She already knew how one pony would react to the site of her trussed up like this, imagining the scornful eyes of her sister Luna as she scolded her for her behavior.

“It’s not my fault,” thought Celestia, “I have been the sole ruler of Equestria for a thousand year, and a co ruler alongside my sister for longer than that. I just want to let go, I want to be ruled, and Twilight can provide me that. After all, it was she that opened up my eyes to this world of pleasure; she deserves the privilege of ruling me."

Twilight finally let up with what she was doing, causing Celestia to wine till Twilight smacked her on the rump with a hoof. “None of that princess, you serve me now, and I decide how it is I pleasure you.”

She then moved in front of the princess, Celestia noticing she had already used the futa spell on herself as the heavenly organ bounced merrily below Twilight’s body. Twilight then proceeded to remove the ball gag, smiling lovingly at her as she leaned down to give the princess a kiss, and then she looked deep into her eyes. “Do you want me to fuck you my naughty student, do you want me to drive my thick stallion cock deep into your depths, and drive you to the heights of pleasure only I can give you?”

Celestia nodded as best as she could, her mouth drooling as she spoke to her stallion. “Please! Take me! Use me! I am yours to do with as you will, and my only desire is to please you, so please take me…my stallion!”

Twilight shivered, and then shoved her length into Celestia’s open mouth. “As you wish my princess,” she said, and then she proceeded to fuck Celestia’s throat.

Celestia moaned around the invading organ, her tongue doing its best to lather up the bottom part of Twilight’s length, occasionally meeting with her balls and giving them a quick tickle before Twilight drew back.

Twilight was just beginning to feel the sweet kiss of release begging to build when she heard the lock upstairs click, and she suddenly hilted in her lover’s mouth, blowing her load in surprise as a voice wound its way into the room.

“Sister, we heard from some other ponies that thou had come here with…”

Celestia’s eyes widened in shock, flying to the doorway at the top of the steps to see Luna standing there, her face going from shock to horror to anger as it turned from Celestia to Twilight, who waved a hoof at her as a sheepish grin spread across her face, “H…hi princess.”

Luna waited patiently in the main room of the library, trying to contain her anger as Twilight and Celestia cleaned themselves up and put away their…“toys,” as they had called them.

Finally she heard the door behind her open, and watched the two exit looking refreshed and completely clean. “Twilight, leave us,” said Luna; waiting till the pony had retreated to the room upstairs before looking back at Celestia.

“Luna I can explain…”

“We don’t want thou to see her anymore,” said Luna flatly, shocking her sister with her words.

“Wh…what?”

“Thou heard us,” said Luna, “we don’t want thou to see her anymore, she is not good for thee.”

It was Celestia’s turn to glare, “don’t you dare say that, what Twilight and I have is special…”

“SPECIAL!” roared Luna, glaring at her sister as her eyes began to glow with anger. “HOW CAN THOU CALL WHAT WE JUST WITNESSED SPECIAL, SHE HAD THOU TURSSED UP LIKE SOME COMMON WHORSE!”

“THAT’S BECAUSE I ASKED HER TO DO THAT TO ME!” Celestia yelled back at her.

Luna stared at her in shock, the anger having left her face as she opened her mouth to speak, “wh…what does thou mean thee asked?”

“Luna, I…I have been the sole ruler of Equestria for a thousand years, when I was meant to rule by your side. I have long felt the weight of this country on my shoulders, and what you saw in there, what Twilight and I do, it’s my escape, it’s my way of letting go and dropping the mantle of ruler to be ruled by somepony I love. That’s what I let her do when we play those games sister; I give her control and make myself hers…so that she can rule me.”

Celestia then got up; walking toward the stair to Twilight’s bedroom, which caused Luna to look at her with surprise. “Thou art going to her?”

Celestia nodded, “I don’t mean to be blunt sister, but your little interruption left me in wanting, so I will be remaining here till the morning. I promise to talk about this more with you later, but right now I wish to be alone with her, so please…leave us.”

Luna hesitated a moment, but then finally nodded, getting up and leaving as Celestia entered Twilight’s room, going over to the young mare and giving her a kiss before falling into her embrace.

Author's Note

Fun Story Fact: I actually had to look up an article on bondage equipment to find out what Spread Bars were called.

Twilight and Tia just can't catch a break now can they, first Cadance catches them when Celestia is in heat, Luna catches them when Twilight goes into full blown mistress mode, Twilight's parents will catch them some time during Hearths Warm...*claps hand to mouth* shit...pretend you didn't read that! As always guys I hope you all enjoyed the chapter, and if you have any questions or comments, please feel free to drop them on by.