Twilight Velvet walked down the stairs of her lavish home, heading toward the door due to somepony rapidly hammering on it, which she opened to find a familiar young unicorn standing on her doorway. “Sunbeam, well isn’t this a surprise, why don’t you come in dear.”

“Thank you,” said Sunbeam, walking and going over to sit down on the couch, still breathing hard from all the running she had done.

“You alright dear, you look like you just ran a marathon, anything you want to talk about?”

“Kind of, I just escaped…just left the company of your daughter, who I have been dating for…, for some time now.”

Velvet nodded, not at all surprised. “She sent us a letter about you awhile back; I must say it is nice that she has a filly friend to distract her from her studies, though by your body language I can tell something must have happened, care to share?”

Sunbeam gulped, looking nervous as she spoke. “well you see, it seems that…that Twilights heat cycle has started up, and she has been acting rather…aggressive towards me, I wanted to know if you had any advice on how to deal with her during this…turbulent time of hers?”

Velvet looked at her a moment, then gave a soft chuckle. “The only advice I can give you is prepare an all-night bag, because I am afraid my little Twi can be quite stubborn when she wants something, and coupled with heat, I would say you might as well resign yourself to the fact you are going to be little more than Twilights play thing till her heat has ridden out.”

Sunbeam stared at the mare as she took a sip of tea, beginning to sweat as she thought of what awaited her back at the palace. “Are you sure there is nothing you can do to help, I really don’t want to go back there…”

“I am afraid there is nothing I can do, you will just have to accept your fate and submit to her demands. Believe me you will be better off in the long run, if she is anything like I am when I go into heat.”

Sunbeam gulped again, and then nodded, getting up to leave. “Well, thank you for your time Miss Velvet, I best get going.”

“You take care dear, and say hi to Twilly for me ok.”

Sunbeam nodded, and then left the house, heading down a dark alleyway before letting her disguise drop, becoming the princess of Equestria once again. After taking a moment to collect herself, she quickly teleported to the balcony outside her bedroom, stopping just in front of the door and placing her hoof on the door. “Come on Celestia,” she berated herself, “you are the Princess of Equestria, the goddess of the sun, you do not have anything to be afraid of beyond that door, even if it happens to be the only mare in Equestria that can make you grovel worse than your own hoofmaidens.” She quickly steeled herself once again, and then opened and stepped inside her darkened room.

As soon as her tail passed beyond the threshold she realized her mistake, for it immediately slammed shut behind her, and then she felt her back hooves yanked out from under her, spinning her about and dragging her over to the large bed in the center of the room. As soon as she reached the bed she was flipped onto her back, landing on the bed as a young mare came walking out of the shadows, her eyes glowing as brightly as her horn as she climbed onto the bed, sitting down next to Celestia as she gazed at her with a hungry looking expression.

“Hello Tia.”

“Hello Twilight,” said Celestia nervously, trying but failing to move her legs as Twilight slowly traced a hoof along her chest.

“So,” said Twilight, letting her hoof drift a little lower as she spoke. “Where did you run off to this morning, you know it’s really rude to leave a mare while she is in the middle of her estrus cycle?”

Celestia had to repress a moan as Twilight dug her hoof in between her legs, trying to hold her concentration so that she could speak to Twilight. “I...I went to see your mother, to try and...and see if there was anything she could tell me to help you with your heat.”

“Oh really,” said Twilight with an evil grin, “and what did she tell you?”

Celestia had to fight hard to repress another moan, damning herself for letting Twilight get to know her so well, but she answered all the same. “She...she said I was pretty much your plaything!”

Twilight giggled as she removed her hoof from between Celestia’s legs, licking said hoof and shivering due to the taste. “Very good my naughty little student, I think that deserves a little reward.”

Twilight then turned around, picking something up before turning back to Celestia, causing her eyes to widen with both a mixture of fear and desperate need. Clutched in Twilights hooves was a golden trimmed white box, and inside that box was everything Twilight needed to bend the Princess of Equestria to her will.

Twilight grinned, relishing in the look her lover had on her as she opened the lid, extracting the first item with her magic and then setting the box down, walking around till she was next to Celestia’s head. She moved Celestia’s mane away from her horn, removing the wedding band from it and replacing it with a magic dampening ring, smiling at the shivers she saw course through her mare’s body.

She then walked back to the box, looking inside before extracting the next item, and then she closed the box and set it back down on the floor. She knew she could have grabbed more, but she didn’t really want to use every item inside the box, she had neither the time nor the patience today to apply each item.

She moved back to the Princess, using her magic to lift her back legs so that they pointed straight into the air, and then moved her tail aside, getting a nice view of her puckered ass. Twilight grinned, bringing the butt plug out from concealment and inserting it slowly into the princess, causing Celestia to cry out with joy.

After giving Celestia time to adjust to the toy, she finally let go of Celestia’s legs, letting her just lay there as she built up magic for her next spell, for she didn’t need to restrain her any more. After a quick bit of calculation she cast her spell, licking her lips as Celestia’s marehood was transformed into a thick piece of stallion meat.

She gave it a thorough once over, her mind comparing it to the one she liked to use on Celestia when they were alone. Strictly speaking, Twilight’s was bigger, but that was because she had to compensate for Celestia’s size, for she was much larger than the average pony. In the case of Celestia’s, it was about the size of what most ponies would consider a “healthy specimen”, and she planned to use it till her heat was good and put out.

Wasting no time, she quickly climbed on, sinking herself onto Celestia with a long drawn out moan that echoed around the room, bracing herself against Celestia with her forehooves before lifting up her hips, holding them up for a moment before slamming herself back down.

“OH YES!” cried Twilight, her back arching as the sensations of pleasure coursed through her body, not even noticing that Celestia was starting to move of her own accord. without warning Celestia grabbed her, rolling them both over so that she was on top and staring down at Twilight, who was smiling up at her.

“Wanted to be on top for a change?” asked Twilight, giggling as Celestia nodded her head. “Well go ahead, my body is all yours my princess.”

Celestia smiled, and then quickly began thrusting into her lover, knowing her need and deciding that the quicker they did this, the better. She built of a steady pace, causing Twilight to moan louder and louder with each thrust, till it finally got to the point where she was getting too loud and she quickly cover her mouth with her hoof, only to have Twilight start to lick it and make her pull it away, for she had sensitive hooves.

She kept at it a bit longer, occasionally leaning down to kiss Twilight when her moans got too loud. Eventually however, Celestia started to feel a familiar pressure begin to build in her member, and quickly leaned down to alert Twilight. “Twilight, I’m close!”

“Inside, I need it inside!”

Celestia nodded, thrusting in a few more times till she burst, coating Twilight’s insides with gush after gush of stallion seed as she writhed and screamed in ecstasy. After a few more weak thrusts Celestia finally stopped, pulling slowly out of Twilight before collapsing next to her, breathing hard as the young mare nuzzled close to her side. “Do...don’t fall asleep...just yet...I’ll need you in a moment.”

Celestia barely had energy to gulp, shivering as she looked at the mare beside her. It was definitely going to be a long day.

Author's Note

That was fun to write, next chapter will be going back into the story, and will reveal Celestia's true reasons for sending Twilight into Ponyville. As always I hope you liked the chapter, and if you have any questions or comments, please feel free to drop them on by.