Celestia had managed to persuade Twilight into joining her for an exclusive trip to the Canterlot's finest spa.
Twilight, a small filly and not outgoing at all had no idea about what to expect about such a trip, but Celestia, her dear mentor, on the other hand, knew just what she wanted to do.
They had already gone through two massages and had just floated around at the small private pool of the spa.
Celestia, smiling contently as she felt the tension in her neck finally soothe in the delicate caress of the water.
Twilight on the other hoof couldn't seem to get relaxed in the water, which was understandable since the spa wasn't exactly designed with small fillies in mind, so she couldn't sit at the pool.
Celestia noticed that her student couldn't seem to be able to enjoy the relaxing water since she had to constantly stand on her hind legs and lean against the wall of the pool to keep herself in a position that at least she didn't need to swim in to keep her head over the water.
Even though the position was mildly uncomfortable for Twilight, it brought shameful joy to Celestia, her eyes catching occasional glimpses of her students behind.
Celestia had one thing left in mind she would love to show her student.
"Shall we head to the sauna Twilight?" Celestia intrigued, knowing full well her student didn't probably know what it was.
"Uh, excuse me Princess, but I don't really know what that is?"
"Oh, no worries, you'll love it when you get to try it, lets go."
"Well, if you say that it is worth trying Princess, then sure."
Celestia rose from the tub and helped Twilight from the pool by creating magical stepping stones for her.
"I have never seen anything like those Celestia, how did you make them?"
Twilight asked as her eyes glinted at the possibility of learning something new.
Celestia took the lead as they started walking to their reserved sauna, talking while they made their way over.
"I simply created something solid with my magic. Honestly, learning how to cast the spell in the first place is what makes it so hard. The spell itself takes a little to master and it doesn't take much effort to maintain it. We might have a look at it back at the Castle later." Told Celestia, lecturing her student.
"Aww, could you at least show me something else that you can make with your magic?" Twilight pleaded with wide eyes.
Arriving at their destination, a small door which said; 'Steamroom, Sauna'.
Celestia opened it and promised she would show something using that magic soon.
Twilight followed Celestia into the wooden building inside the building. The relaxing heat creeped into her, taking her by surprise.
"This is, interesting. The heat feels so... Relaxing."
"Indeed my Twilight, I always have loved these for their rustic feeling and the relaxation they provide."
Celestia climbed a few steps up, sitting upon the highest of the three steps.
Twilight followed her, noticing instantly how much warmer it was on the highest of the steps as she sat next to Celestia, already starting to sweat a little.
Celestia faced her student and looked her straight into her purple eyes.
"So, you wanted another example of the spell I use to make solid objects out of magic?" Celestia asked, never taking her eyes off her student.
"Well, yes, that would be really interesting to see, princess." Twilight nodded.
"Come, Twilight, sit on my lap. I want you to see this up close." Celestia said with a small smile.
"Eh, well... Okay." Twilight said, with a bit of a curiosity in her voice.
She got up from the step, just now noticing how sweaty her bottom had became.
Celestia leaned against the wall, and spread her legs open, and beckoning Twilight closer with a wave of her hoof.
"It's okay Twilight, I know you are a bit sweaty, it doesn't bother me at all. In fact it might just make this easier."
Twilight carefully moved over to Celestia's leg, and sat herself on it. She couldn't help as she quickly glanced between Celestia's legs, seeing her marehood. She immediately blushed and averted her eyes, silently apologizing to Celestia for her behavior.
"It is okay Twilight, its completely natural and part of a mare." Celestia assured Twilight.
"Now, for the example," Celestia said as her horn started to emit a faint light and an odd hum which Twilight hadn't heard earlier.
As Celestia released the spell, a small, yellow light, the color of her magical aura appeared between her hind legs.
Shortly the aura disappeared and left a phallic shape in its wake, which Twilight recognized as a body part only stallions were supposed to have.
That was as far as Twilight knowledge went, she had only seen an image of a penis in a book, and after seeing it she was too embarrassed to read more about it.
Celestia noticed the surprise on her students face, and she assured her that there was nothing wrong with it.
Celestia's magical stallionhood wasn't exactly large, not even big, maybe just under a medium size, but enough considering what she was going to use it for.
"Twilight, why don't you help your dear princess with a small thing?" Celestia softly asked Twilight.
Twilight seemed to ponder on the question knowing it had something to do with the magical phallus.
"What is it?"
"I am old, as you know, and I haven't had a chance to enjoy myself with anyone I know."
"What do you want to do?" Twilight asked, curiosity clear in her voice.
"Well I thought I could show you a few new things." Answered Celestia, still holding her sly smile.
Twilight just nodded, trusting in her teacher.
"Thank you, Twilight. I promise you, it won't hurt."
With that, Celestia lifted Twilight with her hooves, turning her around and lowering her next to her on the step.
Twilight didn't know what to think, but decided to stay quiet and only say something to Celestia if she felt like she couldn't take whatever she was going to do anymore. After all, this might be a test, and she wanted to make sure she got an A on it.
Celestia lifted Twilight's tail with her magic, granting her access and vision into every fillies most private place.
Taking in the sight before her, staring into Twilight's sweaty bottom, seeing her small purple lips and her tight puckered hole, glistening with the sweat that the hot air caused.
Celestia felt herself growing harder, staring at her young student.
She knew full well that her student still was a virgin, as was every filly and stallion of her age. She was not going to take that away from her.
Celestia's gaze shifted from the purple lips into her student's tight, small, puckered hole. She had planned this, and the reason why she decided to do this in the private sauna instead of her bedroom was that Twilight would be more relaxed in here.
The princess wasted no time, pressing her tip against the sweaty anus. Twilight gave a small gasp as she felt it, but remained quiet otherwise.
Slowly, Celestia started to apply pressure on the tight pucker with her hard cock.
She felt amazing as she started to penetrate her student's young and petite anus, feeling her student's, her Twilight's ass stretching to accommodate her hard dick.
Twilight remained quiet during this, but it didn't bother Celestia. She was too focused on stretching her Twilight's virgin ass to pay attention to details.
Suddenly, Celestia pulled nearly out and drove right back into the tight anus. Twilight have a small yelp as she felt her pooper being stretched.
Celestia's dick was already nearly in, and she pulled out almost completely again, and pushed her rod all the way in, Celestia's large hips colliding with the fillies buttocks, emitting a quiet slapping sound.
She stayed fully inside for a bit, felt how her Twilight's ass wrapped around her hard dick.
Slowly, but surely, Celestia started fucking her student anally. Twilight was lying on the highest step, while Celestia was standing on the second step. Holding her fore hooves up on the highest step.
Celestia kept her fore hooves against her student's shoulders so she wouldn't slide away into the wall as she continued to fuck her ass faster and faster, and with each thrust her hips slapped against her student's with a loud and a wet slap.
Celestia looked at her student, just lying there, her head in her hooves, mane and tail matted in sweat and her fur glistening with it.
The thing which made Celestia feel even better was that her Twilight hadn't complained at all. She was just lying there, taking her mentor's dick..
Celestia felt herself getting closer, but didn't want to release her load yet.
Taking her fore hooves away from Twilight's shoulders she moved them over her butt. She pressed against her ample cheeks and pulled completely out, looking upon her student's loose anus, gaping. And everything was because of her mentor taking her anal virginity and stretching her wide open.
Celestia felt herself getting closer and closer just by thinking it, what had she done to her number one student, who was just a young filly who got her cutie mark only recently.
She couldn't take it anymore and pushed her dick into Twilight's ass before it could close.
Twilight gave a small gasp as she was surprised by her mentor sticking that thing into her sore pooper again.
Celestia went all the way in, slapping her hips against Twilight's loudly. Feeling Twilight gasp and clench her ass, have Celestia the last push she needed.
Magical semen exploded out of Celestia's rod as she moaned, filling Twilight's small anus and some of it even leaking into her stomach.
The princess pulled out of the loose ass, and watched as it tried to close itself, semen dripping out of it.
As Celestia watched at the sight before her, she realized that maybe she had gone too far. She quickly dissipated her phallus, and sat next to her lying student, meeting her eyes.
"Princess... Did I, pass the test?" Twilight asked meekly.
Celestia just averted her eyes a bit from the fillies questioning gaze.
Deciding that she would take any other option than telling her student what it was all about, she decided it was for the best to lie just a tiny bit. "Yes, Yes you did Twilight, you passed it and got an A."
At that Twilight gave a meek smile at Celestia and rested her head against her hooves again.
Carefully, Celestia took her student upon her back, and carried her out of the now cold sauna.
Sparing a last, quick glance around the sauna that she had dissipated most of the fluids in the room as she got rid of her phallus. Satisfied with the results, she teleported out of the spa with her student.
Her Twilight.
Author's Note
First fic, judge me harshly.
