The night was young but the day had felt like an eternity. Twilight was resting by Princess Celestia while the town of Ponyville and the yak diplomats celebrated their newly formed friendship. Celestia looked on proud of what her little ponies had done for themselves while Twilight couldn't take enough deep breaths to relieve the leftover stress from the day. The elder princess chuckled at the antics of her former student but did feel a bit sorry for what the rest of her night entailed.

“Are you happy with how things have gone tonight Twilight?”

Twilight looked at her mentor curiously. “Seeing as how we've been able to make a connection with a group as secluded and as... touchy as the yaks, I definitely consider today a win.”

“Even with your other duties tonight?” Celestia inquired.

The other alicorn pondered for a moment over what Celestia could've meant. Maybe the yaks were leaving and she had to see to their departure. Could it be that there was a ceremony yet to be performed that she played some integral role in? None of her books said anything about additional roles she would have on a night like this. She looked at her counterpart perplexed as to what she could be referring to. Said counterpart smirked a bit, whether out of mirth or awkwardness was unclear, but what she had to say was something that she took great joy in.

“As the coordinator of Prince Rutherford and his officials visit to Ponyville it is your duty to ensure that his night goes a certain way.”

“I'm sorry but I don't follow.”

“What I'm saying is that you're going to have to copulate with Prince Rutherford.”

“. . I BEG YOUR PARDON!? Princess, you cannot be serious. I've never even had a coltfriend before let alone a lover.” Twilight harshly whispered her last sentence.

“I'm not joking Twilight Sparkle this is a responsibility you must abide by as your position dictates. But keep an open mind, it might not be as bad as you think.”

Acting before Twilight could even muster a syllable Celestia took off to enter the party. The purple princess stared at her mentor with unbelieving and inconsolable eyes. Thoughts a thousand raced in her mind. Her eyes danced in front of her looking at the party goers inevitably ending at Prince Rutherford. The yak was a monster of a creature. He stood at over seven feet tall and his thick fur served to only make him look bigger. While previously in the day his stature and violent attitude added to his intimidating visage, Twilight saw a new being during the party, one that wore a smile a mile long and seemed to enjoy the company of others. True his horned helmet and eyes that were seen ever so rarely brought about an unusual intensity something was different this time around. Not that it mattered at this point. If there was something that her teacher said Twilight had to do she would do it.

'Albeit reluctantly.'

Through the dimly light corridors of her crystal castle, Twilight sat in her chambers awaiting her suitor. The room was bare similar to the rest of the castle. A cold crystal floor free from any personalized touches. In one corner of the room sat her trusty telescope that she used to look at the stars from one of her many ceiling touching windows that lined the room. At the opposite end sat her bed that was accompanied by two pillows and a simple lavender blanket. The bed began and ended with a golden headboard that twinkled with the slightest amount of moonlight. Above her head was a canopy that echoed the crystal flooring and its princesses color. Next to the bed sat a simple nightstand with a lamp donned atop.

'I can't believe the lingerie Rarity made is actually coming in handy. I can hear her now, See darling, there's no occasion Rarity can't make an outfit for.' her thoughts elicited a chuckle from her lips.  A bit of levity for a situation Twilight never imagined herself in. She sat on her bed dressed in an alabaster lace bra and garter belt lingerie. Twilight's modest bust was accented well by the placing of transparent on non-transparent fabric leaving enough to the imagination to leave her size irrelevant. The garter belt did well to accentuate her hips that definitely betrayed her schoolgirl persona. Her fishnet stockings hugged tightly to her thighs so her skin appeared to be eating the clothing. She did feel a bit awkward as her toes wriggled in the fishnets

'These panties are giving me a wedgie.' she also thought as she constantly adjusted herself. A sudden chill ran down her spine as a seemingly random wisp of cold air entered the room. She turned to her window and was shocked when she saw it was snowing.

“Who in the world ordered a snowstorm at a time like this?”

It was then she heard heavy footsteps in the distance closing in on her location. She gulped preparing for the worst. At the last second, she posed in the 'sexiest' way possible, which turned out to be lying flat on her bed.

“Uh, is purple princess here?” a deep voice asked.

“Yeah, I'm over on the bed,” Twilight responded meekly. The heavy footprints started back up until they stopped at the foot of Twilight's bed. Tilting her head up ever so slightly she was greeted by the sight of Prince Rutherford staring back at her unflinching. Normally yaks didn't wear any clothing because their fur covered the entirety of their bodies, which lead to some mild confusion on Twilight's part. Had he come here for what Celestia had said, or was there something else. “Um, hi?”

“Purple princess?”

“Yes? I mean, yes. It's me, Prince Rutherford.”

Not another second of hesitation was had as Prince Rutherford dropped to his knees, which landed him on the bed, and immediately began stripping Twilight of her delicate undergarments. The princess tried to ask what was happening but she was too slow to comprehend the situation and before she knew it she was bottomless in front of the prince. Twilight yelped as Rutherford took her bottom half and rested her legs on his shoulders. The next thing Twilight knew a long, wet appendage had snaked its way inside her.

She gasped as the foreign entity worked itself back and forth in her virgin caverns. It felt so intrusive but at the same time so very good. Whether it was the suddenness of the situation or the situation itself something made Twilight cast her away from her inhibitions and melt into this newfound ecstasy. Pumping every slightly faster Rutherford hummed in delight seeing the purple ponies' expression of lust. Closing the distance between his lips and Twilights, Rutherford clamped onto the princesses tender pussy and hummed loudly. The vibration pushed Twilight further into her lustful haze. She moaned louder and louder with every passing second until her body reached its limit. Her body gyrated sending ripples throughout her flesh, a loud uncaring scream followed suit as she climaxed around the tongue of the yak prince.

While she was being lowered gently back onto the bed her deep breaths heaved her breasts up and down, tantalizing the yak further. Lost in her haze of pleasure Twilight didn't notice Prince Rutherford expose his yak pride. Gently he lowered his girth on top of the still twitching purple pussy shocking Twilight out of her haze. Her gasp echoed in the chamber as small dribbles of saliva fell down the side of her mouth.

“Is you ready?”

The purple princess nodded weakly. Rutherford began lightly grinding his length against the tender clit of Twilights causing him to moan quietly and Twilight to squirm while gripping the bedding tightly. He then entered the wet cavern that eagerly his arrival creating a rippling sensation between the two of them. It started as gentle thrusts as the two royals enjoyed their respected sizes. A slow, wet slapping sound was the predominant sound in the chamber as Twilight bit down on her lip and Rutherford was too focused on his task to give into pleasure completely. The thrusts increased in pace and Rutherford leaned forward kneading the pony's breasts. Like a slightly deflated ball, Twilights breasts molded to the pressure of the yak's hands yet still retained their original shape when pressure is released.

“Uh-your so-ahh-keep going.” Twilight breathed encouraging Rutherford and his now steel determination. “You feel so good! KEEP GOING, KEEP GOING!”

Unable to hold back anymore, Twilight clamped around the thick cock of Rutherford and in that moment the Prince couldn't hold back anymore and released all of his pent-up hedonism into the eagerly awaiting womb of Twilight.

Rutherford collapsed next to Twilight, smiles of complete satisfaction pasted onto their tired faces. The two slowly drifted off into a well-earned slumber, the mare was particularly comfortable in the thick fur blanket protecting her from the harsh winter storm outside. Unknowing to the both of them, however, a certain voyeur had been watching them from the shadows.