The Test

“Come on people this is going to have to be the bestest party in all of Equestria. Master’s daughter will be coming soon and Rainbow can only keep our Master and Mistress distracted for so long after all.”

“Yeah, we know Pinkie,” Twilight said as she levitated the chairs and furniture in the Castle of Friendship out of the way, to make room for the orgy that she suspected would happen at the party. Meanwhile, Applejack was bringing preparing trays of food for the upcoming party, along with Pinkie’s sweets.

“You think I should get a few strippers from Sugarcube Corner?” Pinkie asked, tapping her finger against her chin in thought. “Or should we keep it an affair within the harem?”

“You’re getting strippers from the club!?” Scootaloo squealed, dropping the table she and the other crusaders had been carrying. “Will Sweet Melody be there?”

“Some pony has a crush,” Sweetie Belle teased, smiling impishly as her friend, Applebloom shared her friend’s grin. Whilst Fluttershy looked on with a soft smile, she had been waiting for someone to ask her for help, but with the root of laughter, it didn’t seem to be happening.

“It might be a crowded affair with the strippers as well the harem, especially if Chrysalis accepts her invitation then those from the Crystal Empire will be joining us as well,” she pointed out.

“Hmm to whore or not to whore, that is the question;” Pinkie said dramatically, holding up her hand as if in a soliloquy.

Twilight rolled her eyes at her friend’s dramatics. “You sure they’ll be here today Pinkie? Cadence’s messages said that Sapphire and Rose would be taking their final tests today, but what if they don’t pass?”

“They will Twilight,” Pinkie assured her with a smile. “Never doubt the Pinkie sense.”

Sapphire

Sapphire didn’t bother to get dressed as she made her way over to her final test, she had a strong suspicion that they would be coming off soon enough. As she made her way through the halls she ran into the young Flurry and Rose anxiously talking.

“Perhaps I should just flunk the exam on purpose Flurry. That way you’re not left alone for too long,” Rose offered her half-sister. She like Sapphire was also naked. Rose had inherited her mother’s pink texture along her scales, albeit it seemed to grow purple around her hooves. Her wings were like scythes instead of feathers but she had inherited her mother’s beauty and hourglass physique.

“You can’t do that Rose. I know how badly you want this, not just that but think about Master. You can’t leave him waiting,” the young Flurry Heart told her half-sister, pulling her into a hug. “I’ll be fine.”

“I’ll miss you,” Rose replied squeezing her half-sister.

“You won’t have to wait long Rose, from your perspective at least. And I’ll be fine with my older self, this time magic is complicated after all,” Flurry Heart assured Rose pulling away from her. “Don’t worry about me, just focus on passing this test and being the best sex **** for our Master that you can be.”

They pulled away from each other and only then did they notice Sapphire behind them. “Oh Sapphire, I guess it’s time then.”

“Yeah, it’s time. Looking forward to being Dad’s cumdumpster Rose?” Sapphire asked, pretending she didn’t hear the previous conversation.

“Of course I am, assuming we’ll pass,” Rose said, taking one last almost sorrowful look at her fellow alicorn before following Sapphire to her mother.

“Good luck.”

The two made their way into their training room, where they had spent every day since coming of age. It was no normal training arena however this was one which had been set up specifically to train the three women to be Masters.

There were mats, beds and chairs that served as surfaces for which the three would learn to fuck and serve, but this wasn’t all. There was a shelf of dildos and strap-ons shaped like their father’s dick for which they practised serving. There were also a series of sex machines designed to train their stamina, Sapphire shuddered as she remembered the hours she had spent on those machines.

Standing before the window on the far side was Rose’s mother Cadence. She was casual, wearing a thin piece of lingerie. “Haven’t you two grown up to be such sexy wonderful sluts?”

The two smiled at the compliment, but they didn’t say anything, nerves overtaking the two. Something Cadence was able to notice. She gave them a soft reassuring smile, but within her eyes, there was a devilish glee that was very eager to have her way with the two sexual prodigies. “I wouldn’t worry too much you two. Truth is this test is mostly a formality, I already know what wonderful whores you can be.”

Cadence beckoned them over to her, smokey eyes checking out the two draconies as she was often to do. The two were sure to pose in return, as they had been trained to, thrusting their chests forward and giving her a seductive grin. “Rose, Radiant and Umbra will be testing you. We don’t want any nepotism affecting your score after all.”

Rose's eyes glanced at the aforementioned ponies who were standing in the corner of the room, their own test prepared for her. Radiant was smiling warmly though Umbra was scowling and rolling her eyes. Rose nodded and made her way to the two, hips swaying as she walked, leaving Sapphire with the Princess of Lust.

“So Sapphire shall we cut to the chase? Do you know why there are only two ponies who can truly satisfy me?”

Sapphire could sense that her teacher was in heat, though these days she was rarely not in heat. For all of Sapphire's life, she had gone without being truly satisfied, oh sure whenever she got the opportunity to she had fucked anyone who was of age. From her wife to her daughter, to her former arch-enemy Umbra, but none of them could help her.

“Is this a trick question? Because you made it so Mrs Cadence, you had our Master make it so that only Master and Mistress could satisfy you. But that kind of backfired on you, didn’t it? You horny slut.”

To her surprise however Cadence didn’t seem offended by that, instead, she shot a grin. “I don’t regret it. I made myself a demon of lust, but this makes sure that my cunt belongs to our Master and Mistress no matter how much I whore myself out. But that change was made a long time ago when our Master first acquired the root, a lot has changed since then, and it was before you were born.”

She stood up, her massive tits jiggling as she bit on her lip. “What the root changes isn’t set in stone. If a wall was changed to pink it could still be painted blue by hand, if only two could satisfy me before that doesn’t mean a third cannot learn.”

“So that’s the test then? You want me to satisfy you?” Sapphire asked, her eyes sharpening as she considered what would be the best tactic to go about this. "See if I can?"

“Think you’ve inherited your parents’ talent?” Cadence asked, stripping down her lingerie so now that it now that the thin lace only hung loosely from her shoulders.

Heart hammering in her chest Sapphire considered her chances, Cadence had given her no easy task, but Sapphire was no ordinary slut. Her mother’s genes flowed through her and with it her talent. Deft hands gave Cadence's lingerie a light shove, sending it to the ground.“You’re about to find out.”

Cyan fingers clasped the cheeks of the Princess of Lust, she was quite firm. Mrs Cadence had been a dominant growing up but Sapphire had a keen eye. She may enjoy dominant less experienced sluts, but she had spied in her eye a not-so-secret desire to have the tables flipped on her.

“Am I?” Cadence asked pushing her lips against Sapphire’s lips. It seemed that she had no intent to surrender easily. Their kiss was passionate with both of them wrestling for control over the momentum. Cadence’s hands got the first grope, but Sapphire knew her teacher’s weakness and grasped her breasts.

A soft moan escaped Cadence’s lips and Sapphire was eager to take advantage of it. Her kiss shifted from her lips to her neck, ensuring to clamp down hard on her skin. A sweet gasp escaped Cadence's lips, her left hand though refused to be cowed nearly as easily, grasping Sapphire's butt and squeezing them. An effect boosted by the lust magic that radiated from every cell in the princess’s body. Treacherously Sapphire couldn’t resist a moan of her own.

“You didn’t think it would be that easy did you?" Cadence purred, before squeezing her extra hard and eliciting another squeal from the dracony.

"N-not at all Cadence," she gasped, body squirming from the arousal being channelled through it. But Sapphire knew Cadence’s weakness, her hands grabbed Cadence’s tits and mashed them together. “But I know your weakness.”

Sapphire’s lips clamped down on Cadence’s tits eagerly, immediately causing a squeal from the Princess of Lust. Between her lips, Sapphire’s tongue played with her erect nipples. They were as hard as diamonds in her mouth as she toyed with the nubs. Cadence’s hands slowed as she lost herself in the pleasure.

“Oh, that’s-that’s good Sapphire!” Cadence gasped, her hands only barely grasping onto Sapphire’s ass now. Her leg raised against Sapphire’s as she lost herself in the pleasure.

“You might act like a demon of lust Cadence,” Sapphire purred, pulling away from her nipple briefly; her fingers drifting down the Princess’s spine, her own lust magic running down her back like a waterfall. “But I know that deep down you love to be dominated. To have the tables turned on you. Because deep down you’re a slut like all of us.”

When her fingers reached around Cadence’s soft bubbly ass and gave it a squeeze, bringing her to the edge of her first orgasm. But one swift slap to the ass sent her over the edge. “You’d think a slut princess like you could hold it in longer. But I guess you’re so **** that anything could set you off.”

“You-you think one measly orgasm is enough to satisfy me?”

“Of course not,” Sapphire said, lifting Cadence and throwing her to the mat to her side. The two landed on the soft surface gracefully with laughter being shared between them. “An insatiable slut like yourself won’t be beaten quite so easily.”

Sapphire got to her knees and spread Cadence’s legs apart. It was glistening already, her cunt just begging to be eaten out. Sapphire needed no invitation and ate it out.

She was like a machine, with months of training in the art of sex. A dracony’s tongue was longer than a pony’s, allowing her to explore deep into Cadence’s pussy. Sapphire could feel Cadence’s legs twitch as she tried to hold in the squeal. After several minutes she finally cried out: “You’ve been fucking holding out on me!”

Sapphire pulled away for a moment, but her thumbs continued her lips' work. Her tongue rolled over her lips as she tasted Cadence's cum on her lips. It was sweet like a strawberry. "I still am, I save my true talent for those who truly deserve it."

She added two more fingers to her efforts, and soon Cadence was screaming in orgasmic delight. "Don't I-AH- deserve it?"

"Not in the slightest. As far as I'm concerned there are only two who get to experience my true talents. You're just another whore," she said with a smirk, flipping her hair as she leaned forward so her lips were next to the princess's ear. With her cum stained fingers still pressing "And that's exactly what you want to be isn't it?"

She received her answer in the form of another howl of ecstasy. Satisfied Sapphire straightened her back and looked over the Princess. This was proving easier than she thought, but she wasn't satisfied yet. She looked around the room for inspiration and found it with Rose thrusting into Umbra with one of the dildos shaped like their father's dick. Rose spotted Sapphire fucking the ever-living shit out of her mother and gave her a grin and a wink, before returning to the dark slut before her.

With her own magic, Sapphire summoned one of the other strap-ons and elegantly fastened it. Cadence spotted what she was doing and could only nod in excitement. Smiling Sapphire proceeded to push into Cadence’s cunt. “You just watch me Cadence. I’m not going to be just another **** in my Dad’s harem, I’m going to work my way up it. Through sex, skill and subterfuge I’ll make my way to the top.”

Cadence attempted to speak, but she could only nod rapidly as the only sounds that escaped her lips. “Soon I’ll have a sex **** of my own just like you have Amore. I’ll have my own business that I run for my Master, with a fortune of my own to serve him with. I’ll be one of his personal favourites, the sapphire alongside his diamond.”

Lost in the ecstasy of her own plans Sapphire’s tempo was increasing in rhythm. The sofa was beginning to shake and creak under her rhythm. For a good while Sapphire said nothing as she slammed into her teacher, breaking her into several further orgasms and sending her into a howling mess of pleasure.

Eventually though Sapphire could see that her teacher was almost defeated. Her eyes had rolled back into her skull and her tongue flopped helplessly as she surrendered herself to Sapphire’s fucking. “Yes! Yes! Yes!”

Sapphire yanked Cadence’s hair, earning herself another throaty scream from the alicorn. “I’m going to break you soon. I can already feel your resolve slipping. I bet you’ve only got one orgasm left.”

“Oh fuck!” She squealed, pushing herself onto the dildo. Sapphire however wasn’t about to let the initiative fall back into the Princess’s hands and thrust back.

“You’re just another whore Cadence, a slut I have to fuck to get to the top. I’ll enjoy it every time, and when I get there you’ll be another slut below me,” Sapphire growled, causing another orgasm. "You trained me to be the perfect **** in my Dad's harem. And I'll be one of his favourites, won't I Cadence?"

"YES FUCK SAPPHIRE! YES! YOU'RE PERFECT! YOU PASS! NOW FUCK ME!"

Sapphire cocked a subtle smirk. "With pleasure."

A/N: Sorry this chapter took so long to write, it was a long one thought. If anyone has any ideas for how the introduction of Sapphire to Spike and Rarity should go that would be a help and I'd love to hear them. Also, this was the first commission I bought that I got to use, thanks to everyone who donated.

Crowdfunding for Commissions: https://ko-fi.com/darkstar239

Suggestions, feedback and comments are welcome and help motivate me to continue.