“Your Highness!” said Pinkie Pie, waving down Daybreaker beside the DJ booth. “Thank you so much by trusting me with your daughters’ eighteenth birthdays! This was a big get for me!”

“A get?” asked Daybreaker incredulously. “You are the most famous party planner in Equestria, and a personal friend of Twilight Sparkle. Were you concerned that we would go with someone else?”

“I dunno!” chirped Pinkie Pie, making a broad gesture that caused her champagne flute to spill. “Sometimes I worry! I can’t be happy-go-lucky all the time, Princess!” She squinted at Daybreaker, examining the princess’ flowing, flaming mane. “So… what’s your deal, Daybreaker? You’re, like, some kind of burning muscle mare?”

Daybreaker scoffed, holding back a smirk. “Pinkie Pie, you have asked me that question nearly every time the two of us have spoken.” She squared her shoulders and answered solemnly: ”My answer is unchanged: yes, I am ‘some kind of burning muscle mare.’”

“Cool!” said Pinkie. “So… all those kids are heading off on their own adventures tomorrow, huh?”

Daybreaker was silent for a moment before answering. “Yes,” she said. “Not all of them are leaving tomorrow, for various scheduling reasons, but they will all be moving on… quite soon.”

“I wish one of them would have come to me for an apprenticeship,” said Pinkie. “Equestria could use a princess who knew her way around baking, party planning… fourth wall stuff…” Pinkie turned her head a few degrees and winked at a bare section of the wall. “If one of them ever gets bored with her ‘adventure,’ maybe send her my way!”

Daybreaker hadn’t been listening very closely to what Pinkie Pie was saying, but she responded by noncommittally mumbling, “Yes, of course… wonderful idea…”

Pinkie sensed that Daybreaker was checking out of the conversation. She was just about to excuse herself, but Daybreaker beat her to it; the burning princess demanifested, leaving Celestia in her place.

“Ah, hello, Pinkie,” said Celestia. “Just a moment…”

Celestia tugged at her dress, tugging and tightening the waist and neckline. Her dress - as well as Luna’s - was a miracle of practical design, perhaps Rarity’s greatest technical accomplishment. It fit Daybreaker snugly, hugging her broad chest and muscular thighs - and when she turned back into Celestia, it hung loosely without appearing to be ill-fitting. Truth be told, it wasn’t as good as wearing a dress that was properly tailored for one body or the other, but it was a decent compromise for social events where both the princess and her alter ego wanted to be present.

“There we are,” sighed Celestia, after she’d gotten the dress to fit comfortably. “I do wish Daybreaker would retreat to a more private space before ceding control to me. It is embarrassing, and just a bit immodest, to adjust my dress in the middle of a party…”

“Don’t worry, Princess!” said Pinkie Pie. “I didn’t see anything I wasn’t supposed to! No royal nip slips or anything like that. So why’d Daybreaker just split like that? Did she have to run off to the little girls’ room?”

“Er… no,” said Celestia. “I am not sure how you think our dual identity works, but the scenario you’re describing is not necessary or possible.”

“Well, I hope I didn’t say anything that cheesed her off,” said Pinkie.

“No, not exactly,” said Celestia. “She is just wistful over the impending departure of our daughters, and she is somewhat tight-lipped when it comes to emotional topics. I am just as wistful, I confess. Just a bit less inclined to scamper off when the conversation turns… challengingly personal.”

“Ooh, savage!” laughed Pinkie. “I wish I had an evil counterpart to gossip about. She’d be named Bad Pinkie and she would be a messy bitch!”

Celestia cracked a smile, but Pinkie could see that she wasn’t in the mood to riff on the “Bad Pinkie” concept - so Pinkie steered the conversation elsewhere. “Hey, it’s only natural to feel this way. Your kids have been a huge part of your life for the last eighteen years! I thought this might happen, which is why I chose this hall for the celebration. The interior space-“ she gestured widely with both arms- “is for jubilant celebration, and that quiet little garden-“ she pointed at the tall glass doors that led outside- “is perfect for quiet contemplation.”

“In faaaact,” she continued, “I’m Pinkie Sensing that if you go out to the garden right now, you’ll run into two other mares who share the same feelings and might be willing to talk about it!”

Celestia tilted her head. “Is that another thing your Pinkie Sense does?”

“Nah,” said Pinkie. ”I just sawLuna and Twilight walk out there a second ago.” She giggled. “Sight isn’t the Pinkie Sense, but it is a Pinkie sense!”

Celestia thanked Pinkie Pie and made her way to the door, stepping out into the cool and quiet of the royal garden. Celestia couldn’t see Luna and Twilight from the doorway, but she wasn’t in any rush; the calm darkness was a welcome respite from the crowded and noisy party. She strolled between the tall hedges, admiring the flowers in the dim light, until she turned a corner and spotted her wife and her sister. Twilight and Nightmare Moon were seated on a bench by the reflecting pool, Twilight tucked under Nightmare Moon’s wing.

There was a time when Twilight Sparkle could have fit easily under Nightmare Moon’s wing; the Mare in the Moon’s Amazonian stature came with a huge wingspan, big enough to completely conceal an average mare. But Twilight had done a lot of growing in the last eighteen years; she stood taller than Celestia now, a fact that had surprised and amused both of the royal sisters. No one quite knew what influenced the growth of alicorns - there simply weren’t enough alicorns around to do a proper study - but Twilight’s wives were very happy with how she was turning out.

Celestia approached and sat herself down on the other side of Twilight, scooting in until she was just as close as her sister. “Taking a break?” she asked.

“Yeah,” said Twilight, turning her head just enough to make eye contact with Celestia. “The girls don’t need us around every second. This party’s for them and their friends, and they should…” she sniffed, then continued: “they should have fun.”

Celestia put her arm around Twilight’s shoulder, pulling her a little closer - but not so close that she stole her away entirely from Nightmare Moon. “Twilight Sparkle,” she said, “can I confess something? I’m feeling rather misty about what the next few days will bring. That many goodbyes all at once… I truly don't know how I will hold it together.”

“Well,” said Twilight, sniffling once again, “you won’t be the only one crying, so don’t worry about that.”

“The two of us came out here so as not to embarrass the girls,” said Nightmare Moon. “If their friends saw me blubbering openly, I fear it would be widely regarded as a ‘bummer.’”

“And it would do your reputation no favors,” said Celestia.

“Quite,” Nightmare Moon agreed. “I don’t feel the need to be feared quite so much lately, but I would prefer not to be pitied.”

“Yes, I-” Celestia paused. “Pardon me, but Daybreaker is trying to cut in. I’d prefer to remain a part of the conversation, however… one moment.”

With a bit of focus, Celestia transformed herself into her hybrid form - a rarely-used compromise between the physical bodies of herself and her alter ego. “I should do the same,” said Nightmare Moon. “Luna is letting me know that she wants to be present, and I am certain she will give me a hard time if I don’t permit it…”

While Nightmare Moon transformed into her hybrid body, her sister once again tugged at her dress. “Oddly enough,” she grunted, “This dress is much more comfortable when I am either Daybreaker or Celestia. Being in between just makes it feel wrong all over.”

“Yes,” said Hybrid Moon, trying in vain to straighten her dress’ neckline, “We are finding this to be the case as well. I suppose we can put up with a small inconvenience, if it means all of us can be here.”

“Yes, we should all be here,” said Twilight. “It sounds like we’re all in the same boat, huh?” sighed Twilight. “I always tried to make sure we were prepared for everything when it came to parenting. And we usually were! I mean, we weren’t perfect, but… nursing, language development, reading, school, puberty… we were as ready as anyone could be! But this… the girls going away… I feel completely blindsided.”

“I remember feeling like this when I sent you away,” said Hybrid Sun. “A feeling that I was losing something I couldn’t get back. I knew that you needed to begin the next part of your life... But it didn’t feel right for things to change just yet.”

“We have lived so long, and seen so much,” said Hybrid Moon, “ you would think we would be less prone to sentiment when we see things change. But how dull that would be! To never feel the weight of loss or mourn the passing of time. We would not be fit to lead or to love, if we no longer felt as ponies do.”

“I’d like to feel just a bit less of this weight,” said Twilight. “Or if I could deal with it better. Be a little less overwhelmed.” She shifted her weight, leaning a little more of it onto Hybrid Sun. “I guess I know how you felt, when you let me go,” she said. “But I saw you sometimes, and I always sent letters… and eventually I came back!” She sighed, slumping more of her weight against Hybrid Sun. “But that’s not quite how it works out with kids, is it…”

“No,” said Hybrid Sun. “I would be overjoyed if each and every one of them returned here and joined the ‘family business,’ as it were, but it is out of our hands! We must accept that their lives are their own, and simply hope…” she paused, her expression shifting. “Oh, I simply don’t have it in me to be the wise, detached mentor right now! I wish our daughters were not leaving! I am not ready for it, and there is no wisdom that will change the way I feel! Nor would it change your feelings, I suspect!”

“You are right,” said Hybrid Moon. “The girls will leave, and we will cry openly, and the castle will feel very empty for a time. I do not know if there is any way to prepare for that, other than simply knowing and accepting that it will happen.”

“I hate that answer,” said Twilight. “But you’re right.”

Having come to that agreement, the princesses were quiet for a while, watching starlight ripple on the surface of the reflecting pool. Finally, Twilight spoke again: “But they’ll be okay, right? I mean, that’s what really matters. They’ll be fine out there, right?”

“They know how to defend themselves, if that’s what you mean,” said Hybrid Sun. “None of them are headed anywhere especially dangerous, but we’ve trained them in an array of defensive magic if they run into danger.”

“And they have had many years to practice those spells,” said Hybrid Moon. “Perhaps too many, since Nightmare Moon and Daybreaker went behind everyone’s backs to teach them those spells at an irresponsibly young age.”

“Oh, there was no harm in that,” said Hybrid Sun, drawing on her Daybreaker side. It was cute to see them running around shooting those magic bolts out of their horns. It barely hurt at all to get hit by one, really.” She paused in contemplation. “They did knock over quite a lot of vases, though.”

“The magic bolt wasn’t that bad,” said Twilight. “The real mistake was teaching them the shield spell too early. Golden Shield was convinced she’d be the best at it, and she kept daring the other girls to throw rocks as hard as they could at a bubble that could maybe stop a paper airplane.”

Hybrid Moon laughed. “We are lucky that none of them had much of a throwing arm at that age.”

“We were luckier than my parents were,” muttered Twilight, through a thin, mischievous smile. “My brother was a genuine prodigy when it came to shields, and he had me hurl rocks at him too. I didn’t have much of an arm either, but after he egged me on enough, one lucky throw cracked his shield and left a huge bruise on his shoulder. So…” she nudged both sisters with her elbows. “If you’d come to me, I could have told you exactly how bad an idea it was to teach the girls those spells.”

“Anyway,” said Twilight, “I’m not that worried about physical danger. I was lucky to find the friends I did, and meeting people like Starlight showed me that not everyone is so lucky. I just want them to make friends, wherever they go.”

“And they won’t have you around to help anymore!” said Hybrid Moon. “What a pity. I remember when Radiant Sunrise was having difficulty making friends in the fourth grade, and you intervened to assist her… you won’t be able to do that now that they’re on their own.”

“Oh yes,” laughed Hyrbid Sun, “Sunrise was just delighted to have the Princess of Friendship arrive in her humble classroom to teach a surprise lesson. I hear you were very subtle back then.”

“Oh, don’t remind me of that,” groaned Twilight.

“Why not?” laughed Hybrid Moon. “It’s still an option! If one of our daughters is having a friendship problem, just teleport to wherever she is and insert yourself into her life!”

“Right,” sighed Twilight. “Don’t worry, I learned my lesson. And I suppose we’re sending them out into a better world than the one I went out into,” said Twilight. “We have better foreign relations and fewer villains, so that’s something.”

“Yes, far fewer villains,” said Hybrid Moon.“Although… the third royal sister is still out there somewhere…”

Twilight sat up. “Hm?”

“Oh, yes!” said Hybrid Sun, not missing a beat. “The secret third sister, who was so evil - a thousand times more evil than you, Nightmare Moon - that we expunged her name from the history books before we sealed her away. Yes, yes, someone’s going to have to deal with her at some point. I hope that burden doesn’t fall on our poor progeny…”

Twilight groaned. “I actually believed you two for a second there. You know, it’s not fair for both of my wives to gang up on me like that.” She relaxed onto the bench again, snuggling up to both royal sisters. “Well, I’m not worried. If the girls run into a secret third sister, I’ll marry her too and knock her up with nine foals of her own. It’ll be great.”

“Oh, without a doubt,” said Hybrid Sun. “We made the best of motherhood, against impossible odds, on our first try. The next time, we shall glide effortlessly through it no matter how many foals there are.”

“Oh, she hasn’t worn this in ages,” said Twilight, pulling a polka-dotted dress from Summerfree’s closet. “There’s no way it still fits, but she’d kill me if I threw it out without her permission.” She pulled it off the hanger, folded it up, and set it in the cardboard box on Summerfree’s bed. “She probably wouldn’t even let me look through her closet if she was still here...”

Twilight sighed. She’d been putting off the task of tidying up the girls’ bedrooms; it was just another reminder that they were all moved out, and she could only contemplate that for so long before she began to get choked up. After she was done with Summerfree’s room, she’d probably need to distract herself with something...

She turned back to the closet and sorted through the hanging clothes. “When did we buy her all these shirts?” she muttered. “How does she have more clothes than her sisters? Not like we ever played favorites when it came to clothes.” She took another hanger from the closet and stared at it. “No, this was Amaranth’s… I guess Summerfree’s been borrowing clothes. Well, that’s between her and…”

Twilight noticed something out of place - the dangling corner of some colorful, glossy paper, tucked under a shoebox on the closet’s upper shelf. She lifted the shoebox and pulled the paper out from under it, taking a look at what was printed on it.

“Oh,” said Twilight, her face falling. “Well, she’s basically a grown mare now… I mean, it’s healthy… normal… and it’s not my place to tell her who she should be… interested in…”

Sighing, she lifted the shoebox and tucked the paper underneath it, making sure that no corner was poking out this time. She went back to sorting Summerfree’s clothes, but she couldn’t quite get that image out of her head.

When had Trixie ever posed for a pinup? Had she gone off and become a sex symbol while Twilight had been focused on parenting? And how had Summerfree gotten her hands on a poster of Trixie Lulamoon, provocatively posed, wearing nothing but her signature hat and cape?

Twilight paged through her notebook, tracing her finger over the neatly drawn sigils. Over the past two decades, working on the conception spell had been a hobby of hers; whenever she got the chance, she would read up on fertility spells and reproductive health magic, looking for any way to refine and improve the spell. And throughout all those years, she’d done a lot; this time things would be a lot more fun.

“It’s somewhat rare for you to insist on a particular set of partners, Twilight,” said Daybreaker as she let the bathrobe fall from her shoulders. “What made you decide you wanted me and Nightmare Moon this evening, my darling?” She approached Twilight, gently pulling at her bathrobe. “I would like to think that my efforts at seduction are paying off. I’m sure you’ve noticed me slutting it up lately. I spent a while moping about after the girls moved away, but there are advantages to having the castle to ourselves.” She arched her back, thrusting her tits in Twilight’s face and shooting her a saucy grin. “I may be a little rusty, but my body is still perfect! Just one advantage of being ageless.”

“Yes,” said Nightmare Moon, emerging from the steamy bathroom. “As good as our sex life has been, I now realize how much I’d been holding myself back for the kids’ sake. It’s fun to shake my tits for you in front of the staff… or grind my bottom into your lap while you’re sitting on the throne... “ she laughed triumphantly. “Oh, the girls would be mortified if they saw their mothers acting like that.”

Twilight cracked a smile. “Girls… I think it’s the perfect time for something I’ve been putting off. I’ve been putting it off for the last two decades, actually, and I just can’t wait to let you in on it.”

There was something sinister in Twilight Sparkle’s voice - a rare occurrence, unusual enough that it made both of the royal sisters slightly nervous. “Just what are you proposing, Twilight?” asked Nightmare Moon.

“I have something for the two of you that is long overdue,” said Twilight, her smile growing wider and sharper. “I certainly couldn’t do it right away, not when the two of you were pregnant… and then when the girls were infants, we were all so busy, and then there was school, and… well, at any rate, the time has come, ladies.” She let her own robe drop to the floor. She wasn’t the same mare she had been twenty years ago; throughout two decades of life as an alicorn, she’d gradually grown in height and muscle mass. Not quite as big as Luna and Celestia’s alter egos - but still an imposing presence when she wanted to be. “It’s time for your long-overdue punishment.”

“O-oh?” asked Daybreaker. Twilight’s confidence and cruel smile were making her knees tremble; Daybreaker adored power, and she was a conqueror by nature, but Twilight's promise of punishment brought out the submissive in her.

“Yes,” said Twilight. “Did you really think your little pregnancy stunt would go unpunished forever?” she shook her head and clucked her tongue. “That was a serious breach of my trust. Believe me, I know the value of forgiveness, but after a betrayal like that… well, there can’t truly be peace between us until the score is settled. So take your place on the bed, and do not resist me… and I will punish my wives until I decide they have had enough.”

Nightmare Moon was already on the bed, and she stayed there - but Daybreaker hesitated for a fraction of a second. Twilight stomped her foot, hard enough to shake the chandelier hanging from the bedchamber’s ceiling. “NOW!” she bellowed, at a volume that put the Royal Canterlot Voice to shame. Before she could even think, Daybreaker was scrambling onto the bed, obeying her wife’s command - and she felt a heat awakening in her core. She couldn’t remember the last time she’d gotten turned on so quickly…

“There we are,” said Twilight Sparkle, sauntering over to the bed. “Don’t resist, my darlings. I need you to show me that you love me… and serve me… and the way you’ll do that is by being grateful for your punishment.”

Twilight threw herself onto the bed, bouncing and settling between her wives. She reached her arms out in opposite directions, resting her fingers in each mare’s collarbone and tracing a path down to their breasts. “You two made a terrible mistake, going behind my back like that. Didn’t you realize that I would grow in power?” She pinched their nipples - at first she was gentle, but then she twisted them mercilessly, making both mares cry out in pain. “You knew what a good student I was… how quickly I grew stronger. You knew I would become the most powerful princess in Equestria.”

Twilight sprang up on the bed and crawled atop Daybreaker, hovering her face just inches above the other mare’s. “And you didn’t just know it… you wanted it. This was what you wanted the whole time, wasn’t it? To create an alicorn who would be greater than you. Someone who could overpower you… dominate you. Well, now you have me.” She paused, licking her lips. “Well, it’s more like I have you.”

She kissed Daybreaker, forcing her tongue past the mare’s lips and reaching down to grope her asscheeks. Daybreaker was completely unresisting now; every motion of Twilight’s tongue, every rough squeeze of her fingers, made Daybreaker’s marehood pour with arousal.

Nightmare Moon wasn’t happy with just watching, though; growing impatient, she sat up on the bed and reached out her hand to caress Twilight’s mane. To her shock, Twilight tensed and threw herself off of Daybreaker, pouncing on Nightmare Moon in an instant.

“I told you to lie on the bed,” growled Twilight, snarling cruelly at Nightmare Moon. “See, this is the problem with you naughty girls. Just like twenty years ago, you always give into your selfish impulses. You do what you feel like doing, instead of what I tell you to do.” She leaned in for a kiss - just as forceful as the one she’d given Daybreaker, but much briefer. “How am I supposed to rule Equestria if I can’t keep my wives under control? I need everyone to see that I am the mightiest princess… the greatest among us… and it all starts right here, in this bedroom.” She reached down with one arm, following the curve of Nightmare Moon’s pelvic bone until her fingers were achingly close to her pussy. “You will do what I command you to, from this point forward. Because that’s what a good wife does… and you want to be good, don’t you, Nightmare Moon?”

Nightmare Moon groaned. Her pussy was begging for Twilight’s fingers to come just a little bit closer, to touch and explore her slick marehood. She would do whatever it took for Twilight Sparkle to give her release… “Yes, Twilight… I want to be good… I’ll do what you want…”

“There!” said Twilight happily. “That’s what I’m good at. I take villains like you, ponies who nobody thought could be redeemed…” Twilight’s horn glowed, and a line of magical energy extended from Twilight’s hand and strung itself around Nightmare Moon’s neck, forming itself into a collar.

“...and I tame them.” Rolling off of Nightmare Moon, Twilight extended her arm in Daybreaker’s direction and gave her a similar collar. “All those sinister desires and naughty instincts… I break bad girls like you. Hands and knees, girls!” She yanked on the collars, jerking Nightmare Moon and Daybreaker upwards. Obediently, the two of them got on their hands and knees, trembling in anticipation.

“Good!” said Twilight, demanifesting the collars and resting her hands on their bare backs. “The first step on the road to redemption. Once I turn the two of you into good girls, you’ll be a shining example to the rest of Equestria.” She scooted backwards on the bed, gliding her hands along her wives’ muscle-bound backsides until her hands found their glutes.

“Lots of ponies are still scared of you,” said Twilight, “but when they see you tame and broken before me, they’ll know it’s me they should be afraid of. All your strength, all your ambition - it belongs to me, girls. It serves the might of Princess Twilight Sparkle, the ruler of Equestria! So tell me, girls - who is your princess?”

Before they could answer, Twilight raised her hands and brought them back down in a loud, resounding smack. “You-you are!” the sisters answered.

“That’s absolutely right,” said Twilight. “I’ll make loving, devoted wives of you two yet… and then all of Equestria will love me the way you do. You can lead the adoring crowd in cries of ‘Praise Twilight!’ Won’t that be nice?”

She smacked her wives’ bottoms again, and they cried out “Praise Twilight!” in near-perfect unison. “Yes, exactly!” cackled Twilight. “Doesn’t it feel good to praise your princess? Doesn’t it just fill you with powerful, aching pleasure when words of praise pass your lips?” She smacked their asses again, and once again they praised her name. “Yes, that feels better than being bad, doesn’t it, ladies? Giving in to selfish desires - defying me - might give you a momentary thrill… but serving me and praising my name will fill your life with pleasure beyond imagining.”

Twilight manifested magical force around her fingers, turning both hands into wide, aerodynamic paddles. She smacked her wives’ asses repeatedly, mercilessly, barely giving them time to say “Praise Twilight!” before she swatted them again.

“You seem to be getting the idea,” said Twilight. “I’m still watching you two for the slightest hint of defiance, but this is a promising first step. I think my good girls have earned a treat.”

Twilight formed a circle with the fingers of both hands and placed it on her crotch. Her horn glowed, and the interior of that circle shone with the same purple light - and a thick purple stallionhood began to manifest on her body. She caressed the growing shaft, letting her hands follow its growth all the way to the tip.

“Well, it’s not so much a treat as it is another implement with which to administer punishment,” said Twilight, “but if you show proper reverence, and submit to Twilight Sparkle’s gorgeous, immense cock… you might just end up enjoying this.

“Now then… Daybreaker, you’ll attend to me first. Nightmare Moon, I expect better behavior this time. Do not insert yourself into the proceedings… and do not touch yourself. My wives may only feel the pleasure that I give to them, and they cum when I permit it.

“Daybreaker,” said Twilight, “you’ll use your mouth to get my cock nice and slick, all right? Feel free to enjoy yourself.” She hopped down and stood at the foot of the bed, thrusting her hips to make her flaccid cock bounce enticingly.

Daybreaker wasted mo time carrying out Twilight’s order. She grabbed her wife’s shaft with both hands and lay her tongue against the underside, licking her way upward and drooling all over Twilight’s towering stallionhood.

“Ahh… not bad…” moaned Twilight, running her fingers through Daybreaker’s burning mane. “But this doesn’t earn you any brownie points, Daybreaker. You may be following my commands, but you are also slaking your shameful lust. You’re licking my cock greedily. You’re doing it for your own sake, when you should be doing it for your princess. Everything you do, Daybreaker, should be a selfless act of love for the mare who owns you, body and soul.” She shuddered with pleasure as Daybreaker’s tongue reached her tip and began to wet the wide, flared head. “But… that’s an advanced lesson. For now, getting my cock wet is all I ask. And… yeah, I think this is plenty. Turn around, Daybreaker, and present your cunt for me.”

Daybreaker obliged, positioning herself on her hands and knees at the edge of the bed. Twilight reached out slowly with both hands, letting Daybreaker soak in the anticipation before she grasped her rump and squeezed both of her cutie marks.

Being manhandled like that was plenty of stimulation - but Twilight intended to give her much more than that. She drew her hips in close to Daybreaker’s rump and touched the underside of her shaft against her wife’s glistening marehood. “Ooh,” she moaned, gliding her cock slowly up and down, “you’re so wet, Daybreaker. Are you going to be naughty again?” She brought both hands down on Daybreaker’s cutie marks, smacking them with open palms. “I know how disobedient you can get when you’re horny. Are you thinking about being bad?”

“No,” gasped Daybreaker. “Mistress Twilight, I only want to serve you…”

“That’s good,” said Twilight. “I can’t have you misbehaving every time you get horny, darling.” She brought the head of her cock to Daybreaker’s marehood, teasing her wife’s little pink clit. “Because I want you to be horny for me all the time, Daybreaker. I want to make you so horny that it breaks you… just the thought of me will bring you to your knees in reverence.” She thrust her hips, inserting herself two inches into Daybreaker’s pussy. “Would you like that?”

“Y-yes, mistress Twilight!” moaned Daybreaker. “Make me your slave! I want to be… mmph… good…”

“Of course you do,” said Twilight smugly. She withdrew her cock from Daybreaker’s pussy, and the fiery mare whimpered as she felt the shaft pull out. “Deep down, everyone wants to be good. Some mares just need a mistress to show them how.”

Twilight spent a short while teasing Daybreaker’s marehood, rubbing her cockhead against the mare’s clit and inserting just a couple of tantalizing inches before pulling back out. Daybreaker was red-faced, panting - she wanted to beg Twilight to fuck her, but she didn’t want to do anything that could be seen as disobedience. She bit her lip, trusting that her mistress would fuck her soon…

“All right, I’m ready,” said Twilight. “Daybreaker… I’m done with you. Tag in Celestia.”

Daybreaker almost wept. “Twilight… n-no, please just fuck me! I need it…”

“You dare defy your mistress?” bellowed Twilight. She raised her hips and brought them back down, smacking her cock on Daybreaker’s asscheeks. “I should have known you were beyond redemption, Daybreaker. Just a slave to your baser impulses…”

“N-no!” pleaded Daybreaker. “I just need you so badly… you’re my whole world, mistress…” She grunted, fighting against her own arousal - and shrank back into the form of Celestia.

“Good!” said Twilight. “This is the lesson, Daybreaker. Serve me, instead of your passions. Now then… Nightmare Moon. You’re just here to watch, got it? You will not ask anything of your mistress. I want you watching. Don’t even blink.”

“Yes, mistress,” said Nightmare Moon. She was holding up better than Daybreaker; getting sidelined was torturous, but it wasn’t as bad as getting teased. She desperately wanted to touch herself, but she balled her fists and fought the impulse; any independent action was certain to be treated as defiance.

“And you, Celestia…” said Twilight, laying a hand gently on Celestia’s rump, “I can’t tell you how much I’ve enjoyed growing into my role as a princess. You really didn’t realize, did you? You didn’t know that your little student would grow taller than you… and stronger…” She flexed her arm, admiring the taut muscle beneath her smooth lavender skin. “It’s so funny… I used to look up to you, Celestia. Figuratively and literally. But now… from where I’m standing, you’re a little shrimp.” She wrapped her fingers around the base of Celestia’s tail, gently stoking the place where it grew from her rump. “That means something, wouldn’t you agree?”

“Yes, Twilight,” whispered Celestia. Her body was tensed in anticipation, her pussy dripping with arousal. She’d been in the “back seat” while Daybreaker was in control, but now she was fully present and in command of her body She wasn’t just experiencing arousal on an intellectual level; she was feeling the heat and tension in her pussy.

It was no secret that Celestia was turned on by Twilight’s growth. She’d gleefully noted the first couple inches of growth during the initial year of Twilight’s princesshood, and year after year she’d kept her fingers crossed that Twilight would keep on growing. The night she’d realized that Twilight was a quarter-inch taller than her, she’d dragged her into the bedroom and begged to be fucked - harder, harder - to be utterly dominated by her gorgeous Amazonian wife. Celestia had never realized she wanted to be dommed by a bigger, taller, stronger mare - because there was nobody to give it to her until Twilight came along.

And once Twilight knew what Celestia wanted, she was only too happy to give it to her.

“What could it mean?” mused Twilight, sliding her fingers up and down the length of Celestia’s slit. “The way I outgrew you… I think my size and strength is a manifestation of my royal authority. I think it’s only right for the biggest princess to rule over the other princesses… don’t you agree, Celestia?”

Celestia was about to answer in the affirmative when Twilight tugged hard on her tail, simultaneously plunging three fingers into her slick pussy. The shock left her speechless, quivering on her hands and knees while Twilight probed her cunt.

“It doesn’t matter what you think, Celestia,” said Twilight. “If you said no, what would your refusal even amount to? I would use my magical and physical superiority to squash whatever little rebellion you attempted.” She gave Celestia’s tail another tug and pushed her fingers deeper. “You’d just be setting yourself up for a lengthy punishment, and the result would be the same: either way this ends with you bowing before me, praising me, giving yourself to me…” She pulled her hand out from Celestia’s marehood and wiped it on her cutie mark. “So do you want to do this the easy way, Celestia? Will you give yourself to me?”

“Yes, Twilight,” moaned Celestia. “I’m yours…”

“That’s absolutely right,” said Twilight. She placed her cock at the lips of her wife’s cunt and plunged herself into Celestia’s marehood, yanking hard on her tail. “You’re mine! Your nice round ass - your big creamy tits - your tight pussy - all mine.” She pulled back and thrust again, wasting no time, hitting Celestia’s back walls with full force. Twilight had spent many a night holding herself back, gently ramping up to full strength, only to have Celestia plead for her to go faster and harder. By now, she knew how her wife wanted to be fucked: she wanted Twilight’s cock, hard and deep, over and over until climax.

“Twilight…” groaned Celestia, “f-fuck… you’re so big… take me, Twilight… breed me, I want to feel your seed inside me… I want to bear your foals, Twilight…”

“Oh yeah?” grunted Twilight, already starting to break a sweat from the effort of pounding Celestia’s cunt. She let go of the base of Celestia’s tail and sought out a firmer set of handholds: one hand on the base of a wing, the other one wrapped around the back of her mane. “Well, you gave yourself to me so graciously, Celestia… accepted my power… and my cock…. I think I could give you the honor of bearing my foals once more.” She grunted, digging her fingers into Celestia’s cutie marks. “Don’t worry, it shouldn’t take long for me to cum… not when I’m fucking a tight little pussy like yours, baby…”

Celestia moaned louder and louder with each thrust, delirious from pleasure, her pussy relentlessly stretched by the girth of Twilight’s cock. Twilight knew how to give her exactly as much as her body could take; it took a lot to overpower the powerful, ageless Princess of the Sun, but Twilight made it look easy. Gentle lovemaking had its place, but Celestia had a growing appetite for power - more and more, she wanted to be rammed, pounded, fucked-

A shudder went through Celestia’s body. Thanks to Twilight’s rough treatment, she was only a couple pumps away from climax; she surrendered herself to the thrusting, letting her conscious mind slip away as her orgasm rose up to engulf it. Her cunt clenched around Twilight’s shaft, and she fell flat on the bed, quaking with senseless pleasure.

“Yes!” grunted Twilight. “That’s what mistress Twilight gives you - boundless love, infinite pleasure…” her hips quakes and her balls tightened against her body. “...And hot loads of potent royal cum…”

Twilight hilted herself in Celestia’s cunt, smacking her balls against her asscheeks, and moaned blissfully as her cock lurched and pumped a thick load of seed deep into Celestia’s pussy. Celestia’s marehood clenched around Twilight’s throbbing shaft, eagerly taking in each fresh splatter of Twilight’s cum. Celestia moaned with pleasure each time another warm rush of seed entered her - and when the last of Twilight’s cum oozed out of her tip, Celestia fell limp on the bed.

“There you go, Celestia,” said Twilight gently, sliding her cock out of her wife’s pussy. “Let’s see if your body can handle the seed of a true princess.” She reached down and caressed Celestia’s belly, running her fingers over the smooth skin. “Bear me strong foals, Celestia, and prove your devotion to your princess…”

Celestia responded with nothing more than a happy murmur. “Aww, did I fuck you absolutely senseless?” she teased. “Well, you need your rest if you’re going to nurture my foals. As for you, Nightmare Moon -“ she turned to the other mare, still watching obediently “-you need to get my cock hard for me again. Use those big black tits of yours.”

After what felt like an eternity of waiting, Nightmare Moon was eager to be part of the action. She crawled to the edge of the bed and knelt in front of Twilight, separating her tits to surround her lavender shaft. Twilight’s cock was still half-hard, mostly standing up by itself, and Nightmare Moon’s embrace immediately got a reaction. As Nightmare Moon bounced on the bed, she felt the shaft thickening and growing stiffer - until the head was standing tall enough that she could bend her head and lick the tip.

And once she started, she couldn’t stop - she mouthed the flared head, licking and moaning, squeezing her tits around the rigid shaft. “Oh!” exclaimed Twilight, “You were doing such a good job of holding yourself back, but it looks like you just can’t stop yourself from worshipping your mistress’ cock…” She put her hand on Nightmare Moon’s forehead, and pushed her away firmly. “But since you’ve been doing so well up until now, I won’t hold it against you. Present yourself, Nightmare Moon.”

Nightmare Moon turned herself around, lifting her tail to expose her dripping pink pussy. “Mistress Twilight,” she panted, “please… breed me, mistress, I’ve been good…”

Twilight chuckled. “You’ve been good enough,” she said, resting her hands on Nightmare Moon’s rump. “We’ve got a lot to work on, but for now… your punishment calls for a deep fucking, and your penance shall be bearing a big, strong brood for me. Are you ready?”

“Yes, mistress,” gasped Nightmare Moon. “I’m ready… punish me, breed me, I’m… giving myself to you…”

“Well, that’s good to hear,” said Twilight. She ran a finger over the pink lips of Nightmare Moon’s pussy, making her whole body quiver. “But let me just work your cunt just a little bit, just to be certain…”

Twilight circled her fingers inside her wife’s marehood, smiling at the long, lusty moans that resulted. She pressed the tip of her cock against Nightmare Moon pussy lips and gently pumped her hips, teasing the opening just like she’d done to Celestia.

“Please… mistress…” groaned Nightmare Moon, her hips bucking wildly as Twilight teased her cunt, “fuck me… fuck me… I need… nnggh!” Nightmare Moon’s whole body jerked, and she cried out as her pussy clenched. There was panic in her mind, as she realized that she was climaxing - but also relief as she experienced the long-delayed culmination. She fell limp on the bedsheets, squirming, panting, as Twilight looked on with amusement.

Celestia, awakening from her reverie, lifted her head to look at Twilight, and they shared a laugh as their eyes met. Nightmare Moon was distantly aware of this - and while she normally did not like being laughed at, the afterglow of her climax made it impossible for her to be angry. Weakly lifting herself on her shoulders, she turned to look over her shoulder at Twilight - and joined in the laughter, a blush showing on her inky-black face.

Twilight straightened her posture, taking a moment to get back into character, and addressed Nightmare Moon. “Well! Some ponies really can’t help themselves, can they? I don’t recall giving you permission to cum, Nightmare Moon. I’ll have to devise an even worse punishment for next time… but for now, Nightmare Moon, you are dismissed.”

Nightmare Moon knew what that meant. She shrank herself back into Luna - whose face still wore the red blush that her alter ego had developed. She turned her body over, lying face up on the bed; she was seductively posed, but compared to Nightmare Moon she also looked very vulnerable - almost fragile - even though she was every bit as powerful as her sister.

Twilight, of course, knew that her vulnerability was a part of how she wanted to be perceived. She didn’t share Celestia’s desire to be fucked senseless; her pleasure called for a different approach.

“It’s wonderful to see you,” said Twilight, climbing onto the bed atop Luna. “Mistress Twilight’s got you, baby…”

Twilight took a moment to simply loom over Luna’s body, overshadowing the smaller mare and dangling her big purple tits in her face. She flexed her wings, accentuating her physical superiority - but her purpose was to comfort rather than intimidate. Luna reached up to reverently stroke Twilight’s firm, muscular chest, and Twilight permitted her wife to admire her for a moment.

Twilight lowered herself onto Luna, shrouding the both of them with her wings, and brought their lips together. She dug her arms underneath Luna’s back and intertwined their legs, wrapping Luna up in herself as they kissed. The kiss was slow; Twilight locked lips with Luna and explored her mouth with her tongue with forceful, deliberate motions. Twilight held her closer, pulled her tighter, and grinded her cock against her dripping slit.

“Luna,” whispered Twilight, pulling back from the kiss and bringing her lips to her wife’s ear. “Thank you for bearing my foals, my love… you gave me such strong, beautiful children, and I’m so proud of each and every one of them. And now that our nest is empty, Luna…” Twilight paused and gently nibbled at Luna’s ear, holding the mare tight as she wriggled beneath her.

“Will you let me breed you again?” asked Twilight. “Will you bear me another litter of beautiful foals? No one but you is fit to bear the next generation of princesses…” She kissed Luna’s cheek. “Well, no one othe than your sister, but she’s already taken care of. So what do you say?”

While Luna contemplated her answer, Twilight kissed her collarbone and kept on descending. A quick kiss on her breast, a nibble at her nipple, a gentle nuzzle at her navel… and when Twilight had nearly reached her marehood, she finally got the answer she wanted. “Yes,” moaned Luna, “Twilight, make me the mother of your foals… again... “

Twilight lifted herself up and looked Luna in the face again. With a confident smile she once again went in for the kiss - and when their lips made contact, she maneuvered her hips into place and brought the tip of her cock to Luna’s marehood. She slid herself in gradually, pushing her cock forward inch by inch to the rhythm of Luna’s breaths.

“Ahh,” sighed Twilight. “That’s my girl. I’m not too big for you, am I, Luna?”

“No…” moaned Luna, “no, you’re perfect…” she arched her back, thrusting her hips upward and taking Twilight deeper. “I love you, Twilight, I need you, I need to be a vessel for your seed…”

Twilight smiled, meeting Luna’s eyes as she pumped her hips slowly and rhythmically. Each thrust took her deeper into Luna’s marehood, and Luna’s happy sighs gradually rose in volume, becoming lusty moans - and then full-throated cries.

“Twilight!” she gasped, between thrusts. “I’m ready, Twilight… I want to be a mother again. I need to… feel your seed inside me… to nurture your foals, and grow heavy with new life…”

“Well, if you’re ready,” said Twilight, accelerating the pace of her thrusts. “If you just can’t wait to become a mother again…” She put her hands on Luna’s lower back, pulling her closer, and kissed her again.

Twilight could feel the pulsing in Luna’s marehood, the signal of oncoming climax tightening all around her cock. Twilight pumped harder, faster, feeling her own climax building in the base of her cock.

Twilight’s balls were more than capable of giving Luna what she needed; her magic stallionhood was a flawlessly engineered delivery system for a generous volume of potent seed. It was also a perfect implement to pleasure, just the right size to push her wives’ marehoods to their limit and give them an Earth-shattering climax…

Through their joined lips, Twilight felt Luna’s moans rising in intensity. Twilight broke off the kiss just as Luna’s climax struck, and Luna called out Twilight's name as it swept over her. Satisfied, Twilight decided to finish herself off, pumping recklessly until she felt her cock lurch, throb, and erupt.

Both mares came together, Twilight’s cock providing a princess-sized load and Luna’s pussy greedily taking it in. Luna’s body had felt such need, and the rush of cum was quenching that need and leaving pure satisfaction in its place. Her arms released Twilight as their climaxes cane to an end, and she fell limply into the bed. Twilight pulled herself out, dripping cum onto the rumpled bedsheets, and lay herself down between her wives.

“So,” said Twilight, “I didn’t want to ruin the mood by nagging you while we in the middle of things, but… did you both manage to cast the fertility spell?”

Luna and Celestia affirmed that they had.

“Good,” said Twilight. “The changes I made should have made it simpler to cast... but I have a bad habit of designing spells that make sense to me, but aren’t all that clear to other ponies. So I was worried…” she coughed awkwardly. “Well, anyway, I’m glad that went smoothly. Now we just have to do… the rest of it. The next eighteen years. Honestly, I think I’m more anxious than last time. I mean, the first time we knew it would be hard, and I was willing to cut us some slack if we weren’t perfect. Now that we’ve raised kids already, I’m thinking to myself… what if we do a worse job this time? What if we don’t meet our own standard?”

She sighed, taking a moment to calm herself. “I shouldn’t be that worried,” she said. “I mean, this time we’re not going to have nearly so many kids…”

She paused, leaving space for Celestia and Luna to respond - but instead they stayed silent and exchanged guilty-looking glances.

Twilight groaned and rolled her eyes. “All right,” she said. “How many?”

Author's Note

Unfortunately, there wasn't time/story flow to give every last one of the heavenly spawn a small scene. But they do all have names.

Celestia/Daybreaker's Daughters:
Amaranth
Dawn Hammer
Flare Dancer
Golden Shield
Gossamer
Heart Song
Radiant Sunrise
Ruby Flames
Summerfree

Luna/Nightmare Moon's Daughter's
Aurora Runner
Curio
Gentle Nova
Luminous Aether
Midnight Satin
Moonlight Lance
Serene Dusk
Tranquil Eve
Twilight Eclipse

Almost every name is inspired by one of Twilight's friends and family. Some are easy to guess others not so much. Can you figure out who is a tribute to who?