The same day:

Rarity brought two glasses of water out for her and Trace. The large zebra sitting down on her couch, the unicorn took a seat beside him. “Thank you, Rarity.” Trace smiled.

“Oh, it’s no trouble, Trace.” She said, returning his smile. “Thank you for deciding to help me take care of Sweetie, Dinky, and Senja today, while the others have lunch.”

“Oh, it’s no problem! I prefer to not get involved in the discussions they’re probably having… my wife has quite the penchant to nose her way into all the intimate details.” Trace chuckled.

Rarity blushed a little, nodding in agreement. “She certainly seems to be that way... no offense, of course.”

“Oh, none taken. She’s always been straight to the point. But, she is excited that you two are dating Rush… when Derpy sent us that letter, I don’t think I’d ever seen her so happy.” Trace sighed, smiling a little more. “But, Rush is her adorable little boy… so she wants to make sure he’s happy with you two. Personally, I don’t doubt that he is, not for a moment.”

Her smile turned a little more gentle, and Rarity responded with, “Well, the two of you seem to have raised one of the kindest and most loving stallions I’ve ever known, so much of the connection we all have is truly thanks to you.”

“You give us too much credit! Rush is his own stallion… he honestly still surprises us. He seemed so scared of mares and even fillies when he was younger. He was just so shy.” Trace chuckled, “My, to think he’d end up with two beautiful mares… he’s come quite a long way.”

“And now who’s the flatterer, hmm?” Rarity teased. “Besides, he’s quite good looking himself… and I think I know where he gets his looks from, now!”

“You seem to think I retained all this own my own. My wife is a savant with potions- she seems to intend to keep us looking young forever! It does help, though, having the muscles and body I had when I was thirty.” He sighed, “Though that most recent potion… it was quite useful, for a huge number of reasons.”

“What all did it do, again? I remember it had a lot to do with your, ah…” Rarity glanced away in embarrassment, “Male parts?”

“Well… it basically boosted every positive attribute I had. Muscles, height… made me grow at least five inches taller, but she can boost that further if you desire… Um, as for the other things… for me, it was another five inches in length… an inch in girth, and… well, you’d have to ask my wife about production, it… well, we never went through having to drain her prior to the potion…”

Rarity’s face was bright red as Trace spoke, but she managed to hold up a hand, stopping him from speaking. “That w-was… a little too much information, Trace… I-I do appreciate it, but, er… well, thank you for not being any more specific.”

“Well… there were less sexual changes that occurred. If you’d want to change the topic from sex.” He offered, “The muscles did boost my strength considerably, as well as stamina. That was much nicer for exercise… but um, the flipside is a higher amount of sweat… and a muskier, well, smell. It’s a bit much to get used to showering sometimes twice a day...” He sighed wistfully. “Though my wife doesn’t seem to complain, thankfully.”

“Strength and stam-mina… did… did you say musk? A-as in, er, the potion makes you give off a more powerful, m-more potent smell?” Rarity asked, biting her lip.

“Yes, it does.” Trace nodded, smiling a bit devilishly. “Why do you ask about that in particular?”

Her blush got brighter, and she shakily lifted a glass of water in her magical hold. “Th-that’s not important… and a lady’s secrets are her own. I’m sure your wife doesn’t appreciate having to do the laundry that much more often, and smell your… your scent in all of your clothes, so d-deep in them it shan’t ever leave…” Rarity whispered, her gaze getting unfocused as she looked at nothing in particular.

Trace began to laugh a little, “I’ll just keep this a secret… otherwise, my wife would just tear you to shreds to find out how deep it goes.” He shook his head, “You and Rush were made for each other, just as much as he and Derpy are.”

“Just as much as Derpy and I are,” Rarity added after a few moments, having come back to reality. “And… thank you. My apologies, Trace, I didn’t mean to, ah… lose control like that.”

“It’s fine.” Trace assured, “Now, is there anything else you’d like to know about what the potion did? I can keep it a bit less… intimate, if you’d like.”

“You said you look like you’re thirty again… how old are you, Trace?” She asked.

“Forty-seven.”

“Goodness… and Pia? If you don’t mind me asking, that is. She looks like she’s in… well, about the same range- early thirties.” Rarity said.

“Well, let me preface this- I’m actually about a month away from my forty-eighth birthday, Pia is four months away from the same. So she’s also forty-seven, just a bit younger than I am.”

“Really?” She asked. “That’s astounding… the two of you look amazing for your ages!”

“Thank you! I’m sure you, Derpy, and Rush will look just the same when you’re our age. If not better.” Trace grinned.

“If we’re lucky, perhaps.” Rarity giggled.

“You three are already so lucky, I wouldn’t worry about that for a moment.” Trace said, “Now, perhaps we should go collect the foals? We have a long and fun day ahead of us.” He suggested.

“Is that so? What did you have planned, Trace?” She asked.

“Why don’t we go to the park for a bit? Give the three fillies a chance to play, then go for ice cream? I can regale you with tales of Rush when he was a colt!” He said.

“Oooh, definitely!” Rarity said, smiling widely. “I bet you’ve got some good, juicy ones…”

“You have nooo idea.” Trace laughed, “I’ll go get the fillies! You just wait down here, it’ll only be a minute!” He said, standing up and walking to the bedroom the three fillies were currently in.

A small while earlier:

Senja, Dinky, and Sweetie were all up in Sweetie’s room playing with her dolls. All three of them were taking quite happily to their new found family thanks to Rush, Derpy, and Rarity, and the three fillies quickly becoming friends.

“Hmmm…” Senja paused, “Are we spending the day with Daddy and Rarity?” She looked up at the other two, still a bit curious as to why her big brother wasn’t with them.

“Yeah! Daddy and Mommy and Gramma are all out eating lunch, I think.” Dinky said.

“Oooh! I hope it’s a good lunch… but now I wonder what we’re going to do…” Senja scratched her chin.

“Maybe we’re going to go out to lunch, too!” Sweetie offered.

“Maybe they’ll take us to the park?” Dinky suggested. “That’s where Mommy and Daddy usually go when they wanna relax.”

“That’d be great!” Senja grinned, “Then we’d all get to keep playing!”

“Hey, Senja?” Sweetie suddenly asked, “What’s it like growing up in Zebrica?”

“Oh! It’s really fun, there’s a lot of open plains… a lot of fields, it’s just big and open. Everypony is really friendly with each other.” Senja began.

“Is it like Ponyville at all?” Dinky wondered.

“A bit… though it’s smaller.” Senja nodded.

“Oh! Where’s your sister?” Sweetie asked.

“She lives in Haywaii, I think she was really busy… I’m sure she’ll come out to visit when she gets a chance to though!” Senja replied, smiling a little.

“What’s her job? It’s gotta be good to live there, right? Cuz I think Momma once talked about Haywaii, and that it’s really epexn… e-espen… how do you say it, Sweetie?” Dinky asked.

“E… expen… expensive?” Sweetie offered, trying to sound out the word.

“Yeah, that’s it!” Dinky nodded. “It means, um, ‘costs a lot’. So what does she do, Senja?”

“She’s an actress! She does a lot of plays and musicals.” Senja explained.

“Oooh, is she in any movies?” Sweetie asked.

“I think… she’s currently shooting for one.” Senja nodded.

“That’s so cool!” Dinky said, jumping up and down. “What does she look like, huh? Is she really pretty?”

“She’s really pretty!” Senja nodded.

“I can’t wait to meet her!” Sweetie giggled, joining Dinky in bouncing. Soon enough, Senja jumped in as well, and the three fillies were bouncing in tandem, giggling and smiling as they did so.

“Eeee! This is going to be so fun!” Senja said giddily.

The door to the room opened up, “Hey, are you three ready?” Trace peeked in.

“Granpa!” Dinky squealed, running towards him and jumping up into him, hugging the tall zebra.

Trace hugged Dinky back, squeezing her softly. “Hi, Dinky.” He smiled widely.

Before she could answer, Sweetie ran up and hugged him too, her smile wide as she opened her mouth, and then stopped. She thought for a few moments, her brow furrowed, before saying, “...Dad, I guess? Cuz I’m Rarity’s sister… so yeah, hee hee, Dad!” Sweetie finished, nuzzling her cheek against his.

And then Senja ran up, latching onto Trace. “Hey, he’s my Dad!” She pouted, “I mean… you’re cool, so he can be yours too, I guess…”

Trace chuckled, “You three are adorable.” He grinned wider. “And…” His arms squeezed around all three of them, Senja now recognizing the look on his face. She began to try to squirm out of his arms. “As much as I’d love to tickle all three of you… We have big plans for today!” He let go of all of them.

“Hoo… you two are lucky. Dad’s a real tickle monster.” She warned them, her face deadly serious.

“Hey, so is Rush! He tickles me a lot. And I know he tickles Momma, too. But I think they always do it at night, because that’s when I hear them laughing… at least, I think it’s laughing. It sounds kinda weird.” Dinky explained.

Trace for the first time covered his mouth, a light choking sound being muffled, “Um… yes, that’s what they do… just… um, make sure to never interrupt.” He muttered quickly. “Lets… uh… go downstairs, Rarity’s waiting for us!” He was quick to leave the room.

The three fillies looked at each other, before shrugging.

“Adults are weird,” Sweetie said.

“Yeah.”

“Yeah! But they’re still nice.” Dinky pointed out.

“When they aren’t tickling us, that is,” Senja added. “Then they’re evil.”

Rarity looked over at Trace again, nervousness present in her gaze. “And you’re sure you can keep doing that with no trouble? They may be fillies, but still, they’re not feathers…” She said.

Her eyes were scanning over Trace’s body, which had Sweetie and Senja sitting on either held-out arm, while Dinky sat on his shoulders, all three happily laughing from the ride.

“Dad can handle it! He does this all the time with me and Mom, though usually, Mom’s the one sitting on his arm.” Senja said.

“It’s fiiine , I barely feel them.” Trace assured, “It’s nothing that I can’t handle.” He smiled at Rarity. “I’m honestly surprised Rush hasn’t done this for you and Derpy… though I’m sure it’s coming.”

“He hasn’t done this before with them, but he did once carry two really, really heavy rugs for Rarity, just like this. She was super worried about him, and so was Derpy, from what I heard.” Sweetie explained.

“Oooh… they must have been massive if it caused any worry…” Trace said. “Though I’m sure he didn’t show any regret for it.” He looked to Rarity.

She huffed. “Of course he didn’t. Even though he came back all hot and… and sweaty…” She said, shivering a tad before shaking her head free of such thoughts. “And honestly! You stallions and your shows of strength… yes, they’re impressive, but some mares like a little show of class instead.” Rarity finished.

“Oh, give him a chance. He’s not all strength. Just you wait until he gets on his own little shows… both him and Galila both have amazing skills in becoming somepony else, but you’d be surprised in how much they just enjoy being themselves too.” Trace said.

“He has a talent for acting as well?” Rarity asked.

“It’s nowhere near as developed as Galila’s, but he was more of an artist…” Trace nodded, “Just wait, I know it’s not too far off… and you and Derpy might just get dragged into it too.”

“You think they’ll act with Daddy?” Dinky asked.

“That’s up to them.” Trace said. “I’m sure he can convince them… but, you should look to Galila for her skills on the stage. I’m sure when she’s able to come… I believe she’s on set for a movie right now, cast in the starring role too! She’s a much, much better actor than Rush, but Rush is a much better artist with a pen and pad. He took after me in that regard.” He chuckled.

“I do suppose the name ‘Trace’ gives some hint as to where your talent lies.” Rarity admitted.

“A little, I suppose.” He laughed. “Though you could never assume what Rush is good at by his name.”

“True enough… why did you name him that, by the way?” She asked.

“Honestly? I really don’t know, it… seemed right I guess?” He replied. “Pia didn’t complain, in fact, she went with it and was overjoyed about it.”

“Is there a reason you and he are named, er… normal words, while the mares are all… not? I don’t mean to offend or anything.” Rarity assured him. “I’m merely curious.”

“Pia.” Trace explained. “It was… uh, decided with Galila that Pia would name the fillies, and I’d name any colts we had. So… yeah, she just got creative with the names.”

“And… are you two planning for anymore?”

“No. We’re getting far too old to handle raising yet another foal.” Trace shook his head, “But, if Pia wants more, I’m sure she’ll find a way to have more.” He sighed.

“I remember one time, Mom joked about having another after me, and Dad almost fainted.” Senja put in.

“She uses it as something to scare me.” Trace whispered, grinning a little.

“It really works,” Senja added. “Another time, they got into an argument, and Mom held up a fertility potion and told Dad that if he didn’t stop back talking her, she’d take it, and she said she wouldn’t tell him how long it lasted. He stopped.”

“Mmm…” Trace muttered, “She makes them stronger every time… and I’m sure half our town has had foals because of her potions..."

“And another time-” Senja started.

“Hey, look at that!” Trace interrupted. “We’re at the park.” He carefully set the three fillies down, grinning at Senja’s scrunched-up muzzle and giving her a little noogie.

“Hmph!” Senja fake pouted, now storming off a little ways, though she still remained well within sight. Sweetie and Dinky followed her, and soon the three of them were giggling and playing once again.

Trace let out a long sigh and sat down on a bench facing the fillies.

Rarity sat next to him, silent for a few moments before asking, “So… I believe I was promised embarrassing stories of my stallionfriend?”

“Aaah yes… well, I have quite a few.” Trace said, “Is there any point in time you wanted me to start with? When he was a colt, a teen, just before he left…”

“Definitely something from his teen years. Goodness… was he all tall and gangly, or had he not grown height-wise quite yet?” Rarity asked.

“He was short. Veeery short.” Trace laughed, “About a full foot shorter than he is now. Um, forgive me for this, but he was also… well the only way to describe him was being quite nerdy. Though he didn’t have glasses.” He paused his laughter as he explained what Rush looked like.

Rarity joined him, giggling for a few moments, before waving him to go on.

“You probably already know how shy he is around most mares… that was ten-fold in school. He never so much as talked to any mares! Even when his friends tried to force him to talk to his crush… my, he came home redder than a tomato.” Trace chuckled. “I’d never seen him so embarrassed in my life.

“Oh, yes, I can certainly imagine that.” Rarity nodded. “Anything else?”

“He and his friends always did stupid things… whether it be pranks, or dares. They just… well were a bunch of rowdy teens. But it got muuuch worse when they finally turned eighteen. Instead of coming to his birthday, he got nabbed by the town’s guard for streaking. Right across the square… of course, he did it at night.”

Rarity shook her head but smiled regardless. “I can only imagine the reaction of some of the mares in town.” She said.

“I believe it’s what caused him to leave! He had a constant stream of mares coming to try to date him… now, of course, he was interested. But… he was embarrassed.” Trace shrugged. “I’m sure if he hadn’t found you two, and he returned he’d been dragged right into a group of them… three or four. He’d never be seen again.” He chuckled. “There’s going to be some disappointment in store for quite a few mares when they hear about you two taking him. But, he’s happy here. No reason to change that.”

Rarity’s smile widened and turned a bit prideful. “Yes, he is happy here… and satisfied, I hope.”

Trace just laughed at her last few words. “Oooh, I’m sure he is…” He sighed, looking Rarity over for a moment, “Is there anything else you want to hear?” He asked.

Rarity stayed silent for a few moments, before glancing back at him, her face slowly turning red once more. “Is… is it truly that much more… potent? The… the musk?” She whispered.

“Yes, and… well, regardless of how much I exercise or how much sweat I accumulate… it doesn’t tip over to smelling bad. Just… he’ll have to keep it down, I doubt you’re the only mare in town attracted to musk.” Trace nodded, “And… make sure to use anti-pregnancy spells and herbs. They’re a must, even in off season. Anything else… I doubt you’ll want me or Pia to tell you. It’ll just be… best to find out on your own.”

Rarity nodded, her blush covering her entire face. “Good… good to know.” She mumbled.

“On a less… embarrassing note… he’ll probably have some growing pains, and other… things that come with a sudden growth spurt. He’ll have to be careful with his new body. Along with new clothes.” Trace began.

Rarity bit her lip. “I do hope to see him burst out of at least one shirt before he catches on.”

“I’m sure that’ll happen.” Trace laughed. “Then there’s just… getting used to the new height. That’ll be interesting.”

“Oh, drat. We may have to get the houses made larger, vertically.” Rarity realized. “He’s already quite tall…”

“It probably won’t be feet that he grows… I’d say a good six inches maybe. Enough that he’ll have to duck a bit more often. But nothing that’d require major renovations.” Trace assured.

Rarity hummed. “Mmm, alright. We’ll just have to see, I think.”

“I’m sure all of the changes that happen will be to both yours and Derpy’s liking. And I’m also positive it’ll make Dinky even happier to have him as a father, and Sweetie to have him as a brother.” Trace added.

“Oh, I don’t doubt that. Pia wouldn’t make her son- or her son’s marefriends- unhappy with the changes to him.”

“She wouldn’t dream of it. But, she might want to talk with you and Derpy privately to do any specific things if she can achieve them.”

“Just… how good of a potioneer is your wife, again?” Rarity asked.

“Heh… basically, if it’s feasible to make into a potion, she can do it with no issues.” Trace began, “She’s -and this isn’t just me being married to her talking- a master when she gets to work. It’d be hard to top her.”

“Really… well, I can assure you that Derpy and I will hash out any and all details with her before anything is introduced to Rush’s body.” Rarity said.

“I’m sure you both will.” Trace nodded, he paused. “Tell me… Do you know any silencing spells?”

“Er… yes, I do. I took the time to study up on them when… I first met Rush.” She told him.

“Well… it appears you and Derpy will need it.” Trace didn’t elaborate further. “We should go gather the fillies… and go get some ice cream now, right?”

Later that night:

Rush had walked his father and the three fillies to Derpy’s house, giving her a kiss goodnight before he headed back to Rarity’s. He let out a long, relaxed sigh as he closed the door behind himself, leaving him and Rarity finally alone.

“Did you have a good day, darling?” She asked, her voice calling out from the kitchen.

“It was… interesting…” Rush said a bit dryly as he walked towards the kitchen. “How was yours?”

“Mmm, it was… enlightening. I learned a little more about what the potion your mother made does, and I also listened to a few stories about you… you naughty little streaker.” She teased, winking at Rush.

Rush blushed a little, “He… well, um…” He mumbled. “That’s… g-good… Derpy and I… h-had to explain everything we’ve done in graphic detail...”

Rarity guffawed, her jaw dropping before coming back up as she fell into a fit of giggles, one arm wrapping around her middle while the other acted as support against the counter. “O-oh, goodness! Rush, that… my, my, you have my sympathy… thought I am glad it was you, and not me.”

Rush stared at her as he slowly came up behind her. “Really?” He asked, wrapping his arms around her. “I was guessing you’d be more than happy to share your experiences with another mare… it’s not like she told us about hers.” He laughed quietly. “I’d have broken from hearing any of those stories… At least you had more fun than Derpy and I did.”

This stopped Rarity’s giggles, and she looked up into his eyes. “R-Rush? Is everything alright, dear? I hope I didn’t go too far…”

“No! You didn’t go too far.” He smiled, nuzzling her. “So, did you find out anything interesting beside my one case of streaking?” He let go of her, “Or did you let anything juicy slip?” He teased.

Rarity didn’t answer, but her blush was enough for Rush to deduce that something had happened.

Rush began to laugh, “Oooh… what did you say?” He whispered. “C’mon Rarity… you can tell me anything.” His grin grew devious. “Oooh, did you let it slip? Your little fetish…”

Once more, Rarity said nothing, yet her red face grew even redder.

“You did!” Rush said giddily before wrapping his arms back around her. “Don’t worry… I’m sure nothing will come of it…” He whispered.

“Y-you had better stop it!” Rarity huffed, weakly squirming in his hold. “You r-ruffian…”

“And, what was that about the potion?” Rush inquired, squeezing her a bit tighter.

“I-I… I asked your father about th-the… the details of what all it did.” Rarity said. “Some of them were… well, a bit more intimate than I would have preferred... but nonetheless, it was informative.”

“That's what you get from my parents… no details spared.” Rush chuckled.

“We went on to talk about you, and his wife threatening him with more children.” Rarity continued, settling back against Rush.

“I’m honestly not surprised that Mom wants more foals… even after Senja, she said it wasn’t enough.” Rush nestled into her mane. “You know… since you and Derpy’s teasing yesterday, I’ve wanted to ask you about one of the things you said in particular…”

“Mmm? What’s that, dear?” She asked, leaning her head up to nuzzle her snout against his.

“Well… the fact that, after I mentioned tying you and Derpy together… you called me Master, and... it got me thinking…” Rush took in a deep breath, returning the nuzzle. “Now… I’m not really into that sort of thing… like, going all out with it at least.”

“Oh! Well, that was more of a, well, ‘spur of the moment’ sort of thing, darling…” Rarity said. “Though… I have the feeling you’ve more to say.”

“I was thinking a lot about it… just, what I honestly felt and if you or Derpy called me such. I wouldn’t tell you both to stop. But… for all intents and purposes, it’d just be roles played by name.” Rush explained. “Honestly, there’s a lot more I’d like to do… and I feel like, you or Derpy calling me Master would just… bore me quickly.”

“What do you mean? As in, what else are you hoping to do, Rush?” She asked, turning around in his grip and leaning back, so she could see his face.

“Well, there’s a lot…” Rush laughed quietly, “Um, after Nightmare Night, I can think of a few right off the bat… you both being princesses…” He started. “Or, you and Derpy being courtly concubines… Coming to please your king.”

“Ohhh… I see, now. You like to roleplay, darling?” Rarity pretended to realize, a smile working its way onto her face. “That’s it, yes?”

“Yes, I love to roleplay.” Rush nodded, “More complex ones… I usually like to have parts of it planned out. Clothes… things that’d be needed. It’s just… Pet-play is so… empty in that regard. At least I think it is.”

“You like to have a story… a beginning, middle, and end. Like… an erotic sort of play.” Rarity offered.

“Yes!” Rush nodded, “Exactly! And, I’d love it if both you and Derpy wanted to try it with me. I think it’d be really fun, we can spend a bit of time coming up with a scenario… and after everything is together… just go through with it.”

“That sounds like a wonderful idea, Rush.” Rarity said. “And I’m sure Derpy will love it, too.”

“I can’t wait!” Rush nuzzled Rarity, kissing her on the lips as his arms squeezed her in close.

She eagerly returned the kiss, happily taking in his affection before pulling away, and saying, “Perhaps… we could do a little bit of both of our respective fantasies, tonight?”

“Of course… we’re all alone, we could do anything we desired, no pony to find or hear us.”

“Then why don’t you use those delicious muscles of yours, and carry me up to our bedroom, dearest?” Rarity purred. Rush slid his hands to her flank, grabbing the flesh in his hands as she was hauled into the air.

“Sometimes… I might just surprise you in here… strip you down and rut you on the countertop…” Rush whispered teasingly as he carried her out of the kitchen, his pace purposefully slow so he could continue to drive his fingers into her flank. “Or maybe I could slip into the shower with you…”

“Nnn… those both sound like wonderful ideas, Rush…” Rarity groaned, wrapping her legs around his waist. “Perhaps… one day, when you’re helping me with all of my paperwork… I’ll slip down under your desk, and show you my appreciation.”

Rush licked his lips, grinning down at her. “That sounds amazing…” He kissed her, “There’s so much we could do together… so very few places we couldn’t try something .” He joked. “But for now…” The two were finally in her bedroom, and he slowly set her down, now towering over her -more so than usual. “We have this nice big bed to use… and all night to spend with each other.”

Author's Notes:

And so, another chapter goes by!
Took a while... but I'd like to think we got a good bit introduced within it.

As always, many thanks to Patric12345 for being the best co-writer ever, and just as much to Ferrari for being a supporter on Patreon!
Toodles!
~TOOWC