Luna’s reaction was roughly what one might expect. Having returned early from her nightly duties, she immediately scooped Thomas up in her magic, turned him this way and that as she examined him with her eyes, spells, and everything else at her disposal, all while she and Talon accosted him with questions. Feelgood had sent them a scroll. Interestingly enough, Surprise remained silent while observing with wide-eyed wonder. At the same time, guards and other servants hurried to close the doors while pretending to not notice the harem’s personal drama. Then, just as the noise had gotten too much for the human and he moved to cover his ears, the white mare cupped her hands around his puny form, snatching him out of the air and flying him to a safe distance.

“Too loud,” Surprise chided in a library-appropriate voice as she hovered near the ceiling, Thomas concealed behind her fingers.

Luna’s bristling fur and burning eyes made her look ready to do a violence on her plump lover, but then she took a second to calm down and process her words. “Y-you are right,” she conceded, dimming her horn and bowing her head in supplication.

“Shit, sorry,” Talon added as she rubbed the back of her head.

Smiling in satisfaction, Surprise removed her upper hand from Thomas, exposing him to a smile far brighter than the lamplights and compelling him to cover his eyes. “Hehe, better?”

Thomas eventually sat up, noting how he now sat in a new hand before spying the well-meaning ladies who had accosted him, looking apologetic. “Yeah, I think I’m alright,” he said at what he hoped to be a suitable volume for his diminished size, keeping his eyes on the white mare so he didn’t have to look down. Even so, a fleeting glance at just how high his seat hovered made the young man’s stomach lurch. “Thanks for worrying about me.”

The alicorn and wren’s expressions lifted as Surprise descended. The pegasus held Thomas for all to see, but kept him close to her chest in case he needed an escape. Soon, the other mares joined the viewing party, and Thomas’ pulse began accelerating under such enormous eyes.

“Whoa, back up, ladies!” Surprise declared, stepping back without jostling her passenger. “The little guy spooks easy.”

“Ugh, we’re back to that?” Talon groaned. “Stars above, it took so much work to get you past that the first time!”

“Oh yeah?” Thomas retorted. “Well, how about we swap sizes and see how well you like it.”

Talon beamed in approval. “Alright, not totally spineless. I can work with that.” She then looked at the alicorn. “Also…”

“No,” Luna denied, shaking her head as she magically materialized a scroll. “I asked Dr. Feelgood to send me this summation of events, including the spells used, and I fear that any magic too complex will only exacerbate the issue, likely in unexpected ways. Thusly, a direct reversal is not an option at this time.”

“So, this is probably going to sound annoying, but I have to say it anyway,” Surprise began. “Are you feeling alright, ya know, all things considered?”

After a moment’s thought, Thomas nodded. “Honestly, yeah. This is about what it was like when I first came to Equestria. Only, instead of being all alone, the number of people who can accidentally sit on me has skyrocketed. So, still waiting to see if that’s a worthy tradeoff.”

Talon nodded. “Still a smartass. Good. I’d have been worried otherwise.” She then faced the other mares as they finished cleaning their messes. Sniffing, the griffon asked, “Also, what were you guys doing?”

“We wanted to take Sir Thomas’ mind off his recent problems, one discussion led to another, and he provided insights into the shrinking fetish,” Silver succinctly answered.

“Seriously?” Surprise chided. “I mean, I’d be lying if I said I wasn’t a little curious, too, but there’s a time and a place for these things.”

“Hey, we were only talking,” Thomas countered, only for the new trio to narrow their eyes upon him. “Uh, it was… an intense talk,” he phrased like a question.

Luna’s ear flicked as her nostrils flared. “How intense, exactly?”

Surprise rolled her eyes. “Ugh, I should have betted how long it’d take for us to catch the horniness.”

Talon chuckled and put a claw on the white mare’s shoulder. “Alicorns have literally insane hormones, filly, and they pretty much default to sex whenever dealing with any kind of stress. The moment they get a breather, any bet over a minute is automatically invalid.”

Surprise nodded. “Your wisdom is most appreciated, master. I shall strive to take your lessons to heart.”

Luna merely rolled her eyes. “That is a gross exaggeration. Alicorns have other coping mechanisms.” Then, as Talon leveled a withering glare on the larger female, she added, “We dooo! The pleasurable company provided by concubines extends beyond your bodies, you know.”

“Oh? So you keep me around for my charm and insightful wit?” Talon asked, striking an elegant pose that wouldn’t be out of place in a fashion magazine, and then she maliciously farting, fanning the air with her tail and wings.

“Charm is certainly a word for it,” Luna allowed before returning her attention to the human. “My analysis concurs with the doctor. Your condition is stable, yet your predicament is…” The mare gestured at the little man. “We will have to make arrangements.”

“Yeah, how’s the little guy supposed to get around?” Surprise asked.

Talon huffed and folded her arms. “Yup. Looks like you’re on your own for this one, mini-chimp. It sure does suck that you don’t have anyone who already follows you around like you’re glued at the hip. Then, we could just have you ride on her shoulder or something. But, since I can’t think of anyone like that,”—she glanced at the unicorn—“I guess it’s up to me to knuckle under and be your personal chauffeur.”

Accepting the challenge, Moonlight stood, closed the distance, and expectantly held her hand out to Surprise. The pegasus moved her passenger to the unicorn’s open palm, allowing the human to hop to his new carrier. The mare and man then shared a smile before she carefully placed him on her shoulder.

Thomas fixed his hands on the joint layered beneath hard muscle as he struggled to hold his balance. He was more mindful of the mare’s breathing from this new spot, and when she turned to get a better look at him, he braced himself for impact from her long face. “Man, the pictures make this look so easy, but the shoulder is a terrible place to keep someone.”

“Ya sure? Fluttershy lets animals sit on her shoulder all the time,” Talon argued facetiously, like she already knew the counter, but still wanted to say it.

“Those animals either have wings or climbing claws.” Thomas extended his foot and wiggled his toes. “I ain’t got neither.”

“Shy also lets critters perch on her teats,” Talon added with a wry grin before meeting the unicorn’s eyes.

“Are you serious?” Moonlight asked in wide-eyed astonishment.

Talon gave a firm, audacious nod. “Indubitably.”

“Can you even spell that?” Thomas questioned.

“No, but I see the issue.” Talon grabbed Moonlight’s breasts, causing the mare to flinch from the unexpected contact as the wren pushed the flesh orbs together. “Not enough meat on these teats.” She then released her grip, letting the boobs bounce back to their default position before running a claw through the boob gap and along the mare’s sternum.

Moonlight blushed in embarrassment, feeling more insecure about her breast size than ever before.

“I’m not sure size is the problem,” Surprise said, using her shoulders and upper arms to squish her mamma jammas together. When she released the pressure, her boobs were at least still touching, but she remained unsatisfied as she ran a finger through her cleavage canyon. “He’d fall through the moment I relax.” Then the mare turned her body and drew attention to her shapely rear, eyes ponderous. “Maybe if we—”

“Ugh, just wear a bra!” Thomas blurted in frustration, unsure if the ladies were going out of their way to be difficult and ignore the obvious solution. However, the look of surprise on their faces suggested the idea wasn’t so obvious to the Equestrians. “Uh, yeah, a bra should hold everything in place. Ya know, unless someone wants to wear a shirt with pockets, or something,” he apologetically added.

“Uh, Ah left mine in mah drawers,” Honey admitted as the other mares nodded and muttered in agreement.

Luna’s horn lit as her sparkling gown disappeared, haphazardly discarded to the table through teleportation as her sports bra manifested around her newly naked top. Then, much to Thomas’ relief, she didn’t simply levitate him into her top, but extended her hand to Moonlight, allowing him to change mares on his own. It was nice how they gave him such a courtesy, at least. However, once in the new mare’s grasp, the larger hand still maneuvered him like an object into the cleavage.

Thomas’ heart rate skyrocketed as the mountain-sized melons drew near. His proximity and new size enabled him to distinguish each and every individual hair and dimple in the cleavage valley. As Luna’s fingers gripped him, he held onto them as they slipped him into the cleft of compressed flesh. Luna’s boobs were traditionally soft and warm in all the best ways, but this time felt different. As his feet slipped inside, disappearing into the cleft, he likened the sensation to more like a bouncy castle. She was still soft, but much firmer, and she also felt a lot hotter. Regardless, despite motor-boating these babies countless times, the smell of boob sweat was stronger than ever, and his erection was just as hard. It felt awkward to pop a boner with everything else going on at the moment. However, first of all, Thomas wasn’t sure if this was a new boner, or if he’d kept the one from talking dirty with the others. And secondly… giant boobs. That seemed like sufficient justification to invalidate all other arguments. Then, before the human knew what had happened, Luna’s fingers departed, and he was waist-deep in giant mare boobs.

“Well?” Luna asked expectantly.

When Thomas didn’t immediately reply, Talon added, “How are the titanic teats, chimp?”

Snapping back to reality, Thomas looked down. Everything below had been enveloped by indigo cleavage, with his legs tightly packed together. He tried twisting in his new confinement, but the boobs held fast. However, there was just enough friction to tease his already overstimulated pecker, making the young man purse his lips. “Well, uh, I don’t think I’ll fall.”

“Ya better stress test it, though,” Honey advised before facing Silver and Moonlight. “Mares with more ta work with gotta be extra sure that everythin’ stays where it oughtta when yer movin’ ‘round.”

Silver blinked up at the tall mare. “Did you just brag?”

“Jus’ statin’ facts,” Honey deadpanned.

“She’s lying,” Talon stage-whispered.

However, Luna tuned out the peanut gallery and began walking around the room. The others gave her space as she experimented with different kinds of strides, from a casual walk to a hip-wagging stage swagger. “Anything?”

“Uh, nah, so far, so good,” Thomas reported. The bounce with each step causing the breasts to slightly rub around him seemed too obvious to be worth sharing.

Nodding, Luna moved on to more elaborate actions, such as running in place and bouncing, only to stop when Thomas grunted. “Goodness, are you alright?”

“Uh… I don’t know,” Thomas admitted with a half-hearted laugh. “The boobs kinda, I guess, clapped around me, and… Ya ever been knocked down by a giant beach ball? Well, I just got crushed between a pair.”

“Did it hurt?” Talon asked.

“Uh, minor impact damage, I think, but otherwise, I think I’m good.”

“Good, because I’ve been watching you this whole time, and I’m not the only one getting jealous,” Talon said while gesturing at the other mares. She, Silver, and Surprise all had wing boners, Moonlight hugged herself while staring intently at the tiny human, and Honey wouldn’t stop massaging her breasts together like she was practicing to give someone a boob job.

“I must admit,” Luna began, her breathing heavily as she knew Thomas could feel her pulse. “Your motions between mine teats, while minor, are no less… noticeable.”

Thomas blinked rapidly as he stared up at the giant nostrils looming overhead. Luna had no visible nose hairs or boogers, but each breath felt like someone had opened the door to a sauna. He then looked down to where his boner was still enveloped in cleavage, along with everything below the hips. “So, uh, does this count as you giving me a boob job?”

***

Meanwhile, just beyond the haphazardly sealed doors, Jet was stricken by the odd compulsion to slam her face against a wall. Then she glanced over her shoulder, certain she knew the culprit responsible for this impulse.

***

“I suddenly have deep regrets for not inquiring more deeply into my parents’ whorse,” Silver admitted. At the others’ confusion, she elaborated, “I had mentioned earlier that my parents often contracted a whorse to—as I understood it—engage in shrink-play with them. Now, I wish I understood the process better.”

Talon’s beak curled into a wry grin as she slowly faced the Princess and her passenger. “Really? Too bad we don’t have bucking experts around here that might fill you in on the juicy details.” Then, after a brief pause, she pointed her thumbs at herself and added, “Of course, I mean me.”

“P-Princess Celestia shrinks!?” Moonlight asked in low-key alarm.

“She plays with size in every way you can imagine,” Talon slowly boasted, drawing out each word as she lorded her expertise over the others, only to rethink her position. “Well, in every way they can imagine,” she amended while gesturing at the alicorn and human. “The rest of you are still basically newbs with no idea just how wild alicorns can get.”

“Oh? Would you care to elaborate?” Silver asked in a tone that sent chills through everyone’s spines.

“Yeah, back up a second,” Thomas interjected, glancing in concern between the alicorn and griffon. “I remember you guys saying Luna was basically still recovering from Nightmare Moon, and she’d need more concubines to handle her needs as she did. You’re saying there’s still more!?” He faced Luna in horror, silently pleading for this to be some terrible misunderstanding. Surely, she couldn’t get any hornier than she already did. Surely!

Wincing apologetically, Luna held up a hand where the human could see and pinched her thumb and trigger finger to roughly an inch apart.

Thomas went limp in his boob seat. “I’m gonna die by snu-snu,” he stated in reverent awe of the inevitable.

“Ah feel like we’re gettin’ off track a tad,” Honey interjected. “Weren’t we ‘bout ta get inta playin’ with size ‘n’ how ta do it safely? Cuz, Ah don’t know ‘bout the rest ‘f ya, but Ah’d really like ta try.”

“Oh-oh-oh! Me too!” Surprise chirped while excitedly holding her hand up like she wanted the teacher to call on her. “Only if it’s safe, though.”

“Oh, there are most certainly ways,” Luna confirmed, staring with naked lust at the man between her tits.

“F-Feelgood mentioned wards,” Moonlight reminded as she held up the spell list.

Instead of levitating the list to her face, Luna walked to the unicorn, taking steps heavier than necessary to force her breasts to bounce. She then bent over to read, trying to not make it too obvious how she rocked her torso to make her massive mammary glands sway. “Hmm, yes, I imagined this would be the case.” Straightening her posture, the alicorn then folded her arms under her chest to push up her boobs. “Aside from actual size alteration, safe shrink-play generally involves only a few simple spells, with only a few not listed here.”

“Wait-wait-wait!” Moonlight rambled, closing her eyes and stepping aside for some air. Watching Thomas bounce in Luna’s boobs had been overstimulating, and she needed to clear her head. “Are we really going to do this? I mean, it was one thing to talk about it, but we’re really going to…” She gestured vaguely at Thomas. “With him in…” She then gestured at her groin.

“Thomas,” Luna gently called. “As your Princess, ruler, employer, and lover, I hereby order you to not feel peer pressure.” Her formal statement left everyone speechless as they waited to hear the rest. “I have always found your features attractive, and this recent development has only made you more adorable. These are objective facts, as is my wish to act on my desires. However, I order you to disregard mine and everyone else’s feelings on the matter. Our hypothetical disappointment is irrelevant compared to your safety and comfort. Therefore, Senior Concubine, given that it is time for my late evening release, I ask that you conduct events to your liking.”

Thomas blinked once as he processed Luna’s weighty words. “Oh yeah, I’m the Senior Concubine,” he remembered aloud. It had been a small eternity since he’d last thought about his title and its implications. It was his duty to satisfy Luna’s lust, which he believed he’d gotten quite good at. The young man liked to imagine he wasn’t a selfish lover and always prioritized the others’ feelings. After all, they seemed to like what he did, and he liked doing it. However, Luna asking him to put himself first felt off. It was perfectly logical under the circumstances, but the idea still didn’t sit right with him. “Sorry, but that’s easier said than done,” he admitted, not noticing how shocked the others looked.

“Are you defying me?” Luna questioned. She hadn’t used the Royal Canterlot Voice, but the technique was more refined, speaking with sufficient gravitas and authority that only those with strong convictions could refuse. Although, knowing Thomas, it was more likely that being a different species or his general lack of social awareness left him immune.

Thomas sighed. “I’m not sure if we’re playing around or if that’s actually supposed to mean something—”

Called it.

“—but if I’m being honest, this whole thing is freaking me out, and that just makes it even hotter,” he admitted. “I’m… curious.”

Luna licked her lips. Even if Thomas had merely exploited a loophole, challenging her as he had, despite his meekness, was still a massive turn-on. “So, thou wishes to try?”

“Oh, there’s lots of things I want, but as far as stuff I’m willing to commit to…” Thomas trailed off as he considered his phrasing. “Mmmaybe a little.”

Talon opened her beak to make a pun, but thought better of it.

“This is one of my fetishes, the kind of fantasy I thought I could only experience through stories and pictures. So, if magic makes this common enough to have standard safety practices, then I’d be lying if I said I wasn’t tempted.”

“He said while sitting in temptation’s tits,” Talon remarked, earning several scowls and one thumbs-up.

Thomas smacked his lips. “No, that’s accurate,” he reasoned. “Sooner or later, this is gonna happen. So, since I have the option, it might as well be on my terms, right?”

Luna nodded, concealing her giddy anticipation behind a stoic poker face. “Indeed. So, how would you like to proceed?”

Thomas’ perverted grin split his face as a wave of ideas flooded his twisted little mind.

Back in Luna’s room, which is 90%+ of this story’s setting, Thomas and half the harem try to act rationally and talk things out. That only lasts so long before the horny idiots start acting like, well, horny idiots. It was all well-intentioned at first. They just wanted to lighten the mood. However, in so doing, they may have stumbled upon new desires.

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