Author's Note

Now, I do not write sex scenes, I have no experience writing sex scenes, but I've always wanted to take the themes used in explicit fanfiction and write something around it.

So, that's what this is, a sex-themed fic with a heavy focused on worldbuilding and whatever I think would be fun to add in. I can't guarantee there will be sex in every chapter, but that isn't the point of the fic.

With that in mind, please let me know what you think, and also if I missed any typos.

The Greenhouse

International Estrus Healthcare

Heats & Ruts handled safely and sanely.

The pale blue walls of the building interior matched well with the darker blue carpet, and from where she stood beside her locker in the staff changing room, the grey-furred, white-maned kirin mare could hear the faint chatter of the tour group outside in the waiting area.

The group of six she was going to lead on a tour of the facility had shown up rather abruptly, and one of her co-workers had rushed to her, asking her to handle the situation. Walk-ins weren’t uncommon, and by the time she had made it to the changing rooms to don her dark blue jumpsuit uniform, the group of mares waiting for their tour were still in the middle of filling out the extensive paperwork necessary to continue into the building, their manes still slightly damp from the showers they all had as per regulations.

The kirin herself took her time getting dressed, combed her fluffy mane to be as neat as she could get it, secured her communicator and utility belt, and slipped on the set of shoes by the door on her way out.

The waiting room, as was most of the public areas of the building, were decorated in calming shades of blue, chairs adorned with cream-coloured cushions, and pictures of picturesque landscapes dotted the wall.

And scattered around the room, all in the plain grey jumpsuits they’d been given at reception, were the six mares that were her spontaneous tour group for the afternoon.

It was rather strange to be hosting some of Equestria’s national heroes, but it explained the rush everyone had been in to accommodate them.

Fates help them if the princesses ever showed up, everyone would be about as useful as headless chickens.

She cleared her throat.

“You’re all here for the basic tour?” she asked, and six pairs of eyes were quickly focused on her.

The one in the seat closest to her spoke up, Twilight Sparkle from what she remembered from the news articles from a couple months back. “Oh, um yes! That’s us!” the unicorn was nervous, the pencil held in her magical grip spinning in mid-air in a nervous fidget.

The pink earth pony sitting by the door that led to reception excitedly waved a hoof.

“Hi Floret!”

She was caught off-guard, momentarily forgetting that Pinkie was also among the ragtag group of heroes that defeated Discord, but nodded politely nonetheless. “Pinkie.”

Floret turned her attention back to the group. “My name is Oat Floret, and I will be your tour guide this afternoon.” She eyed the gathering of mares. “Is everyone done with their paperwork?”

“Hey, why do we have to fill out all this stuff anyway?” Rainbow Dash asked as she hovered in the air, tugging at the neck of her jumpsuit, paperwork in a messy pile on her chair. “And what’s with these uniforms?”

Floret blinked at her, the answer rolling off her tongue with practiced ease. The amount of work required to enter the facility often confused most newcomers, and she enjoyed leading them through the reasoning behind how things worked at the facility as much as she did handling these tours.

It was fun, to be the informative one.

“Safety, given the nature of what we do here at The International Estrus Healthcare Facility, everyone that wishes to make use of the services we provide must pass both a reading comprehension test, medical test, and wear our industry standard uniform for the duration of your stay.” She explained.

“Yes well,” Rarity began, and Floret internally sighed. “I would have thought the uniforms would be less…drab.”

Floret snorted. “What, you expecting maid outfits or lace?” Several mares blushed at the suggestion, Pinkie looked unfazed by the choice of working, Rainbow snickered at the idea, and the orange earth pony with a cowpony hat, Applejack, chuckled good-naturedly. Floret smirked. “What you’re wearing is to prevent any unnecessary leakage and to maintain our code of hygiene.”

Now almost everyone was blushing. Floret heard a quiet “Oh my...” from the quietest member of the group.

Pinkie laughed. “Come on girls! You wouldn’t want somepony to slip on anything,” this caused those blushing to become even redder at that mental image. “I mean, why else would they make these with detachable underwear?”

“Pinkie!” Rarity hissed from her seat beside Applejack. “There is no need to be so crass.”

“This isn’t a tea party Rarity,” Pinkie replied and grinned mischievously. “This is a rutting, fuckfest extravaganza!”

Rarity sighed in exasperation.

Floret continued to explain as she motioned for them to head to the double doors that led to the rest of the facility. “The forms are there to make sure we can safely cater to your needs, and to prevent those that are underage from wandering in here accidently. This is an adult-only space.”

The Greenhouse was a series of rooms with floor-to-ceiling windows that housed the large Mossbeasts that chose to work there. Several of the windows were covered by metal plating to obscure the surrounding rooms. The air within was crisp as each room resembled a small swath of forest, trees, ferns, and small plants scattered about, with the large, moss-covered creature curled up in the middle of the room.

Floret led the ponies inside and the creature raised their round, bulb-shaped head to watch their guests. Mossbeasts varied in shape, but all had a fine coating of leaves, moss, grass, or other plant matter instead of fur, feathers, or scales, and all were telepathic.

Her tour group milled around the entrance, Twilight watched in fascination, Pinkie’s grin was knowing as she giggled, and Fluttershy was looking about the room in quiet wonder as Rainbow hovered in the air beside her.

Applejack whistled in appreciation. “Got some good-lookin’ plants and healthy soil in here, quite the set-up you’ve got.”

“As nice as this is, why are we here?” Rarity asked as she looked to be eyeing the dirt with disdain.

Floret trotted up the giant being in the centre of the artificial clearing.

“Hey Herbert.” Floret greeted.

“Afternoon.” Herbert rumbled.

There were gasps of wonder from the gathered group of mares. Herbert chuckled and adjusted to lie more comfortably in the loamy soil.

Floret felt the familiar spark of energy, the joy of sharing and teaching as she gestured a hoof at Herbert. “For centuries, Mossbeasts have lived in harmony with various other intelligent races in a symbiotic relationship.” She explained, lips twitching into a smirk. “In return for providing a stable, and safe environment for their eggs to incubate, Mossbeasts provide society with herbs, magical plants, and fruit that are used as medicine all over the world.”

“Medicine?” Twilight asked and Floret was pleased that someone was taking interest.

“Their leaves are used as a painkiller, a substitute for those that have an allergic reaction to penicillin, some of their herbs interact with the brain to level hormones and ease heats or ruts. Others act as contraceptive--”

She was expecting the inevitable interruption. Rainbow was the first to butt in.

“Wait, I thought ponies come here to get rutted, not prevent it?”

“Gosh darnit Dash…” Applejack said and looked over at Floret apologetically before looking up at Rainbow. “Not everypony has an easy time during the season.”

“Yeah, but kind of weird that ponies would go to a place like this for heat suppressants.” Rainbow replied.

Floret looked at Rainbow and kept her voice calm as she explained. “And why wouldn’t someone have the right to take suppressants at a healthcare facility?” she said. “Some, regardless of species, experience heats or ruts with detrimental, and oftentimes painful symptoms. These symptoms are best treated with hormone-based contraceptives, whether or not the individual is sexually active.”

She levelled a flat stare the Pegasus. “But no, heat suppressants mean they are having sex, my mistake…”

It was a bit of a sore spot for her, and unfortunately the topic of contraceptive, suppressants, and hormone treatments in general were a topic many felt strongly on. Usually associating the act of taking such medication with being sexually active, and Floret was so very tired of this opinion.

Fluttershy spoke up, genuine curiosity in her voice. “It sounds like you speak from experience.”

“Been on the pill since my first heat, keeps the headaches manageable.” She explained clinically.

Twilight winced in sympathy. “Magic overflow during heats…yeah, not fun.”

“So that’s why you get extra cranky during your cycle.” Rainbow exclaimed and Twilight shot her a look. “eheh…sorry.”

“Enough about that,” Applejack said, deterring the conversation back on track. “You mentioned incubation for the big fella’s eggs? I’m guessing you mean living incubators?”

“Living?!” Fluttershy squeaked, face as red as a tomato.

Pinkie’s grin got wider.

The reactions were amusing to watch as Twilight looked at Herbert wide-eyed and Rarity spluttered.

“If you’re not comfortable with seeing genitals—and everyone has limits and boundaries with that sort of thing, I can skip the visual aspects of this section of the tour,” she stated.

No one objected.

“Right, Mossbeasts reproduce via self-fertilized eggs. These eggs are implanted into a willing host, which then absorb the host's genetic material, and are fertilized by the mossbeast afterwards.” She remained clinical, curt, but she could see that the cut-and-dry explanation was going over some of their heads. “Herbert…” she deadpanned.

Amusement danced in her mind as her reply and Herbert sat up, underbelly covered in brown, bark-like scales.

And the pulsing, pale green tentacle-like organ that protruded from the swollen sheath between his hind legs. The head of which was shaped like a flower bud. It remained erect as all eyes in the room were drawn to it.

Floret punctuated the silence in the room with a few simple words.

“Tentacle dick,” she said.

She reached out to pat Herbert fondly on the leg. “They vary in size, shape, and technically their dick is an ovipositor. But generally, mares in heat can choose to be incubators for these guys,” she said. “The first round of sex is to get the eggs in you, closer to seed pods than eggs, but anyway, the second round is you know, sperm, or at least their equivalent of it.”

Tailwind was the one in charge of Mossbeast bookings. With the thought in mind, held her comm in her magic and set it to the right channel.

“Got a tour group here in Herbert’s room, any adjacent public sessions I can use for a demonstration?”

“One sec,” The radio crackled slightly, and the sound of rustling paper could be heard. “Got a client with Rex that’s in the middle of her session, have at it.”

“Thanks dude.”

“Enjoy the show.”

With her comm turned off, she clipped it back onto the little holster sewn onto the neck of her uniform and walked over to one of the covered windows. Attached to the metal window frame was a switch.

A flick of the switch sent the metal panel upwards, back into the ceiling. The room on the other side had large rocks scattered about, and what looked to be the opening of a den dug into the earthen floor.

Within the middle of the room was a mare. Her legs spread wide to hold her weight as a wolf-like mossbeast, covered in dense grass instead of fur, loomed over her.

The front half of his body rested on her back, head resting atop hers as his own hind legs dug into the ground for purchase. He was still, unmoving as his vine-like penis moved with a will of its own. It writhed, it thrust into the mare beneath him, in such a way that it was mesmerizing to watch move in and out of the mare’s depths, slick with her arousal.

Floret could appreciate the show, the scene before her, it was arousing, not because of the participants involved, but the act itself held a certain allure. The idea of being in the mare’s place, the sensation of act, was certainly added to the effect of the visual stimulus before her.

A slight warmth that wasn’t there before, an awareness of the beginnings of arousal, and a desire of sorts, mild though it was, that could be explored further, if she wanted.

But that did not distract her from her job, an idea was merely an idea, and her own limit was keeping it as simply just that, an idea.

She turned her gaze over to the other mares to find them watching with tails flagging high and transfixed on the sex happening in the other room.

With the reveal of the deed itself going well, she resumed watching the live performance.

Rainbow groaned in frustration, tugging once more at her jumpsuit. “This thing makes it so hard to enjoy this!”

“You get used to it.” Pinkie replied, eyeing the way Rex moved to adjust himself inside his partner, the mare crying out and almost buckling as the prehensile dick changed pace, moving slower, but evidently deeper with the way she clenched around it.

The base of the tentacle rippled, one final thrust left only a small portion of it outside the mare as it buried itself within her. Several small bulges travelled up through the ovipositor and disappearing into her, each one squeezing its way in as she thrashed her head back, mouth open in ecstasy, and she left a spattering of her own juices on the floor and trailing down Rex’s crotch. Time crawled around them as the eggs made their way into their host, the motion hypnotic as it was erotic.

“How do they all fit?” Twilight asked.

“They start out fairly small,” Floret explained as Rex removed himself from his partner, the pony in question moving on wobbly legs to lie down in a patch of grass, folding her legs under her. “Once they’re fertilized, they’ll grow a bit, and the body pushes them out naturally. After these two are done, she’ll be taken to a room to rest up and lay the eggs in peace.”

Rex was on full display, his member was thicker than Herbert’s, the tip partly open and leaking a golden slimy fluid. As seconds passed, it shifted from almost languid movement, to curving slightly, stiffening and throbbing as the flower-like head twitched and released more of the golden lubricant.

The mare looked behind her to see the change. Her face was flushed red and sweat made her mane stick to her forehead, but she gave Rex a sultry look and raised her tail high.

“Round two everypony.” Applejack drawled.

“Round two is more inline with what you’d expect,” Floret confirmed as Rex padded over and mounted the mare, pushing in slowly. “Here the ovipositor stiffens and swells as a regular penis would, the flexibility for egg implanting no longer needed at this stage.”

He hilted her and began to move, slow, deep thrusts, careful movements, and the mare rolled her body in tandem.

The kirin turned away and waved a hoof to get the attention of the group. “We have more to see.”

“What, we can’t watch the whole thing?” Rainbow practically whined.

“They’ll be at it for about another hour or so,” she replied. “The second phase is more of a slow burn to allow the recipient and the eggs to adjust, and to prevent injury.”

Rarity was fanning herself with a hoof. “A whole hour of that…goodness.”

“You’re free to book a session with any of the Mossbeasts at a later date,” Floret reminded them. “Mossbeasts aren’t the only beings working here.”