Full Tack & Bit

Story by porsche454 on SoFurry

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Hello everyone!

Long time no upload! Let alone upload of a story written by me! Life has happened and I've been working my tail off. Now, I've finally been able to feel confident enough to share some characters I've been working and putting together. This shall be the first story delving into the Universe that I have come up with. Expect to see some old characters and new characters coming up and being reintroduced!

Evelyn is one of my favorite characters and I hope you enjoy her as much as I do.

Leave a comment below if you want, and please stay respectful.

Find me at the following: Twitter | Furaffinity | SoFurry | Weasyl | FurryNetwork


Evelyn set the vial aside, brushing her hands along the counter as she rolled her shoulders forward and settled her hips back, stretching out her shoulder. Big breath in. Big breath out. Just relax...it's only temporary, you've changed yourself before....this is just...a little more...intimate. Emerald eyes led her head up as she focused on the simple printed label. Equus coles mutare. A special concoction from Roy, something she'd been interested in exploring when they began this experimentation series. It took some trial and error, but after enduring a myriad of other serums, she and the reclusive doctor had catalogued various species; their potencies adjusted and refined.

She pivoted on her hooves, straightening her back, probably best to go over the technical notes left for her. With tablet in hand, Evelyn proceeded to lounge on her suite's couch, fingerprint recognized and unlocking the device. The genetic editor Roy developed was dependent on its targeting, but that required a lengthy programming and the fully expanded genome of the user. The longevity of the changes, plus the area of effect, are correlated to the dosage administered. Those details were discovered to be very critical, or else one could end up with a set of legs fit for a working horse, literally. "Hope it's alright for me to critique your work, Roy...I'm sure your math is fine, just doing a sanity check..." She murmured to herself, draping one equine leg over the other.

Major alterations were made to the now standardized formulation, and the unknown additions were higher than previous experiments. It was the first attempt at these types of changes, and the lengthy calculations assured a similar change trend as the previous serums, even with extensive dilution. A quick check on the resultant ratio gave Evelyn some assurance in the dosage, thankful that Roy was still remaining cautious. Her cheek tucked a smile as she resumed her review.

Wrapping up her review, she submitted her comments and notes to Roy's internal database, validating the accuracy of his work along with her points to the best of her ability. "Alright Roy..." Evelyn stood up, strolling to where she'd left the vial, rolling it between her fingertips as she straightened out her suit. Tender digits slid down her abdomen, the targeted injection port positioned just above her loin, supporting her hand around it, pausing. "Guh, nearly forgot video...." She shook her head, doing a small pace around the living room of her suite, extending her arms above her head as she released a huff. "Synthai, do you have eyes on me?"

Affirmative. Returned the AI.

"Please capture video. Save under: root folder 'Research Recordings'. Create new folder, titled: 'Gender Studies', please."

Folder created, cameras ready. Filename?

Ev rotated the vial to see the nameplate, reciting the latin with rehearsed ease. "Equus coles mutare."

Recording begun. There was a soft chime announcing the start of the recording. Will this be a long experiment like the last one?

"With the prescribed dosage and targeted region, we'll have a nice and steady afternoon transformation like before." Evelyn continued where she left off, singling out the port with her free hand.

Oh, it'll be similar to the varanus mutare?

"Yeah, similar in timing, but completely different beast." She pressed the vial and port together, giving it a twist, releasing her held breath. The bayonet latch clicked as it locked into place, dispensing its contents to the designated target area. She inhaled, breaking the vial off to inspect the view glass on the bottom, verifying it was emptied. "Take note: the full contents of the vial have been administered, confirmed visually though should be confirmed by mass."

Note recorded.

Warmth blossomed at the base of her pelvis, her cheeks flushing as she released a shaky breath, straightening herself up. "H-heh, that feels like when I did that serpentes serum that one time, but just.....different."

A bath eased that change, do you wish for one?

"Oh, yes! That would be great Synthai. I'll get myself a snack to eat while I so-" Evelyn keeled over, gasping for air as she gripped her lower abdomen. "F-f-f-Fuck." She panted, her abdominal muscles rippling under her hand as she tried straightening herself.

Shall I call for assistance?

"YeeEESSSS." Evelyn keened as her footing wavered. It was becoming harder to focus as she felt her pelvic floor getting clawed and torn up, her lower abdomen tightening as her knees buckled and locked, but she still stood. Her flesh slithered along the crotch of her suit, rattling her spine with electricity as the surging mass of flesh slammed out the front of her pelvis. It kept going, eyes widening and teeth gritting, baffled as she saw the unfamiliar bump on her mound.

Roy has been notified and is inbound.

"He'snotgoingtogethereintime." She seethed through clenched teeth as her breathing heightened, her glutes creasing tight as her hips shifted forward involuntarily. The mass protruding from her pelvis began to surge, a distinct shaft began to stretch and pull Evelyn's suit away from her skin. A flustered huff hissed from her as she forced her hips back, the surge subsiding at the moment, taking in a hesitant inhale. She slowly released her breath as hands moved to her hips as she relaxed, regaining her faculties as she slowly swayed left to right. Tension across the forming mass was relaxing, feeling her suit begin to adjust and reform, accepting the change in volume that it was enduring.

"Hah, okay....that was....interesting...." She leaned forward with another exhale, trying to stretch the impacted muscle groups, leaning back with an inhale. Her loin muscles were beyond sore, each movement caused micro fidgets as she continued to try and stretch out the soreness, glad it was finally over. Notes, she needed to take notes. Eyes braved to glance down and fully absorb what they had accomplished. , it was there, they'd done it. "SynthAI, make note that the changes sto-"

Her flanks clenched, stomach dropped, descending deeper as she felt a weight expand between her thighs, back snapping straight as she felt her pelvis thrust forward. Teeth suppressed a scream as the new mass surged forward taking the thinning fabric with it, feeling it wrap and stick to the forming shaft. Hands involuntarily flung out, left hand braced her abdomen as the right caught the surging mass. It sent tingles down to the hilt, eyes rolling back as her knees buckled, hooves sliding out from under her as she was reminded about the tile flooring of her suite. Her hand bounced on the flared tip of her new member, eliciting a pained moan as Evelyn's brain took inventory of the new appendage.

Evelyn's chest undulated as she tried to keep herself calm, snatching her hand away from the meaty shaft that towered just below breast height. Condensation steamed and crept across the tile from her balmy scrotum, quenching away the budding arousal her hand had unknowingly began. Still hesitant to move, she just watched, taking her breaths strategically, bracing herself for any further surprise changes. Both hands flattened onto the floor beside her, focusing on the shaft as she mentally attempted to make it flaccid. Evelyn noticed an oddity with the member, the scrap of torn suit having blackened and webbed around the girthy member. But she chalked it up as an issue for later. The otherwise mottled umber and salmon member began to fall to one side as it slowly began to retract slowly into the dark brown leathery sheath that had taken residency upon her previously empty pelvis.

"Ev?" Roy rested his hand on her shoulder, returning Evelyn to this plane of existence.

"Hmm, huh?" She slumped into her seated spot on the floor, feeling the warmth returning to her newly populated groin area. She rubbed her temples and looked up at Roy. "Something is off with the formula, Roy, you were shooting for a two hour change, I verified your calculations and....and it was nowhere near that." She tamed her tone, but there was bitterness with how the events unfurled.

There was silent acceptance, Roy kneeled beside Evelyn to give her a hand getting back up on her hooves. "Apologies. I will work harder not to let that happen again." He braced and shifted back as Evelyn pulled on him, getting up with a groaning effort.

"I feel like something was gnawing on everything...here." Her hands gestured all around her groin and inner thighs. Running her hand down as she exhaled, tensing her pelvic floor muscles to try and get them to relax."And then the suit melded a bit to it, and now it's just-"

"Interesting, and it kept the change localized up until then?." Roy commented, breaking that train of thought.

"Yeah....it...it was doing that."

"But it too failed."

"It held...and...we'll get to analyze the melding later."

"Mmm."

Evelyn saw those steel blue eyes affixed to the wall across the living room, his thumb rubbed the tips of his index and middle finger. It brought peace of mind, knowing that her comments impacted him, and it drove him to improve. "Roy, I'm going to take a shower." She brushed off her thighs, feeling how her micromovements caused her hefty sack to sway with ease. Noticing that Roy's fingers were still churning, clearing her throat. " Roy."

"Mmm, yes, right. Take your shower, I'll be...do you need anything from me?" He rolled his shoulders and returned his gaze to Evelyn before turning his head.

"Some food and water would be nice, I have a bit of a headache." She exhaled lightly.

"Would you want to do the examination afterwards? Or..."

"If you bring me a good charcuterie plate, I'll think about it, hm?" Giving a small smirk as she waved him off.

"Deal?"

"Deal." He nodded, turning his head to the door as the rest of his body followed, whisking himself away to retrieve Evelyn's request.