The field was lovely. His company lovelier. Celestia showed off her fully nude human body, and Cameron was well to acknowledge it. He laid her down on the grass, and lifted her legs. His shaft was hard and thrusted into the deepest parts of her. She cried out in pleasure. Her vaginal walls held tightly, not wanting him to pull out, but his shaft was wanting it too much. Her face was down and her ass up, and her sexual partner was pounding into her with all of his might. A wave of warmth washed over them as he came into her. A smile rolling across her face, "Thanks...I've been needing that."

"Cameron?" He opened his eyes from the dream. Celestia, still fully a pony, looked back at him, "You hungry? I was thinking about what to make for breakfast, do you want anything?"

"Nah... I'm okay." He then reached out and caressed her face with his hand, and then took a good long look at it, "I had some time to think..."

"Oh Certainly!" She started moving around the room in a short canter, almost like an anxious horse at the start of dressage, "You know, you don't need to accept the proposal. I just-"

"Oh, I'm okay." He interrupts, "I think it'd be interesting. I was just wondering if it's temporary."

Celestia nodded, "It's like installing a light switch, and any one of the princesses can tap into it."

"Okay...will it hurt?"

"Should be safe..." he gives her a skeptical look, "Well, we haven't done something like this in at least 4 or 5 centuries."

Cameron was now up and looking for his clothes before realizing his shirt was in the sink, "Well...I guess we should just do this then and get it over with."

Before he realized it. He had a magic field around him and it nipped and pulled at every inch of his skin. She had shut her eyes at the pain, and he also did the same. A flash of light and it was done. Cameron fell to the floor, wobbling to get up. He then realized he was up. He shuffled about, his new legs were weird to him and he couldn't help but notice he couldn't curl fingers he didn't have.

Celestia opened her eyes and saw a Blue and Green pony with no cutie mark then he fanned his wings, "Oh..." He looked at himself, lightly fumbling his feet as he tried to look behind himself. She got up and looked at him, "Odd...I thought you would be taller."

"Why do you say that?"

She held back the comment, "E-Either way, what do you want to do first as a pony?"

--IV--

Cameron used his front legs to hold on tightly as he humped quickly into her. His pony shaft now fit comfortably inside of her pussy due to its shape. Celestia moaned as his median ring rubbed her g-spot roughly. Using his fit, stallion body, he reared up and then slammed in harder as he pulled back on her autonomously wavy mane. She moaned louder as she did so, feeling his balls slap against her underside. He grunted a few times, went in deep, and then came inside. The elegant princess moaned less than regal as she came around his shaft. Cameron collapsed on top of her and started nuzzling her.

They then hear gigging, and look over into the corner of the room. Cadence was using an eggplant to pleasure herself as she watched, "You two are SO cute I couldn't help but enjoy the show~"

He blushes, and starts to pull out, "How long have you-"

Cadence interrupted him by moaning as she came around the eggplant. She giggled and pulled it fully out, "I liked the part in which she noticed your penis tasted different as a pony!"

Celestia picked her up in her magic, "Leave."

Cadence sputters, "But...But...I WANT A TASTE!" Celestia slams the door on her, leaving them alone again.

Cameron looked over everything, "So... what now?"

She sighed and thought, "Well, Twilight might want to check to see if anything went wrong, and probably to critique the magic I used." Cameron looked at himself, "So I just walk there...naked..."

"Ponies don't normally wear clothes." Cameron realized that he'd now be at eye level with most ponies’ crotches, "That might be a bit difficult for me..."

She used her magic to poof a set of guard armor onto him, "That should help." He looked down and saw that it reached down and covered his crotch, as if it didn't exist, "It has a magical storage for your private parts."

"So, I can have a massive boner and not have it show?"

Celestia blushed, "Um...Y-Yeah...I never realized that my guards could be...well!"

Cameron started walking out, "Well, I'll be going to Twilight now. I guess I'll let you think about that." Celestia shook her head, trying to avoid the thought of the guards that walk behind her getting hard from seeing her.

--IV--

Cameron walked around the castle, trying to find Twilight's research lab she had set up there. "Are you new?”

He looked up and saw Shining Armor there, "Oh, hi. I'm just looking for Twilight's lab."

He blinks, "I think she's in the library."

"Oh..."

They both stand around awkwardly for a few seconds before Shining Armor asked, "Do I know you from-"

"I'm Cameron...the Human from the other day."

The other stallion smiled, "OHH!" He chuckled, "Spell?"

"Yeah..." There was another bit of silence, "Well, Celestia wants me to talk to Twilight for a bit so…"

"Then stop on by the Guard Barracks later. We never got to talk last time."

Cameron started moving away, "Yeah. Sure." He turned and started moving down the hall to the Library. Every once in a while, a guard would look at him and wave. Cameron felt odd about all the attention he was getting.

--IV--

Twilight had three books floating around her as she did multiple research projects at once. She swirled vials and added different spells into it as she did. Spike laid on a nearby couch, reading a book to himself. Cameron just watched for a bit and then made a noise to make himself known, "Um...Hello Twilight."

"Oh, hello Cameron. I'm kind of busy with something right now." She then looked up and saw the Blue pony in Silver armor waving at her, "Guard, where did the human go?"

"Hey, Celestia wanted me to make sure the spell worked."

Within an instant she put everything down and threw Spike out of his chair to force Cameron into it, "One second..." She then used her magic to rip the armor off. Cameron's shaft was still a bit hard, being exposed out of his new sheath. She coos at it, "Big boy, ain'tcha?"

"How can yo- AHHH!" He feels something cold press against his taint he looks down at a magically created claw just rub against the sensitive ridge, "What are you doing?"

"Making sure you're functioning correctly." She observes his shaft grown to full length, "Just as I thought. Celestia added a few inches to you." She smiled, "You had a bit of fun before showing up here."

He blushes, "I-"

She then starts using a second magic claw to stroke his shaft, "You might be useful. I'm testing various viscosities of several species of both Ponies and non-ponies ejaculate to see if there is a correlation between species and the likelihood of zygotes forming."

Cameron blinked as he heard all of that. She then sped up the stroke, "I want to test how Stacked you are." "Okay..." he looks at all the samples, "How many-" "13 Earth Stallions, 22 Pegasi Stallions, 16 Unicorn Stallions, 4 Gryphons, a Hippogriff, 3 dragons and a Sea Pony."

He smiled through the pleasure, "Did you treat them all to dinner first?"

She tilts her head, "Why? The food wouldn't add anything to the amount of ejaculate they produce."

"Actually, some foods do...but only in late quantities.

She stopped, "Really?"

"I think so. I think eggs and other-"

Twilight takes all the vials and crushes them into a glass ball, throwing them out of the window and into the nearby trash bin, "DAMN IT!" Cameron squeals as his shaft was crushed under her claw, "Oh...sorry..."

"It's okay...it only hurt a lot..."

She takes in a pained breath before kissing the head. Spike made a gagging noise, "I'm going to the room...I don't want to see another second of a Stallion's dick." He got up and left the room.

As soon as the door shut, Twilight laid him on the floor without being gentle about it. She smiled at him. Cameron was a bit worried, "What are you-"

"Making it up to you..." she rubs her crotch against the tip of his shaft before using her magic to bring the lube over, "One second...don't want friction burns, now do we~"

He gulped as she spread the cold substance over his shaft and then used her magical claws to spread herself open before putting the shaft up to the median ring inside of her, "Ooh~"

Cameron placed his newly acquired hooves right on her hips, trying to bounce her on his shaft, but she used magic to push his hooves to the floor, "Sorry, but I'm calling the shots here~"

She then pulls nearly all the way out and then slams back down. Just as he was grunting due to the sudden hip move, but she was already pulling back all the way and slamming again, "Ahh~"

Twilight smiled and started to speed up, "You like that, don't you~" her stallion test subject nodded as he started thrusting up to meet her hips, "Good, because I need this just as much as you do."

Cameron reached up, grabbed her hips and thrust all the way up. For a second, she paused to take a breath, but he just started thrusting up into her. After a few thrusts, he started moving so her back was on the ground, "I find this way really fun." He grabbed one of her legs and literally fucked her sideways. She was moaning heavily and was holding onto the chair with her forehooves to not slide along the ground as much.

She whispered softly, "Cum all over me." As Cameron slipped his flared shaft out or her orgasming marehood, rubbing it with a hoof awkwardly, and then spurts of white fluid pelted her face. Twilight was panting and giggling to herself as she wiped the Stallion's jizz off of her face, "Well...that was rather intense."

Cameron nodded, "Yeah, I guess that was." He then felt something rumbling in the pit of his stomach, "Huh...I didn't think I was hungry."

Twilight cautiously used her magic to scan him, "You're not..."

Now he was confused, "Okay...then what is it?" She grabbed a ball something from the other room, putting it in his mouth before he could see what it was. It tasted like White Chocolate but had the texture of wax, "Eww...what is this thing?"

"Energy supplements that refill your magical attributes. They use them for athletes, but they pass them out to all the stallions who...overdo it with mating."

He swallowed the disgusting ball and raised his eyebrow at her, "What does it do?"

"Well, your body is mostly magical currently, so It's to replenish the magic lost." Twilight went right back to her experiments, only lightly cleaning off with a nearby towel, "After reaching an orgasm, your body expels a hint of magic out with each droplet of semen. So, after a few times it wears you out...which is why flying and sex never work well together. We have at least a few injuries a year because a stallion wanted to inject his marefriend with his seed before they even get to his house." Twilight started stroking his dick with the manifested claws, "Now...we need a sample after you've eaten..." she empties the contents of the towel into a large dish.

--IV--

Twilight slid two full test tubes into the rack, labeling them and smiling, "Now to get a bunch more stallions to test on, before and after the effects on the Supplements." Combo was slipping back into the guard armor, "Well...Since I'm a pony, I should explore the festival." Twilight smiled, "I might as well go with you. I should find Spike again...maybe something to drink. My throat's dry from all the stallions that I used earlier."

He nodded in agreement. That made Cameron think, though, "Oh...I forgot to ask Celestia. If mating was so important, what happens with Stallions who are..." he looked for the right phrase, "Attracted to their own gen-"

Twilight covered his face with her towel, whispering, "I wouldn't do that if I were you..."

"Why?" He whispered, "What's wrong about liking guys."

She gave him a nervous pause, looking around, "Are...are you?"

He stared blankly at Twilight, looking a bit worried, "What happens if I a-" she covered his mouth again. She looked around and after a bit of that she uncovered his mouth, "What's wrong?"

"You should probably avoid Cadence like the plague." He whispered tone was disconcerting.

"Okay... I will keep that in mind, I guess."

"Now come. I want to show you some of the sights today. It's mating season, and even chronic nerds need to get out there and have some fun!" He headed out with Twilight's lead, out to explore the festival, unaware of a slender figure that was following them from a distance. _?qOR

Author's Note

This Chapter was extremely late due to both my own laziness and I combination of stress and family problems. I want to thank my friends and editors for helping me get this out, and my new computer for making it easier to edit, since I'm not just using my old phone to write/edit/upload everything.