*** Outside Octavia and Vinyl's House ***

It was a real workout after leaving Octavia and Vinyl's house. Then, he realized that it has been a while since he stayed at Twilight's castle, so, he would have to try and go back there. He figured that she knew what his species type is recognized as. Little did he knew that Estrus Season was indeed right around the corner, and much to Nursery's credit, any mare would stop at nothing to gets their hands on him.

*** Twilight's Castle ***

As soon as Darren stepped inside, he called out to Twilight, wondered if she is ok. Twilight called back, saying that she was ok and found the answer to his question before telling her to meet at the library. Having heard the news, he rushed there, awaiting the answer from her.

Then after looking through the pages not one minute too soon, she told him come down because she has seemed to figure out his 'special conditions.' Twilight mentioned that he is indeed a stallion, and, on the TMI side, he happened to be part of a special few that are 'more' than well endowed, regardless of their sexual experience. Like some of the stallions, he was considered one of a kind among the rest of the recent stallion population, or lack thereof. Aside of that, they can be even perfect when it comes to either sex in general or bearing foals. With much of what a stallion packs down there, he could get a mare absolutely pregnant, even when she uses the strongest protection, unlike some special ponies.

"Are you sure there's nothing wrong with my being a resident of Ponyville despite my..." Darren had to ask.

Twilight, sensing panic, trying to calm him down, for she had no worry over such a topic. "You see, some stallions could have sex like crazy, and mares can become pregnant unless they're otherwise protected. As for alicorns, like Princess Celestia, Luna, and myself, are sterile. Nothing could gets us pregnant."

"Wow." Darren uttered in surprise, blushing red. "And so alicorns are..."

"An orgasm short from satisfaction. Not even a random sex toy could do the trick of tricking us into a climax." Twilight stated, not realizing that Darren's face was red. "Oh. Sorry. Too much to handle, huh?"

"It's fine." he calmed himself down. The awkwardness traveled around them both. Twilight broke the silence finally, reading through her guide before turning to Darren.

"Anywho, according to one of the updated equine anatomy guides, you're physical form is indeed unlike any of our kind, but since you're considered a resident of Equestria, there is absolutely one little thing we might have to check, just to be sure." she looked down on his pants in thought.

"And what's that?" he asked. Suddenly, Twilight glowed her horn, and the lavender aura surrounded his pants.

"Wait! What are you doing?" Darren tried to stop her, but it was no use.

"I have to know your full species status from top to bottom, even if I have to strip down to your..." Just as Twilight pulled his pants down, she gasped, taking sight of his outstandingly endowed member with a tempting lick of her lips.

"Sweet Celestia..." Twilight's mouth opened at his size, but then felt a little tingle inside her body. Darren saw it all and asked if she was okay, but she didn't say much except groan. She was getting a little horny, much to his dismay. Little did he know that at this moment, Estrus season had begun, and he was about to witness a mare in heat.

"Okay, that's enough. I can get my pants back on now?" Darren tried to react quickly, putting his pants back on. As a result, Twilight's sanity returned, and she apologized before turning back to her reading. He started heading for the guest room and laid himself to the bed face down, his head half-full of guilt planting to the pillow before deciding to sleep. He was this close to saying good bye to his normal life. As for Twilight, she knew she shouldn't have done that, but losing a friend he just met wouldn't stop her from having a little something to stick between her legs just to calm her heat down.

"I'm sorry, Darren, but I can't help it. I... I... I have to... have ... Please... Give it..." Twilight fidgeted, feeling the heat in her body send her to cause an impatient risk before having to turn her into a lust hungry animal in her mind. She was still normal on the outside, but on the inside, she screamed "sex" in lieu of every mental sentence. The stroke of Estrus Season triggered not only her, but almost every mare in Ponyville into the same thing, hunting for stallions.

*** Nighttime - Estrus Season has begun... ***

Estrus Season has pretty much begun, and Darren continued to sleep his guilt away, but it was too late to even move at that point. Twilight's aura prevented him from doing so and stood him up straight so that he couldn't move his arms.

"Don't...you...dare..." she growled in light anger, with her aura surrounding him. Twilight got a little closer to his early erect prick and placed a hoof on it before watching it grow until it almost touched her snout. As a result, After she abruptly smelled it, she couldn't stand waiting any longer. She had to do something about it; Her body continued to burn with anticipation. She pounced on him and kissed him aimlessly, with her hooves above his shoulders. His eyes widened at the sudden movement, but he gave in to her kiss, wrapping his arms around her. They let go for a while to catch their breath, then locked lips again, only deeper. Darren had never thought a princess could do such a thing to him, even though they first met. Of course, it was just too soon for him.

"W-Wait... we-we shouldn't... do this..." Darren tried to break free from Twilight's urges.

"Please, Darren." Twilight surrounded him with magic, keeping him still. "I really need this. I'm in heat right now, and I can't let you stop me from relieving it."

Twilight stopped the kissing and went down to his member, slowly licking the tip. Chills ran through Darren's body as she put her warming mouth on the tip, sucking it carefully. She then went down an inch of his shaft, taking small steps in sucking until she was halfway across his shaft. She continued playing around with it in her mouth, making cute humming sounds as she does it. Suddenly, she stopped and pulled it out of her mouth before pushing him to a nearby couch with her magic. After he sat down, she quickly climbed onto his lap. Her instincts rose highly as she gave him her satisfaction was waiting to be met with his member. However, Twilight met eyes with Darren with a look of horniness over confidence.

"I... I want you... to... taste me." She turned around, lifting up her tail to present her glistening entrances to him. Darren was blushing red by the pound, but didn't hesitate to do what he was told. While Twilight continued to suck his member again, he gave her marehood a nice long lick, making her tongue work her way from clit to inside. She let out a soft moan, which didn't stop her from sucking him inch by inch. The pleasure they received was too much for them, but they couldn't get enough; they had to have each other. Twilight stopped herself and turned around to face him again, with pleading eyes and another long kiss to the lips.

"I want it... right inside... Please...." Twilight couldn't take the waiting any longer. She aimed his member right inside of her marehood and slowly took half of his length before setting a slow pace. After they sighed with delight, Darren felt her marehood tightening around the shaft as she moved up and down. Miniature jolts of ran through his body, then to Twilight as they were on their way to paradise.

"I can't believe I'm doing this..." Darren exclaimed in thought. He couldn't even believe that he was indeed having sex with a mare she knew for some time, and a princess, no less. Twilight, not even saying a word, continued to bounce on him, with his member penetrating her marehood with all its might. The sensation of it drove her insane, and it was unlike anything she had ever studied from some books. Darren's member touched her walls, and was just about to break her womb as her fluids coated the shaft. Darren stopped her from bouncing and decided to hold her as he thrusted upwards, drilling his hard member upside her marehood with vigor. Twilight's moaning increased, and her eyes abruptly glowed white as he was thrusting.

"Twilight, I'm... I'm gonna...!" Darren alerted her.

"Cum inside! Cum... Inside me!" Twilight shouted each time she bounced until she stopped in an orgasm. They both roared in bliss and held each other tighter, burying themselves in the embrace of one another's. Extra amounts of his seed came out, right into her and coming nearly close her womb. She was unaware that his seed has already broke her barrier, but she was satisfied regardless. Satisfied, she laid her head on his chest and closed her eyes, humming on his fur.

*** A Few Hours Later ***

The bright sun rose, with its rays piercing through the windows of Twilight's bedroom and touching Darren. He slowly woke up, a hard yawn released from his mouth. As soon as he wiped his eyes, he looked around, seeing no Twilight anywhere in the room.

"Sweet Celestia!" Twilight shouted in excitement from a distance. Darren heard her and called, asking where she is.

"I'm in the bathroom!" Twilight answered. Darren made his way there, seeing Twilight with a pregnancy test. She was in shock as soon as she saw the result. Much to her dismay, it showed a plus sign.

"Yes yes yes yes yes yes yes yes yes yes yes... Yes!!!!" Twilight screamed in thought.

"Whoa! What happened?" Darren asked, wondering what the commotion is all about. It was then she tackled him with happiness around her face. Darren felt the impact, but was luckily to not bruise easily after last night.

Twilight apologized, got off of him, and picked him back up with a smile. "No alicorn was sterile, not eager to bear a foal, but your endowment's length managed to obtain strength while reaching for my cervix, and thus you've managed to break my barrier inside me!"

"What?!" Darren was dumbfounded at the words she said, but Twilight had to shorten the meaning.

"In other words, after you've came inside me, thus I'M PREGNANT!!" Twilight screamed in joy. Darren, on the other hand, wasn't moved, much less surprised.

*** Outside of Twilight's house ***

"How?" He asked himself as he walked out of the castle, having no idea what happened. There was no way he could have made Twilight pregnant, but he knew something rash was about happen anytime soon. He kept cursing himself for having to resist to her. The suspense ran through his mind, giving him negative results and reactions. Feeling that life was gonna be over for him, he figured that maybe another drink back at the tavern would calm his nerves. But, this would be considered a bad idea since he was as of this point a sitting duck unless he starts making a run for it.

Author's Note

That was just one of the royals you requested. But this will be continued, guaranteed.

Vote for which royal to be next in the comments:

Celestia
Luna
Cadence

(If you have any special requests regarding this set of chapters, feel free to PM me.)

Voting ends by next Tuesday.

Thank you and enjoy!!