Fluttershy struggled to open her eyes. Pain ached across her whole body, a throbbing headache most of all. Trying to shake the cobwebs out of her eyes, she pushed herself up onto her elbows and took in her surroundings.

Immediately, her pupils shrank in fear, and she wished she hadn’t looked.

All around her were the beaten and exhausted bodies of her friends. The throne room of Canterlot castle they were in had seen better days; the windows had been shattered, pillars had cracked, walls were indented and the thrones of the princesses demolished. The two princesses themselves were also unconscious, laying at the foot of the stairs that had once ascended to their thrones. As a few of her friends slowly began to stir, Fluttershy’s gaze zeroed in on the monster that had laid them low.

She stood tall at the top of the stairs, all eight feet of her muscular red body. Her coat shaded blood red for all of her naked body except her legs and hips, which were coated in coarse black fur. A whip-like tail with a spade tip swished slowly behind her, in much the same way a cat would when looking at a cornered mouse. Her raven hair billowed out wildly between her bat-like wings and behind her head, crowned with two curved horns. Golden eyes, those like a dragon, eyed her and her friends as a cruel smirk formed on those full lips. As she began to descend the stairs, her most prominent features bobbed and jiggled.

The demoness’ bust was huge, surpassing even Celestia’s F-cup mounds and more resembling H-cups. Each were tipped with a darkened nub that were skewered with a single golden bar piercing each. And preceding her swaying hips as she finally reached the bottom of the stairs was one of the largest horse cocks Fluttershy had ever seen. Well, given her lack of experience, the only one she’d ever seen, but she still imagined it was well above average. It was easily a few feet long and was as wide as Fluttershy’s arm. It proudly stood erect for the world to see, dribbling precum down past the orange-sized testicles to the floor.

“Ah,” the demoness sighed contentedly. “Oh, how I’ve missed the mortal realm. Don’t get me wrong, I could get off on all the chains and prison bars down in Tartarus, but nothing beats a realm full of ponies to plow.” With that said, her gaze fell back on the element bearers, a few of the others joining Fluttershy in consciousness. The meek Pegasus looked back at Twilight, battered and bruised like the rest of them, hoping she was coming up with a new plan to beat this monster. She had to have a plan, right? This demoness had swept them all aside so easily that she wasn’t sure anything would work against her.

“N-No you don’t…” Fluttershy turned back to see Discord, her friend, struggling to his mismatched feet. It spoke volumes of this monsters’ strength if even Discord, with all his power to alter reality on a whim, struggled to even compete with this monster. “You won’t touch my friends, Talvira… Especially not Fluttershy.”

The demoness, Talvira apparently, tilted her head for a moment. “Fluttershy?” Her gaze swept over the ponies again until they came to rest on the yellow Pegasus. Her eyes lit up like a toddler discovering their new toy and she strode towards them. Discord teleported into her path and summoned a thick fortress wall between them. He turned to offer Fluttershy a claw, but the growing glow from the wall drew his attention back to the threat. Within moments, the wall began disintegrating into glowing orange motes, Talvira strolling through like there never was an obstruction to begin with. Discord, desperately lunged at her, his claws growing razor sharp, but a simple backhanded blow from Talvira sent the serpentine avatar of chaos flying into one of the pillars holding up the throne room roof.

“Discord!” Fluttershy screamed, but before she could het to her feet, the monster now knelt before her, lifting her chin with one finger to meet the demoness’ gaze. Talvira looked over the mare slowly as her smile grew.

“So, you must be Fluttershy, huh? I have to say I’ve never seen Discord care about someone other than himself before. You must be very special.”

“G-Get away… from her!” Talvira’s expression soured as she and Fluttershy looked back to see Rainbow Dash, sporting a blackened eye and broken wing, somehow force herself back to her feet. Talvira stood up and waited patiently as the cyan Pegasus slowly shuffled up to the demoness before she grabbed Rainbow by the throat and lifted her off the floor with ease.

Talvira sighed annoyedly. “You know, you should’ve done the smart thing like the rest of your friends and stayed down. Now, you’ll die pointlessly.” With that, her grasp began tightening. Rainbow tried to break the grip currently crushing her throat and suffocating her, but she would’ve had an easier time moving the sun with her bare hands.

“Stop it!” Talvira paused and looked back down at Fluttershy, the yellow mare crying as she gripped onto the fur of the demoness’ leg. “P-Please… Let her go… Please.” Talvira simply stared at Fluttershy for a moment before that predatory smile returned. She dropped Rainbow Dash to the floor like a sack of potatoes, the cyan mare gulping down deep breaths as her hands reached for her still pained throat. The demoness then knelt before Fluttershy once more.

“You truly are pure, aren’t you?” She asked, reaching a hand out to Fluttershy. She flinched, but no pain came. Instead, she opened her eyes to see Talvira patting her head like she was a pet. “You know, I was expecting more of a fight when I came here, but it would seem none of you know how to put on a good show. But now I’ve thought of something even more entertaining, and it all depends on…” She then reached down and lightly tapped the mares’ nose with a finger. “You.”

“W-What?” Confusion reigned in Fluttershy’s mind. Equestria’s fate depended on her shoulders alone?

“I’m offering you a chance to stop me, Fluttershy, was it?” Talvira asked as she stood back up and strode towards the prone bodies of the princesses. “If I wanted to, I could kill you all right now. But where’s the fun in conquering this realm if there’s no challenge? So that’s what you have before you my dear; a challenge.”

Fluttershy cautiously rose to a sitting position. “W-What sort of challenge?”

Talvira turned back to face her and Fluttershy could see that smug grin growing bigger, revealing a set of pearly white fangs. “It couldn’t be simpler. I wish to test this over-abundant purity of yours, so my challenge is this; for the next week, I rule Equestria. During this week, I will try to tempt you, corrupt you until this purity so closely tied to your soul fades away, and you’re nothing more than a cum-guzzling slut begging to be impaled on my cock.” Fluttershy’s face reddened as she looked away, but Talvira grabbed her by the chin and forced their eyes to meet once more. “If you can endure my temptations, if you can resist throwing yourself at me, begging me to rut you like a two-bit whore, then I will leave this realm and restore all the damage I’ve wrought.”

“Y-You promise?”

“Of course, my dear,” Talvira stepped back, throwing her arms up theatrically before crossing a finger over her chest in an x. “When we demons make an oath, we are bound to them for all eternity. And to make the deal even sweeter, I swear on my darkened soul that I shall not lay a hand upon you throughout the entire affair…” That devilish grin then returned as her eyes prowled over Fluttershy’s body. “Unless you want me to, that is.”

“F-Fluttershy,” a haggard voice called out, and Fluttershy looked back to see Twilight reaching for her from her place on the floor. “D-Don’t listen to her. We’ll find… another way.” The rest of her friends were watching closely, each in equally bad shape. Despite her determined gaze, it was clear Applejack was out of commission given the clearly broken shin she was nursing. Rainbow Dash had only just managed to prop herself back up onto her elbows, though one hand still rubbed her now bruising throat. Pinkie and Rarity both sported bruises of their own, and Twilight wasn’t much better; a crack running halfway down her horn. Despite the determined look in the alicorn’s eye begging Fluttershy to believe Twilight had a path out of this already plotted out, the both knew their situation was dire. They had gone in to this fight at maximum strength, having even brought Discord along, and were wiped out with barely a struggle from the demoness. Now here she was, offering probably the only reprieve they would get from her. She just had to last a week.

Fluttershy turned back to face Talvira, just watching her expectantly with her arms crossed beneath her hefty breasts. “And you won’t hurt my friends?”

“You are cute, my dear,” Talvira grinned, “But you’re in no position to bargain. Either you agree to this arrangement or I carry on with my initial plan; killing your friends, rutting you until you beg for my cock each morning, and ruling my new perverted kingdom. And I’m beginning to grow impatient so I’d make a decision if I were you.” To emphasize her point, Talvira raised an open hand towards Discord, a purple light quickly growing as her chaotic friend lay seemingly out cold.

“Wait!” Fluttershy yelled, reaching an arm out. Talvira looked back at her, waiting for her answer. The timid mare knew she had no choice. This was the only way she could save her friends. “I’ll… I’ll do it.”

“Didn’t hear that, sweetie,” Talvira cruelly teased. “You’ll to speak up.”

“I’ll do it!” Fluttershy repeated louder, her filled with what little determination she could muster. “If it means my friends will live, I’ll face your challenge. I won’t let you win.” The grin returned to Talvira’s face once more. She lowered her arm, the ominous glow disappearing from her palm, as she crossed an x of white light upon her chest before offering Fluttershy a handshake. Slowly, Fluttershy took the larger red hand and, with a shake, the deal was done.

“Alright then,” Talvira stated contently. “With that out of the way...” Talvira spun back around and shot a beam of teal energy, connecting with the unconscious form of Discord. He slowly lifted off the ground before the light of the spell engulfed him and shrunk down to the size of a marble. Said marble then solidified and flew into Talvira’s waiting palm.

“Discord!” Fluttershy called out, anger flooding her system as she turned to the demoness. “I thought you said-”

“Discord isn’t dead, dear,” Talvira interrupted. “I’m merely keeping him in here, so he doesn’t undo our deal with a snap of his claws. As for you,” she went on, now turning and walking up to Fluttershy. The pegasus tried moving out of the way, but Talvira held her in place by the shoulders, meaning that when the demoness stopped right in-front of her, the demonic cock was jutting up against the underside of Fluttershy’s DD breasts, staining her sweater. “Pleasant dreams, Fluttershy.”

With that, Talvira closed the distance and forced Fluttershy into a deep kiss. Fluttershy managed to struggle out of it, only to then have her muzzle shoved into the demoness’ bountiful cleavage and held there. As she tried to get out, inadvertently motorboating the monster and drawing forth a slight moan, a sickly-sweet smell began filling her nose. This scent brought drowsiness, Fluttershy’s movements feeling more and more sluggish, until she could fight back, could barely hold her eyes open. Her arms dropped to her sides as unconsciousness began claiming her once more. With Talvira’s predatory grin the last thing Fluttershy could see before her vision went dark, only one thought managed to escape the coming shadows of sleep.

What have I done?

Author's Note

So, it begins. I'm a little nervous about how this story goes but hopefully this set up is decent enough.

For what happens next, that's now up to you. As stated in the blurb, this is an interactive story, where you can help shape what Fluttershy must endure during her challenge. Every couple of chapters I'll give you guys three options; a scenario for the day and night, as well as a possible item interaction, and these will affect how the story plays out.

Here's our first selection:
Day 1:
Rarity
Applejack and Rainbow Dash
Pinkie Pie

Night 1:
Starlight and Trixie
Chrysalis
Luna

Items:
Nipple Tassels
Silk Sleeves
Bell Collar
None of the above

I hope you've enjoyed this opening and we'll see what happens in the next chapter.