The Band of Loyalty

King and Sir stood at the bottom of the stairs leading up to Canterlot Castle. The only thing stopping them from conquering the whole of Equestria was right in front of them. One hurdle remained, and they were well-prepared for it.

"Are you ready?" asked King, turning to Sir. "We're probably in the clear, but now would be our last chance to bow out."

"I'm not giving up," replied Sir, steeling himself. "We should be ready, especially with them by our sides." He turned and looked at Twilight and Cadance, standing off to the side. "I don't think we can fail."

King nodded at the ladies, who chuckled coquettishly. "Good. Because we can't afford to." Those words echoed in his head as he climbed the steps. This had to be successful if they were to stay in Equestria. There was no room for error.

Seeing the two princesses accompanying them, the guards let the incubi though with little more than an inquisitive look. Of course, all the ponies of Equestria were welcome to come to royal court, though there was often a wait to have your complaints heard, and even then, it was unlikely that you'd go before the princesses. However, if you had two princesses at your back, that was more likely to yield results.

They made their way to the throne room and with a command from Twilight, all of the guards left the room. The doors and windows were shut, and Cadance sound-proofed the chamber.

"What's happening?" asked Celestia, standing up from her throne. "What are you doing?"

"We've discovered a being with a vast amount of power that threatens to take over all of Equestria," answered Twilight. "They've been working undercover for the last few months, and were recently sighted in the Crystal Empire."

"Then let us go to the Crystal Empire and stop them," answered Luna. "If we hurry, we can identify them and perha--"

"That won't do you any good," interrupted Cadance, shaking her head. "I received information this morning that suggests that they left the Crystal Empire in the direction of Canterlot. I think it's possible that the threat is already here."

Luna and Celestia exchanged worried glances. "Cadance, since you're the premier among the four of us when it comes to abjuring, I trust that you'll put up a force field to keep it out if it's not here yet, and in if it's already arrived," instructed Celestia.

"Twilight, I want all of your skill in divination to determine what it is," added Luna. "We need to know exactly what it is we're dealing with."

"Oh, I already know," replied Twilight. "And Cadance has already locked it in the city."

"Really?" asked Celestia. "What is it, then?"

"A pair of incubi," answered Cadance.

"And why haven't you disposed of it yet?" asked Luna. "Such creatures are exceptionally dangerous, especially inside of cities."

"We know," answered King. "Wouldn't it be a real shame if they had already laid claim to two of Equestria's princesses and were about to claim two more?"

Celestia scowled as she realized why Rainbow and Scootaloo were there. "You are both fools for revealing yourselves." Flying into the air, her horn glowed, and she let out a beam of pure magical energy, only to have it blocked.

Cadance chuckled. "My King has a master abjurer at his side. Did you really think you stood a chance?"

Celestia flew around them, firing beam after beam at the demons, to no avail. All the while, Cadance just giggled at the fruitless endeavor. Eventually, Celestia stopped and landed. "You're a coward, hiding behind a mare that you've enslaved."

"And you're a fool," taunted King. "For having the threat right under your nose and doing nothing about it."

"I was unaware of your presence."

"Not just a fool, but an ignorant fool."

"You're the ignorant fool," said Luna, grabbing King from behind and pressing her hidden blade to his throat. It was solid argentum, and King could feel his skin burning at its touch. "You will submit yourself, or this blade will separate you from Rainbow Dash's body."

King chuckled. "You'd kill her?"

"Rainbow would give her life to protect Equestria. If you'd spent any time talking to her over the past two months, you'd have known that."

Suddenly, Luna felt her dress being torn off, and a firm hand cupped each of her breasts. "That may very well be the case, but Scootaloo's ideals are very different."

Luna twisted around and swung the knife at Sir, but King followed, grabbing her by the wrist. "Let go of me!" she shouted, kicking and battering him with her wings. As her horn began to glow, she suddenly felt a lot of her magic being sucked away.

"None of that," growled Twilight. "Behave yourself, Luna!"

Celestia rushed forward and pounded her fist against the force field Cadance was still holding up. "Not another move!"

King and Sir weren't listening, as they'd pinned Luna to the floor and whipped out their cocks. "Shall we race to see who has her first?" smiled King.

"Ooh, let's do," chuckled Sir in response. "I call her mouth!"

Luna opened her mouth to protest again, but it was quickly stuffed with incubus dick. She couldn't push herself up, the two of them together were stronger than she was. She couldn't use magic, either; Twilight had sealed it away. She began to panic as she remembered her last stint on the moon. Certainly, that would be far superior to what was about to happen to her.

"I like arses, myself," replied King, ripping off her underwear. Luna grunted in discomfort as he pushed his way in, with only a gob of spit for lubrication. As the sound of Twilight's voice counting down, they both began to pump into her at a rapid rate. With every thrust, a little more of her hope was dashed and replaced with dread. Was this to be the rest of her life? To serve as a pleasure slave to two demons?

Soon, she was in tears, and all she could do was to look up at her sister, pleading for her to find some way to save her. Her only comfort was the screaming Celestia was doing as she desperately tried to push her way through the barrier. Her relief came not from her sister's agony, but rather the thought that she would not stop trying until the end. It perhaps wasn't the best thought to leave have as your free will was sucked away, but those were her last free thoughts.

Sir pulled his cum covered cock from Luna's lips, and she licked it clean. King, rather miffed that he'd lost, turned to Celestia. "Guess who's next?"