The Sins of Harmony

Twilight opened her eyes. She took a deep breath, smiling as she found herself in the Ponyville library. She glanced around, feeling content of being in a familiar place. The library seemed unharmed, but also dark. The sun was only starting to rise, so the room was not lit up properly. Twilight sighed in relief, knowing that this meant Spike was still asleep. So no funny business with her number one assistant. Or at least she thought and hoped so. While she was looking through her books for what could be useful, like another train manual, she heard a strange rumbling upstairs. The princess flattened her ears and sighed, slipping her saddlebags off, but lifting the elements out of it for if she needs it. She slowly trotted upstairs, the rumbling getting louder. She could hear voices now, but it caused the alicorn to frown.

“Oh, Spikey!” A voice yelled from Twilight’s bedroom. Twilight winced, knowing what to expect as she slowly opened the door. She peeked through, a deep blush already on her cheeks as she saw what was happening. She dropped the box containing the elements on the floor in surprise.

“Oh, you’ve got to be...” She muttered. She gulped at the sight before her. Rarity was lying in her bed, with the bedsheet over her. The sheet contained a large bump, from which Twilight could only assume that it was Spike. The white unicorn was squirming and moaning softly, but what really caught Twilight’s eye was the green aura around Rarity, paired with her eyes being of that suspicious green colour. But Twilight found her staring for a bit too long. not only had her wings become uncontrollably stiff, Rarity had sat up to gaze at Twilight.

“Oh, Twilight! It’s good to see you’re already back. And just in time! Spike is offering some great lip service.” She giggled. She shoved over on the bed to make space for Twilight, patting the empty space on the bed. “Come here and join in, Twilight.” She offered. Twilight was about to say something, but Spike suddenly jumped up from the bed, holding a hand on his stomach. The same green aura was around him too. But the dragon suddenly burped loudly, a torrent of green flames spewing out of his mouth together with a letter.

Ignoring Spike’s reasonable sized unmentionables that were pointing at her, Twilight took the letter and unscrolled it, reading it carefully.

“Dear Twilight,

I have found out how to disable the curse pony per pony. In order to do this, the victim needs to engage in climax. The climax weakens the curse to the point it does not affect the victim for a few brief seconds. This is the perfect time to fire an anti-curse spell on the victim. Yes, you will have to engage in sexual activities with your victim in order to heal them, it is the only option. If you’re wondering, I found this out the hard way.

Your tutor,
Princess Celestia.”

“Oh, you’ve gotta be kidding me...” Twilight muttered, gulping. A large blush had appeared on Twilight’s cheeks as she looked over to Rarity, who was still patting the empty space on the bed. Twilight reluctantly trotted over to the bed and slowly slipped in, her blush only getting deeper.

“Spikey, why don’t you give Twilight a little ‘welcome back?’” Rarity asked. The dragon nodded eagerly and jumped onto the bed. She’d have to heal both Rarity and Spike now, so she had the feeling it might be a rather long morning. Twilight’s wings weren’t providing any comfortable seating with them being so stiff, so she squirmed slightly. She spread her legs, gulping at the fact that her never-before touched cleft was already moist.

“S-Spike, y-you don’t have to give me a little welcome back present, you know? I-I’m fine with just watching you and Rarity play...” Twilight whimpered, rather nervous.

“Oh, it’s my pleasure Twilight, really!” The dragon said back, licking his lips slighly as his clawed hands rubbed over Twilight’s inner thighs. Rarity noticed Twilight’s particular nervousness though, so she leaned close to the alicorn.

“Relax, darling. it’s just like a visit at the spa, but more...fun...” She said softly, before doing something Twilight had never seen coming. The unicorn slipped a hoof under Twilight’s chin, turning her head gently before planting her lips on Twilight’s ever so lightly. Twilight’s eyes widened and her blush turned even more red, if at all possible. But Rarity was kissing Twilight passionately, her lips dancing. The unicorn then pulled back, smiling. Twilight seemed rather shocked, though, for she found all of this a bit rushed. She wanted to go home, but she didn’t expect a welcoming party like this.

Meanwhile, Spike was gently rubbing Twilight’s inner thighs with his clawed hands. The dragon stared at Twilight’s privates, his serpentlike tongue stroking over his lips in anticipation. Twilight gazed down to her assistant; and just when he extended his tongue and leaned his head forward, he was quickly stopped by Twilight’s hoof.

“R-Really, S-Spike, Y-You can f-finish w...with Rarity first...” The alicorn nervously spoke, forcing a smile on her lips.

“Oh, really, no need for that Twilight. I can wait. Besides, I think Spike’s been waiting for a taste of that special ‘gem’ for a long time.” She snickered, gently slapping Twilight’s hoof away and shoving Spike’s head forward, burying his face in Twilight’s unmentionables. Twilight let out a squeak and blushed deeply, her whole body shuddering as she felt Spike’s tongue softly stroke in between her labia. The princess tried holding back her moans, doing so by gently biting down on her hoof.

But Rarity didn’t make things easily. The unicorn leaned up to lick over Twilight’s horn gently. She wasn’t greedy with her saliva either, as the purple horn was quickly covered in it. Twilight closed her eyes, holding back her lust that tried thumping through her mind. Every time Spike’s tongue moved upwards, so did her hips slightly in a form of compensating. But it happened without Twilight even thinking about. Rarity was now properly sucking on the horn as she moaned gently, her tongue curling around the long object on Twilight’s head.

Twilight forced herself through this, continuously telling herself that all of those activities were to save her friends. For Equestria! But when Spike’s tongue started fooling around with Twilight’s sensitive clitoris, the alicorn emitted her first moan, which sounded a lot like just a squeak of surprise. Twilight pulled her hoof out of her mouth, her breathing rapid and heavy. Her cheeks were crimson red and a bead of sweat rolled from her forehead. Rarity was concentrating on gently sucking off Twilight’s horn, moaning to herself. Spike then suddenly retracted, his mouth and chin covered in Twilight’s lubrication. He wiped his lips and growled slightly.

When Twilight thought things couldn’t get any worse, they did. The baby dragon started growing, body and limbs extending to twice his normal size. But those weren’t the only things that had grown. Between his legs was a large phallus, the size of it easily confirmed as above average if he were a stallion. Twilight’s jaw had dropped as the dragon pushed Rarity off of Twilight, he himself now standing above her.

“Spike want!” He growled, staring straight into Twilight’s eyes, who was terrified. The dragon hungrily licked his lips, smirking as the head of his girth was pressing on Twilight’s entrance. Twilight’s wings were outspread on the bed as Spike placed his hands on them, preventing Twilight from moving too much as he applied pressure on his rod, trying to slip it into Twilight. Rarity was watching with a giggle, a soft blush on her cheeks.

“I can’t wait until it’s my turn...” She said with a grin, Twilight looked over to her and tried to yell at her, but she was stopped by Spike’s tongue slipping in her mouth. The alicorn winced slightly, feeling her cleft starting to part for Spike’s cock; and just like that it entered. Twilight’s eyes went wide as her inner walls stretched for the first arrival. The mare squirmed slightly, moaning loudly on to Spike’s slithering tongue. Twilight’s eyes almost begged for her assistant to stop, but the pleasure pulsating through her body was just too much.

Spike only got his rod halfway in, the size of his girth not matching the depth of Twilight’s nethers. But the dragon found it to be good enough, as he eagerly started thrusting in and out. Twilight sucked on the tongue, grunting softly as it slipped back out of her mouth. Twilight moaned as Spike’s thrusting was increasing in speed and strength, pushing Twilight up slightly. But Spike held her in place by her wings. The mare winced and moaned from the pleasure, Spike’s brute force stretching her like she could never imagine.

Twilight squirmed slightly, feeling the pressure build up within herself. Pulse after pulse of pleasure shocked through her body every time Spike slammed his rod in. Twilight’s moans grew louder and suddenly she couldn’t stop herself. A loud moan emitted from deep within her throat as her legs started twitching. Her cunt tightened in reflex as Twilight was punched right to heaven. Her eyes rolled back and her breathing was rapid in between her cries of pleasure. She squirmed and flexed her body, before suddenly relaxing.

“Was that your first, Twilight? It seemed rather heavy...” Rarity giggled. Twilight frowned, her face red from the pleasure and shame. Spike’s groans were getting louder as well, and Twilight could feel his length throb within her. Her horn started glowing, preparing the anti-curse spell. But suddenly Spike forced Twilight’s head on the pillow, making her horn point to the headboard of the creaking bed. He grinned and let out a loud groan as he met his own climax, his thick pride squirting a few large doses of thick goo in to Twilight. The alicorn fired her spell, but all it did was slam into the board.

Spike pulled his rod out, the green aura around him fading. Spike looked around, seeming confused at first, but the green aura quickly returned and the dragon licked his lips, his body growing again. The dragon was now twice the size of Rarity and his rod reached a size that would even strike Trixie with awe. The reptile huffed and crawled towards Rarity, grinning.

Twilight was panting and resting, Spike’s thick seed leaking from her used nethers. She looked over to Rarity, who grinned and grabbed Spike, pushing the reptile down onto the bed and straddling him. Twilight pulled herself up, having to watch the two do their thing in order to fire the spell at the correct time. But the spell wouldn’t be able to charge up quick enough to fire it two times in the short period the aura fades, so they’ll have to hit climax at separate times or one of them will remain cursed, meaning that one of them would have to do another round of this in order to help the remaining one.

Twilight grunted in frustration as she sat up, the warm sensation still burning down there. She felt sore, but she had to concentrate on the task at hoof. Her wings were still unable to fold at all, they just felt stiff.

Rarity lifted her hips up, grinning and stroking Spike’s chest as she did. Spike flailed his tail, causing it to smack on to Rarity’s flank, which made her emit a squeaky moan. The unicron slowly slipped herself on Spike’s massive member, letting out a loud moan. She could only get halfway there, squirming slightly in the hope to squeeze more in her tight nethers. Rarity moaned, her hips started moving in a gentle circular motion as she leaned on Spike’s chest. Twilight could judge by Rarity’s facial expression and the fact that she was sweating slightly that doing this was quite a heavy workout. The mare grunted and moaned as she tried her best to please the big Spike, her tail making slight twitches.

But everything went pretty gentle and passionately, compared with how Spike handled Twilight. Rarity kept a steady and slow pace, leaning up to plant a soft kiss on Spike’s lips, who eagerly kissed her back. Twilight smiled slightly, she would find this adorable if the two weren’t intertwined right in front of her because of an evil force that she had to wipe out. Twilight just sat on the bed as she watched Rarity and Spike in their passionate lovemaking. She was still recovering from her turn with Spike.

Twilight waited as the couple started speeding up, their moans increasing in volume. After a good amount of minutes, both of them moaned loudly. Twilight prepared her spell, but she growled in frustration as both reached their orgasm at the same time. Their auras faded and Twilight couldn’t make the decision of who to heal. She grunted and closed her eyes, randomly firing her spell. Rarity eeped and Twilight closed her eyes. Rarity blinked and glanced around, frowning slightly. While Spike was regaining his green aura. It seemed to take Rarity a good few seconds before she realised what position she was in; and it caused her to scream and jump off of Spike.

“DEAR CELESTIA!” She exclaimed. “Twilight, what’s happening?!” She asked in panic.

“I’ll explain in a second!” Twilight said, gulping as Spike stood up and grew more again. He barely fitted in the room, and his dick reached a size that it wouldn’t be able to fit in a normal mare. “But right now we have a bigger problem at hand...” She muttered. The reptile pointed down, to his erection. Both mares gazed at it, the shaft laying on the bed. Twilight gave Rarity a slight nudge. “Go on then...”

“I am NOT touching that thing!” Rarity exclaimed. “I am a lady!” She added.

“I took a hit for you, now you’re taking one for me! SUCK IT!” Twilight yelled, losing her temper as she shoved Rarity towards the oversized member. The unicorn gazed at it and gulped, giving the flesh a soft prod before sighing.

“I can’t believe I’m doing this...” She muttered. She leaned down and extended her tongue, the wet muscle stroking over it gently. She winced slightly at the taste, but lifted the member up and stroked it softly. She gazed down to it, admiring its size as she stroked over the throbbing shaft. Spike groaned and looked down to Rarity, who flattened her ears and licked over the head. She closed her eyes and continued to work on Spike’s erection. The girth was just too big to fit in her mouth, so she had to keep it with sucking, nibbling and licking. The mare nibbled along the side and licked over the whole shaft, trying to find Spike’s sensitive spots in order to coax the climax. Rarity watched Spike’s reactions carefully; and when her tongue stroked over a certain spot just under the head Spike grunted loudly.

Rarity grinned and started treating this spot, softly nibbling and sucking on it. Spike groaned, grinning as he already started getting close to climax. Twilight started preparing her spell, her purple horn glowing brightly. But when Spike met his orgasm, Rarity jumped out of the way, not wanting to get dirty, which caused Spike’s seed to shoot straight on to Twilight. She squeaked and covered her face with her hoof. Once the dragon was finished, his aura depleted, and Twilight quickly fired the spell.

The spell hit Spike, not only lifting the curse but shrinking him back to his normal size. Rarity couldn’t help but giggle at how Twilight looked, covered in a mess that was Spike’s seed. Spike blushed deeply, looking over at Twilight, who simply stood and trotted to the bathroom. The look on her face was clear that she wasn’t amused, at all. Spike sat on the bed, next to Rarity. The whole situation felt awkward for both of them. Outside, the sun had already fully appeared from behind the horizon. After a few minutes, Twilight walked out of the bathroom, completely clean.

“So.” She said, sitting down in front of Rarity and Spike. “I know both of you are really confused and probably feeling very dirty...because I am.” She started. “But Celestia sent me out because something happened in the Crystal Empire. Somepony or something casted a curse all over Equestria that causes everypony to be very...lusty... Just like with what happened to you two. Now, I have to gather the elements, who are affected by the curse and travel to the Crystal Empire to defeat whatever is housed there.” Twilight said.

“I’m with you, Twilight, but tell me...Will we have to go through more of these... practises?” She asked, looking over to Spike, who blushed and pulled a sheepish grin.

“I’m afraid so... The only way to lift the curse is to coax the victim into climax... And according to Luna; the curse can also change the gender of the victim.” Twilight explained.

“What?” Rarity exclaimed. “From all the worst things that could happen, this is the worst. Possible. THING!” She exclaimed, swooning and landing on the bed. Twilight sighed and shook her head.

“We’re losing time, we need to continue immediately.” Twilight said.

“Where are we going first?” Spike asked.

“I think the easiest way is to go to the closest element and proceed like that. So next up is...”

“The Sugar Cube Corner?” Rarity asked, earning a nod from Twilight.

“It can’t be any worse than what happened here, I hope.” Twilight said. “C’mon then, no time to waste.” Spike jumped on to Twilight’s back, who trotted downstairs and was followed by Rarity. Twilight lifted the saddlebags on to her, ignoring the fact that it seems lighter.

However, A certain box was left forgotten outside the bedroom door, a box with certain importance that Twilight shouldn’t have let go of.