Chapter 1: Temptation
A giggle could be heard in Twilight's house/library in Ponyville, one that would be taken for scheming. The lavender alicorn was plotting a little game to play with her sister-in-law, Princess Cadence, to show her that she wasn't one to be looked down upon. She was currently reading a book that was mysteriously given to her, but she didn't care about it until she read it. Now she was given ideas as to how much fun she could have. "Whoever gave me this book, thank you," she said to herself, having a predator's smile on her face. "But I probably won't need it considering what I'm about to plan on Cadence."
Then she turned to the door, hearing hoof-steps coming. It was Fluttershy, peeking her head out from the other side. "Twilight?" she said with her usual quiet voice
"Yeah, Fluttershy?" Twilight said, concerned for her friend.
"C-can I show you something?" the yellow mare continued. "A-and can you promise not to laugh at me?"
"Uh, sure. I promise I won't laugh." was the reply.
Fluttershy then stepped out for Twilight to see her whole body, to which the alicorn said in surprise, "What the...?" The pegasus was completely naked, and what would normally show a vagina was a rather large penis, instead. "Huh, so the spell was already made," Twilight commented, walking towards the mare and checking out the new body part.
"What do you mean?" Fluttershy asked out of curiosity, looking down.
"Eh, let's just say that I have made plans to create a spell identical to what you have as a new body part," Twilight replied. "But since it was already made, I guess I'll have to find out how it's done." She then looked in Fluttershy's eyes with lust, stroking her cock with a finger. "You wouldn't mind if I tested this thing, would you? For... science purposes, you could say."
The pegasus blushed hard, not knowing what to say before nodding slowly. "Uh... s-sure. Y-you can, I guess."
"Thank you," she said, smiling lightly before getting on her knees. She started licking the tip of the cock, which made Fluttershy moan lightly. Then the yellow mare's eyes widened, a feeling so different overcoming her. "O-oh my..." she stammered, a lust sensation washing over her.
Twilight looked up in confusion while licking, before suddenly the shaft was drilled right in her mouth. She moaned out loudly in surprise at the sudden thrusting, but she took it like a champ. Even with the fast thrust, it didn't make her gag at all. She felt it going out and slamming back in, which was the result of Fluttershy thrusting her hips continuously. She giggled mentally, holding on her friend's hips and going with her motions in the opposite way.
It only took a few minutes, but Fluttershy eventually started cumming, which Twilight let some in her before getting her head out and letting her face get wet. The purple alicorn got up, but was almost immediately pushed to her bed by Fluttershy, her lust well controlling her actions. "Wh-whoa!" Twilight said in shock, wondering why she was doing this.
"I'm sorry, Twilight," Fluttershy said. "I-I can't help myself." She exposed Twilight's cunt and rammed her cock in it. The alicorn closed an eye, but she didn't feel any pain from it. Like, absolutely nothing. Her body must be immune to sex pain from regular ponies, it seemed. She bore a concerned expression throughout the sudden rutting from the yellow Pegasus, just letting her bang her to what seemed to be no end.
Another few minutes passed before Fluttershy came again, this time pulling out of her friend's pussy and letting the fluids run all over the body. Twilight still had a concerned expression, but she smiled. "Well, that was a nice experiment, to say the least."
"I'm sorry, Twilight," Fluttershy said quietly. "I couldn't control myself."
"It's okay, Fluttershy. Besides, I think I figured out what that cock you have is made for." She got up and off of her bed and went to the closet to get her pants, which were the same color as the shirt she had on. "But just for safe measure, I'm going to have a talk with Celestia about this, to see what she makes of what happened to you." She put on her pants, then walked over to Fluttershy, pointing to the window. "While I do so, how about you go and rut Pinkie to your lust's liking?"
"Wh-what?" Fluttershy looked stunned, looking at the window and seeing a happy Pinkie Pie at the other side of the mirror. "O-oh."
"You can use my bed, but just make sure to clean it when you two get done," Twilight said, when Pinkie joined them in her room
Pinkie was jumping for joy. "Yay! I get to be rutted!"
Twilight smiled, walking out of her room, but not before saying, "See you girls!" and taking off out of her house and to Canterlot.
