In a land far, far away lies the Kingdom of Fiore: a small, peaceful nation of seventeen million, and a place filled with magic. Found in every home, bought and sold in every marketplace. For most, magic is a tool, a mundane part of everyday life. For some, however, magic is an art and they have devoted their lives to its practice. These are the wizards. Banded together into magical guilds, they apply their skills in search of fame and fortune. Many such guilds dot the landscape of Fiore, but there is a certain guild in a certain town that soars high above the rest, one from which countless legends have been born. A guild that will no doubt continue to create legends well into the future. Its name… is Fairy Tail.

The Demon Is Born

"Natsu!" a white-haired girl dressed in a gothic get up shouted to get the attention of her best and only friend. "Natsu!"

"What's up, Mira?" asked the pink-haired dragon slayer after swallowing a bite of his blt.

"Silly Natsu, did you forget that you promised to train with me today?" asked Mira, grabbing his forearm with both of her hands. "We've gotta work hard if we wanna beat that armor-wearing freak and her pet stripper!"

"Then let's go!"

Natsu and Mira sat facing each other as they prepared to train. The training grounds surrounded them.

"What kind of magic do you use, Mira?" asked Natsu.

"Pardon?" asked Mira. "My transformation magic is all I can think of."

"Every wizard needs to have an extensive repertoire of offensive spells to be an effective fighter," began Natsu. "I am a fire dragon slayer. I can envelope my fists with fire to empower my punches. This is called Fire Dragon's Iron Fist. I can also breathe fire in an attack called Fire Dragon's Roar. With Fire Dragon's Wing Attack, I can slash my opponent with fire as if with wings." He paused in thought. "Have you ever considered Take Over Magic? With such magic, a wizard can put on the souls of creatures or spirits as if donning a coat. The wizard signs a contract with the spirit or creature. I, in fact, am in possession of the contracts belonging to a family of spirits known as the Satan Soul family. Are you willing to make a deal with the devil, Mira?"

"Sign me up, Natsu," said Mira, salivating at the thought of wielding such powerful magic. Natsu removed a contract from his tunic and whipped out a red quill.

"Sign the contract for Satan Soul with this blood quill, Mira," said Natsu. Mira took the quill and signed the contract with flourish. The transformation was instantaneous. Mira's face and clothing became demonic and she grew a tail. "Wow, Mira. You look damn sexy." Natsu was turned on big time.

"Then take me, dragon boy," the demonic Mirajane growled. While Natsu would have loved to, he knew that their training time was limited.

"Later," purred Natsu, causing Mira to pout. "Try to change back." With intense effort, Mira managed to transform back to her human form. "Now, sign the next contract." Natsu pulled out the contract for Satan Soul: Stiri.

As Mira signed the contract of the more powerful spirit, she morphed again. "Damn it, Mira. I can hardly control myself!" Mira took that as her cue to change back. It took greater effort than before. Without a word, Natsu handed Mira the contract for Satan Soul: Hephaes. Mira signed the contract and instantly transformed into her most powerful Take Over yet.

This time, Natsu was unable to control himself as he jumped the sexy demon. He grunted as he speared into the demon's wet snatch. Mirajane flashed between forms as her magic's stability weakened due to the intense pleasure that she felt. As Natsu released his load into the demon's womb, Mira sighed in contentment. "That was incredible, Natsu," said Mira as she snuggled into her lover's embrace, once again in human form.

"As good as that was, we have training to do," said Natsu, freeing himself from the demon-girl's grasp. "There are more contracts, as well."

"What?" gasped Mira. "How can anything be more powerful than Hephaes?" Natsu shrugged before pulling out the contract for Satan Soul: Tigris.

"Tigris is the most powerful of the lesser Satan Soul forms," said Natsu as Mira signed the contract, prompting a fourth transformation which prompted a second round of passion between the two wizards. "Ready for the greater Satan Soul demons?" asked Natsu. Mira nodded, causing Natsu to pull out the contract for Ultra Satan Soul: Columbia. Mira signed the contract, prompting a fifth transformation. "Goddess," breathed Natsu as he took in Mira's fifth Take Over form. Mira giggled as she transformed back into her human form.

"It seems you plan to ravish my Columbia form later," observed Mira. Natsu merely nodded as he pulled out the contract for Ultra Satan Soul: Chaos. Mira signed the penultimate Satan Soul contract without a word, prompting her sixth transformation. Natsu's eyes ravished the form of Chaos before Mira managed to transform back. Natsu then handed her the contract for Ultimate Satan Soul: Lucifer. Mira signed the final contract, prompting her seventh and final take over form to reveal itself. "The she-demon is born," giggled Mira.

Natsu nodded in agreement as he took to a fighting stance. "Let's go!"

Natsu and Mira rested up in the infirmary as their training injuries healed. They were promptly visited by Gramps.

"I must say, I am shocked that you two managed to hurt yourselves in training enough to warrant a stay in our infirmary," began Makarov. "You remind me of how I was at that age, always training myself to the brink of death. It is how I gained the title of Wizard Saint."

"Don't worry, gramps," said Natsu. "I merely underestimated the power of Mira's Ultimate Satan Soul transformation. If it wasn't for that, she'd be the only one in here."