Disclaimer: I do not own Fairy Tail or Naruto

Prologue

Celestial Spirit keys; magic items that enables its user to call upon a spiritual being to aid them in battle. Each key is its very own gate for its very own spirit. In order to call upon them for battle, the wizard first needs to establish a contract with that spirit. There are many different types of keys that mages, or wizards as they are more commonly referred as, can use. It is said that the Gold Zodiac keys are the strongest out of all the keys out there. However, that is untrue. There is an even more powerful set of keys that exist, far surpassing that of the Zodiac's. They are the Tailed-Beast keys.

X~X

Lucy walked through the large port town of Hargeon. She carried at her hip a ring with several keys, signifying that she was a celestial spirit wizard. Not one of the more popular forms of magic, however pretty effective depending on the wizard. She liked to think of herself as one of the better celestial wizards out there, but that might just be wishful thinking. After all, she barely had any experience. The only thing she really had going for her were the keys themselves. She carried four silver keys; Crux "The Southern Cross", Horologium "The Pendulum Clock", Lyra "The Lyre", and the recently acquired Nikora "The Canis Minor". She also had three out of the twelve coveted Golden Zodiac keys; Aquarius "The Water Bearer", Taurus "The Golden Bull", and Cancer "The Great Crab". However, most impressively, she carried one of the strongest keys known to celestial wizards. One of the Tailed-Beast keys.

Not much is known about this particular set of keys. Only that there are nine in total and that the keys are cursed. Apparently, the spirit beast associated with the key cannot actually be summoned to Earthland. Anyone who tries to summon the beasts will be sucked into the key. When the person is sucked into the key, they become immortal and must serve as the new spirit of the key, the Jinchūriki, with the beast's guidance until they die. Then the curse will start all over.

No one really knows how the curse came to be or how to break it. Not many people care. As long as they have power, they don't care that some poor soul was sucked into the key and must now serve them. However, Lucy is different. She cares about all her spirits. It's one of the reasons why she has such good connections with them. It's also why it is now her mission to find a way to set the Jinchūriki free. All of them.

X~X

A/N: So I tried writing this story before, but I got really side tracked and just didn't have the time to finish it. Now I feel more organized and ready to start this story again. I'm really excited about this and I can't wait to really get into it. I have most of the storyline figured out and listed the rules so I can keep them straight while writing. Updates on this story will be very slow. VERY SLOW. I cannot guarantee a set update schedule, so I'm very sorry if that is an inconvenience to any of you. Anyway, hope you enjoy the story.