Please Don't Take My Sunshine Away (A Fairy Tail Fanfic)

Lucy has been making great strides in Stellar Spirit Magic. Having all her spirits out at once, binding with them, and most recently, creating a key. The only problem with the last one is that she doesn't have a spirit to go into the key yet. But, one night while she was stargazing, a spirit confronted her. Her name was Sisco, the sun spirit. And finally, Lucy's key was complete.

After a year training with her Lucy is confronted by the Celestial Spirit King. He has a special mission only Lucy may do for she has made contact between the Sun and the Celestial Spirit world possible. Find out what her special mission is and how it ends up.