An old friend of Lucy's comes to Magnolia, They hang out a lot. Natsu seems different, Why?

Hello guys! I'm fairytailhomie! I want to give a shout out to my favorite author in the whole wide world: Summermia_. If you don't know who she is go ahead and look her up, she's an amazing fan fiction writer of fairy tail :D. Anyway back to the story, this book is about Lucy minding her business watching her favorite movie, when all of the sudden there's no sight of her.

3 important people return to Lucy who were they? read to find out