Runaway Lucy Heartfilia finally gets to join Fairy Tail, house and school for homeless kids. What she didn't expect was to be brought there by a pink-haired, pyrotechnic black belt with a blue cat, that she might start falling for him, or that this boy could help her solve the mystery behind the golden keys left by her mother that hold a deadly secret. High school ninja AU. Nalu.

Gray x Lucy. Mirajane tries to rid Gray of his undressing habit, but Lucy manages to ruin all her progress. But perhaps she can solve the problem once and for all.