Fairy Tail: Sacrifices (A NaLu Fanfiction)

Summary (you can skip this)

Just a normal day in the guild of Fairy Tail.  That is, until Lucy and Natsu find a mission that is specifically asking for them.  It's a mission about a mysterious staff, that has a strange and dangerous history.  Grey and Erza tag along, hoping they could help.  The staff is being searched by a descendant of an evil Dark wizard named Blackveil, who is planning to destroy all the guilds in revenge for his former teacher's demise.  In order to defeat them, Lucy figures out she has to make a sacrifice; a sacrifice Natsu absolutely is against, because it could mean the cost of Lucy's life.