unexpected (fairytail fanfiction)

a six year old Lucy Heartfilia and six year old Natsu dragneel knew each other and were the best of friends when Lucy goes missing. Natsu and his family help the Heartfilia's to search for Lucy. two years later all hope of finding Lucy was lost, her family and the dragneels stopped searching but the young salmon haired boy didn't lose hope. Now 12 years after the disappearance of Lucy, five years after natsu dragneel stopped his search a mysterious hooded figure approaches the guild.
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what connection does this hooded figure have with certain members in the guild and are they really who they say they are?