Held Captive (NaLu AU)

Lucy Lucky Heartfilia was a police officer. Part of the Special Crime Investigation Department in Magnolia Metropolitan Police. This department specializes in pursuing the infamous thief in Fiore, Salamander. Known for his remarkable talent in disguising and tactic, Salamander always shown up for every precious jewel exhibition in the country. However, the thief also is known to always returning the jewels he did not fond of, but that did not mean he was not guilty.
What would she do if their department needs to team up with the famous thief, after they reveal his true identity, in order to catch the deadly criminal organization in Fiore, Tartaros? It was not a ceasefire nor peace. It was a bargain.

"You need me to catch them right? I have all the links to them."
"Yes."
"Let's make a deal, officer"
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DISCLAIMER!! I DO NOT OWN ANY OF THE CHARACTERS. ALL CHARACTERS BELONG ONLY TO HIRO MASHIMA. I ONLY OWN THE STORY PLOT.

I beg your pardon for lots of grammatical error might found in this story. English is my second language. But I will try my best!