disclaimer: i do not own one piece

Phantom Thief Au

Luffy have been a thief for most of his life and a very good at that because even in broad daylight he was able to steal from some rich people without being notice or caught, but he was also a generous man because he would give most of what he stole to those who that didn't have any money so they could buy warm food and nice clothes while keeping a little amount for himself. Most of the people that Luffy stole from were people who would abuse of the power that comes with the money and treat other people that didn't have any money like garbage without any kind of decency. Luffy also a group (the Strawhats) who help him planned the heist for each occasion that appear to them and after the heist was done, they would split the part that they get to keep in equal parts between each of them.

Every time Luffy would steal from someone he will do it under his alter ego known as the Phantom Thief: a thief that would only do a heist in the dark of the night and not leaving a clue of his presence after the heist. One day Luffy hears about a necklace that could be worth billions, enough money to lay low and stop stealing for a time so Luffy and his team after all they could about their next target decided to steal that necklace. Luffy and his group located the necklace in the Frauce manor the house of a wealthy family which has rejected a lot of offers to sell the necklace and they also learned that the owner of the manor wouldn't be in there for at least week, so they would not have any problems of being caught while stealing the necklace. When the heist started Luffy climbed to the window that lead to the necklace, but he believed that this heist was easy almost too easy because there were no guards and the security system was shut down way before he enter by the window. When Luffy enter the room where the necklace was, he told his friends that he found the treasure but there was a problem: there was only a half of the necklace, and to add more problems Luffy was caught in a cage by the owner before he even got to escape.

The owner of Frauce manor was a tall woman of silver short hair with blue eyes and purple lipstick who was wearing a head scarf and a crimson outfit, this woman after releasing Luffy of the cage and greeting him introduce herself as Ban Dedessinnée made an offer to her guest but first he must gather all of his associates in the manor in a hour a request Luffy have to accept seeing that he could not refuse. After an hour the Strawhats came to the manor and were receive by Ban who then explain why they were there: the necklace (which was a family inheritance that belonged to Ban) they were after is called Cupid Kiss and what makes that necklace so special is that there is a rumor that if a woman wears that necklace she will find the love of her life, the problem is that the necklace has been split in two halves one half is in possession of Ban and the other half was stolen a few years ago and is currently in possession of Furrarri a wealthy man of dubious reputation who have been offering Ban in multiple occasions the opportunity of having the necklace complete once again if she accepts to marry his son, but Ban rejected every proposition because she doesn't want to be marry the son of a crook. After understanding the reason of why they were there Luffy ask Ban of what her offer and she is answer: steal every piece until the last penny of Furrarri's fortune, ruin him and to retrieve back the other half of the necklace, they would get to keep every last piece of his fortune and she will get to keep the necklace for herself and keep quiet about catching the phantom thief as well. Luffy and his friends accepted the deal seeing that they have more to win than to lose and believe that Furrarri was the kind of person who deserved to be stole.

The morning Ban informed the staff of the manor about having some guests for a time, so she asks all the personal of the manor to serve and treat them with the same respect they have shown her a request that was accepted without a problem. The next few days the straw hats have found all they could about Furrarri especially where he keeps his money, during that time Ban gain the trust of each of the straw hats and make a special bond with Luffy and one day they discover that Furrarri keeps all of his money and treasures in a safe hide in a part of his house, so they decided to use that fact to their benefit. A few days later some of the straw hats decide to do a closer research in Furrarri's manor disguise as a cleaning service so that way they could figure in where in the house was the safe being hide, after some time of cleaning the straw hats find out the location of the safe inside a wall of Furrarri's office so after the finish cleaning, they return to Ban's manor. After they gathered all the information all what was left to do was planning when to do the heist, luckily for them Ban came with the idea of the meeting that she and Furrarri do once a month in her house to negotiate the returning of the necklace which could take hours and she also tell them that the meeting would be held tomorrow night. With that information Luffy and his team then split the jobs in two teams: one team will be with Ban gaining time during the meeting and the other team in which Luffy will be will steal the necklace and all Furrarri's fortune.

The next day both teams were ready for the biggest heist in their life, when Furrarri came to Ban's manor that was when the heist started. The heist team was able to enter Furrarri's manor without any kind of problem and then went directly to the office where the safe was and started stealing every piece of the fortune from their target, while they were heisting Luffy found the other half of Ban's necklace as well diary that belongs to Furrarri which contains information about all of Furrarri's dirty deals, so Luffy hide both treasures and continue to steal from the safe. Luffy and his team stole every piece of the fortune they left the house without being seen and return to Ban's manor while Luffy do a little stop on his own in the way to do something that will make Ban very happy, Luffy return to Frauce manor after the sun has risen and was received by Ban who was happy to see him back. After Luffy return he told Ban that he will give her two surprises in the night which she gladly accepted, when the night came one of Luffy's surprises was revealed: it appeared in the news that Furrarri was arrested for various crimes of fraud and swindle (it turns out that the quick stop of Luffy was a stop in a police station in which Luffy has a couple of friends). Luffy and Ban alongside the Strawhats had a party to celebrate the success of their heist and the arrest of Furrarri.

When the party was over and the Strawhats left the manor Luffy wanted to have a private talk with Ban, in Ban's room Luffy show her his second surprise: he put around her necklace complete once again. Ban was so happy to have her necklace back that she kissed Luffy in the lips and she broke up the kiss she tells him that she loves him. Luffy reciprocated those feelings and started kissing her until their passion take fly.

Lemon scene

The next morning Ban woke up alone in her bed finding in one of her bedside table a note that says: I may have not stolen your treasure, but I have stolen your hearts and one day you will be the next to be stole. this note made Ban blush happily because she knew that one day, she will meet again with her beloved Phantom Thief.