Well, Luffy might be completely shocked at first. His father has been this mysterious figure for so long. He could start asking a million questions about his family history, his father's adventures, and why he wasn't around. And his father might be proud to see how far Luffy has come in his own journey, achieving so much and making a name for himself in the pirate world.
One Piece Luffy and Nami were one of the main characters in One Piece. Luffy was a brave and adventurous boy. His dream was to become One Piece, find the legendary One Piece, and become the most powerful pirate in the world. As for Nami, she was a female character with the ability of a genius navigator. Her dream was to find her " Goddess of the Sea " Robin and protect her from any danger.
Luffy and Nami played a very important role in the story, and their relationship was very rich. In the story, Luffy met Nami in an adventure and began their adventure. Although they often faced various dangers and difficulties, they had always supported and encouraged each other, becoming inseparable partners.
The crew would be really curious. They might see Luffy's father as a powerful ally. It could also boost their morale, knowing that Luffy has such a strong family connection.
Luffy shows his love for Nami in a very unique way. He gives her a great deal of freedom on the ship. He allows her to manage the money, which is a big sign of trust. Also, his constant protection of her is another way. For instance, during battles, he makes sure Nami is safe. He doesn't question her navigation skills and always follows her lead in that regard. His simple gestures like sharing his food with Nami also show that he cares about her in his own Luffy - like way.
There could also be a bit of a comical interaction. Luffy might try to challenge Dragon in some way, like a friendly spar or a test of wills. And Dragon, amused by Luffy's bravado, would play along while also subtly assessing Luffy's strength and potential.
In a One Piece fanfic, an OC (Original Character) as Luffy's rival could be really interesting. This OC might have a unique Devil Fruit ability that directly opposes Luffy's powers. For example, if Luffy has the Gum - Gum Fruit which gives him stretchy abilities, the rival could have a hardening or shrinking ability. This would create intense battles between them as they fight for different ideals on the Grand Line.
One popular type of 'One Piece' fanfiction involving Luffy and Dragon might be about their eventual reunion. Since Dragon is Luffy's father, many fans like to imagine the moment when they meet again. In some fanfictions, Dragon could be secretly guiding Luffy's journey without him knowing. This adds an interesting layer of mystery to Luffy's adventures as he is unknowingly following a path his father has some influence over.
One possible fanfiction could be about Zoro and Luffy's unwavering loyalty to each other. Zoro is always there to protect Luffy and vice versa. They might face a powerful enemy that tests their bond, and through their combined strength and trust, they emerge victorious.
If Luffy was kidnapped in a fanfiction, his crew would surely go to great lengths to rescue him. Nami would probably come up with a smart plan, using her knowledge of the seas and navigation. Zoro would be ready for a fight, not fearing any opponents in the way. Sanji would keep everyone fed during the rescue mission, while also being prepared to kick some kidnapper butts with his powerful kicks.