In fanfiction, if Luffy and Hancock got married, it could be a really fun and unexpected story. Maybe Luffy would still be more interested in adventures and food, and Hancock would have to find a way to deal with his carefree nature. Their relationship might bring new dynamics to the world of One Piece. For example, the Kuja tribe could become more involved in Luffy's grand plans.
Start with small interactions. For example, the OC could accidentally save one of Hancock's pets or help with a small task on the island. This would make Hancock notice the OC in a positive light.
The theme of acceptance is also present. Hancock has a rather difficult past and her feelings for Luffy make her question a lot of things about herself. Fanfictions will sometimes focus on how Luffy's simple and accepting nature helps Hancock come to terms with her own identity and insecurities, and how she in turn becomes more integrated into Luffy's world.
Yes, there are many fanfictions exploring a romantic relationship between Luffy and Hancock. Some writers like to imagine how their different personalities would interact in a romantic context. Hancock is smitten with Luffy in the original story, and fanfic writers often expand on that, creating scenarios where Luffy gradually realizes his feelings for her too.
They could be united by a common enemy that is not related to the main plot of One Piece. Maybe an ancient power or a group of pirates from a far - off land that threatens both the Amazon Lily and the Straw Hats. Working together against this new threat would make their relationship deeper as they rely on each other's strengths. For instance, Hancock's knowledge of the sea around her island and Luffy's fearless combat style would be a great combination.
If Luffy and Hancock were married in fanfiction, their married life would be a blend of two very different worlds. Luffy's world is full of his crewmates, adventures, and the search for One Piece. Hancock's world is the Kuja tribe and her position as Empress. In their married life, Luffy would likely introduce Hancock to his friends like Zoro and Nami. Hancock would have to get used to the rowdy and free - spirited nature of the Straw Hat crew. At the same time, Luffy would have to respect Hancock's status in Amazon Lily. There would be challenges, but also a lot of love and laughter. Maybe they would have a home on an island that's a mix of Amazon Lily and the Straw Hat's style, where they can both be happy.
One idea could be that the OC is a lost traveler who washes up on Hancock's island. Hancock initially views the OC with suspicion but as time passes, she starts to see his unique qualities. Maybe the OC has some special knowledge about the outside world that intrigues Hancock.
One idea could be that Hancock's feelings for Luffy lead her to secretly help the Straw Hats in a dangerous situation. For example, when they are facing a powerful enemy on an island, Hancock uses her influence and powers to divert the enemy's attention.
There's also a fanfiction where Hancock decides to join Luffy's crew for a short time. This one delves into how the rest of the Straw Hat crew reacts to her presence. Luffy is his usual oblivious self while Hancock tries to fit in but still maintain her regal air. It's really interesting to see how their relationship develops during this time.