One great fanfiction could be about their adventures on a new island not shown in the original story. Maybe they encounter a powerful and strange new enemy. Luffy's determination, Zoro's strength, and Sanji's culinary skills all come into play in this new situation.
There are quite a few out there. Some popular ones can be found on fanfiction websites like Archive of Our Own. Just search for 'Zoro x Luffy Yaoi' and you'll get a list. However, the quality can vary greatly.
Another theme is rivalry. Zoro and Sanji have a friendly rivalry which can be elaborated on in fanfictions. For instance, they might compete in a friendly tournament on the ship to see who is stronger or more useful in a certain situation.
Well, they could be in a situation where a powerful enemy targets female Luffy specifically because of her unique abilities as a female version of Luffy. Zoro vows to protect her at all costs. This could lead to some intense battles where Zoro has to fight opponents far stronger than him while trying to keep female Luffy safe. Meanwhile, female Luffy could be using her smarts and powers to find a way to defeat the enemy from the sidelines, perhaps by finding its weakness and relaying it to Zoro during the fight.
Their relationship could develop through shared cooking experiences. Since Zoro loves sake and meat, female Luffy could try to cook for him in her own clumsy but endearing way. This could lead to some comical and heartwarming moments as Zoro tries to be polite about her cooking while also teaching her how to make it better. Through these interactions, they could grow closer.
For many fans, it's the idea of taking the deep friendship and loyalty that Zoro and Luffy have in the One Piece world and turning it into a romantic relationship. It adds a new layer of depth to their interactions. Also, the contrast between Zoro's tough - guy exterior and Luffy's more carefree nature makes for an interesting dynamic in these fanfictions. The fanfiction writers can play around with different scenarios that the original anime might not explore, like how they deal with jealousy or misunderstandings in a romantic relationship.
Well, one possible plot could be that Luffy, while on one of his adventures, accidentally stumbles upon Dragon in a secret island. They initially don't recognize each other, but then some events unfold that make them realize their connection. Maybe they end up having to team up to fight against a common enemy that is threatening the freedom of the island's inhabitants.
๐I highly recommend One Piece: Replicating Talent from Elbaf to you! This light novel was about a transmigrator in the world of Luffy, Sauron, Ace, and Shanks. Although it was a Doujinshi novel, the plot was very attractive, especially the interaction between the male and female protagonists and the setting of the copying talent. I hope you like this fairy's recommendation. Muah ~๐
The World Government could be the main antagonist. They see both Luffy as a growing threat to their rule as a pirate and Dragon as a revolutionary. When Luffy and Dragon meet, the World Government might send their strongest agents like the Admirals to stop them from joining forces. The World Government's strict control over the world and their desire to maintain the status quo would put them in direct opposition to Luffy and Dragon.
A powerful and corrupt World Noble could be the main antagonist. They might be trying to stop both Luffy and Dragon's efforts for freedom. The World Noble could have a large military force under their control and be causing chaos and oppression in various parts of the world. This would force Luffy and Dragon to join forces to take them down.