Well, in such a fanfiction, there could be various hints. Maybe Zoro's behavior might be more in line with typical female characteristics described in that specific fictional world, like being more empathetic or having different social interactions compared to the original male - character version. But it really depends on how the author has crafted the story.
A magical healer could be a great ally. Since Zoro often gets injured in battles, the healer can patch him up. Also, the healer might be able to use magic to enhance Zoro's physical abilities for a short time, like making his strikes faster or stronger.
One great Robin and Zoro fanfiction is 'The Unlikely Alliance'. It shows how their different skills and personalities complement each other during a difficult adventure on an uncharted island. The story has a great mix of action and character development.
Yaoi fanfiction often explores relationships in unique ways. In Mihawk x Zoro yaoi fanfiction, it could depict their dynamic as one of mutual respect and unexpected closeness. Maybe it shows how Mihawk's powerful presence affects Zoro, and how Zoro's determination might intrigue Mihawk. However, these are just some general ideas as different fanfictions can take the relationship in various directions.
Character growth is a big part. Since they are both complex characters in the original. Fanfiction might show Zoro becoming more in tune with his emotions around Robin, and Robin becoming more confident in her physical abilities with Zoro's influence. Like in some stories where Zoro teaches Robin basic self - defense moves, and Robin in turn helps Zoro understand some ancient texts related to their adventures.
In these fanfictions, their relationship can develop through shared battles. When they fight side by side against tough opponents, they understand each other better and their trust deepens.
Zoro could react in a rather gruff way. He might say something like 'Nami, are you out of your mind?' But deep down, he might be secretly flattered. After all, Nami is an important person in his life. He'll probably need some time to process this unexpected turn of events and think about what it means for their relationship, both as nakama and potentially something more.
One character that would fit well is Robin. Her knowledge of the world and its secrets could be relevant if there's some mystery involved in the Zoro - Mihawk relationship. Brook, with his unique personality and his own skills as a swordsman, could also be included. He could have some interesting conversations with Zoro and Mihawk about swordsmanship. And Shanks, as a great swordsman himself and a significant figure in the One Piece world, could potentially play a role in the story, perhaps as an old acquaintance of Mihawk.
Character interaction is really important. If Zoro is in a crossover with, say, other anime characters, how he interacts with them, whether they become friends or foes. Also, the plot often revolves around a new threat or goal. Maybe Zoro has to help save a world that's not his own from destruction. And the setting plays a big role too. A strange new world can bring out different aspects of Zoro's personality.
Often, there could be themes related to the challenges of pregnancy in a world like One Piece. For example, how Zoro would protect himself and the unborn during battles. Also, the emotional journey of Zoro coming to terms with being pregnant and how it changes his relationships within the crew is a possible theme.