One common theme is the empowerment of the female Usopp character. Writers often explore how she can use her skills and intelligence in new and exciting ways. Another theme could be her relationships, like her friendships with the other Straw Hat members in a more in - depth way or even potential romantic relationships.
In the past, Usopp's abilities like his slingshot skills might be seen as more primitive compared to the advanced weaponry in his own time. But his creativity could give him an edge. For example, in a time when there were less advanced long - range weapons, his slingshot could be a very unique and effective tool. In the future, if he travels there, his abilities might seem obsolete at first. However, he could adapt by using his knowledge of old - fashioned combat and combine it with the new technology he finds.
Sanji would go all out in cooking the most nutritious and delicious meals for Usopp to help him recover. He might also be a bit overprotective, not allowing anyone to disturb Usopp while he's eating. Chopper would be in full - on doctor mode. He'd be constantly checking Usopp's vital signs, giving him medicine, and trying to figure out the cause of the sickness. Robin would be quietly researching any possible cures or causes, using her knowledge of history and ancient texts.
Zoro is also a popular character in fanfiction. Some writers focus on his backstory and how it might be further developed in the Netflix - inspired fanfiction. They might show his training in more detail, or create new challenges for him that test his loyalty to the crew and his strength as a swordsman. For instance, he could face an opponent who uses a new type of swordsmanship that he has to quickly learn to counter.
One interesting One Piece Netflix fanfiction could be about a new character joining the Straw Hat crew during their adventures in the Netflix - adapted world. This new character might have a unique power that helps them in battles against the Marines or other pirates.
In a fanfiction, Usopp could get sick from a cursed item they found on an ancient ruin. This sickness slowly drains his energy and his ability to tell lies (which is a big part of his character). Luffy, not fully understanding the severity, tries to cheer Usopp up in his own goofy way. Zoro might be more practical and keep a lookout for any enemies who might take advantage of Usopp's weakened state. Chopper, of course, is desperately trying to find a cure, but is facing difficulties due to the unknown nature of the curse.
Well, he could time - travel to a point where the Straw Hats first formed but he's the only one who remembers the future. This would lead to some really funny and interesting situations. He might try to prevent some of the early hardships they faced, like the fight with Buggy. Or perhaps he travels to a time during the Void Century and discovers secrets that could change the course of the current One Piece world. He then has to figure out how to bring this knowledge back to his own time without causing chaos.
One idea could be a story where Sanji and Usopp get stranded on a strange island together. Sanji has to rely on Usopp's creativity to find food sources that are not immediately obvious, while Usopp depends on Sanji's combat skills when they encounter dangerous creatures on the island. This would force them to bond and understand each other better.
Sanji's chivalrous nature can be further explored. For example, when he and Usopp are in a dangerous situation, Sanji could put himself in harm's way to protect Usopp, which shows his loyalty and sense of honor. Usopp, on the other hand, can develop his courage. Maybe he stands up to a powerful enemy to protect Sanji, overcoming his usual cowardice and growing as a character.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a large collection of One Piece fanfictions, and you can specifically search for those related to Female Usopp. Just type in the relevant keywords in the search bar, and you'll likely find a variety of stories to choose from.