One common theme is teamwork. Since they are both part of the Straw Hat crew, many fanfictions explore how they work together. For example, in some stories, Usopp uses his inventions to assist Nami in her navigation tasks. Another theme is friendship evolving into something more. Writers often show how their bond deepens over time, starting from a simple crewmate relationship.
There's also 'The Bond of the Straw Hats: Usopp and Nami'. This fanfiction focuses on how their relationship grows deeper during a difficult time on an island. Nami gets sick and Usopp uses his creativity to find a cure. It's a heart - warming story that really explores their connection as crewmates and potential for something more.
A key moment could be when Luffy gives Nami his straw hat to protect. In the One Piece world, Luffy's straw hat is extremely precious to him. By giving it to Nami, it shows how much he trusts and cares for her. Another moment is when Nami stitches Luffy's wound. Their closeness during this act can be seen as a sign of their growing affection. Also, when they face a powerful foe together and Luffy shouts out to protect Nami no matter what, it's a significant moment in their potential love story.
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.
In some 'usopp fanfiction', he might be the key to solving a mystery on the ship. Maybe there are strange occurrences that only his unique perspective and skills can figure out. This could involve his talent for creating gadgets and his sharp observational skills, which are often overlooked by others but prove crucial in these fictional scenarios.