One common theme is friendship. Gene and Louise might be shown as having a deepening friendship through various adventures. Another theme could be family - like relationships, where they support each other like siblings.
Often, there are themes of self - discovery. In the fanfictions, Gene and Louise may embark on journeys where they learn more about themselves, and their relationship plays a role in that. For example, they might face a challenge together that makes them realize new things about their personalities. And sometimes, there are also themes of humor. Since both characters can be quite funny in the original work, fanfictions often play up their comical interactions.
Some 'gene x louise fanfiction' also explores themes of growing up. As they experience different situations, they might grow and change. This can involve changes in their attitudes towards each other, or towards the world around them. There could also be themes of mystery, where they team up to solve a mystery in their town or school, with their unique bond being a key factor in the story.
A common theme is the 'opposites attract' idea. Since Louise is bold and Rudy is shy, their differences make for an interesting dynamic in many fanfictions.
Friendship is a common theme. Writers often explore how Zane and Gene become friends and how that friendship evolves over time.
One common theme is friendship. They might explore how Gene and Zane's friendship develops over time, through different challenges they face together.
I think Archive of Our Own (AO3) is also a great place to find 'gene x louise fanfiction'. It has a large collection and a good tagging system. You can filter the stories based on your preferences like the rating, word count, and specific themes. There could be some really creative takes on the relationship between Gene and Louise in those fanfictions.
One common theme is growth. Both characters often experience personal growth through their relationship. For example, they might become more understanding or brave.
Love is a very common theme. Since they have a relationship in the original story, fanfics often explore their love in more depth, like how they overcome misunderstandings.
Many 'louise x saito fanfic' might explore the theme of cultural differences. Saito is from a different world than Louise, so their interactions can highlight how their different backgrounds shape their relationship. Additionally, themes of loyalty and friendship can be intertwined with the romantic aspect. They might face challenges that test their loyalty to each other, and their friendship can be a foundation for their romantic relationship in the fan - created stories.
One common theme is redemption. Gene often has a past that he needs to atone for, and Aphmau is a part of that journey. Another is the development of an unexpected relationship. They might start as enemies or strangers and then grow closer. Trust is also a big theme as Gene may not be the most trustworthy character at first, but Aphmau helps him earn it.
Love is a very prominent theme. Writers like to expand on how Louise and Saito's love blossoms and endures. Also, the theme of self - discovery for both characters is common. They often learn more about themselves through their experiences together in the fanfiction. For example, Saito might discover new magical abilities or Louise might find a new side to her personality.
One common theme could be the development of their relationship. It might show how they first meet, how they gradually fall in love, and the challenges they face in their relationship. Another theme could be adventure. Maybe they go on some quests or adventures together, which deepens their bond.