Some common themes are loyalty and love. In Yu - Gi - Oh fanfiction, loyalty to friends can often be in conflict with new - found love. For example, if Tristan fell in love with a new girl, he might have to decide whether to stay loyal to his old group of friends or pursue this new relationship. Love as a form of redemption is also a theme. A character who has done bad things in the Yu - Gi - Oh universe, like a member of an evil organization, could find love and through that love, seek redemption. And of course, the theme of love across different worlds or dimensions. If a character from the Yu - Gi - Oh world falls in love with someone from another dimension, they would have to deal with the challenges of being in a relationship across such boundaries.
Crazy trouble with love in Yu - Gi - Oh fanfiction can be shown in various ways. One is by creating complex relationships. For instance, a character might be in love with two people at the same time, like Kaiba being in love with a female duelist and also having some feelings for his secretary. This would create a lot of internal conflict for him. Another way is by introducing external forces that try to break the relationship. The Millennium Items could have some sort of influence that tries to keep two characters who are in love apart. And then there's the way that the characters' different personalities can cause trouble. If a very shy character falls in love with an outgoing one, like Mokuba falling in love with a popular girl, there could be a lot of awkwardness and miscommunication in their relationship.
One common theme is redemption through love. Bakura is often a complex character, and in some fanfictions, the love of another character helps him turn away from his darker tendencies. Another theme is forbidden love, especially if it involves a relationship that goes against the norms or rules in the Yu - Gi - Oh world.
One of the common themes is the clash of cultures. Vampires bring their own set of rules and values which often collide with the traditional Yu - Gi - Oh dueling culture. Survival is also a key theme. Vampires need to survive in a world that may not be very friendly to them. And the theme of love and loyalty can be present. For example, a vampire might be loyal to a particular group or have a romantic relationship with a non - vampire character in the Yu - Gi - Oh setting. In some fanfictions, the theme of discovery is there too. Vampires might be on a quest to discover new cards or powers in the Yu - Gi - Oh universe.
One common theme is self - discovery. The OC often starts out not fully understanding their place in the Yu - Gi - Oh world and through their interactions in the harem, they learn more about themselves. Another theme is friendship. Even within the harem concept, there are strong friendships that develop among the characters.
One common theme is friendship. Just like in the original Yu - Gi - Oh! and Dragon Maid series, characters from both form bonds and help each other out. For example, in some fanfictions, a Yu - Gi - Oh! character might be in trouble and the Dragon Maids come to their rescue, and vice versa.
A common theme is self - discovery. The OCs often start as unknowns in the Zexal world and through their dueling experiences, they learn more about themselves. Another theme is friendship. They form bonds with the existing characters like Yuma and his friends.
Another theme is friendship. When characters from different series meet, they usually form new friendships or strengthen existing ones. This is often shown through them working together in duels or facing challenges as a team. In a lot of these fanfictions, you'll see Zexal characters and characters from other Yu - Gi - Oh shows bonding over their shared love for dueling.
One popular theme is alternative duels. Writers might create new rules or types of cards for really exciting and unique duels. Another theme is character backstories. For example, exploring more about the past of Kaiba or Joey before they became duelists. And relationships are also a big theme, like the friendship between Yugi and his friends, or even some romantic relationships that could be hinted at in the anime but are further developed in fanfiction.
One common theme is power exploration. Writers often explore how the Dark Magician's powers interact with the new world he's in. For example, in a crossover with a superhero universe, they might show how his magic compares to super strength or flight abilities.
Love and friendship are very common themes. Since they are friends in the original series, fanfictions often explore how that friendship can develop into something more romantic.