One common theme is the power struggle. Given that both Naruto and Madara are extremely powerful characters in the Naruto universe, a fem Naruto might have a different dynamic in the power struggle with Madara. Another theme could be redemption. Madara has a complex backstory, and fem Naruto could play a role in his journey towards redemption or vice versa.
In many of these fanfictions, the theme of identity is explored. Fem Naruto has a different gender identity compared to the original Naruto, and this can impact how she is perceived in the Naruto world and how she interacts with Madara. Additionally, the theme of legacy is present. Both Naruto and Madara have important legacies in the series, and the fanfics might explore how fem Naruto and Madara's relationship affects or reshapes those legacies.
Typically, one common theme could be power dynamics. Since both Naruto and Madara are very powerful characters in the Naruto universe, in fanfiction, especially with a female Madara, there might be exploration of how their powers interact. Another theme could be redemption, perhaps Madara seeking a different path with Naruto's influence.
One common theme is the exploration of an unlikely relationship. Given that Hidan has a rather extreme and violent personality in the original Naruto series, the fanfiction might focus on how a female version of Hidan could form a relationship with Naruto in spite of their differences. Another theme could be redemption. The female Hidan might be on a path to change from her more negative traits, and Naruto could be a part of that journey.
The theme of redemption can also be found. Itachi, in particular, is a character with a lot of moral complexity. Fanfictions might explore how his actions, which were often seen as controversial, could be redeemed in the eyes of Madara or vice versa. Or how they both, in their own ways, sought to atone for the sins they committed against their clan or the ninja world. This could involve them coming to a new understanding of their own motives and the consequences of their actions.
Another theme is mutual support. Given Mikasa's strong and protective nature, she might be shown as a source of support for the female reader in difficult situations, and vice versa. For example, when the female reader is dealing with the loss of a loved one, Mikasa is there to comfort her, and when Mikasa is having doubts about her own actions, the reader offers words of wisdom.
One common theme is redemption. Often the fem OC tries to redeem Madara from his darker paths. Another theme is love that defies all odds, like clan differences or Madara's past actions. Also, the exploration of power dynamics between them can be a theme, as Madara is a very powerful character.
One common theme is the struggle against clan differences. Since their clans are often in conflict in the original Naruto lore, in fanfiction this becomes a major obstacle for their relationship. For example, they might have to keep their love a secret to avoid causing more strife between the clans.
Often, the theme of redemption is present. Fem Madara may be depicted as having a change of heart or being redeemed through her relationship with Hashirama. Additionally, the theme of sacrifice is common. They might sacrifice their own beliefs or desires for the sake of their relationship or for the greater good. The theme of loyalty also pops up a lot, as they are loyal to each other in different ways, which is interesting to explore in these fanfictions.
One key theme is friendship. Despite their clans' differences, fem Madara and fem Hashirama can form a strong bond of friendship. Another theme is breaking gender stereotypes. In the Naruto world, they are powerful female characters who don't conform to the traditional roles. Also, the theme of unity is important. Their relationship can symbolize the unity that could have been between the Uchiha and Senju clans.
One common theme is power struggle. Fem Madara often kidnaps characters to gain an upper hand in the shinobi world. Another theme is redemption. Sometimes, through her interactions with the kidnapped characters, Fem Madara starts to question her own actions and motives. And there's also the theme of unexpected alliances. The kidnapped characters may end up teaming up with Fem Madara against a greater threat.
One common theme is the exploration of unrequited love. Often, fem Madara's obsession is tinted with romantic feelings that Naruto may or may not be aware of. This creates a lot of tension in the story.