There are several common themes. For example, power dynamics play a role. Naruto is a powerful ninja, but so was Madara. In a love story, how they balance their powers and respect each other's strength can be a theme. Also, there's often the theme of acceptance. Naruto accepting the female Madara for who she is, including her past mistakes and her complex personality. And of course, there's the overarching theme of love conquering all, which is a classic in fanfiction, where their love overcomes any obstacles like the hatred that Madara might have carried in the original story.
Love and relationships are also common themes. It could be her relationship with other main characters in Naruto. Maybe she has a romantic interest in a character like Naruto or Sasuke, which creates a whole new dynamic in the story. Or it could be about her friendships or rivalries within the ninja world.
In these fanfictions, a frequently seen theme is the clash of ideologies. Naruto, with his belief in friendship and peace, and Female Madara, who may have different views due to her background. Their relationship then becomes a way to reconcile these differences. Another theme is growth. Both characters grow as individuals because of their relationship. Also, the theme of acceptance is there. They accept each other's flaws and strengths, which is crucial for their relationship to develop.
One common theme is loyalty. Their loyalty to each other as brothers is often explored, whether it's tested by the events in the ninja world or by their own personal goals. For example, in many fanfics, they have to choose between their loyalty to the clan and their loyalty to each other.
One common theme is the power dynamic. Since both Naruto and Madara are very powerful characters, exploring how their powers play into their relationship is often a key aspect. For example, in some fanfictions, their powers are what initially attract them to each other.
The theme of redemption can also be present. Madara was considered a villain, but Naruto might see some good in his initial intentions. So, Naruto could try to redeem Madara's name or ideals in a way. He could take the positive aspects of Madara's vision for the ninja world, like unity among the clans, and work towards achieving it in a more peaceful and inclusive manner.
Power. Most fanfictions focus on the extreme power of Madara's Rinnegan. They explore how it can be used to dominate battles or change the Naruto world. Another common theme is mystery. Since the Rinnegan has many unexplored aspects in the original series, fanfictions often try to uncover its secrets.
A common theme is the transfer of power and knowledge. Madara Sensei is often depicted as having a vast amount of knowledge about ninjutsu and the ninja world in general. So, in many fanfictions, he passes this on to Naruto.
One common theme is redemption. Often, the female character tries to redeem Madara from his dark path. Another is the power of love. Many fanfictions show how the female's love can change Madara's actions and beliefs.
Many fanfictions also touch on the theme of the afterlife. Since Edo Tensei is a form of resurrection, questions about what it means for Madara to be brought back, and how it relates to the afterlife in the Naruto universe are often explored. There could be stories that delve into his relationship with the person who resurrected him and what their end goals are in relation to his Edo Tensei state.
One common theme is power struggle. Since the heir is related to Madara, who was extremely powerful, there are always those who either want to use the heir for their own gain or eliminate them out of fear. Another theme is identity discovery. The heir often has to figure out who they are and what their place is in the Naruto world.