Often, loyalty is a big theme. The male OC has to decide who to be loyal to - his own ideals, a particular character, or a group. And there's also the theme of sacrifice. In the dangerous world of Code Geass, the male OC may have to sacrifice something important for a greater good. For example, he might sacrifice his relationships or his own safety. There's also the exploration of new abilities and how the male OC uses them to either conform or disrupt the status quo.
One common theme is power and its corrupting influence. The male OC often has to deal with the allure and danger of power in the Code Geass world. Another theme is identity. Since the OC is original, there's a focus on how he discovers and defines himself within the context of the existing story.
A prevalent theme is the search for justice. In the chaotic world of Code Geass, the male OC tries to find his own version of justice. This could be in contrast to the existing power structures or in line with some noble cause. Another common theme is friendship and camaraderie. Despite the power struggles and political intrigue, the male OC forms bonds with other characters, and these relationships are often explored in depth. And then there's the theme of redemption. Sometimes the male OC has a past that he needs to atone for, and his journey in the Code Geass world becomes a path to redemption.
One common theme could be power struggles. Since Code Geass is about a world with complex power dynamics, Marrybell OC fanfics might explore how an original character fits into that, whether they are trying to gain power, resist it, or something in between.
One common theme is the power dynamics. Since 'Code Geass' has a complex power structure, in the harem fanfics with Villetta OCs, the OC often has to navigate the power plays between different characters. Another theme is loyalty. The harem members may have different loyalties, and the Villetta OC has to deal with that.
Well, in 'Code Geass OC x Kallen fanfic', loyalty is a big theme. The OC might have to prove their loyalty to Kallen and her cause. Another theme is the idea of sacrifice. In the world of Code Geass, characters often have to make sacrifices for the greater good. The OC could be in a situation where they have to sacrifice something for Kallen or their shared goals. And of course, the theme of acceptance is there too. Kallen might need to accept the OC, who could be very different from the people she usually associates with.
Often, in 'Code Geass OC x Shamna' fanfics, there are themes related to power and power dynamics. Since Code Geass is a series that deals with power - granting abilities, the OC might have their own unique power that interacts with Shamna's character in different ways. Also, themes of loyalty and betrayal can be present, especially when the OC has to make choices that involve Shamna and other characters from the Code Geass world.
One common theme is redemption. Since Lelouch has done many morally ambiguous things in the original series, some fanfics focus on him trying to make up for his past actions. Another theme is love and relationships, such as his relationship with C.C. or his sister Nunnally.
One more theme that pops up a lot is the exploration of 'what - if' scenarios. Fanfic writers like to play with the idea of what would have happened if certain events in the series had been different regarding Lelouch and Shirley. For instance, what if Shirley had found out about Lelouch's true identity earlier? This leads to different relationship dynamics and storylines in the fanfics, which is really interesting to read about.
One common theme is the exploration of gender roles. Since Lelouch is female in these fanfics, it often challenges the traditional male - dominated power dynamics in the original Code Geass world. For instance, a female Lelouch might have to use different strategies to gain power and respect.
One common theme is power acquisition. Since 'Code Geass' is about special powers, self - insert characters often gain a unique Geass or some other extraordinary ability and then have to figure out how to use it in the complex world of the series.
Well, often the theme of isolation is present. Lelouch was a very lonely character in many ways. In a suicide fanfic, this isolation could be exacerbated. He might feel that no one truly understands him or his motives. It could also explore the theme of power and its consequences. Lelouch had great power with his Geass, and his suicide could be a way of escaping the burden of that power. Maybe he realizes that the power has corrupted him in some ways or led to too much destruction, and death is his way out. And then there's the theme of legacy. His suicide could be seen as a way to leave a certain kind of legacy, whether it's a martyr - like one or a cautionary tale about the pursuit of power.