One great male reader Code Geass male OC fanfic is 'The Hidden Power'. It has an engaging plot where the male OC has a unique Geass ability that sets him on a path to change the world of Code Geass. The story does a great job of integrating the OC into the existing Code Geass universe, with well - written interactions with the main characters.
I really liked 'A New Destiny in Code Geass'. In this fanfic, the male OC is a brilliant strategist. The story unfolds as he teams up with the main characters, and his decisions and actions have a huge impact on the events in the Code Geass world. It's a must - read for fans of male OC fanfics in the Code Geass setting.
A good plot is essential. It should fit well within the Code Geass universe. For example, if the male OC has a Geass power, it should be something that makes sense in the context of the show's rules about Geass. Also, the interactions with the existing characters should be believable. If the OC is suddenly best friends with Lelouch without any good reason, it won't be a good fanfic.
Another interesting one is 'The Male OC and the Geass Revolution'. In this fanfiction, the male OC discovers his Geass power by accident and uses it to try and change the fate of the oppressed people in the Code Geass world. The story has a lot of emotional depth as it delves into the OC's internal conflicts, his relationships with other characters, and his moral dilemmas.
There's also 'Brotherhood in Code Geass'. This fanfic focuses on the unbreakable bond between Lelouch and his brother. The OC in this story is a catalyst for change. It's filled with action - packed scenes and emotional moments that will make any Code Geass fan love it.
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.
There's also 'A Prince's Redemption'. This fanfic delves deep into the moral struggles of the OC prince. It shows his journey from a somewhat lost and conflicted character to one who finds his true purpose. The writing style is engaging and it stays true to the overall tone of Code Geass.
One great Marianne fanfic is 'The Lost Queen'. It delves into her backstory before the events in Code Geass. The author does an amazing job of portraying her character, showing her strength and intelligence. It also gives some interesting insights into her relationship with other important characters in the series.
One great 'Code Geass Haro' fanfic could be 'Haro's Adventure in Code Geass World'. It's a fun read where Haro gets involved in the complex politics and battles of the Code Geass universe. It gives Haro a unique personality and role that's different from its usual appearance in Gundam-related stuff.
One great fanfic in this category is 'The Geass Exchange'. It explores an alternate scenario where Lelouch gives his Geass to a different character, Suzaku. This creates a whole new dynamic as Suzaku, with his own set of beliefs and moral code, has to grapple with the power of Geass. The story delves deep into how the Geass affects his relationships, not just with Lelouch, but also with other characters in the Code Geass universe like Euphemia. It's a really interesting take on the concept of Geass transfer and how it can change the course of events.
An 'OC' (original character) fanfic in the 'Code Geass' universe centered around the emperor can be really interesting. It might explore the emperor's backstory in more depth, perhaps from a different perspective than the original series. For example, it could show his early life and how he came to hold such extreme views in the series.
One popular 'Code Geass Yuri Fanfic' is 'Lelouch and the Yuri Alliance'. It has an interesting take on the characters, exploring different relationships in a yuri context. The story has some well - written dialogues that bring out the essence of the characters from Code Geass.