One common theme is redemption. Since Itachi has a complex past filled with dark deeds in the Naruto series, many fanfictions use an OC to help him find redemption or at least a sense of peace. Another theme is love. Whether it's a romantic love or a deep platonic bond, the relationship between Itachi and the OC often explores different forms of love.
Power and its consequences is also a frequent theme. The OC might have a special power, and how they and Itachi deal with it, whether it's a source of danger or a means of achieving their goals. And of course, there's the theme of secrecy. Itachi is a character full of secrets, and when an OC enters his life, the fanfiction often shows how they navigate around his secrets and how those secrets affect their relationship.
Power and its consequences is also a theme. The male oc may have unique powers or abilities, and together with Itachi, they face the implications of having such power in the Naruto world. It could be about how to use power for good or the sacrifices that come with it.
One common theme is redemption. Since Itachi has a complex and tragic past, many fanfictions use the Si OC to be a part of his journey towards redemption. For example, the OC might help him come to terms with his actions in the Uchiha massacre.
Another theme is the clash of different worlds. Since the OC is often an original creation, their background and values may be different from Itachi's. This can lead to interesting conflicts and resolutions. For instance, if the OC is from a more carefree village and Itachi is from the strict Hidden Leaf, they'll have to find a way to bridge that gap in their relationship. Also, redemption is a theme sometimes. Itachi has a lot of guilt in his past, and the OC can be a source of redemption for him, helping him come to terms with his actions and find some peace.
The theme of redemption also pops up often. Since Itachi has a complex and somewhat dark past, the OC might be a factor in his journey towards redemption. And for Kakashi, the OC could be a new chapter in his life, helping him move on from past traumas or regrets. This makes for a very interesting dynamic in these fanfictions.
High school drama is also a common theme. Things like rivalries, popularity contests, and friendship groups can all play a part. The OC might get caught up in these typical high school situations, and Itachi could be the one to help her navigate through them or vice versa, adding a layer of complexity and relatability to the story.
One common theme is friendship. Since Itachi is such a complex and interesting character, many fanfictions explore how an OC can form a deep and meaningful friendship with him. For example, they might bond over their shared love for the village or a mutual understanding of the sacrifices one has to make in the ninja world.
Another theme is sacrifice. Given their fates in the original Naruto story, fanfictions often play with the idea of how much they were willing to sacrifice for their village, their clan, and for each other. For example, Shisui's sacrifice and how it affected Itachi.
One common theme is his struggle between family loyalty and his own sense of justice. Young Itachi often has to deal with the expectations of his clan which may conflict with what he believes is right.
One common theme is redemption. Since Itachi has done some controversial things in the original story, many fanfictions focus on him finding redemption through his interactions with Naruto. Another theme is friendship. Naruto has a way of befriending almost everyone, and in fanfictions, this friendship with Itachi is often explored.
One common theme is the clash of cultures. For example, when Itachi is in a different universe like the Star Wars universe, his ninja way is very different from the Jedi or Sith code. So, there's often exploration of how his values and beliefs interact with the new world's. Another theme is power comparison. When he meets characters like Goku from Dragon Ball, there's a comparison of their different power levels and how Itachi can hold his own.