Love and sacrifice is another big theme. The OC often falls in love with Itachi, and in the Naruto world filled with danger, there are many instances where they have to sacrifice for each other. It could be sacrificing their own safety or their dreams for the sake of the relationship or the greater good.
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.
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.
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.
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.
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 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.
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.
One common theme is the clash of their personalities. Itachi is calm and calculating, while Hidan is wild and impulsive. Fanfictions often explore how these two contrasting personalities interact. Another theme could be the exploration of their different beliefs. Itachi has his own complex moral code, and Hidan has his extreme religious views regarding Jashin.
One common theme is the clash of different worlds. Since Kagome is from Inuyasha's world and Itachi from Naruto's, there's often exploration of how their two very different universes interact. For example, different types of magic and combat styles.
Another theme is sacrifice. Given their fates in the original story, fanfictions often play around with the idea of how much they are willing to sacrifice for each other and for the greater good. It could be sacrificing their own lives or their own happiness for the other.
Another theme is identity. The oc has to establish their identity in a world full of pre - existing characters with their own identities. They may struggle with whether to blend in or stand out, like in some fanfictions where the oc tries to hide their true nature at first but then realizes they need to embrace it to make a real impact.