One common theme is role reversal. It flips the traditional dynamic between Naruto and Sasuke, which makes for an interesting exploration of their characters. Another theme is the exploration of family and domestic life. Since Naruto is in the role of Sasuke's wife, they often have to deal with things like running a household, which is a big change from their usual ninja adventures.
One common theme is redemption. Sasuke has done a lot of things that some might consider wrong, and in many fanfictions, Naruto is the key to his redemption. Another theme is friendship. Their bond is often explored in different ways, like how they support each other in tough times. Also, the idea of power and how they use it together or against each other can be a theme.
Another theme is redemption. Sasuke's actions in the original story make his path to redemption a popular topic. Fanfictions might show how Naruto helps him find his way back to the good side. For example, in some stories, Sasuke has to make amends for his past deeds with Naruto's support.
One common theme is the struggle with their pre - existing friendship and how it transitions into a romantic/mate relationship. Another is the acceptance within the ninja community. Since it's a non - traditional relationship in the Naruto world, they often have to face some form of opposition or at least surprise from their friends and comrades.
Another common theme is the adjustment to the Naruto world. Since the oc wife is an original creation, she has to adapt to the unique culture, powers, and politics of the Naruto universe. This often creates interesting plotlines as she tries to fit in while also being with Sasuke.
The theme of growth is very common. All three characters - Naruto (the adopter), Naruto (the younger self) and Sasuke - experience personal growth. They learn from each other, share their skills and knowledge. For example, Naruto might teach Sasuke some new jutsu, while the younger Naruto learns about the importance of friendship from Sasuke. This mutual growth is what makes these fanfictions interesting.
The theme of sacrifice also shows up a lot. Both Naruto and Sasuke are characters who are willing to sacrifice for the other in the original story, and this is often explored further in fanfiction. Writers might create scenarios where one has to make a big sacrifice for the other, which then tests and deepens their relationship.
Power and its limits is another one. In these fanfictions, we see them constantly testing their powers. Naruto might be trying to master new jutsus without losing himself. Sasuke could be grappling with the power of his Sharingan and how far he should go with it. Kakashi, with his Sharingan and his own unique skills, also serves as an example of someone who has learned to control and use his power effectively within certain limits.
Another theme is the way she is perceived in the ninja world. As a girl, she may face different expectations and prejudices. Some fanfictions explore how she overcomes these and still manages to be a strong ninja. In many of these stories, she has to prove herself more because of her gender.
One common theme is the resolution of their complex relationship. The kiss often symbolizes a new start or a deep understanding between them.
Well, redemption is a major theme. Sasuke, who has made some wrong choices in the original story, often has a journey of redemption within these fanfictions in relation to his friendship with Naruto. Also, the theme of mutual understanding is very common. They have to understand each other's motives, dreams, and fears in order to have a strong friendship. In many fanfictions, they gradually learn about these aspects of each other.