One common theme is power and ambition. Since Orochimaru is known for his pursuit of power, the OC often gets caught up in that. Another is the exploration of the dark side of the ninja world. Orochimaru is a rather dark character, so the OC may have to deal with moral gray areas. And there's also the theme of self - discovery. The OC in these fanfictions usually has to figure out who they are in relation to Orochimaru and the world around them.
In Orochimaru OC fanfiction, the theme of identity is quite prevalent. The OC has to define themselves in the context of Orochimaru's world. Another common theme is survival. Being associated with Orochimaru can be dangerous, so the OC has to find ways to survive. And the theme of redemption can also be present. Even though Orochimaru is a villainous character, the OC might try to find a way to redeem him or themselves in the story.
Power - seeking is a common theme. The oc is often trained by Orochimaru to gain great power. Survival is another one. Given Orochimaru's dangerous and unpredictable nature, the oc has to constantly fight to survive the training. Also, self - discovery. Through the tough training, the oc discovers their own limits and capabilities.
One common theme could be the exploration of Orochimaru's complex character in relation to the original character (OC). It might involve the OC being drawn into Orochimaru's world of dark magic and experiments. Another theme could be a relationship of power imbalance, where Orochimaru's power and influence play a major role in the story with the OC.
Power and control are common themes. Orochimaru is always seeking power, and when paired with an OC, often there's a struggle for control in their relationship. The OC might resist Orochimaru's influence or be drawn to it in a complex way.
One common theme could be the power struggle. Orochimaru is a powerful and often cruel character. In a fanfiction with an OC (original character), the torture aspect might be used to show how the OC tries to resist Orochimaru's power. Another theme could be the exploration of dark magic or jutsu. Since Orochimaru is into such things, the OC might be tortured as part of his experiments with forbidden techniques. Also, there could be a theme of redemption. Maybe the OC manages to change Orochimaru in some way through their experiences of being tortured and interacting with him.
Another theme could be the exploration of good and evil. Harry is typically seen as a 'good' character, while Orochimaru is more morally ambiguous. Fanfictions might play with the idea of whether Orochimaru can be redeemed or if Harry is influenced by Orochimaru's more ruthless ways.
Common themes include Orochimaru's curiosity about Hinata. Given his scientific and power - hungry nature, he might be intrigued by Hinata's abilities. Also, there could be themes of danger and protection. Hinata could be in danger from Orochimaru's schemes, and then other characters might come to protect her. It's also possible to see themes of transformation, where Orochimaru's influence causes Hinata to change in some way, or vice versa.
One common theme is power dynamics. Orochimaru is a very powerful character in the Naruto universe, and in harem fanfictions, there can be a play on how his power affects his relationships with the other characters in the harem. Another theme could be redemption. Sometimes, the fanfiction might explore Orochimaru's journey towards redemption through his interactions with the harem members.
A common theme is redemption. Since Orochimaru has done many bad things in the original series, in fanfiction with a female version, she often seeks redemption through her interactions with Naruto. Naruto's positive influence drives her to change for the better.
In such fanfictions, a common theme is the struggle between light and dark. Since Orochimaru is associated with dark jutsu and Naruto with the will of fire. Naruto might have to face the dark side within himself that he inherits from Orochimaru. Also, acceptance is a big theme. Naruto has to accept this new - found family relation which is so different from what he thought. And family loyalty could be explored as Naruto decides whether to side with Orochimaru or the village that raised him.
One common theme is redemption. Orochimaru is often depicted as seeking redemption through his relationship with Naruto. Another theme is the power of love to change a person, as Naruto's positive nature might be shown as influencing Orochimaru.