Power dynamics is a big theme. Orochimaru has a lot of power and knowledge, and he uses it to manipulate Sasuke. Sasuke, in turn, is trying to gain power from Orochimaru while not being completely controlled. Another common theme is the struggle between good and evil. Sasuke is on a very thin line between becoming a tool for Orochimaru's evil plans and finding his own path towards redemption or justice. Also, the theme of mentorship is there, as Orochimaru is in a sense Sasuke's mentor, but a very unorthodox and dangerous one.
A common theme is the Uchiha heritage. Sasuke's Uchiha blood is a big part of his identity, and Orochimaru is interested in it for his own purposes. Fanfictions might explore how Orochimaru tries to unlock the secrets of the Uchiha bloodline through Sasuke. Another theme is the idea of revenge. Sasuke's desire for revenge on Itachi is what leads him to Orochimaru in the first place. So, many stories will show how this desire is either strengthened or weakened during his time with Orochimaru. And the theme of isolation is also present, as Sasuke is isolated from his friends and family while with Orochimaru, and he has to deal with that loneliness.
One common theme is friendship. Despite their initial rivalry, they gradually form a bond. Another is growth. They both develop as ninjas and as people. For instance, Naruto learns to control his chakra better, and Sasuke becomes more understanding of others.
A common theme is power and its corrupting influence. Orochimaru, in his pursuit of power, abuses Sasuke who is also seeking power. Another theme is the loss of innocence. Sasuke, who starts off as a somewhat naive boy, gradually loses his innocence due to the abuse.
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.
Well, since I haven't delved deep into orochimaru and sakura lemon fanfiction, it's hard to say for sure. However, possible themes could be redemption. Maybe Orochimaru has some kind of journey towards redemption in relation to Sakura. Another theme could be the clash of different values. Orochimaru has his own set of rather dark values compared to Sakura's more positive and growth - oriented ones. And there could also be a theme of unexpected alliances or relationships that develop between them in these fanfictions.
One common theme is Sasuke's search for power and how it affects his relationships. For example, in many fanfictions, his pursuit of power makes him question his bond with Naruto. Another theme is his family. Fanfictions often explore how the memory of his family shapes his actions and decisions. Also, his return to Konoha and how he is received by the villagers is a popular theme.
One common theme is revenge. Since Sasuke is driven by revenge in the original series, many fanfictions about young Sasuke explore his thoughts and feelings regarding revenge at an earlier age. For example, how it starts to consume him even as a young boy.
The theme of redemption can also be found. Given Orochimaru's actions in the Naruto series, some fanfics might explore the idea of him finding redemption through his relationship with Sasuke. Another common theme is the exploration of Sasuke's dark side, which Orochimaru may have influenced. This can include Sasuke's moral choices and how Orochimaru's teachings play into that.
One common theme could be the exploration of Orochimaru's complex and often dark character in situations that deviate from the main canon. However, forced scenarios in fanfiction are not ethical in real - world terms and should be treated as fictional exploration. Another theme might be the power dynamics within the fan - created situations.
One common theme is the exploration of Sasuke's character in a female form. It might involve her relationships, either romantic or platonic, with other Naruto characters. Another theme could be her journey of self - discovery, especially if the fanfiction delves into how being female changes her experiences.
One common theme is friendship. Given their complex relationship in the original series, many fanfics explore how they rebuild and strengthen their friendship over time. They might have adventures together, learn to trust each other again after Sasuke's departure and return.