Isolation is also quite prevalent. Vampires are often solitary creatures, and Sephiroth, being as complex as he is, is shown to be isolated even more so in these fanfictions. He may be shunned by others due to his vampiric state, or he may choose to isolate himself because of his new - found powers and the thirst that comes with being a vampire. And there's also the theme of the unknown. His vampiric abilities and how they work are often a mystery, and the fanfictions usually unfold this mystery gradually.
One more theme that's common is the allure. Vampires have an alluring quality, and Sephiroth in these fanfictions often has an irresistible charm. This allure can be used for both good and bad. It can be a tool for him to manipulate others, or it can be something that draws others to him in a more positive way, like a form of charisma that he uses to gain allies or followers. There are also elements of the supernatural world that are explored, such as how vampires interact with other supernatural beings, if there are any in the fanfiction.
One common theme could be power. Both Harry and Sephiroth are associated with great power in their respective universes. So, fanfictions might explore how Harry's new - found connection to Sephiroth affects his power levels or how he uses it. Another theme could be identity. Harry having elements of Sephiroth in him might make him question who he really is.
One common theme is redemption. Many fanfictions try to explore the possibility of Sephiroth finding redemption through his interactions with the original character. For example, the OC might show him a different way of life or values.
Themes of power and identity are quite common. Both Sephiroth and Cloud have strong identities related to their power. In fanfiction, it's often explored how their powers interact and affect their relationship. Additionally, the theme of destiny is often present. Whether they are fated to be enemies or if there's a chance for a different path for them.
One common theme is the exploration of her backstory. Since Sephiroth is such a complex character in the original, a female version might have a different backstory or the same one with a different emotional perspective. For example, how she dealt with her discovery of her origin.
A theme that's often explored is the blurring of good and evil. Cloud is typically seen as the hero and Sephiroth as the villain, but in fanfiction, these lines can get very muddy. Writers like to play with the idea that maybe there are more shades of gray to their characters, and this affects how they interact with each other.
One common theme is loyalty. The little brother is often portrayed as being extremely loyal to Sephiroth, no matter what. Another theme is discovery. The little brother might be on a journey to discover his own identity, which is often tied to his relationship with Sephiroth.
In 'Harry Potter Sephiroth fanfiction', a recurring theme is the adaptation of Sephiroth to the new environment. He has to deal with the rules, cultures, and social structures of the wizarding world. There may also be a theme of power struggle, as Sephiroth's power could either be a threat or an asset in the fight against the dark forces in the Harry Potter series. Additionally, the theme of identity can be explored, as Sephiroth may question who he is in this new and different world.
Another theme could be the cultural differences between the two universes. The Final Fantasy world has its own set of values, and the Sekirei world has its own. Fanfiction might play with how characters from these different cultures interact and adapt. For example, Sephiroth might find the concept of Sekirei pairs very strange at first. It can lead to interesting character development and relationship building within the story. And this often makes for an engaging read as the author tries to blend these two very different worlds together in a believable way.
One common theme is redemption. After being hurt, Sephiroth often goes through a journey of redemption with the comfort he receives as a catalyst. Another theme is self - discovery. Through the process of being comforted, he starts to understand himself better.
Character growth is also a major theme. As they interact, both Naruto and the female Sephiroth are likely to change. Naruto might learn about the darker side of power from Sephiroth, and Sephiroth could learn about the value of friendship and loyalty from Naruto. This mutual growth makes for an interesting exploration in the fanfictions.