The theme of sacrifice is quite prevalent too. A pregnant character may have to sacrifice their own desires or even their safety for the sake of the unborn child. They might have to give up their freedom, their power, or their relationships in order to ensure the well - being of the baby. This sacrifice adds a layer of drama and emotional depth to the fanfiction stories.
Another theme is the struggle with the new identity. The pregnant character has to come to terms with this new state of being, which is completely different from what they are used to in the Vampire Diaries universe. They may face internal conflicts about their masculinity and their role in the supernatural world.
One common theme is the battle between good and evil. In both shows, there are clear lines between the heroes and the villains, and this is often explored in fanfiction. Another theme is the power of friendship and family. Characters in both shows rely on their friends and family members, and this is also a big part of the fan - created stories.
One common theme is love and relationships. OCs often find themselves in romantic entanglements with the existing characters from the show. Another theme is power struggles. Since the world of 'The Vampire Diaries' is full of powerful beings, OCs also get involved in power plays.
Love and acceptance are common themes. Since it's lesbian fanfiction in the Vampire Diaries world, the characters often have to deal with their own feelings in a society that may not be fully accepting, even within the context of the supernatural world of the show.
Love is a very common theme. Reincarnation often brings back characters who had a strong connection in a past life, and their love story gets a new chance in the Vampire Diaries world. Another theme is redemption. Characters may get a second chance through reincarnation to make up for their past mistakes.
One common theme is protection. Since vervain is known to harm vampires in the Vampire Diaries, many fanfictions use it as a means of protection for the human characters. For example, a character might wear vervain jewelry to keep vampires at bay.
One common theme is the power struggle. When a character is kidnapped, it often sets off a battle between different vampire factions or between vampires and other supernatural beings in the 'The Vampire Diaries' world, all vying for power or to protect their own interests.
Survival is a theme too. As a vampire in a dangerous world, fanfictions might show Rose's struggle to survive in different situations. Maybe she has to deal with new vampire hunters or face a powerful enemy that she has to outwit to stay alive. It adds a sense of adventure and danger to the stories about her.
One common theme is forbidden love. Since the 'Vampire Diaries' already has a lot of complex relationships, adding the 'lemon' aspect often means exploring relationships that are not allowed in the normal show context. For example, a vampire and a werewolf falling in love.
One common theme is identity. Since doppelgangers look alike but are different individuals, exploring who they really are is popular. Another is fate. Many fanfictions play with the idea that the doppelgangers are fated to certain things because of their existence.