In some fanfictions, the plot could be centered around the little sister's discovery of Jeff's past that led him to become a killer. She might then try to reverse the events or change his future. There could also be a sub - plot where she is trying to fit into a normal life while being related to such a notorious figure. This would involve her hiding her identity from others and dealing with the fear of being discovered. It could also show how she copes with the isolation that comes with having such a dark family secret.
Well, a plotline might involve the little sister being in a constant struggle between her loyalty to Jeff and her own sense of right and wrong. She might also be hunted by the same people who are after Jeff, which would add a lot of tension to the story. And she could form an unlikely alliance with someone who initially wants to kill Jeff but then realizes she can be a force for good in the situation.
Often, there are the victims or potential victims of Jeff. They might be ordinary people in the neighborhood who start to notice strange things going on and suspect Jeff. Another common character could be a detective or a police officer who is trying to solve the mystery of the killings and might eventually cross paths with the little sister.
One common theme is family. It often explores the relationship between Jeff and his sister in the context of his transformation into a killer. Another theme could be protection, like how the sister might try to protect Jeff or vice versa. Also, there's the theme of horror and how she copes with the terrifying world Jeff has become a part of.
Another plotline might involve Sally and Jeff going on a journey together to find a way out of the nightmarish place they are in. Along the way, they face various challenges that test their relationship. Jeff's killer instincts might conflict with Sally's more innocent and hopeful nature, but they learn to work together and in the process, their bond deepens.
One possible interesting plot could be the little girl befriending Jeff in a very unexpected way. Maybe she finds him when he's injured and instead of being scared, she tries to help him. This could lead to a strange bond where Jeff has to protect her from other threats in his dark world.
Yes, there are some interesting ones. You can find them on various fanfiction websites. Just search for 'Jeff the Killer Little Sister fanfiction' and you'll get a list. Some might focus on the relationship between Jeff and his little sister, while others could create unique storylines around her character.
Well, in this type of fanfiction, perhaps the victim discovers that Jeff has a weakness during the kidnapping. It could be something psychological. And then they use that knowledge to try and escape. Or, it could be that Jeff has some sort of ulterior motive for the kidnapping other than just causing harm, like he needs the victim for some dark ritual.
A common plotline is the exploration of their partnership in chaos. They might go on killing sprees together in a horror - filled world. Another is the idea of a rivalry, where they compete to be the more feared or powerful entity within their fictional universe.
A plotline could also be about her relationship with the Marauders. Since Remus is part of the group, she could have her own interactions with them. She might become friends with them, or there could be some initial tension. For instance, Sirius might be overprotective of Remus and be a bit wary of her at first, but then they grow to understand and trust each other over time.
Another plotline could revolve around her relationship with Bella. For example, she might be jealous of Bella's relationship with Edward at first but then come to understand and support it. She could also have her own love interest within the Twilight universe, perhaps a new vampire or werewolf character that was introduced just for the fanfiction.
A lot of the fanfiction focuses on the power struggle. Jeff has his own dark power, and sometimes his sister also has some sort of power, and there is a struggle between them in terms of who is more powerful and how that power is used. Also, the theme of protection is there. The sister may try to protect others from Jeff or protect Jeff from himself.