A more emotional plot could be about Bart feeling left out when Lisa gets all the attention for her academic achievements. They then go on a journey to understand each other better, and in the process, they strengthen their sibling bond.
One idea could be a story where Bart and Lisa team up to solve a mystery in Springfield. Maybe there's a strange occurrence at the school and they use their unique skills, Bart's street smarts and Lisa's intelligence, to figure it out.
Well, one interesting aspect could be the exploration of different relationships between Bart and Lisa. It might show their sibling bond in new and unique ways, like in adventures where they rely on each other more than usual. Maybe it also delves into how they grow and change as characters within the fan - created stories.
A possible plot could be that Bart enters a parallel Springfield where the rules of attraction are different. There, he finds himself in the middle of a harem of female versions of his friends and enemies. He has to navigate this strange new world while trying to find a way back to his own Springfield, all the while dealing with the different personalities in his harem.
One popular Bart and Lisa fanfiction might be those that focus on their sibling adventures. For example, a story where they team up to solve a mystery in Springfield. Another could be about them helping each other through school problems, like Bart helping Lisa deal with a bully at school, and in return, Lisa tutors Bart for an important test.
Maybe in a modern AU (alternate universe), Ichigo is a regular high school student and Lisa is a new transfer student. They meet in the library where Ichigo is studying for an exam and Lisa is looking for some rare books. Their initial encounter leads to a series of events that bring them closer together, like working on a school project.
A plot might involve Bart getting into trouble as usual, but this time Greta is the one who has to bail him out. They then form an unlikely friendship. For example, Bart accidentally destroys something important at a local event that Greta is involved in. Instead of getting him in trouble, she helps him fix it, and from there they start to do other things together, like starting a small business in the neighborhood.
One possible plot could be that Bart and Lisa have to team up to solve a mystery in Springfield. Maybe there's a strange phenomenon happening in town, like all the donuts are disappearing. Bart's street - smart ways and Lisa's intelligence combine to track down the culprit, which turns out to be Sideshow Bob in a very elaborate scheme to get revenge on the town in a new and wacky way.
Well, 'bart lisa fanfic' might center around the unique bond between Bart and Lisa. Maybe it's a story where they team up to solve a mystery in Springfield. For example, they could be trying to figure out who's behind some strange happenings in town, and along the way, their sibling relationship gets explored more deeply, like how they support each other and overcome their differences.
A plot idea could be that Dean discovers he has some sort of inherited power that could be passed on to the baby. This leads to a race against time to figure out if it's a good or bad power. Lisa, on the other hand, is trying to prepare for the baby's arrival in a normal way, like setting up the nursery. Their different focuses create some interesting tension in the fanfiction.
One idea could be that Dracula discovers Lisa has a unique power that can free him from his eternal curse. For example, her kindness might be the key to breaking the dark magic that binds him.