A plot where Jaune is the only one in his team who can master a certain martial art that is key to defeating a new type of Grimm. This would put him in a position of great responsibility as he has to train hard and quickly to teach his teammates at least the basics. It creates a lot of tension and character growth as he struggles to become proficient enough to save the day.
There are often fanfictions that explore Jaune's journey as a martial artist by having him learn from a mysterious mentor. This mentor could be an old Huntsman who has a different style of combat. Jaune would then have to adapt his new martial art skills to work with his existing weapon and combat style, which makes for an interesting read.
One possible plot could be that they are banished due to a false accusation. For example, they might be wrongly blamed for a crime they didn't commit within the RWBY universe. Maybe some powerful figure wants to get rid of them for political reasons.
Well, Jaune in RWBY fanfiction can vary a lot. Sometimes he's the underdog who overcomes huge challenges, and other times he might have unique powers or a special backstory.
Another plot could involve the baby having some special abilities or a unique origin. This could lead to Jaune having to protect the baby from those who might want to use it for their own purposes. For example, there could be villains who are after the baby because of its power.
One possible storyline could be Jaune teaching his child the skills he learned at Beacon. He might pass on his knowledge of combat and strategy, while also instilling in them the values of teamwork and friendship, just as he experienced with his team.
One interesting fanfiction could be about Jaune's journey to master his skills in a unique way that others haven't explored. Maybe he discovers a new form of combat that is exclusive to him. Another could be a story where Jaune has to face a powerful enemy alone and overcomes it through his wits and courage.
One possible secret could be about his family heritage. Maybe in the fanfiction, Jaune has a hidden connection to a powerful family in the RWBY universe that he's kept under wraps for some reason, like to avoid unwanted attention or because of some family feud.
It could be because Jaune is a relatable character. He starts off as a bit of an underdog in RWBY. So, fans like to write stories where the other characters notice his potential and become obsessed with him as he grows.
Another plot could be that the OC is an outcast too, for different reasons. When Jaune is expelled, they find common ground. They could then decide to leave the place together and start their own journey. Along the way, they learn more about each other's pasts and develop a strong bond while also trying to find a way to prove Jaune's innocence in the events that got him expelled.
One idea could be Jaune's journey in training the Maidens and how he helps them unlock their full potential. Maybe he discovers a new form of combat that combines their Maiden powers with his own skills.