Well, it could involve Jaune using Jedi-like powers in the RWBY universe. Maybe he discovers an ancient relic that gives him the Force and he has to learn to control it while still dealing with the Grimm and his normal RWBY duties.
Another possibility is that Jaune's Jedi - like journey is a parallel to his growth as a huntsman in RWBY. As he delves deeper into the Jedi - like powers, he realizes that there are similarities between the two worlds. The Jedi's focus on the light side could be compared to the huntsmen's fight for good in RWBY. He might also face a dark side equivalent in the RWBY universe, perhaps in the form of a powerful Grimm or a corrupted huntsman, and he has to resist it using his Jedi - inspired strength of will.
His character could become more self - assured. Jedi are known for their confidence in their abilities, and Jaune might gain that as he masters Jedi - like powers.
One possible plot could be that Jaune discovers he has a daughter in a very unexpected way. Maybe she shows up at Beacon Academy one day, and he has to figure out how she came to be. He then has to balance his duties as a Huntsman with being a father, all while protecting her from the various threats in the RWBY world.
Well, it could be that Raven takes Jaune on some sort of wacky adventure. Maybe she mistakes him for someone else at first and then they get into all kinds of comical situations as she tries to figure out what to do with him. For example, she might drag him along on a quest that he's completely unprepared for, and his bumbling attempts to keep up make for a really funny story.
Well, it could involve the character with the 'Si' (presumably self - insert) having to deal with Oz's complex backstory. Maybe they have to face the same challenges Oz did, like the fight against Salem. They might also have to handle the different relationships Oz had in the RWBY world.
In a 'RWBY Jaune Arc is a Monk' fanfic, the plot might start with Jaune feeling lost or out of place in his RWBY adventures. He then encounters a mysterious figure who leads him to a monastery. Once there, he embarks on a journey of self - discovery. He learns about meditation, martial arts specific to the RWBY world's monks, and spiritual enlightenment. As he progresses, he may find that his new monk - like abilities can be used to help his friends in ways he never imagined. For example, he could use his newfound mental focus to outwit enemies or his physical training to protect his team in a more unique way than before.
Well, one plot twist could be that Jaune discovers a hidden power within himself upon transferring. Maybe he finds out he has a special connection to an ancient relic at the new school.
One possible funny plot could be that the tribe mistakes Jaune for some sort of magical being. They dress him up in all kinds of outlandish tribal gear and make him perform 'rituals' that are really just silly dances. Jaune, being Jaune, tries to go along with it all in his bumbling way, thinking he can find a way to escape while making the tribe happy.
Another plotline might be that Jaune is framed for a crime he didn't commit and decides to disappear to clear his name. He goes into hiding and starts his own investigation, all while his friends in RWBY are trying to figure out what really happened and whether he's actually guilty or not.
Well, Ruby might be shocked at first. She's used to seeing Jaune as a friend and teammate, so imagining him as Satan would be a huge contrast to her view of him. She might be a bit scared too, depending on how the fanfiction portrays it.
In a fanfiction where Jaune is a Saiyan, his relationships with the other characters in RWBY could be really interesting. His Saiyan nature might make some characters view him with a mix of awe and fear. Ruby, for example, might be excited to see his new powers but also a bit worried about him losing control. His Saiyan pride could also lead to some friendly rivalries, like with Yang. Yang is already a strong fighter, and Jaune as a Saiyan could challenge her in new ways, leading to some epic battles and character development for both of them.