A possible plot twist is that Jaune uncovers a conspiracy at the new school. There could be a group within the school secretly working against the main goals of the institution, and Jaune gets caught in the middle of it. He has to decide whether to expose them or keep quiet to protect his new friends.
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.
He could befriend a shy but brilliant student who helps him with his studies at the new school. This student might be an outcast like Jaune in some ways and they bond over their shared experiences.
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 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.
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.
One possible plot twist could be that their marriage is part of a larger plan to infiltrate an enemy organization. They pretend to be a happily married couple but are actually gathering intel. Another could be that Neo's past catches up with her during the wedding, and they have to deal with old enemies trying to disrupt the celebration.
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.
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.
One possible plot could be Hermione feeling out of place at Hogwarts due to various reasons, like the constant danger she faces or the lack of certain academic opportunities. So she decides to transfer to Beauxbatons. There, she might struggle to adapt to the different culture and magic system. For example, Beauxbatons may have different spells and potions that she has to learn from scratch. Also, she could make new friends and enemies. Maybe there's a group of students who are jealous of her intelligence and try to undermine her.
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.