One interesting storyline could be a character from RWBY getting injured during a battle and having to recover in the hospital. There, they might meet new allies or face unexpected challenges within the hospital setting. For example, dealing with a shortage of medical supplies due to Grimm attacks on supply routes.
One possible plot could be that a character gets seriously injured during a battle and is rushed to the hospital. While in the hospital, they have to deal with their own fears and insecurities as they recover. Meanwhile, their teammates visit them and there are some heart - to - heart conversations that strengthen their bonds.
One idea could be an OC who is a healer in the hospital and has to deal with the unique injuries of RWBY characters. For example, they might struggle to heal a Grimm - inflicted wound that has some sort of dark magic attached to it. Another idea is an OC that discovers a new type of Dust - based medicine in the hospital, which could revolutionize the way injuries are treated in the RWBY world. And also, an OC who is a patient in the hospital and has amnesia, and throughout the fanfiction, they slowly regain their memories and realize they have a special connection to the RWBY universe.
One interesting storyline could be a fanfiction where the characters have to face an ancient evil that was long forgotten in the RWBY universe. This evil could be something that predates the Grimm and has powers that are completely different from what they are used to dealing with.
Some fanfictions might have a storyline where the characters swap personalities. Yang could become super shy and reserved, while Blake turns into a hyper - active and overly talkative character. This would lead to all sorts of comical situations as they try to adapt to their new personalities while still facing the challenges of the RWBY world. The team would have to figure out how to work together in this new, wacky dynamic.
One interesting storyline could be a crossover where Naruto's ninjutsu skills are combined with Raven's abilities in the RWBY universe. For example, Naruto might teach some of the RWBY characters about chakra control, and in return, they show him how to use Dust. Another could be a story where Raven and Naruto have to team up to face a common enemy that threatens both their worlds. They could learn from each other's fighting styles and develop new strategies.
One interesting storyline could be the RWBY characters having to fight zombies in a post - apocalyptic Vale. They'd use their unique weapons and semblances against the hordes. For example, Ruby's speed could help her quickly dispatch zombies while Weiss could use her glyphs for protection and offense.
Another possible storyline is that an Earth Soldier is actually a long - lost relative of a RWBY character. This connection could bring out new character developments as they explore their family ties while also dealing with the threats in the RWBY world. There could be a struggle between the Earth Soldier's values and the more fantastical and dangerous world of RWBY.
One interesting storyline could be Neptune and Weiss going on a mission together. They might start off bickering as they have different personalities, but as the mission progresses, they learn to rely on each other's strengths. Neptune's laid - back nature could balance out Weiss's more uptight attitude. Another could be a story where Neptune gets injured and Weiss has to take care of him, leading to a deeper emotional connection between them. And there could also be a fanfiction where they both discover a new type of Grimm and have to figure out how to defeat it together, during which their relationship blossoms.
One interesting storyline could be Naruto characters being transported to the RWBY world. For example, Naruto himself could end up at Beacon Academy. He might struggle at first to understand the concept of Dust and how the Grimm work. But his skills in ninjutsu could be a great asset in fighting the Grimm. Another storyline could involve RWBY characters going to the Naruto world. Ruby, with her scythe skills, could learn some ninja techniques and use them in combination with her own fighting style. Weiss might be intrigued by the different forms of chakra control and try to incorporate it into her Glyph magic.
Another storyline could involve them using the group chat to plan a surprise party for one of their friends at Beacon Academy. They'd discuss decorations, food, and how to keep it a secret. There could be some comical moments when things almost go wrong during the planning process.