A third storyline could be centered around a mysterious character who joins the team temporarily. This character has a hidden agenda that the team gradually uncovers. It could lead to a lot of suspense and action as the team tries to figure out whether to trust this new addition or not.
One interesting storyline could be the team's encounter with a powerful new Grimm. They might struggle at first but then find a unique way to defeat it, like using a combination of their individual skills in a new way.
A storyline could be that the RWBY team participates in a friendly tournament against other teams from different academies. They train hard and show off their unique fighting styles during the matches. It's a great opportunity for character development as they face different opponents and learn from each other.
One interesting storyline could be Hinata's struggle to fit in with the more boisterous members of Team 7. Since she's generally quiet and shy, it would be fascinating to see how she copes with Naruto's hyperactivity and Sasuke's brooding. Another could be a love triangle situation where Hinata has feelings for Naruto, but there are some misunderstandings due to Sakura also being in the mix. Maybe in the fanfiction, Hinata discovers a new powerful jutsu and has to train with Team 7 to master it, which would lead to a lot of character development and bonding within the team.
Some Team RWBY fanfictions revolve around shipping. Like a story about Ruby and Weiss's relationship developing into something more than just friendship. It could explore how they support each other during tough battles and how their different personalities complement each other in unexpected ways.
There could be a 'team 10 rwby fanfiction' where they participate in a grand tournament. Each member of the team showcases their special abilities and they learn to work together even better as they face tough opponents from different academies. It would be full of action - from Ruby's scythe - slashing moves to Weiss's ice magic and the rest of the team's unique skills.
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 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 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.
One interesting RWBY Team RWBY fanfiction could be those that explore their training days in more detail. For example, a fanfic might show how they overcame a particularly difficult training obstacle together. Another type could be fanfictions that focus on their relationships outside of combat, like how they celebrate birthdays or holidays as a team.
Well, a plot might involve Team RWBY traveling back to the time when the first Huntsmen and Huntresses were being trained. They could get involved in the early development of combat techniques and weaponry. Maybe they end up influencing the way things are taught, for instance, introducing some of their more modern strategies. Or perhaps they go back to a time when a powerful relic was first discovered and have to protect it from falling into the wrong hands, which could change the entire future of Remnant.