A great plot idea for a RWBY Summer writing fanfic is to explore Summer's relationship with a mysterious character. Maybe there was someone she met during a summer festival who had a connection to an ancient power. As she gets closer to this person, she discovers that there are dark forces at play trying to use this power for evil. Or you could write about Summer's attempt to break a summer - long curse that has been plaguing a small village.
You could write a plot where Summer embarks on a journey to find a rare summer - blooming flower that has special healing properties. Along the way, she teams up with other characters from RWBY. They face various challenges, like crossing a dangerous river during a summer storm or fighting off bandits who also want the flower. This plot would allow for a lot of character development and action, as well as exploring the beautiful landscapes of the RWBY world during summer.
One idea could be that Summer's brother has a unique semblance that he has to keep hidden from the enemy. For example, it could be a semblance related to time manipulation, which is extremely powerful but also very dangerous if misused. He might be on a journey to discover more about their family's past and the secrets it holds, which could be linked to the greater mysteries in the RWBY world.
To start a RWBY Summer writing fanfic, first think about the character of Summer. Consider her relationships, like with Ruby or her team. You could begin with a scene that showcases her strength or her kindness. For example, you might write about a time when she was on a mission during summer and had to face a tough Grimm. This would immediately draw the reader in and set the tone for the story.
A great plot could be centered around the Summer Maiden's relationships. For example, she might have a forbidden love with a character from the other side, like a member of Salem's faction. This would create a lot of internal conflict as she has to balance her feelings with her duty as a Maiden. Or perhaps she has a deep friendship with a character who is in danger, and she has to use her powers to save them from a great threat.
One idea could be a story where Pyrrha and Summer are brought back to life in an alternate reality. They then have to team up to face a new, powerful threat that is endangering their world. Another plot could involve a pre - RWBY story where Pyrrha and Summer meet during a training mission and learn from each other's skills.
Perhaps Si is transported back in time to when Summer was alive. Si then has the chance to interact with Summer directly. They could become friends and go on adventures together. Along the way, Si could learn valuable lessons from Summer and also change some small events that have a big impact on the future of the RWBY world.
One plot idea could be Adam trying to redeem himself through Ruby's influence. Ruby, with her kind heart, could see the good in Adam that he's long forgotten. Another could be a story where they team up to face a common enemy that neither could defeat alone. Maybe a powerful Grimm that has unique abilities.
Sure, there are RWBY Summer fanfics that are suitable for all audiences. Writers in the RWBY fandom often explore different aspects of the characters. For Summer, they might write about her adventures, her skills, or her role within the RWBY world. These fanfics can be a great way to expand on the character and the RWBY universe in a family - friendly manner. Some fanfic writers are more interested in character development and world - building rather than creating inappropriate content.
One idea could be Salem's reaction to the powers and technology in the Worm universe. Maybe she tries to use some of the parahuman abilities or advanced tech to further her own goals in the RWBY world.
One interesting plot idea for a RWBY fanfic is to focus on a character's struggle with their semblance going out of control. This could lead to all sorts of problems, from accidentally harming their friends to attracting hordes of Grimm. Another plot could be a tournament - style story where teams from different kingdoms come together, not just the main RWBY teams. There could be rivalries, unexpected alliances, and new friendships formed during the tournament. Also, a plot where the characters discover a hidden power within the Dust that could change the balance of power in Remnant.
One idea could be a choice where the characters have to decide whether to ally with a mysterious new group in Vale. This new group seems to have some unique powers and resources, but their motives are unclear. It could lead to different story arcs depending on the choice made.