Perhaps the fanfic focuses on Ruby becoming Red as a result of some sort of experiment gone wrong. She has to then deal with the consequences of this new form, like being hunted by the people who conducted the experiment. Her friends would have to help her hide and figure out a way to reverse the transformation, if that's what she wants.
One possible plot twist could be that Ruby's transformation into 'Red' gives her new and unexpected powers. Maybe she can now manipulate fire in a way she couldn't before. This would change the dynamics of her battles and how she interacts with her team. Another could be that this new form comes with a different personality. She might be more aggressive or confident, which could lead to some clashes with her friends who are used to the old Ruby.
I'm not entirely sure as there could be many different interpretations in a fanfic. It might be about Ruby in the RWBY universe undergoing some sort of transformation that turns her red. Maybe it's related to a new power she acquires that has a red - themed manifestation, or it could be a symbolic change within the story's plot.
There are countless fanfic writers out there creating content for RWBY, and the 'rwby ruby becomes red fanfic' could be the work of an amateur or a more well - known fanfic author within the community. It's possible to search for it on fanfic platforms, but even then, the author might not be easily identifiable if they use a pseudonym or if the fanfic is not widely known outside of a small group.
One plot idea could be that Si is a new student at Beacon Academy. They are in awe of Ruby and her skills. So, they start to follow Ruby around to learn from her. Along the way, they get involved in Ruby's adventures against the Grimm, and their own abilities start to develop as they face various challenges side by side with Ruby.
Well, it could be about Ruby discovering her Saiyan powers. Maybe she starts to show super strength and speed like a Saiyan. She could use her scythe in new and powerful ways, inspired by Saiyan combat styles.
It could strain her relationships. Her friends might be a bit scared or confused by her new form. They may not know how to interact with this 'Red' Ruby at first. For example, Weiss might be more hesitant to trust her, thinking that this change could make Ruby unstable.
Well, one possible plot development could be that Ruby's new powers as the Spring Maiden would attract the attention of Salem. Salem would then send her minions to either capture Ruby or try to turn her to their side. Ruby, being Ruby, would resist and use her new powers in creative ways to fight back. Maybe she could use the Spring Maiden's powers to rejuvenate the land around her during battles, creating new obstacles for her enemies.
Well, one possibility is that Ruby has to face many challenges to become the Fall Maiden. Maybe she has to fight against other powerful foes who also want the power. She might struggle with the new responsibilities and powers that come with being the Fall Maiden.
One possible plot could be that Ruby accidentally stumbles upon an ancient relic that causes her to grow giant. She then has to figure out how to reverse the effect while still using her new size to fight off a sudden influx of powerful Grimm. Her friends in Team RWBY would be both amazed and a bit worried as they try to help her control her newfound strength.
Well, it could be about Ruby finding a magical cookie that gives her special powers. Maybe she has to protect this cookie from some Grimm that are attracted to its magic.
Well, it could be that Ruby has been through a tough battle and is feeling down. Her grandparents show up unexpectedly and give her a big, warm hug to comfort her and let her know she's not alone.