One possible plot could be Ruby Rose trying to understand Salem's motives. Maybe Ruby, with her pure heart, believes there's a chance to redeem Salem. She could engage in a series of intense conversations with Salem, where Ruby tries to appeal to any good that might still be in her. This would be a great exploration of the themes of good versus evil and redemption.
A third plot could be a team - up of sorts. Salem, for some reason, needs Ruby's help. It could be related to a common enemy or a threat that Salem realizes she can't handle alone. This forces them to work together, and during this time, they learn more about each other's powers and pasts, leading to a complex relationship between the two characters.
Another plot could involve a time - travel scenario. Ruby gets sent back in time and has to deal with a younger Salem. She might try to prevent Salem from becoming the powerful and malevolent force she is in the present. This would create a lot of interesting dynamics as Ruby has to navigate an unfamiliar time period and deal with a Salem who is not yet fully corrupted.
One interesting fanfiction could be where Ruby has to face Salem alone in a battle of wits and strength. In this story, Ruby might discover a new power within herself to counter Salem's dark magic.
One idea could be Ruby trying to understand Salem's motives beyond just destruction. Maybe she discovers that Salem has a tragic past that led her to this path and Ruby attempts to find a way to redeem her. Another plot could involve Salem targeting Ruby specifically because of her silver - eyed powers and Ruby having to outwit Salem in a series of battles.
Some fanfictions might have a plot where Ruby's blindness is a temporary state caused by some dark magic or a powerful enemy's attack. During this time, she has to quickly learn to function without her sight. Her friends, like Weiss, Blake, and Yang, would be by her side, each using their own skills to support her. Weiss could use her glyphs to create paths or barriers that Ruby can sense, Blake could use her stealth to scout ahead and warn Ruby of any danger, and Yang could be her physical protector, ready to fight off any threats that come their way.
One possible plot could be Ruby trying to prove her innocence. Maybe she was framed for something she didn't do. For example, a powerful relic goes missing and Ruby is wrongly accused. She then has to embark on a journey outside of the school to find the real culprit and clear her name.
One interesting plot could be Ruby sleepwalking into a mysterious area of Beacon Academy that she's never seen before. Maybe it's an old, forgotten part filled with secrets. Another plot could involve her sleepwalking during a Grimm attack and somehow unconsciously using her powers in a unique way to fend them off. For example, her scythe might move on its own to block attacks while she's asleep.
You should also consider their backstories. Ruby's upbringing in a world of Huntsmen and Huntresses, and Salem's long history of being a powerful and feared being. Their different experiences shape how they view the world and each other. When writing their interactions, these backstories can be used to create tension or moments of understanding. For instance, Ruby might mention her family and how they taught her about the value of life, which could make Salem reflect on her own long - lost relationships.
There are fanfictions where Scarlet Rose and Ruby Rose are transported to an alternate dimension. In this dimension, they have to find a way back while also dealing with the different rules and threats there. It could involve them meeting alternate versions of their friends and foes.
Perhaps Salem starts to change her ways because of her love for Ruby. She might begin to question her long - held beliefs and actions, which could lead to a lot of drama and conflict within the story. For example, her followers might not understand her new attitude.
In the fanfiction, a possible plot could be that Si - as Ruby - discovers some long - hidden secrets about Ruby's family or the history of Remnant. This discovery could lead to a whole new set of adventures and challenges. For example, they might find a connection between Ruby's family and an ancient power that could change the fate of Remnant.
One interesting plot could be Ruby and Mercury teaming up against a common enemy. Maybe a new Grimm type that they have to figure out how to defeat together. Their different fighting styles, Ruby's speed and scythe - wielding skills combined with Mercury's acrobatic and martial - arts - based combat could make for some exciting action scenes.