One common theme is redemption. Ruby might go back in time to save someone who made a wrong choice in the original timeline, thus giving them a chance at redemption. Another theme is the butterfly effect. Her small actions in the past can lead to big changes in the future of Remnant.
One common theme is the exploration of family. Since Ruby travels back to a time related to her mother Summer, it often delves into their relationship and how Ruby discovers more about her family's past. For example, in many fics, Ruby might find out why Summer made certain choices.
A common theme is the corruption of Ruby's character. Time travel often serves as the catalyst for her transformation into an evil version of herself. Another theme is the alteration of the RWBY universe's timeline. As Ruby makes different choices in the past, it causes major changes in the present and future of the world.
Themes like adapting to new situations are quite common. Ruby and Winter are suddenly thrust into different time periods, and they have to figure out how to fit in. Another theme is the discovery of hidden truths. Maybe they find out secrets about their families or the origins of certain powers. And of course, there's the theme of heroism. They often have to be heroes in the past, facing threats that are different from what they're used to in their own time.
One common theme is the exploration of Ruby's new powers. Since she's the Time Maiden, there's a lot of focus on how she can manipulate time, like slowing it down or traveling through it.
The theme of meeting different versions of oneself is also popular. When Ruby travels through time, she may encounter past or future versions of herself. This can lead to interesting interactions, like learning from her future self or trying to correct the mistakes of her past self. It's a great way to explore character development over time.
One common theme is leadership. Ruby is a team leader in RWBY, and many fanfictions explore how she grows into that role, like dealing with difficult decisions and inspiring her teammates. For example, in some fanfictions, she has to lead her team through a very dangerous mission where every decision matters.
Another theme could be acceptance. How her friends and the people around her accept and support her. It might show the growth of relationships within the RWBY universe as they learn more about Ruby's autism. There could also be themes related to Ruby's special interests within the RWBY world, like her weapon or her combat skills, and how her autism influences those interests.
The exploration of their backstories together is also a theme. Writers may create scenarios where Ruby and Cinder's pasts are somehow intertwined, perhaps revealing secrets that change their relationship in the RWBY universe.
One common theme is self - discovery. Ruby often has to figure out who she is in the context of her new family or situation. For example, in many of these fanfictions, she might realize new strengths or weaknesses she didn't know she had.
One common theme could be Ruby facing some sort of emotional coldness or isolation. Maybe she's been through a tough event and has withdrawn from her friends.