One interesting plotline could be a deeper exploration of the relationship between Ruby and Weiss. Maybe in the fanfiction, they face a new and powerful enemy together that forces them to rely on each other more than ever, strengthening their bond in ways not seen in the original series.
A possible plotline could also be a time - travel story within the Dark Rose fanfiction. Ruby travels back in time and has to change certain events to prevent a dark future. This would involve her interacting with past versions of her friends and enemies, and making difficult decisions that could change the course of the RWBY universe.
One interesting plotline could be the origin story of the Blood Rose in the RWBY universe. Maybe it's a weapon with a hidden power that the main character discovers.
Another could be a story where Lemon discovers an old diary or artifact that belonged to Summer Rose, and through it, she uncovers some long - forgotten secrets about Summer's past adventures and relationships. This could lead to Lemon getting involved in something much bigger than herself.
In 'rwby dark ruby fanfic', there might be a plotline where Ruby enters a parallel dark dimension. Here, she finds a distorted version of Remnant where all her friends are either gone or turned evil. She has to find a way to not only survive in this harsh new world but also find a way to restore the original Remnant. Along the way, she discovers secrets about her own powers and family that she never knew before, which are somehow linked to this dark dimension.
One common plotline could be the two characters dealing with the unexpected pregnancy while also facing challenges within their team or the world they live in. Maybe they have to hide it at first to avoid certain consequences.
Maybe a group of villains in the RWBY fanfiction are trying to summon Dark Naruto to use his power for their own evil purposes. The RWBY heroes find out about this plan and have to stop the summoning. Along the way, they meet some characters from the Naruto universe who are also trying to prevent the misuse of Dark Naruto's power.
A great plotline might involve the deaged characters interacting with their younger selves' memories. Weiss could be haunted by her family's expectations in a new light, as if seeing them for the first time all over again. This could lead to her making different choices and growing in a whole new direction.
One possible plotline could be a character sacrificing their own powers to save their friends from a powerful enemy. For example, Ruby might give up her Silver - eyed Warrior abilities to stop Salem's latest scheme and protect her team.
Well, in some rwby mugetsu fanfiction, there might be a plotline where the characters have to adapt to a new world that combines the two settings. They could struggle with understanding different cultures and magic systems. Maybe Weiss has to learn how to use her Glyphs in a world where the rules of magic are more like those in Mugetsu. This would lead to her character growth as she overcomes these challenges.
One possible plotline could be a character facing public shaming in the RWBY universe, perhaps due to a failed mission or a misjudgment. Another could involve a character being humiliated in a social setting within the school or among their team.
Another plotline could involve the reincarnated character trying to change the fates of the main RWBY characters. They might know about certain events that are going to happen in the future of the RWBY story and work towards preventing tragedies or enhancing the characters' growth in different ways. Maybe they try to save Pyrrha from her doomed fate at the hands of Cinder.