It's not okay. Ruby Rose is a real individual, and creating such fanfic goes against respecting her as a person. We should focus on positive and respectful ways to engage with her work or public image, like discussing her acting roles or contributions to the entertainment industry.
No, it is not appropriate. RWBY is a popular animated series with a large fan base that includes younger viewers. Writing such explicit fanfiction goes against the spirit of the show and can be considered inappropriate and unethical.
There are fanfictions that expand on the backstories of minor characters in Naruto. These can be really interesting as they give more depth to the Naruto universe. By focusing on these types of fanfictions, you can avoid any inappropriate or unethical content. Some might explore the history of a particular clan or how a character came to be in a certain village.
Ruby could be anyone. It might be a name given to a character in a specific story or just a name of a person in real life who likes to read stories in her own time.
The Pokémon special, Ruby, was a fictional story created by Japanese manga artist Hiroko Hanami in 1997. The story was about an elf named Ruby who was learning Pokémon knowledge and skills in a mysterious Pokémon training class. Ruby gradually became a powerful Pokémon Master and worked with his Pokémon companions to protect the world from the threat of evil forces.
Well, her sister Yang would definitely be one of the main characters. Yang would be very protective of Ruby and would try to help her in any way she could. Weiss would also be important. She might use her intelligence and Dust - related skills to assist Ruby. And Blake, with her stealth and combat skills, could be crucial in protecting Ruby and guiding her through difficult situations.
I don't know exactly who Ruby is without reading the story. But she is likely the main character, a person who has some kind of story related to reading in the street during her own time.