I'm not aware of any official or appropriate fanfic with such a theme. RWBY is a popular series and while there are many fan - made works, this kind of content might not be in line with the general positive and respectful nature of the fandom. It's also important to note that such a topic can be considered inappropriate and not in the spirit of the original work.
Another theme is discovery. Ruby discovers new things about herself, her powers, or the world around her through her interactions with Kali. And Kali might also discover new aspects of the younger generation's way of thinking and fighting through Ruby. This mutual discovery helps to drive the plot in many of these fanfictions.
One positive aspect is her portrayal as a strong female character. In fanfics, she can be shown as a force to be reckoned with, using her skills and knowledge to help others. For example, she might use her combat abilities to protect the weak or her wisdom to guide younger characters.
Some great topics could be Kali Belladonna's adventures before the events of the main RWBY story. For example, her time as a young huntress - in - training, facing different Grimm and learning combat techniques. Another topic could be her relationship with other members of the Faunus community and how she worked towards equality for the Faunus within the world of RWBY.
One common theme is family. Kali is Blake's mother, so fanfictions might explore their relationship more deeply. Another could be adventure, perhaps Kali joining the girls on a mission. Love and friendship are also prevalent, showing Kali interacting with other characters in a more affectionate way.
One interesting aspect could be the exploration of Kali's character in new and unique situations within the RWBY universe. For example, a story might focus on Kali's relationships with other characters in a more in - depth way. Maybe it shows how she interacts with her family or friends during a difficult time in Vale. Another idea could be her taking on a new role in the fight against the Grimm, using her skills in a different way than we've seen before.
One common theme could be the clash of different cultures. Naruto comes from a ninja - based culture, while RWBY has its own unique world with different rules. When it comes to Kali, her character might bring in elements of family and loyalty from RWBY. So, the cultural differences and how the characters overcome them can be a theme.
One interesting 'rwby ruby and kali fanfiction' could be those that explore their relationship in a different light, like a story where Kali teaches Ruby some ancient combat techniques. Another could be a story focusing on their adventure together in a mysterious land.
One popular 'rwby kali and ruby fanfiction' is 'The Bond Between Them'. It explores a unique friendship between Kali and Ruby. It has great character development and some really interesting plot twists.
First, you need to understand the personalities of Ruby and Kali. Ruby is young, energetic, and has a strong sense of justice. Kali is more experienced and has a motherly side. Start with an interesting plot idea, like them going on a quest together.