Well, in a fanfiction world, it could be possible through some creative storytelling. Maybe there's some kind of multiverse concept where the Naruto universe and the world of Cinder somehow collide. The author might create a backstory where their parents are connected in a very unexpected way. For example, perhaps a powerful wizard or entity has the ability to cross different fictional realms and unites their families for some grand, overarching plot purpose.
The dynamic could be complex. Naruto's ninja skills and his ability to make friends and form alliances could greatly benefit Cinder in her own world. He could teach her about loyalty and perseverance. Cinder, with her own set of skills and knowledge, might also introduce Naruto to new concepts in her world. There could be some clashes too, as Naruto's values of friendship and hard work might conflict with Cinder's more self - serving tendencies at times. But overall, their relationship would probably be one of growth and mutual influence as they learn from each other.
Perhaps in a crossover fanfiction, there's a magical grocery store that exists between their two worlds. Naruto and Cinder both end up there by accident. Naruto is excited to try new things and Cinder is more cautious. They could form an unlikely alliance as they deal with the strange storekeeper who has his own motives for bringing them together.
One idea could be a crossover where Cinder somehow gets transported to the Naruto universe. She might initially try to use her powers to gain control, but then realizes she has to adapt to the new chakra - based powers. Meanwhile, RWBY characters could also end up in the Naruto world in search of Cinder and end up forming unexpected alliances with Naruto and his friends.
She could gain new powers or abilities. In the Naruto universe, there are many different forms of power. Maybe she could learn some basic ninjutsu or even develop a new form of her Maiden powers by combining it with chakra. This would not only change her combat capabilities but also her character as she becomes more powerful and has to handle this newfound strength in a different way compared to RWBY.
Well, in naruto and cinder lemon fanfiction, a frequent theme is the exploration of identity. Naruto has his own journey of self - discovery in his original story, and Cinder also has her own complex identity. When combined in fanfiction, the authors often delve into how their identities might change or be redefined in the context of their interaction. Additionally, the theme of redemption can also be present. If Cinder has done some wrong in her story, Naruto's influence might lead to a path of redemption for her. Also, the idea of teamwork across different universes can be a common theme, as they might have to work together to face a common threat.
Cinder might become more adaptable. In the RWBY world, she is used to a certain set of rules and powers. But in the Halo universe, she has to quickly learn new things. So she could become more open - minded about different ways of fighting and surviving.
Fanfiction often takes characters and gives them new relationships. Regarding Naruto being Anko's brother, it depends on the specific fanfiction. Some authors might see an interesting plot point in making them siblings. For example, they could write a story where Naruto's positive attitude affects Anko in a new way because of their brother - sister bond. Or perhaps they explore how their shared heritage (if fabricated in the fanfic) influences their ninja paths. But it's important to note that this is not the case in the original Naruto anime and manga.
It could be an unknown brother that was kept secret all this time. Maybe he was hidden away by some enemy of the village and trained to be a powerful adversary for Naruto.
Perhaps Naruto's brother could be a long - lost relative from a far - flung part of the ninja world. He could have been separated from Naruto when they were young due to a war or some political intrigue in the ninja clans.