Maybe the plot could revolve around their combined combat styles. Naruto is known for his flashy and powerful ninjutsu, while Blake has her unique swordsmanship and shadow clones in RWBY. They could develop new fighting techniques together, like Naruto teaching Blake some of his chakra - based moves and Blake showing Naruto how to better use stealth in combat.
The fanfic might explore Blake's unique abilities and how they play out in the Naruto setting. Maybe there's a crossover of powers and teamwork.
The rest of Team RWBY would definitely be influenced. Naruto's loyalty to his friends, which is a big part of his character, would set an example for the whole team. He could also be a mediator in any conflicts within the team. For example, if Weiss and Blake have an argument, Naruto could use his experience with Sasuke and his other friends to help them resolve their differences. His presence would also attract the attention of other characters in the RWBY world, like the professors at Beacon Academy, who would be curious about his abilities.
One possible story could be about Naruto finding himself in the world of Blake Belladonna. He might use his ninja skills to help Blake and her friends in their fight against the Grimm. Naruto's positive attitude and never - give - up spirit could inspire Blake to be more confident in her own abilities.
One possibility could be that the RWBY characters are transferred to Earth and have to adapt to our modern society. They might be shocked by the lack of Grimm, but also fascinated by our technology and culture.
One possible plot could be that Naruto and Sasuke are sent to the RWBY world by some unknown force. In this world, they are considered as gods due to their immense power. They then meet the RWBY team and decide to help them fight against the Grimm. Along the way, their brotherly bond is tested as they face different challenges and make decisions that could affect both the RWBY world and their relationship.
It changes it quite a bit. Firstly, it brings in Naruto's unique abilities like chakra control and jutsu into the RWBY universe. This could mean new forms of combat and power - ups for Blake. Also, it might change the way the other RWBY characters view Blake, as she now has this connection to an outsider from a completely different world. It could also introduce new story arcs related to Naruto's past and how it might affect Blake and the RWBY world in general.
One possibility is that friendly Grimm could completely change the dynamic of the RWBY world. Instead of being pure threats, they might become allies or at least neutral entities. This could lead to new storylines where characters have to re - evaluate their understanding of the Grimm. For example, Ruby might be initially hesitant to trust a friendly Grimm but then realizes it can help in a certain situation.
I'm not sure of a specific one named 'Blake Mark RWBY fanfic' with a truly unique plot off the top of my head. But a fanfic that could be unique might be one where Mark has a special power that he uses to help Blake in a completely unexpected way. For example, he might be able to communicate with Grimm in a certain sense and use that to their advantage in battles.
Well, a great plot might be that Blake discovers a hidden power within herself. This power could attract both friends and foes alike. She might have to deal with the jealousy of some of her comrades while also trying to master this new ability. Or perhaps she gets caught in a political intrigue between different kingdoms in Remnant, and her actions as a Futa character could bring a new perspective to the story.
The fanfiction of Naruto, Sparda, and RWBY also offers a chance to play with different settings. RWBY's post - apocalyptic - like world, Naruto's ninja villages, and the demon - infested world of Sparda. By merging these settings, authors can create entirely new and immersive environments for their stories, full of adventure and mystery.