Well, Juvia's water magic could be quite interesting in the Naruto world. Her ability to control water could be seen as a unique form of ninjutsu. Maybe she could team up with some water - style ninjas and learn from each other. For example, she could show them her more creative uses of water like creating large water animals, while they could teach her about chakra control in water - based techniques.
Well, if female Harry were in the Naruto clan era, her magic could potentially disrupt the existing power balance. For example, her ability to apparate could be a huge advantage in battle or for quick escapes, something not seen in the ninja world. Also, her spells like 'Expelliarmus' could disarm ninjas of their weapons in an unexpected way. It would be really interesting to see how the ninja clans would react to such new and foreign powers.
Deadpool would likely be a very chaotic element in the Naruto world. In a fanfic, he might arrive through a portal that was opened accidentally. His combat style would be completely different from what the ninjas are used to. He doesn't really have a set of jutsu like the ninjas, but his acrobatic fighting and use of guns and swords would be a novelty. He could form an unlikely friendship with Naruto. Naruto would be intrigued by Deadpool's immortality and try to understand it, while Deadpool would be interested in Naruto's chakra and the whole concept of ninjutsu.
He could be a new type of hero. Maybe he starts as an unknown entity and quickly rises in power and reputation. His unique jutsu like the Sharingan (if he somehow acquired it in the crossover) would make him stand out. He could join forces with the Avengers and teach them new combat techniques based on his ninja skills.
Blake's abilities, such as her acrobatic skills and her ability to use shadows, are quite different from the typical ninja abilities in Naruto. While ninjas in Naruto use chakra for jutsu like fireball jutsu or clone jutsu, Blake's skills are more physical and stealth - based. However, her shadow - like abilities could potentially be related to some of the more esoteric ninja techniques in the Naruto world that deal with illusions or stealth.
The reaction would be one of shock. Naruto is a well - known figure in the ninja world, and many see him as a symbol of hope. His friends like Sakura and Sasuke would be devastated. Sakura, who has known Naruto for a long time, would likely be in disbelief and filled with anger towards Tsunade. Sasuke, depending on his state in the fanfic, might seek revenge.
His friends could become his advisors. For instance, Sasuke with his sharp intellect could help Naruto in making strategic decisions regarding national security. Sakura, as a skilled medic, could set up a new medical system for the people. And Shikamaru, being a brilliant tactician, could assist in diplomatic negotiations.
His ninja powers could change the sports world. Imagine Naruto competing in the Olympics with his super - speed. He could break all kinds of records. Also, his ability to create shadow clones could revolutionize the workforce. Many jobs could be done much faster with clones helping out.
CC could potentially be quite powerful. If we consider her abilities from her original context, she might be on a similar level to some of the stronger jonin in the Naruto world. For example, her ability to analyze and adapt quickly could give her an edge in combat.
In a fanfic, Fem Naruto could be a part of a secret organization in the Highschool DxD world. This organization could be focused on maintaining the balance between the different supernatural forces. She would bring her ninja training and knowledge, which includes things like espionage, combat tactics, and survival skills. Her presence would disrupt the status quo and lead to new alliances and rivalries as different characters react to her unique abilities and approach to problems.
He could fit in as a special guest lecturer. His knowledge of different magics would make his classes very popular. Students would be eager to learn from him, especially about his adventures in Middle - earth.