At first, Sasuke would probably be very guarded. But Harry, being friendly, would try to break through that. Harry would show Sasuke around Hogwarts, and Sasuke might be a bit dismissive at first, thinking his ninja skills are superior. But as he sees the power of magic, he'd start to respect it. They would have conversations where Harry tries to understand Sasuke's past traumas, and Sasuke might be hesitant to open up. However, over time, they would bond, especially when facing a common enemy. Harry would use his quick thinking and magic, while Sasuke would use his combat skills.
One possible scenario in this fanfiction could be that Harry Potter and Sasuke are somehow transported to a shared magical realm. When they encounter a Boggart, Harry might see Voldemort at first, given his past traumas. Sasuke, on the other hand, could see Itachi. But as they realize they are in this together, they combine their magical and ninja skills to defeat the Boggart. Maybe Harry uses a Patronus charm while Sasuke uses his Sharingan to disorient the Boggart.
Perhaps a fanfiction where Sasuke discovers a Portkey in his world that leads him to Hogwarts. He has to adapt to the new magical environment and forms an unlikely friendship with Harry Potter. Together, they explore the secrets of both their worlds and use their combined skills to face challenges.
One idea could be a crossover where Sasuke is somehow transported to the Harry Potter universe. He could attend Hogwarts and his ninja skills might be mistaken for advanced magic. Maybe he gets sorted into Slytherin because of his ambitious nature.
Sasuke's adaptation would be a long process. He'd start by observing the daily lives of wizards. He'd notice how they use magic for simple tasks like lighting candles or cleaning. In contrast, in his past life, he'd use ninjutsu for such things. He'd have to get used to the fact that he can't just rely on his Sharingan all the time. He might attend classes at Hogwarts and learn about different spells. At the same time, he'd be constantly comparing the magic here to his ninja skills. As time goes on, he'd start to blend in more, using magic in his own unique way that combines his ninja - like thinking.
One common theme is the clash of cultures. Sasuke comes from a world of ninjas with its own set of values and skills, while Harry Potter's world has its own magical culture. Their interaction often explores how these two different cultures can either conflict or blend together.
It could be used as a plot device to bring characters from both universes together for a common mission. Say a powerful villain has hidden important items in both the Naruto and Harry Potter worlds, and the Portkey allows Harry and Sasuke to travel between the two to retrieve them all. They would have to rely on each other's unique skills to succeed.
Well, perhaps the plot could be that Harry discovers a hidden portal that leads to the Naruto universe. There, he meets Sasuke and becomes fascinated with his skills. He decides to learn from Sasuke and in the process, tries to combine magic with ninja techniques.
Well, perhaps Harry could find Sasuke in a strange magical realm that connects the Naruto world and the wizarding world. Harry, being the kind - hearted person he is, decides to take Sasuke under his wing. He could introduce Sasuke to Hogwarts, and Sasuke might be amazed by the magic there. He would learn spells instead of ninjutsu, and they could have adventures together fighting against dark wizards who might be interested in Sasuke's special powers.
One popular Sasuke - Harry Potter fanfic is 'The Wizarding World and the Ninja'. It combines the magic of the Harry Potter universe with the ninja skills from Sasuke's world in an interesting way.