Well, he might use his magic in ways that would shock the shinobi world. Maybe he could combine spells with ninjutsu to create some really powerful attacks.
He might use his magic skills to stand out. For example, his ability to perform spells could be seen as a unique talent in Konoha. His shop could become a place where ninjas are curious to visit and learn about different kinds of magic.
The kids in Konoha like Naruto would probably be very excited. They love new and different things, and Harry with his magic would be really cool to them.
The plot could involve Harry finding out that there are magical elements in Konoha that are different from what he knows in Hogwarts. He could be introduced to chakra and start to study it alongside his own magic. Maybe he gets involved in the Chunin Exams, using his magic to compete in a unique way. He might also encounter some dark wizards who have made their way to Konoha, leading to an epic battle to protect the village.
He'd have to adapt his magic to fit in. Maybe he'd learn to use it more discreetly, as ninjas are all about stealth. He'd also need to get used to the ninja hierarchy and respect the local rules.
Well, he'd probably be really confused at first. Konoha has a very different culture and magic system compared to the wizarding world he's from. He might try to use his wand, but it might not work as expected. And he'd have to get used to the whole ninja thing, like stealth and hand - to - hand combat.
Obviously, Harry Potter would be one of the main characters. Naruto Uzumaki would also be a key figure as he is the central character in Konoha. Hermione Granger could also be there, using her intelligence to figure out the new world she's in. And Sasuke Uchiha might play a role, perhaps being initially skeptical of Harry but later becoming his ally.
One possibility is that Harry, with his magical skills, could introduce a whole new type of magic to Konoha. Maybe he'd help the ninjas with some of their toughest problems using spells like 'Accio' to retrieve lost items during missions. He could also learn about chakra and combine it with his magic in unexpected ways.
Well, he might introduce magic from the wizarding world to the ninjas. For example, he could show them spells like Wingardium Leviosa and they might be amazed at how different it is from their chakra - based jutsu.
Her magic would probably be seen as something very strange and powerful. The ninja in Konoha are used to chakra - based abilities, so her spells and potions would be completely new to them. Some might be in awe of her magic, while others might be a bit scared, thinking it could be a threat.