One possible adventure is that they get involved in a Triwizard Tournament - like event at Hogwarts. Naruto would be all in for the competition, seeing it as a great opportunity to prove himself. Sasuke would be calculating his every move to win. Gaara would be in it just to see what he can do. Along the way, they discover a plot by a group of rogue wizards to take over Hogwarts, and they have to use their unique abilities - Naruto's shadow clones, Sasuke's Sharingan, and Gaara's sand control - along with magic to stop them.
They could have all kinds of adventures. Maybe they would be sorted into different houses at Hogwarts. Naruto might end up in Gryffindor with his courage. Sasuke could be in Slytherin due to his ambition. And Gaara, perhaps Hufflepuff for his loyalty in his own way. They could team up to fight against dark wizards who are threatening Hogwarts, using their ninja skills combined with magic.
Naruto would be very friendly and outgoing, quickly making friends with many Hogwarts students. He'd be eager to share his ninja stories and learn about magic from them. Sasuke would be more aloof at first. He might only interact with students who he sees as strong or useful. Gaara would be a bit of an enigma. Some students might be intimidated by him, but those who get to know him would find his quiet strength appealing.
Well, one possible plot could be that Naruto and Sasuke are somehow transported to the wizarding world. Naruto might be excited to learn new magic skills and make friends at Hogwarts. Sasuke, on the other hand, would be more interested in the power aspect of magic. They could get sorted into different houses, like Naruto into Gryffindor for his bravery and Sasuke into Slytherin perhaps because of his ambition. And then they have to deal with the typical Hogwarts problems like exams, dealing with bullies, and also the threat of the Dark Arts. Maybe they would find a way to combine their ninja skills with magic to defeat a common enemy.
In fanfiction, they might embark on a journey to find the origin of chakra. This would take them to far - off places, facing various challenges like harsh terrains and powerful beasts. Along the way, they would meet different people with unique chakra - related abilities and learn more about the essence of being a ninja.
They could go on an adventure to find a rare and powerful jutsu. Naruto would be eager to learn it, Sasuke would see it as a way to increase his power, and Shikamaru would be dragged along reluctantly at first. But during the search, they discover that the jutsu has a dark side that they must decide whether to use or destroy.
Well, Naruto would be excited about all the new magic things at Hogwarts. He'd want to make friends right away and might try to use his chakra in the magic classes, which could lead to some interesting and perhaps chaotic situations. Gaara, on the other hand, would be more reserved. He might find the Forbidden Forest interesting as it has a similar sense of mystery to his own desert back home. They both could have a big impact on the house rivalries at Hogwarts.
They could go on a mission to a far - off land filled with strange creatures. Naruto's enthusiasm, Sasuke's power, and Hinata's gentle yet strong presence would make for an interesting dynamic. They might face a powerful enemy that requires all of their skills combined to defeat.
They could have many adventures. For example, they might be sent on a top - secret mission to infiltrate an enemy stronghold. Naruto's ability to make friends and his never - give - up attitude could help them gain allies within the enemy ranks, while Sasuke's sharp skills and strategic mind would be crucial for planning their every move.
They could have all sorts of adventures. Maybe they'd get sorted into different houses and have to deal with the rivalries that come with that. Percy might use his water - controlling abilities in the Hogwarts' lake, and Thalia could use her lightning powers during a stormy Quidditch match. Nico could explore the Hogwarts' underground secrets, using his underworld - related skills to uncover hidden chambers.
Maybe they embark on an adventure to help a small, oppressed village. They use their combined skills to overthrow the tyrant ruling the village and then stay for a while to help rebuild it. During this time, they learn about different ways of life and make new friends. This adventure would strengthen their bond and also their reputations as great shinobi.
Naruto would adapt by being his usual enthusiastic self. He would be all over the place, asking questions, and getting into adventures. He might use his ninja agility to his advantage in things like Quidditch, even if he doesn't fully understand the game at first. Sasuke would be more cautious. He would study the magic system intently, comparing it to his ninja knowledge. He might have a hard time adjusting to the more laid - back atmosphere at Hogwarts compared to the intense ninja training environment he's used to. But as he starts to master some magic, he would gain confidence and start to feel more at home.