Percy would need to learn how to be stealthy. He's used to fighting out in the open as a demigod, but as a ninja, he'd have to blend into the shadows. He could use his powers over water to create distractions or cover his movements, like making a mist to hide in.
Well, Percy would first have to adapt to the ninja code of conduct. He's used to the rules at Camp Half - Blood, but the ninja world has its own set of values. He'd need to learn about honor in a new way, and how to respect his superiors in the ninja hierarchy. Physically, he'd be training in new forms of combat that focus on speed and precision rather than brute force. His water - controlling ability could be used in unique ways, like creating diversions or hiding in water - based illusions. He'd also have to get used to the more secretive nature of the ninja lifestyle, always hiding in the shadows and being cautious about revealing his identity.
Naruto's ninja skills would have to adapt in several ways. His tracking skills, which he learned as a ninja, could be used to find lost demigods or track down powerful monsters. His ability to sense danger, which was related to his chakra sensing in the Naruto world, could be translated into a new form of danger - sensing in the Percy Jackson world. He could also use his ninja - style parkour skills to traverse the different terrains in the Greek mythology - based world, like climbing the sides of Mount Olympus or running across the rooftops of ancient Greek cities. And his skills in using ninja tools could be combined with the use of demigod weapons, creating a whole new combat style.
In a fanfiction, Percy's adaptation to Hogwarts would be a bumpy but interesting ride. He'd be constantly comparing Hogwarts to Camp Half - Blood in his head. At first, he might struggle with the lack of open combat training like he has at camp. But he'd discover that the dueling club at Hogwarts can be a substitute. He'd have to adapt to the different social hierarchies too. The pure - blood, half - blood, and Muggle - born concepts would be new to him. He'd probably see similarities to the god - parent, demigod, and mortal distinctions in his world. His loyalty to his friends from Camp Half - Blood would remain strong, but he'd gradually develop new loyalties at Hogwarts as well.
He'd have to learn the new rules. Percy is used to the Greek pantheon's way of doing things, but in Asgard, it's a whole different ballgame. He'd probably start by observing how the Norse gods and their followers interact. And he might use his charm, which has served him well in the Greek world, to make friends among the Norse.
Percy would likely first be shocked by the cold in Skyrim. But he'd quickly adapt his powers. He could use his control over water to deal with the snow and ice, maybe even creating steam to warm himself up. His fighting skills with a sword from his demigod training would be useful against the bandits and monsters in Skyrim.
He'd probably have a hard time at first. The weather in Forks is very different from what he's used to. Also, the small - town atmosphere might be a bit suffocating for someone who's used to the more adventurous life of a demigod. But he'd adapt by using his skills. His athleticism from all his training as a demigod would make him stand out in school sports, which could be a way for him to make friends.
Percy would probably have to adapt to the different cultural norms. For instance, the Soviet Union had a very different social and political structure compared to what Percy is used to. He might initially struggle with the more collective mindset. However, his ability to adapt quickly, which he has developed from his various adventures in the Percy Jackson series, would help him. He could start by learning the Soviet language, which would be essential for communication.
In this fanfiction scenario, Percy's adaptation to Hogwarts would be a complex process. He'd first have to deal with the cultural shock of a new magical world. The Hogwarts houses would be different from the cabins at Camp Half - Blood. He'd need to figure out which house he belongs in. His skills with a sword might not be as useful as in his own world, but he could learn to use magic to enhance his combat abilities. Also, he'd have to make new friends and enemies, and learn how to navigate the social politics of Hogwarts while still holding on to his own identity as a demigod.
Percy would probably have a hard time at first. He's used to the world of demigods and Greek mythology. But he's also adaptable. He'd learn about the vampires and werewolves in Mystic Falls. Maybe he'd start by making friends with some of the more normal humans in town to get a feel for the place.
He'd probably adapt slowly. At first, he'd be confused by the normal school rules. But he'd use his street - smart skills. He might use his swimming abilities to shine in the school's swim team if there is one. And he'd rely on Annabeth to explain things like how to use a locker or where the cafeteria is.