One interesting crossover could be Naruto's ninjutsu in the Warcraft universe. His shadow clone jutsu might be used in battles against the orcs or undead. For example, he could send a horde of clones to confuse the enemy forces. Another cool aspect could be Naruto's chakra system interacting with the magic in Warcraft. Maybe his chakra could be mistaken for a new form of magic, leading to all sorts of misunderstandings and alliances.
One possibility is that Naruto's unique ninja skills would make him a very powerful adventurer in WoW. His ability to use chakra could be translated into some kind of magic or special combat ability. For example, his Shadow Clone Jutsu could be used to confuse enemies or complete multiple quests simultaneously.
Ruby could be a potential ally. She is brave and has a strong sense of justice, just like Naruto. They could team up and use their unique abilities to fight against the Grimm. Another one could be Jaune. He is a bit of an underdog, and Naruto has a soft spot for those kinds of characters. He could help Jaune improve his skills.
Warcraft is a franchise that includes games, books, and other media. It features epic battles between different factions. For example, the Alliance and the Horde are two major groups in the Warcraft universe. They fight for resources, territory, and power.
Naruto would first have to adapt to the different magic system. Since he's used to chakra, understanding the arcane, fel, and nature magic in Warcraft would be a challenge. But he's a quick learner. He might start by observing the mages in the world. Also, he'd need to adapt to the new races. He'd probably be curious about the elves, dwarves, and orcs, and try to make friends with them using his friendly and outgoing nature.
In a fanfic where Naruto is sent to Haven, he might find himself in a very different environment compared to Konoha. He could encounter new types of magic or powers that are unique to Haven. Naruto's strong will and determination would likely lead him to adapt quickly and try to find a way to use his skills to help the people there. Maybe he would form new alliances and friendships with the inhabitants of Haven.
One interesting concept could be how Naruto's unique jutsu adapt to the Remnant world. For example, his Shadow Clone Jutsu might be used in new and creative ways during battles in Remnant. Maybe the clones could be used to distract Grimm while he goes for the real attack. Another concept could be Naruto's interaction with the characters in Remnant. His positive and determined attitude could inspire the often - troubled characters there.
The main antagonist could be a rogue ninja who has infiltrated the village's council. This ninja could be secretly manipulating things behind the scenes to get Naruto sent to prison. He might have a vendetta against Naruto for some past encounter or just see him as a threat to his own evil plans.
It could be that Naruto is sent to prison as part of a political move. There are some ninja clans within the village who are jealous of his popularity and influence. They conspire to get him out of the way by making it seem like he's a threat to the village's security. In prison, Naruto discovers a hidden conspiracy within the prison walls that is related to the outside political turmoil and he has to find a way to expose it while also getting himself released.
Naruto would probably try to avoid fighting at first. He'd want to understand why Tayuya is after him. He might say something like 'Hey, we don't have to fight! Let's talk this out!'