One interesting plot idea could be a crossover where Naruto characters end up in the Nura world. They could team up with the Nura clan to fight a common enemy that threatens both their realms. For example, an ancient evil that can manipulate chakra and yokai energy.
Rikuo Nura is a great character to write about. His dual nature as a human during the day and a yokai leader at night provides a lot of room for character development. You can explore his struggles to balance these two identities and how he deals with the expectations of both the human and yokai worlds.
The complex hierarchy within the yokai clans can be a great aspect to explore. You could write about power struggles, alliances, and betrayals among different levels of yokai. For instance, a lower - ranked yokai trying to rise in the ranks by outsmarting the higher - ups.
One great fanfiction could be about the yokai clans coming together to face a common threat not shown in the original series. It might focus on the relationships between different yokai characters and how they overcome their differences to fight for the safety of their world.
One possible plot could be that Harry Potter somehow gets transported to the world of the Nura Clan. He might initially be confused by the yokai and their ways. But with his magical skills, he could help the Nura Clan in their battles against other dark forces. For example, he could use his Patronus to fend off some particularly menacing yokai threats.
Harry and Rikuo could start off as cautious around each other. Harry, not used to yokai, and Rikuo, not knowing much about wizards. But as they face common enemies, they would start to trust and rely on each other. Harry could teach Rikuo some basic spells, while Rikuo could show Harry how to use his yokai powers more effectively in combat situations.
It could be about the rise of the Kitsune clan within the Naruto universe. Maybe it focuses on their unique abilities, their history, and how they gain power and influence over time.
There could be a young and talented Kitsune ninja who is determined to revive the glory of his clan. He would be one of the main characters. And perhaps there are also some characters from other clans who interact with the Kitsune clan members, either as friends or foes. For instance, a Naruto - like character from a different clan who becomes an ally of the Kitsune clan during their rise.
One common theme is the crossover of two different worlds. The Naruto universe with its ninjas, jutsus, and village politics, and the Yokai Watch universe with its various yokai. Writers often explore how these two different elements can co - exist and interact.
One possible plot could be that Naruto, during one of his adventures, stumbles upon a hidden yokai realm. He becomes fascinated by the yokai's unique powers and cultures. He then starts to study them, trying to incorporate some of their abilities into his own jutsu. For example, he might learn how yokai can transform and use that knowledge to create a new form of shadow clone technique that can also transform into different things like yokai do.