Another idea is that Kaneki is brought to the Naruto world by Orochimaru. Orochimaru, being interested in Kaneki's unique physiology, wants to study him. Kaneki has to escape from Orochimaru's clutches and teams up with Naruto and his friends. Along the way, they discover that there are some dark secrets in the Naruto world that are related to Kaneki's past in a strange, unexpected way.
One interesting plot idea could be that Fem Naruto, with her ninja skills, enters the Twilight world. She might get involved in the vampire - werewolf conflict. For example, her ability to sense danger could be a great asset. Another idea is a love triangle between Fem Naruto, Edward, and Jacob. Her strong - willed nature would add a new dynamic to the relationship.
One plot that I find fascinating is when a dark force is threatening both the Naruto world and the Tokyo Ghoul world simultaneously. Naruto and Kaneki are the only ones aware of this threat at first. They have to travel between the two worlds, gathering allies and learning about each other's cultures and abilities along the way. This plot allows for a deep exploration of both universes and the characters within them. It's not just about the action but also about the relationships that form between the characters from different worlds.
One interesting plot idea could be Naruto's chakra system interacting with magic in the Harry Potter world. For example, his ability to use shadow clones might be seen as a form of magic by the wizards. Another idea could be Naruto being sorted into a Hogwarts house, perhaps Gryffindor because of his courage. Or maybe he could teach the Hogwarts students some of his ninja skills in a special class.
One possible scenario in a Naruto - Kaneki fanfiction could be that Kaneki somehow ends up in the Naruto world. Maybe through a strange portal or some sort of jutsu gone wrong. He might initially struggle to adapt to the different environment and the presence of chakra. But his own unique kagune abilities could be seen as a strange new form of power in the Naruto universe.
An interesting fanfiction idea for a Star Wars Rebels Inquisitor OC is an Inquisitor who was once a padawan of a well - known Jedi Master. This backstory could create a complex character with internal struggles between their past as a Jedi and their current role as an Inquisitor. They might also have some inside knowledge of Jedi teachings that they use in unexpected ways. For example, they could use Jedi meditation techniques to enhance their dark side powers.
One interesting storyline could be Dark Naruto using the Rinnegan to reshape the ninja world according to his own dark vision. He might start by taking over hidden villages one by one, using the powers of the Rinnegan like the ability to summon powerful creatures or manipulate gravity. Another could be his interaction with other powerful characters. For example, how he would deal with Sasuke, who has his own set of powers and goals. It could lead to epic battles and power struggles.
Some fanfictions might focus on the psychological effects of the mind control jutsu. For example, if a character is under mind control for a long time and then is freed, how do they deal with the memories of what they did while controlled? It could be a very emotional and character - driven story. Maybe they struggle with guilt or fear of being controlled again.
A great crossover could involve the ninja clans of Naruto in the world of Game of Thrones. The Uchiha clan's Sharingan ability might be compared to the prophetic dreams some characters in Game of Thrones have. Maybe the Uchiha could use their powers to foresee battles or political upheavals. And the Hyuga clan's Byakugan could be used for surveillance in the castles and cities of Westeros, much like how the maesters keep an eye on things. Also, the concept of chakra could be introduced to the world of Game of Thrones, where it might be seen as a new form of magic.
One interesting plot could be Naruto mastering a new and extremely powerful genjutsu that even the strongest shinobi can't break. He might use it to defeat a great enemy that was thought to be invincible. Another could be Naruto using his genjutsu god - like powers to enter the minds of his friends and heal their inner traumas.
There's also a plot where Madara and Naruto are the only two people left in a post - apocalyptic shinobi world. They must rely on each other to survive and in the process, they discover new aspects of themselves and their powers. This plot is full of action and also explores their emotional connection in a desolate setting.