You could insert yourself as a civilian in Naruto's world who has a special connection to the ninja world. Maybe you are a healer who doesn't use chakra in the traditional way but has some natural talent for curing diseases. This would put you in a position to interact with ninjas and get involved in some of the big events in the story.
A great plot idea is that the self - insert vampire is actually a lost member of a forgotten clan in the Naruto world that has vampire - like traits. They are initially feared by the other characters but gradually prove themselves to be an ally. Or perhaps the vampire is from another dimension entirely and is accidentally pulled into the Naruto universe. They then use their unique abilities to help solve a major crisis in the world, like a war or an impending doom caused by a powerful enemy.
One idea could be inserting yourself as a new recruit with a unique power. For example, the power to manipulate time on a small scale. This could lead to interesting scenarios where you help the team solve problems that require precise timing. Another idea is to be a hacker who joins the team and has to deal with all the high - tech threats they face. You could also be a character from another dimension who accidentally ends up in the Agents of Shield universe and has to find a way back while also helping the team.
First, research the Naruto universe thoroughly. Know the rules of chakra, the different villages, and the existing characters' personalities. Then, create your self - insert character. Decide on their background, skills, and goals. For example, if your character is from a small village, they might be more naive about the big - city - like Konoha. Next, plan the plot. It could revolve around your character's growth, relationships with existing characters, or their impact on major events in the Naruto story.
One popular 'naruto self insert fanfic' is 'A New Beginning in Konoha'. It has an interesting plot where the self - inserted character brings new skills and perspectives to the Naruto world. Another one is 'Into the Ninja World: My Story' which focuses on the character's journey of making friends and facing challenges in the Naruto universe.
Some 'naruto self insert fanfic' are popular for their take on character relationships. They might explore how an inserted character could impact the friendship between Naruto, Sasuke, and Sakura. For instance, a self - inserted character could be a mediator between Sasuke's brooding nature and Naruto's exuberance, adding new layers to their interactions.
One plot idea could be that your self - insert character has a special ability to sense ancient power, and teams up with Robin to find a hidden Poneglyph that is said to hold the key to a great treasure. Another is that your character is from a lost civilization and has some knowledge that Robin needs to complete her research on a particular historical event. A third idea is that your self - insert gets lost in a mysterious library on an island, and Robin has to find and rescue them while also uncovering some long - lost knowledge within the library.
One popular idea could be creating a self - insert character who starts as a novice trainer in the Pokemon world and has to learn the ropes. For example, they might struggle with catching their first Pokemon. Another idea is a self - insert that discovers a rare and powerful Pokemon that no one else has seen before. And also, a self - insert who teams up with famous Pokemon trainers to take on powerful villains.
One idea could be to insert yourself as a commoner in King's Landing. You could be a street - smart character who witnesses all the political intrigue up close. Maybe you work in a tavern and overhear the schemes of the nobles. Another idea is to be a foreigner from Essos who comes to Westeros with unique skills, like being an expert in a form of magic unknown in Westeros. You could then get involved in the power struggles while trying to keep your own identity and goals secret.
One idea could be to create a Faunus character with a unique animal trait, like a bat Faunus with echolocation abilities. You could insert yourself into the story as this character and interact with the main RWBY cast. Maybe your character is a new student at Beacon Academy and has to face the challenges of discrimination from some of the other students due to being Faunus, while also trying to prove their worth in combat and academics.
A common theme is self - discovery. The self - inserted character often has to figure out their place in the Naruto world. Another theme is power growth, as they usually start from a relatively weak state and strive to become stronger like the other ninjas. Friendship is also a big theme, as they make friends with Naruto, Sasuke, and others.