The new kid's character can be developed through their relationships. For example, if they befriend Naruto, they might learn about loyalty and perseverance from him. Or if they have a rival at school, it could make them more competitive and determined to improve.
One idea could be the new kid being a secret relative of Naruto. For example, a long - lost cousin who has some unique ninja skills. This would create a lot of drama as the other students try to figure out who this new person is and what their connection to Naruto might be.
In this story, the new kid may face the challenge of being lonely. Since everyone else already has their friends, it can be difficult for the new kid to find someone to talk to. They might also struggle with the school's rules if they are different from what they are used to. For example, the dress code or the way discipline is handled. Moreover, participating in class can be nerve - wracking as they don't know what the teacher's expectations are yet.
It could be really awkward. Hinata would be so shy that she might not even be able to look at Naruto directly. Naruto would probably be too busy chatting with his friends and not really notice Hinata at first. But then maybe Naruto accidentally bumps into Hinata in the hallway, and he quickly apologizes. Hinata would just mumble a response while blushing furiously.
In high school in this fanfic, Naruto would likely be known for his pranks. Hinata, on the other hand, would be the quiet and studious one. Their relationship could start with small exchanges, like Naruto borrowing a pencil from Hinata in class. He might not think much of it at first, but Hinata would be so nervous. As time goes on, Naruto might start to see Hinata in a different light, especially when she stands up for him against some bullies. This could be the start of a sweet high school romance.
One great fem Naruto high school fanfic is 'Fem Naruto's High School Adventure'. It has an interesting plot where Fem Naruto has to deal with typical high school drama while also hiding her ninja skills. The character development is really well - done.
He could be a new type of threat or ally in the DxD world. Since Naruto has such powerful abilities, the fallen angels might see him as a potential weapon or a hindrance to their plans.
One idea could be to create a fanfic where Naruto is somehow transported to the world of High School DxD. He could bring his unique ninja skills and chakra system. Maybe he teams up with Issei to fight against a common enemy. For example, a powerful devil or fallen angel that threatens both the ninja world and the DxD universe.
At first, it might be just small exchanges. For example, Naruto might say hello to Hinata in the hallway more often. Then, they could be assigned to the same team for a sports event. Hinata's support for Naruto during the event makes him see her in a different light. He starts to seek her out more, and they gradually become friends. As friends, they learn more about each other's dreams and fears. This deepens their bond, and slowly, romantic feelings start to develop between them.