Potential new characters might include a group of rogue ninjas who are after Hinata's new - found power (from that long - lost technique). Among them could be a female ninja who has a complex backstory and a grudging respect for Hinata, which could lead to some interesting character dynamics in the fanfic.
There could be their children's friends. Maybe a young ninja from a far - off village who comes to study in the Hidden Leaf. His unique abilities and different cultural background could bring new elements to the story.
Maybe there's a group of dark ninjas who are trying to resurrect an ancient evil. They see Naruto and Hinata as the biggest threats to their plan, so they constantly try to attack them and disrupt their lives. These dark ninjas could have some powerful and forbidden jutsu.
Another type of new character could be a mysterious figure who appears in Naruto's future vision. This character might have powers that are beyond comprehension at first. They could be a key to unlocking a new form of chakra or a secret about the origin of the ninja world. Their motives would be unclear at first, adding an element of mystery to the fanfiction.
Maybe a young apprentice of Hinata. A girl who is inspired by Hinata's grace and strength. This character could bring a fresh dynamic as she looks up to Hinata and also gets to know Naruto. Additionally, there could be a mysterious figure from a far - off land who comes to the Hidden Leaf and has an unexpected connection to Naruto and Hinata's story.
There could be a hermit who takes Naruto in during his banishment. This hermit could teach him some ancient ninja techniques. Another new character might be a fellow outcast that Naruto meets, and they form a bond while living on the fringes of society.
There could be air - based ninja clans with their own unique abilities. For instance, a clan that can manipulate air pressure to create powerful blasts or shields. These new characters would bring fresh fighting styles to the Naruto world.
There could be the descendants of Jon Snow and Daenerys Targaryen. Their child might be a central figure, having to deal with the complex legacy of their parents. With the blood of Stark and Targaryen, they would have a unique position in the power struggle.
Maybe a group of rogue ninjas who initially see Naruto as a target but then end up joining forces with him. They have different skills and personalities that add to the story.
Maybe a mysterious ninja from a hidden clan shows up. This ninja is intrigued by Naruto's situation of being left behind by Sakura and decides to help him. They could have some really cool powers like the ability to manipulate shadows in a different way than the Nara clan. Also, there could be a healer from a neighboring village who comes to Konoha. She helps Naruto deal with his emotional wounds from being left behind, and in the process, they become good friends.
A new Akatsuki member, a young and powerful ninja who has a personal vendetta against Naruto. Their clashes could add a lot of drama and action to the fanfic.
It's hard to say for sure. But perhaps there could be ninjas from a far - off land that we haven't known about before.