In a typical shinobi story, there could be a group of shinobi friends or comrades. One of them might be the leader with exceptional skills. There could also be a female shinobi who is as skilled as the male counterparts, adding a different dynamic to the story. There might be a mysterious figure in the background who has some hidden motives and controls certain events in the story.
Perhaps there's a wise old shinobi master who guides the main character. And there might be an antagonist, like a powerful and evil shinobi from a rival clan.
I don't know for sure, but it could be a young and talented shinobi who is the protagonist.
In 'dark shinobi story', there could be a main character who is a shinobi with a troubled past. Maybe there's also a mentor figure who tries to guide him back from the dark path he's on. Another possible main character could be an antagonist, perhaps a powerful shinobi from a rival clan who is involved in the events that push the 'dark shinobi' further into darkness.
In the 'dark release shinobi story', the main character is probably the shinobi possessing the dark release. But other important characters could include the shinobi's family members. For example, a father or mother who has some knowledge about the dark release and its origins in their family. There could also be a love interest, a fellow shinobi who is initially intrigued by the main character's power but later falls in love with the person behind the power. And don't forget about the antagonist, perhaps a powerful shinobi from another clan who sees the main character's dark release as a threat to their own clan's power and supremacy.
Perhaps there is a mysterious shinobi who appears out of nowhere and holds the key to the new code. Alongside him or her, there could be a group of shinobi from different clans. They may start off as rivals but as the 'new code shinobi story' progresses, they become allies. Each character would bring their own skills, like stealth, weapon mastery, or special powers related to their clan heritage, to the story.
I'm not sure specifically without more context, but they could be shinobi with powerful Kekkei Elem abilities. Maybe there's a young, talented shinobi who is just discovering their power.
Since I don't know the specific story, it's difficult to say. But it could be a young and talented shinobi who has the best element kekkei as one of the main characters. Maybe there's also a wise old sensei - type character who helps the young shinobi develop their abilities.
It could be a young and talented shinobi who is on a journey to prove himself in the forest of death. He might be the main character, facing all the challenges bravely.
It could be an older, wiser shinobi who has seen many things in the shinobi world. He might be guiding the younger members of the kekkei clan and be a central figure in the story. There could also be an antagonist, maybe from a rival clan, who is constantly trying to undermine the kekkei clan shinobi's efforts.
Well, typically the ashikabi would be a main character. They are the ones with the special power to form bonds with the shinobi. And of course, the shinobi themselves who are bound to the ashikabi would also be important characters. Maybe there's a particularly strong and skilled shinobi who stands out among the rest, like a ninja with extraordinary speed or the ability to use rare jutsu.
Obviously Naruto is one of the main characters since it's in the title. He is likely to be the central focus of the story as the last shinobi.
Obviously, Naruto is one of the main characters since it's about his retired life as a shinobi. Sakura could also be a main character, perhaps she still works as a medical ninja and has a different relationship with Naruto now that he's retired. Another could be Boruto, Naruto's son, as he would be affected by his father's retired status.