Obviously Naruto as the main character. Gabriel would be a key figure, perhaps appearing in flashbacks or even in a more present form to guide Naruto. There could also be other Naruto characters like Kakashi, who might be intrigued by Naruto's new heritage and try to help him understand and control it.
Well, it could be about Naruto having some sort of divine powers inherited from Gabriel. Maybe he has to use these newfound powers to face tougher enemies in the Naruto world. He might also struggle with his identity as both a ninja and the son of a divine being.
In this fanfiction, Gabriel could be an original character created by the author. He might be a powerful wizard with a mysterious past. Maybe he was once a great hero or a feared dark wizard, and his connection to Harry is what makes the story so interesting.
To develop Naruto's character in this fanfiction, he could face challenges that require him to use his wits more than his physical strength, which he learns from Gabriel. Gabriel's character could develop by learning about Naruto's past, his struggles, and his dreams. This could make Gabriel more involved in the mortal world and its affairs. He might even start to question some of the angelic rules and traditions he has always followed.
Naruto would probably be very curious about Gabriel. He's used to dealing with all kinds of strange and powerful beings in his own world, but Gabriel with her angelic nature would be something new. He might start by asking a lot of questions about her powers and the world she comes from.
One possibility in this fanfiction is that Naruto is summoned to Serefall by Gabriel for a special mission. Naruto's combat skills would be put to the test against new and powerful enemies in Serefall.
There could be so many amazing stories in a fanfiction involving Naruto, Gabriel and Serefall. Maybe Naruto could team up with Gabriel to save Serefall from some great danger. Their unique abilities combined would make for an epic adventure.
The power dynamics can be really fascinating. Naruto has his chakra - based powers like Rasengan and Sage Mode, while Gabriel has divine powers. Fanfictions explore how these powers interact, whether they combine in new ways or clash in battles. For example, in some fanfictions, they might use their powers together to defeat an extremely powerful foe that neither could handle alone. Also, the character development can be unique. Naruto's journey of growth and Gabriel's possible change in perspective when exposed to the ninja world add depth to the stories.
One idea could be a crossover where Naruto's world is merged with the one that Gremory and Gabriel exist in. Naruto, with his strong will and ninja skills, could form an alliance with Gremory, who might be from a noble demon family, and Gabriel, an angel. They could fight against a common enemy that threatens both their realms, like a powerful dark force that wants to disrupt the balance between the ninja world, the demon world, and the angelic realm.
Another theme is the idea of power and growth. Naruto is constantly striving to become stronger, and when Gabriel enters the picture, there could be new ways for Naruto to gain power or a new understanding of his own abilities. Gabriel himself might also experience growth in terms of his understanding of the mortal world.