It could be about many things. It might be a fan - made story where characters in Naruto act as eternal guardians. Maybe they protect a certain village, a powerful jutsu, or some kind of ancient secret forever.
It depends on the specific fanfiction. It could be Naruto and his friends taking on the role of eternal guardians. Or perhaps some new characters created by the author for this concept.
Since it's a Naruto fanfic, 'eternal guardians' might be a new element added to the existing Naruto lore. It could be about how these guardians are connected to the different ninja clans. For example, they might have a special bond with the Uchiha clan because of their sharingan powers or with the Uzumaki clan due to their strong life force. The fanfic may also focus on the training or battles that the main characters have with these eternal guardians to gain new powers or to protect the world from a new threat.
Given that it's a Naruto - based fanfic, Naruto Uzumaki might be one of the main characters. He could be the one who discovers the existence of the eternal guardians. Sasuke could also be involved, perhaps in a conflict or alliance with these guardians. And if the fanfic focuses on the shinobi world as a whole, characters like Kakashi or Tsunade might also play important roles. As for the eternal guardians themselves, they could be unique characters with their own personalities and powers.
Yes, there might be. There are a large number of fanfiction works out there that explore various crossovers and scenarios. Some fans might be interested in creating a story where Naruto and Akeno are guardians in a particular fictional setting. However, not all such fanfictions are well - known or easily accessible.
In a 'naruto rise of the guardians fanfiction', the story could be a crossover where the characters from Naruto and the Guardians meet. Naruto and his comrades may be called upon to help the Guardians in their fight against some dark force. The fanfiction might play with the idea of Naruto's ninja skills and the Guardians' unique powers working together. For instance, Sasuke's Sharingan could be used in combination with the Guardian of Dreams' power to enter and manipulate dreams. It could also show how the values of the Naruto characters, such as friendship and perseverance, are applied in the context of the 'Rise of the Guardians' world.
Sasuke is often a character used as a guardian in fanfiction. His powerful skills and his connection to Naruto make him a likely candidate. He can use his sharingan to detect threats and protect Naruto from danger.
Perhaps they are guardians of a peaceful village that is suddenly under threat from an ancient evil. Naruto, with his experience in protecting his own village in the Naruto series, and Akeno, with her combat skills from High School DxD, must work together. They start by training the villagers to defend themselves, and then face the evil directly. Along the way, they might have to overcome differences in their fighting styles and personalities to succeed.
Well, Naruto himself is often a popular character in such fanfictions. His determination and his growth as a ninja make him a central figure. Sasuke can also be quite popular as he has his own complex backstory and his power is formidable. Among the 12 Guardians, the ones with the most unique abilities or the most tragic backstories tend to stand out. For example, if there is a Guardian who has the power to control time but at a great cost to himself, he might be a fan favorite.
Most likely Naruto would be one of the main characters. Since it's a Naruto - based fanfiction, he'd probably be at the center of the story. And maybe some of the Guardians from 'Rise of the Guardians' would also be main characters, like Jack Frost.