Well, in a Young Justice fanfiction, the concept of Naruto being immortal could be integrated in various ways. One way could be through some sort of magical or scientific experiment gone wrong that gives him immortality. Maybe it's a meta - human experiment in the Young Justice universe that accidentally gives Naruto the same powers as Vandal Savage, including immortality. Another possibility is that it could be a result of a powerful jutsu he uses that has unforeseen consequences and makes him immortal.
The integration might involve Naruto having to deal with the moral implications of being immortal in the Young Justice world. He would be an outsider already, being from the Naruto universe, and immortality would set him even further apart. He might have to decide whether to use his immortality for good, like protecting the young heroes in Young Justice, or if it could lead him to be more self - centered. After all, in the Naruto series, he values life highly, so this new state of being would be a huge adjustment.
Perhaps the writers of the fanfiction could link Naruto's immortality to the Lazarus Pits in the Young Justice universe. There could be a connection where the energy or magic in the pits somehow interacts with Naruto's chakra, creating an immortality effect. This would tie in the two different universes in a really interesting way. Naruto could then have to navigate the politics and power struggles that surround the Lazarus Pits, all while trying to find a way back to his own universe if that's his goal.
One way could be by having Inuyasha be from a different dimension that somehow gets connected to the Young Justice world. Maybe a magical portal opens up and he stumbles through, bringing his own set of problems and abilities with him.
Another possibility is that he could be a part of a multi - dimensional or time - travel plot. Maybe he gets pulled into the Young Justice universe due to some interdimensional rift. His presence could then create a whole new set of storylines, like the team having to deal with the villains that follow him through the rift, or him having to adjust to the different rules and politics of the Young Justice world.
In a fanfiction scenario, a Young Justice character with fire - based powers could meet a Naruto character who has seen Amaterasu. They would compare their powers. The Naruto character could explain how Amaterasu is more than just fire, it has a spiritual and chakra - based component. The Young Justice character could then try to incorporate some of those concepts into their own power use, leading to a new and stronger form of their fire ability.
It could also be a character - based integration. A new character inspired by Dark Naruto could be introduced into the RWBY fanfiction. This character might have similar traits such as a thirst for power and a bit of an anti - hero complex. They could interact with the existing RWBY characters, causing conflict and also growth among them.
Susano Naruto in a Young Justice fanfic might also have a cultural impact. Naruto's world has a distinct Japanese - inspired culture, and when combined with Young Justice, which has its own set of cultural elements, it can create a really unique blend. The author could use this to explore themes of acceptance, adaptation, and the clash of different ways of life. For example, how would the heroes of Young Justice react to a power like Susano, which is so different from what they're used to?
In some fanfictions, Wally is often portrayed as a bit of an outcast due to his immortality. He feels different from his friends and teammates. His personality might change too. He could become more reserved as he witnesses the passage of time around him. But at the same time, he still has that underlying heroism that makes him a great character.
Naruto would be a bit of a wild card at first. His brash and head - strong nature might clash with some of the more reserved members of the Young Justice team, like Aqualad. But his determination and loyalty would also be something that the team could quickly come to respect. He would probably befriend Superboy quickly as they both have a bit of an outsider feel.
The concept can be developed by exploring their relationships with the Young Justice characters. For instance, a batboy might form a close bond with a Young Justice member who has a very different background. This could lead to character growth for both of them. Also, the fanfiction could introduce new villains or threats that only the combined skills of the batboys and Young Justice can handle. It would create a lot of action - packed and tense scenes.
Yes, Damian as Robin is quite a popular concept in Young Justice fanfiction. His complex character, with his training in the League of Assassins and his struggle to fit into the more heroic world of the Young Justice team, offers a lot of interesting story possibilities for fanfiction writers.
In Young Justice fanfiction, if Ghost Rider were to be introduced, it would change the dynamics completely. His presence would likely draw out the villains who are interested in his power or are afraid of it. The Young Justice team would have to learn to work with someone who has a very different moral code and a power source that is based on vengeance. This could lead to some really intense storylines where the team has to decide how far they are willing to go to protect the world with the help of Ghost Rider.