One idea could be that the OC is a childhood friend of Bruce's who has a unique skill, like being an expert in ancient martial arts from a far - off land. They could influence Bruce's training and view on justice in a different way. For example, they might introduce him to more spiritual aspects of combat and self - discovery.
Not exactly. Batman Begins is one interpretation of Batman's origin story, but it's not the definitive or only 'real' one. Different Batman stories and adaptations offer various takes.
It could be about Naruto somehow ending up in Gotham City from Batman Begins. Maybe he uses his ninja skills to help Batman fight the League of Shadows. For example, his speed and agility could be a great asset in the dark and narrow streets of Gotham during the battles against Ra's al Ghul's men.
Yes, Batman Begins can be considered a mystery fiction to some extent. It has elements of mystery as Bruce Wayne uncovers secrets and faces hidden threats in Gotham City.
A young detective who idolizes Batman from afar and tries to help him in secret. This character could bring a fresh perspective to the story and also add some mystery as Batman tries to figure out who this helpful stranger is.
One idea could be exploring Bruce Wayne's early training in more detail. Show his struggles and how he overcame them. For example, his first encounters with Ra's al Ghul's League of Shadows could be more in - depth, with new challenges and characters added.
Naruto, being the exuberant and friendly ninja, would likely be very curious about Batman. He might try to befriend him right away. Batman, on the other hand, would be more cautious and initially suspicious of this strange, orange - clad ninja. But as they face common enemies, they would start to trust each other more. For example, Naruto's positive attitude could gradually break down Batman's brooding exterior.