It can symbolize protection. Batman is the mentor, and when he carries Nightwing, it shows his instinct to keep Nightwing safe from harm, whether it's physical harm from villains or other threats.
One possible fanfic could involve a battle against a powerful villain. Nightwing might get injured while trying to protect Gotham. Batman then has to step in not only to defeat the villain but also to take care of Nightwing. He could use his advanced medical knowledge and resources in the Batcave to nurse Nightwing back to health.
In this fanfiction, often there's a power struggle. Nightwing, with his own set of skills and experiences independent from Batman, might oppose Batman on certain principles. Maybe it's about different approaches to crime - fighting. Nightwing could be more lenient while Batman is strict.
In some fanfiction, there could be an emotional outburst. Batman has a lot of pent - up emotions, and if Nightwing accidentally triggers him by saying something about his past, like his parents' death or his own failures, Batman might lash out and slap him. It's a way to show the complex and often damaged psyches of these characters in the fan - created stories.
One common theme is the mentorship relationship. Batman was Nightwing's mentor, so many fanfics explore how that relationship developed over time and how it affects their current interactions.
The theme of family is also prevalent. They consider themselves part of the same family in the Batman lore. Fanfictions may explore this family - like bond in different ways, such as dealing with conflicts within the family or showing how their relationship is different from other family - like relationships in the Bat - family.
A storyline could involve Nightwing being framed for a crime in Gotham. Batman, believing the evidence at first, tries to bring him in. Nightwing, of course, resists as he is innocent, and this leads to their fight. As the story progresses, they both realize there's a bigger conspiracy at play.
The power dynamic. Batman is the mentor, but Nightwing has grown into his own hero. Their sparring shows the shift in their relationship. It's exciting to see how Nightwing can now hold his own against Batman.
Well, one type of fanfiction could be about a young Nightwing still learning from Batman and then getting caught in a conflict with Slade. The story could show how Nightwing uses the skills he learned from Batman to outwit Slade. Another aspect could be the psychological battles. Since Slade is a formidable opponent, fanfictions can explore how Nightwing and Batman deal with his mind games, and how their own mental states are affected during these encounters.
Some fanfictions show Slade taunting Nightwing about his relationship with Batman. This can create tension between Nightwing and Batman as Nightwing might feel the need to prove his independence. Batman, in turn, may be overly protective, which Slade can use to his advantage. The interactions can also lead to unexpected alliances. For instance, in some stories, Slade and Nightwing might have to work together briefly against a common enemy, much to Batman's dismay.