One possible plotline could be about Batman making a tough decision that accidentally puts Robin in harm's way, and then he has to deal with the guilt. For example, sending Robin on a mission that was more dangerous than expected.
It could be that Batman is under the influence of some mind - controlling substance or spell that makes him act out against Robin. Then the story would be about Robin trying to figure out what's wrong with Batman and how to save him while also protecting himself.
There might also be other characters from the Batman universe involved. For instance, Alfred, Batman's loyal butler. He could play a role in trying to mediate between Batman and Robin when things go wrong. Another character could be one of Batman's villains, like the Joker, who might take advantage of the situation between Batman and Robin.
One common theme is the exploration of Batman's complex personality. In some fanfictions, Batman may hurt Robin accidentally due to his strict methods or his own inner demons. Another theme could be the test of their relationship. When Batman hurts Robin, it forces them to re - evaluate their bond, whether it can withstand such a breach of trust. Also, the theme of redemption often plays a part. Batman may then strive to make amends for his actions, which adds depth to his character development in the fanfiction.
One interesting plotline could be Robin trying to prove himself to Batman in a more complex and dangerous mission within the fanfiction world. Maybe there's a new villain in Gotham that only Robin can stop, but Batman is hesitant to let him take the lead at first.
One interesting plotline could be Damian's training to become a better detective like Batman. He could be facing challenges in understanding the criminal mind and learning how to use forensic evidence. Another could be their team - up with other members of the Bat - family to take on a powerful new villain in Gotham.
In gay Batman and Robin fanfic, the stories could potentially focus on how their relationship might be perceived in the Gotham City society. It could be a way to explore themes of acceptance and discrimination in a fictional yet relatable context. Also, the fanfic might give a fresh take on their adventures, with their relationship as a central driving force rather than just their crime - fighting duties.
Well, the fanfic might also introduce new storylines. Maybe it takes place in an alternate universe where Batman and Robin face challenges that are different from the typical Gotham City threats. It could be about them dealing with a supernatural force that only their combined skills and relationship can overcome.
One idea could be that Robin gets trapped in an alternate dimension where the villains are in control and Batman has to figure out a way to bring him back. Another could be a story where Batman is injured and Robin has to take on a major villain alone, learning to trust his own instincts more. Maybe a plot where they encounter a new, powerful ally who turns out to have a hidden agenda that threatens Gotham.
One interesting storyline could be Robin growing up and struggling to step out of Batman's shadow. He wants to prove himself as an independent hero while still respecting Batman's teachings.
Maybe in a fanfic, there's a magical villain who curses Batman and Robin to be overly ticklish for a day. This forces them to rely on their other skills like detective work and stealth while dealing with this strange affliction. They might also have to ask for help from their allies, leading to some really funny interactions.
One interesting storyline could be baby Robin getting lost in Gotham and Batman having to search every nook and cranny to find him. It could show Batman's desperate side as he's not used to being so worried about a young Robin who doesn't have his full skills yet.