In many Batman fanfictions where Robin gets sick, it often shows a different side of the dynamic duo. It could be a chance for Batman to show his more caring side. Maybe he'd take Robin to the Batcave's makeshift infirmary and look after him with great attention.
One common theme is the bond between Batman and Robin. When Robin is sick, it tests and strengthens their relationship. Batman's protective nature over Robin really shines through.
One great 'Batman Robin' fanfiction that involves a sick Robin and Batman's care could be 'A Robin's Recovery'. In this story, Robin gets seriously ill and Batman has to use all his detective skills not just to find a cure but also to keep Gotham safe in the meantime. It focuses on their strong bond and how they support each other through tough times.
In many Batman and Robin fanfictions where Robin is injured, it often leads to Batman becoming more determined to catch the villain. For example, in some stories, Robin gets injured during a fight with a new, powerful enemy in Gotham. Batman then uses his detective skills to track down the bad guy while also taking care of Robin. He might call in Alfred for help with Robin's injuries. This kind of situation shows the deep bond between Batman and Robin and how they rely on each other in tough times.
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.
One main conflict could be their different approaches to justice. Robin might be more impulsive and want to take quicker action, while Batman is more methodical. Another could be Robin trying to prove himself as an equal rather than just a sidekick, which could lead to clashes. Maybe there are also differences in how they view the use of certain tactics or their relationships with other characters in the Young Justice universe.
In a fanfiction, Robin could be injured in a trap set by an old enemy of Batman. This enemy specifically targeted Robin to get back at Batman. Batman, upon finding Robin injured, is consumed with guilt and anger. He goes on a full - scale investigation to find the enemy. Meanwhile, Robin is in a critical condition and Alfred has to use all his medical knowledge to keep Robin alive. The story could focus on Batman's internal struggle between his need for revenge and his responsibility to Robin, and how he overcomes this to save both Robin and Gotham.
His friends like Batman and Nightwing could be main characters. Batman might use his detective skills to figure out what's wrong with Robin, and Nightwing could be there to offer emotional support.