Jason is amused whenever she says he's the little brother. Cass is pretty sure she's got at least a month on him. Also being dead doesn't count. Either way, Cass is claiming big sister-hood. It's not like anyone can stop her.

(Prompt: I want to see Batman acting as a parental figure towards Robin. And to be awesome at it. You could maybe include hugs?) "Batman is looking at him with slightly narrowed eyes that anyone else would be likely to find intimidating, but which Robin knows well enough to interpret as Batman's 'what is the appropriate way to respond to people who are actually remotely normal' face."