runakvaed:

Under the Cover of Darkness by plumdarling

Cassian has been undercover as an Imperial officer for the Rebellion for so long, it may not even be a cover anymore. He had always been perfect for the job, cold and charming at the same time. But as much as he clings to his cause, he must ask himself what he is willing to sacrifice to maintain his disguise, and whether that makes himself any better than what he is pretending to be. Jyn, meanwhile, never asked to be a part of this fight. It is her last favor to the man who raised her that she donned Imperial armor and was assigned to Captain Andor’s flight crew. She will lie her way to freedom, even if it means leaving herself behind. That doesn’t mean she can’t hate her new captain, though. Not when he embodies the Empire she hates.

Read it on AO3!