Men in Black Dresses

Stories in this universe are about America's most covert secret agency, who protect transgender people from the scum of humanity. The headquarters for MiBD is a very non-descript building, which you might have passed without even thinking about what might be inside. Anyone wandering in would be met by a polite receptionist who would assure them that this was not the building they were looking for, and then provide directions to their actual destination. You might even recognize it if I told you just where it is.

Of course, if I told you, I would have to kill you.