I asked a girl In my class if she watches anime she said : ' no offense but I wouldn't watch that program if it was the last thing on TV. ' what I said: ' its not A program.' she said : ' what is it then and I simply replied life
The top one is Crona's sex so it's what he biologically is. Gender is what YOU process as. Crona has never clarified for us so yes it is unknown. Either way Crona is still my favorite. Right above Kid.