I actually kinda like the fact that the autor of the manga kept Crona's gender anonymous, it lets fans decide themselves, and it makes for a good debate to keep Soul Eater a hot topic. I personally don't mind either way, but Crona does come off as sort of girlish in both her figure and personality. I am not saying this to be ridiculing, either. Basically what I mean to say is that it all depends on what a person interprets as male o female, and a person's opinion is theirs to keep.