Actually, that firemain in red cloth is my kinda type of girl .. But yeah, i know .. It's a trap -_-

About the Mains having both genders, i think its impossible since some of the skills we have targets specific genders like Earth Main's whatever passive it is, it targets male units and increase its atk/nin .. Same with Windmain's whatever it is passive, that boost her damage for every female unit on the team .. Having that said means another set of coding and redesigning, and that's extra work that they wouldn't want to have .. (Because look, at the very least, the spellings and wrong questions in cat quiz, it's been forever and still not fixed)