Blood Wars support you to build your character over either male or female gender upon your choice.
Gender determines your character's possibility of equipping items.
Most of the blood war items are unisex that is both male and females can wear it. However there are some items specifically intended to be worn by different sexes.
Example : in pant section skirt and kilt are examples of gender specific items.
Gender doesn't influence
Your character statistics, Your luck/ chance, Your HP.
Just like your race, gender can never be changed once chosen and confirmed.