Zu Online official talked about 2 classes which were specifically designed with the fairer sex in mind. These are the Bead Fairy's and the Moonmaiden's.

Bead Fairy: For lovable and outgoing female players

Lovable and outgoing girls tend to want to help other people and bring joy to people around them. Similarly, the Bead Fairy were designed to be the go-to girls for help in group combat. Whether this involves increasing defense and attack power, healing or their thrilling "Trap-Break Strategy" they are indispensable. In addition, with their cute, pretty looks, a Bead Fairy could turn the head of any Swordsman or Sun Warrior.

Moonmaiden: For quiet and clever female players

Not every girl is the outgoing beauty we had in mind when we designed the Bead Fairy's. Many girls are more quiet and clever, playing the game a few moves ahead of everyone else. The cold, beautiful Moonmaiden's usually use various traps to take their enemies by surprise and keep the battle on their terms. With stealth skills and a high attack power, this class is not content to sit on the sidelines cheering and should never be underestimated.