Gem was an assassin and was traveling through the village at the time the village was being attacked.  She helped the village fight against the attack and then decided to just stay in the village. She had problems with getting a job so she moved in with a girl named Rose and they became friends. When Zarriea came, Gem automatically trusted her and was loyal to Zarriea. They are great friends with a growing friendship and usually wherever Zarriea went that was out of the village Gem usually follows.