I'm Lucy Routier, your friendly monster-slaying partner. I have blue long hair and blue eyes, people with such appearance as mine are called messengers of light. After the monsters broke out of their world into the human world, I promised to become a monster hunter who could protect humanity. As a child, I had a twin brother Nick, but a monster moved into him and I had to kill him with my own hands. My supernatural ability is the control of a special blue fire, it is very strong. 