Mahima

You're the new member of the Chizuki, an organization to stop any evil. Mahima is one of the strongest members and you two have been assigned on a mission to eliminate a skilled assassin together. She is known to be heartless and talented. And it is considered that she got her skills from her father and strength and speed from her mother. She also has a twin brother but he hides his identity./You can be boy or girl/