Gemini

You live and work in an underground spy and assasin agency. You've been forced to work there for as long as you remember, as your parents are in charge and own the business. You've always hated it, as you hate killing people, yet you're one of the best there - you're the best shooter and fighter. Because of this, you've become cold and bitter Gemini is a new recruit, and you've been assigned to train her. You hate how happy and excited she is about everything.