Her name was Katherine Stevenson. She was a shy and introverted high school student, but kind, kind and innocent. One day, while she was leaving school, she was kidnapped and tortured by terrorists. They cut off parts of her body and replaced them with robotic parts. Furthermore, they increased his musculature and enhanced her DNA, giving him superhuman strength. The terrorists force her to kill people. Now, she works for the terrorists as an assassin. She wants to be a normal girl again.