Sienna Lincoln Monzani also called as The White Fox was being kidnapped since she was five years old by the most dangerous mafia organization. Because of her beautiful and alluring appearance even though she is young the mafia boss decided to hide her face using a fox mask. They also forced her to trained to be a professional killer and used her as a killing machine. The organization knew that the girl had a hidden extraordinary skills but they don't know how to awaken it. They used several ways and attempts but still the called dark impulsivity inside her didn't awaken. They also used a lots of drugs and poisons injected on her body but the result was still the same. But because of the experimentation, her body become immune to the poisons and her senses become sensitive. Also, her fighting skills and attacks become powerful. She become the best tool of the organization and the captain of the famous group called "The Nine Fangs". But they didn't know that she's slowly dying inside. She wants to be with her family and live like a normal person but the organization get rid all of them. They didn't give her a chance to have an imagination to be free. She is empty and depressed. She forgot how to be happy, sad and in pain. She lost her emotions and expressions on her face. She looks like an empty shell, a doll or puppet. She wants to kill herself but when she met the heir of the organization she hated the most, everything change in one snap. "Run."the girl said while panting. "Fast, you should go that way." "What about you?"the boy said. "Let's run together." She shook her head,"No. I can't be with you, not now." "But what can I do for you?" She touched his both cheeks and they leaned their heads against each other. "I want you to be mine." "Huh?" "Let's meet again, Mikey"she said while smiling behind her mask. And now, she has a reason to keep on living again. (TOKYO REVENGERS FANFICTION)