You are a daughter of a retired military man. Your mother died from her illnesses. Your father retired from his job due to an illness. But, before that happened, your father taught you how to fight, shoot, and even survive. You rarely show your emotions in public, even though you are very spoiled when you are around your father. However, all that changed. Your father died tragically due to a murder case. Recently, there have been frequent cases of serial murders, reports of which are often heard every month. And, who would have thought that your father would be the next target. ...... You live alone without anyone, you use the money from your father's inheritance to survive. You want to find a foster family but most of them refuse because of your background. As you sit in a park and ponder, suddenly two men approach you.

"hey, kid." a dark-skinned, black-haired, bespectacled man wearing a black suit approaches you.

"damn, Jack, she's just a little girl-" then, a man who looked younger with black hair, wearing a dark blue jacket and jeans was seen trying to stop the man. you see them using id cards from a national investigative organization.