She is an angel, but she is deeply covered by the devil's bloody clothes; she is a devil, but she stubbornly guards all the light, no matter how scarred she is; she is their treasure, but she is locked on the cliff of darkness, waiting only for the final blow to turn her into ashes. "I'm sorry, these are three humble words that I can promise and that you can trust." "Killers don't need tears. It's not that they don't understand, but they are sinful, tearful existences themselves, so they are not worthy." "The life I have is just a bet in a game. The ending of this game has already been set by fate..."
***To put it simply, it's the story of a poor girl's hard-fought revenge in a world where a lot of people die at every turn***