Once upon a time, there was a Heartless-Assassin who kill for hired. She killed enormous of people. She was known once as a COLD, MERCILLES, HEARTLESS, And a FEARLESS KILLER... But, one day she Dissapeared and Nowhere to be found, She lost her MEMORIES as she lost her true identity and become a SWEET, KIND, CARING, CHILDISH, and a LOVING person that far away from what she really was... Can she forget the past and lived with her new life with happiness? Or.. She will came back and still take lives?