It all started from a tint of pen.. the book that shuffled her life from an unfixed puzzle into a solved one. Her talent is above expectations.. How do I describe her? 'full of secrets..' It is rooted in her life that leads her to become this kind of person. A person that even herself does not know.. A living beast, and also known as the "soul reaper" of the world... Who would have thought that a very expert person in martial arts, swordsman, hacker, and the most dangerous assassin in all the history, is a Woman.. A secret that turns to secrets.. she's a well-known racer a popular author and also an outstanding killer.. Being an Assassin is her real job, a job that even her parents do not know. And so, Secrets turned to Mystery.. a mystery that only herself can solve. and just like that, she woke up dumbfounded, INSIDE HER OWN STORY... Little did she know that it is a key for her to solve the future. To solve the unknown inside of her To solve that rooting Mystery of hers...