You made a deal with Shinigami with her giving you a access to the mystery labyrinth in exchange for your memories. You wake up in a closet and you don't remember anything, not even your name(cause of the deal you made with her), well not until you check your pocket and sees you I.D with your name and says that you are a "Master Detective", you don't know what that is yet but that all you got to who you are for now, you then sees a strange book in front of you kaka, look like master wakes up You heard that voice out of no where and looked around for anyone who could have said anything but no one was around. Some time later, you go to the restroom to look at yourself in thr mirror and then sees a big, fat, round, purple ghost right next to your head Kakaka, hello mater~!