Library

I am stupid in order to avoid the scrutiny of the world, and I show my sharpness in order to annihilate the fangs of all evil. I'm walking on the edge of a knife, and I'm only a hair away from the gate of hell. Hiding in the world may make the time longer, but I can't catch the tail of the truth. Coming out of the world will make my life messy, but I like this short-lived dazzling light. My eyes changed from color to black and white, and gradually from black and white to blank. I am a psychic detective. Who are you...?