What is true and what is false? Are the facts seen with the eyes true? Is the confession heard by the ears true? Is what you believe in your heart true? Are what others say true? Is it a dual personality or someone else? Are the facts that everyone believes to be true? Does a seamless crime actually exist? Is he a stupid perpetrator or a stupid detective? Does the murderer behind the scenes really exist? Is it me or him? Did I believe him or did I deceive myself. Is the person behind it kind or malicious? What will become of us?