I am an orphan. I was taken in by my elder brother when I was four years old. On my birthday, I suddenly got a piece of strange jade, and the story unfolds from here. This piece of jade is a clue, and if I want to know my life experience, I can only rely on myself. But later I discovered that I was not the only one who wanted to know the secret behind this. I felt that there must be a major conspiracy behind all this, and I was already getting deeper and deeper...