Description：A story that happened to Jiang Xiaobai: a lost memory, a glass ball that he carries with him, emails from ten years ago, a girl that appears in his hallucination, a girl that he meets in reality, and fragments of memory are pieced together... About the accident ten years ago, the destined fate between a boy and two girls, and the reunion ten years later. The truth behind the regret and guilt is revealed layer by layer...