Whose Triple Personality

A murder occurred in the underground parking lot, and Mao Jing, who happened to pass by, became a witness. From that moment on, the case begins to twist and deform as his world begins to twist. Is he an innocent passerby? Or a self-directed and self-acted two-faced person? After all, is Mao Jing the murderer? Did he have murderous intentions? Did he intentionally leave evidence behind? Was the accident at his parents' house another secret of his? Does Mao Jing, who has multiple personalities, know himself or not? The reason for everything is revealed in the final chapter.