Case Handling Notes: the South and the North

He is a genius who helped the city's criminal police detect serial murder cases at the age of 17. He is also a god who is drowning in hatred and self-blame... She was an angel who stepped into the struggle against darkness in order to find the truth, and gradually turned into the light in his eyes... It became his mission to help her uncover the facts step by step and punish the demons hiding in the corners of the city. What could be a better reason for two people to stay together for a lifetime than to redeem each other?  You are good medicine, but not bitter. He must keep this extremely effective medicine that can make him calm as before. So good, Mu Yuan, I must love you.