Reincarnation in the Detective world

Zihao a police constable who gets into an accident. When he opens his eyes he finds himself in another world in someone else's body. He learns that the body he was in was a 19-year-old detective. When he comes to know about that world He realise that he does not have to remain anonymous in this life like his previous life. He promises himself that he will make a separate identity in this world. Will Zihao be able to make a different identity in this world or will not even understand the new world?