Weird Story About Rules: I Am Not Mentally Ill

(Without a heroine, it's not a cool novel) I'm a lunatic in a mental hospital. The reason is that ten years ago, the whole family died tragically. Except me. All evidence points to me. So I was treated as a lunatic and sent to a mental hospital for treatment. But I know, I'm not crazy, there really is another person at the scene. From that day on, I watched everyone twist into monsters. The rules are logic, but there are too many distortions, madness and pollution here. My name is Zhen Cheng, and my father tells me to treat people sincerely. So those who bully me must pay the price. Who is that and why is it so familiar? What exactly is this strange story? ... I must.. Live for able to find the truth