After the Class Reunion, I Control the Times

Two brothers who grew up together. One became a detective and the other became a criminal. One is in the light and the other is in the dark. One treats the other as a brother, and the other treats the other as a chess piece. When the truth was revealed, there was only a pair of handcuffs between them. (This story is based on the first half of my own life, focusing on realism. It mainly talks about the word "if", which means if my choice was this, maybe my life would be the same as the content in the novel.)