Please Read the Article Quickly. I Forgot the Title of the Book. Two Male Protagonists.

I want to read a book like "Quick Travel: Don't Come Over, You're Looking for Abuse". Please read the story quickly. I forgot the title of the book. It has two male protagonists. The protagonist has no pain. The system brings him to work as a condition to let him experience pain. The protagonist is abusive on the surface but has no feelings on the inside. He is different inside and outside.