Quick Time Travel on the History of a Senior Cannon Fodder Who Betrayed the Male Protagonist and Committed Suicide

The male protagonist is reborn and returns to see how cannon fodder gains favor and embarks on the path of sadism and love to the end. In short, it's torture, abuse, abuse, and a happy ending. If the copywriter is incompetent, you will lose if you take it seriously. Update once a week, update on weekends, the time is variable, update when you are not busy with studies, high school dog, art exam in December, be careful if you fall into the trap.