Divine Children The book opens with the main character witnessing a bloody fight. Then shortly after he kills a man in self-defense. And then he spends much of the rest of the book guilt-ridden, like violence is something never seen in his society.
Face the Night Catriona MacGregor. Believing herself responsible for her parents’ deaths, a dispute rising within her band of outlaws, a train derailment, and other such events, she spends most of the novel running from her guilt. And then it becomes contagious, with several other characters coming down with similar symptoms.
Lost Shift Donovan, over having had an with a long-time friend who’d had a crush on him for a while. The this-is-all-my-fault moaning fills up several chapters and is the beginning of the romantic plot.