The whole Luca Blight's father running away like a coward and leaving Luca, and his mother at the mercy of bandits incident ruined him. Luca's mother sacrificed herself to save Luca and then she was raped by the bandits. Luca's mother later dies giving birth to his sister. Luca found out Muse was behind the bandits attack, and then gradually went insane from his hatred of his coward father who had abandoned them, and muse for setting up that ambush. That snowballed to the point where he hated pretty much everyone who lived, except his bandit sired sister who he cared for slightly, and that was only because she looked like his mother.