In a world where heroes are worshiped and power makes you a target, no one is safe—not even the untouchable X-Ranked heroes of Red Dove City. Viola, a promising new hero, crosses paths with the elusive and dangerous Odium, a man who seems to know far more than he lets on. Following him could lead her down a rabbit hole deeper than any hero has ever dared to venture, and the truth she uncovers might be more dangerous than the enemies she fights.