Rage

Jackie Morse Kessler's Riders of the Apocalypse series follows teens who are transformed into the Four Horsemen of the  Apocalypse. In the second book of the series, Rage, a teenage cutter becomes War, one of the Riders of the Apocalypse. Missy didn't mean to cut so deep. But after the party where she was humiliated in front of practically everyone in school, who could blame her for wanting some comfort? Sure, most people don't find comfort in the touch of a razor blade, but Missy always was .