To Stain a Hero

All it took was one variation in Shouji Mezou's routine to throw his previously calm life into a whirlwind of fear and uncertainty. If not for this one small change, he would not have gone grocery shopping alone. If not for that, he would not have wound up returning to U.A. after sundown. And if not for that, he would have never wound up on Hero Killer Stain's radar. AU!