Tokyo Ghoul (Series) favorite_border

From Book 1: Having narrowly escaped death, high school student Ken wakes up as a ghoul. At first everything seems normal. But then he begins to develop an appetite for human flesh — which raises some rather serious moral questions. Ken would sooner kill himself than eat another person. It never comes to that, however, because it turns out there are others like him. A secret society of ghouls has long been living among us.