I always think that Hentai artists alone dare to write truly dark stories. Akame ga Kill and the likes are merely "edgy", shonen hot blooded action comic with a sprinkle of edge to differentiate itself. I still remember Bitter Virgin and how it allowed serious subjects to be handled in an entertaining way, without the constrain broadcast and publishing censorship. To me as an avid comic reader, the step to become a true fan is reading comics that makes you very uncomfortable.