Quote Originally Posted by shinta|hikari View Post
Karma demons are karma demons because they can kill. Skill is irrelevant I believe, but as was shown in this episode, geniuses do exist regardless of moral inclination.
No, fiends are those who can kill, and probably will kill because turning into a fiend seems to require some screws to become loose in the head. Karma demons are simply individuals who can't control their cantus anymore and thus screw up their surroundings accidentally. Karma demons, after all, have a history of assisting their own removal and recorded their experiences for any later unfortunates to learn from.