How the hell does the point system work? They make it seem like some battles take away more points than others? Some people even end up in the lower double digits, just short of getting expelled. And only 10 people so far have been expelled? I know, the author just wrote it this way to up the stakes, but logically it just doesn't really make sense. You'd think there would be a lot more students dropping out, is everyone just ganging up on the same student until all his points are gone? Is that what's happening? Can you refuse a duel? Can you make a group of friends and just pass the points around so nobody is eve disqualified? Even the story's original MC has gotten some of his classmates expelled.