I think the misshapen teeths represent her warped mind because if you only see her from the outside, you can only see a beautiful girl, but when she speaks, you cam see how her inside ia really like
I think that one of the problems that japanese young adults are facing is that they have to dedicate a lot of there time to thier jobs and the little time they have for themselves, they spend it in their hobbies. The Japanese work ethics are very heavy. Some people say that first is your job...