A setting which, at first sight, looks nice and cute. The world is full of cheery colors, people are smiling, happy and helpful, and you're probably thinking you've just stepped into a Sugar Bowl. Suddenly, you notice something wrong, and upon investigating, you realize that every single thing below the surface is horribly wrong and dysfunctional. Maybe the society is Powered by a Forsaken Child. Maybe the cheeriness is maintained by totalitarian rulers that dole out horrible punishments.