The black fairy tale and the ordinary fairy tale are actually not very different. In the general fairy tale, the world has a complete rule. All characters must be strictly abided by this rule, and all rules should be strictly enforced.

But in the black fairy tale, there are rules, and the rules are full of contradictions. Although the rules are strictly observed to some extent, they are not necessarily strictly enforced. In short, in the black fairy tale, the world is not entrusted with some complete rules, but is handed over to some subjective, mysterious force.

Good people don't necessarily do good things, and bad people do. Good or bad does not depend on a certain law, even the worst jungle law. Everything depends only on one power and the power that cannot be understood. This power does not belong to anyone, but at the same time belongs to everyone. This power has a clear direction, but only has a vague purpose. This kind of power will not build anything, but its destruction will become a kind of construction.

It seems like a psychiatrist that destroys the wonderland in our hearts to help us integrate into the real world. So, what kind of motivation is driving him to do this? We can't know.