For the standards of society as mankind has made it, moral values are needed to keep everything in check. There are two ways you could look at it. The first is this: standard society of the modern human in most situations across the globe has some form of moral standards or another. So using that ar...

I have a rather interesting thing to point out. When mentioning the pact, the forest girl says that the humans were to stay in the "sealed world" or something to that extent. Could it be that Etria is in a separate world? It would explain the sheer enormity of the labyrinth quite well...By...