This anime is just not for children, not because of the harshness of the content, but because of its deep symbolism and oddness of form. For example: The first episode is like watching "The Wall" from Pink Floyd in the sense that its almost unintelligible. No child is going to get it.
The first story -initially- has words scrawled across the screen signifying sound, like the old "Batman and Robin" TV series. Those fade pretty quick, thankfully. Still I don't know if I want to watch rest of the episodes. The first one was just too .... insane and reading the titles that are available, all three episodes are illusion worlds.