Board Thread:General Discussion/@comment-9756677-20150812204931/@comment-9756677-20150813152906

The puppet really is a demon, but it isn't possessing him, although it's controling him. He put him to sleep almost like... a brother. What if he is some kind of family demon and for some reason he was ordered to take control of the boy's body?

That quote is so big it puzzles me more than anything. I understand more of less what "happened" in the quote, but I don't get the meaning. I know it was Nemu/the puppet who said it (only in anime or was it also in the manga???) but does it come from somewhere, a book or something?