Akio Mori cited this case in support of his controversial "game brain" theory,[27] which has been criticized as being nothing more than superstition.[28] Girl A was reported to be a fan of the death-themed flash animation "Red Room",[29] a claim used in support of the theory. It was also known that Girl A had read the controversial novel Battle Royale and had seen its film adaptation, which centers on young students fighting to the death.[30]