I consider this an interesting, mysterious anime that leaves you wanting to know more about the identity of the 'real' killer or attacker, until you find yourself following this anime until the very last episode. The mysteries reveal themselves little by little over the episodes, where all of the important characters in the story are involved in the search of this 'imaginary or real' attacker who keeps attacking 'troubled or cornered' people. The whole idea of this story can be highly disturbing to some people, but I personally think this is quite a 'mind opener' that keeps you thinking a step further. (show less)