[quote=@harinezumikouken]
[@Lucius Cypher] - What's your interpretation of the black cat?
[/quote]

"Curiosity killed the cat" basically. The black cat represents the girl's own naivety and wonderment. At the beginning, it was just picking at loose apples but didn't quite take the bite. But after the girl was recruited to become the maniac pixie dream girl, the cat ate a bit of that apple and turned into an utter doll; in more ways then one. Yes the cat and in turn the girl turned into a pretty toy, but that's just the thing; she became a toy, a tool, a puppet, nothing more then a physical component to a larger scheme of things. She'd never realize this of course, because that's what is she suppose to be right? Something cute, something playful, something that everyone would want. But by becoming a doll, by taking that bite, what she could do with her life became so much more limited. All the more horrifying for her when she realizes what she does to others, and knowing that she can't do anything about it any more.