You have to remember... Story: 7 Three girls stepped into a mysterious building and experienced weird things there. The basic concept is not new, but the atmosphere makes it oppressive. Characters: 7 Well, there is no character development here, but this is not that kind of anime, so it's not a crime if you understand what is happening. Art: 8 The most debatable aspect of this movie are it's artistic choices. The background made with CGI, while the characters were made with rhotoscopic technique. It's really unique but not for everyone.Animation: 8
The rating of the animation, along with the art itself, absolutely depends on the person. Some will find it interesting, others will say it's horrible.

Music: 7
There aren't many of them, but they're not really needed here.