Let's resume this as an extremely detailed animation, the devotion and care of the animators really take place on this anime and it's what it makes it so unique. The plot and characters are amazing by themselves, even that sometimes some of them don't feel exactly human or emotional, it's actually what the main story needs and it fits really well, but, not everything about it it's good, when the story needs more human characters, they take a role that almost make them seem like fake people, and that makes you loose the bond with them. It's a great story, with an almost perfect animation and good intervention of this with the characters, when they act how they're supposed to be.