I would have given this a better rating if not for the clunky CGI. Other than that, I absolutely love everything! The story built up from a boring slice-of-life to a sudden mystery and a shift into a mood of dread and despair! The use of neutral colors in the anime makes it even more terrifying! I recently watched a lot of pure, refreshing, and joyful anime, and being able to watch something dark makes me ecstatic!