Story: The story seems very much like a reverse harem manga, one girl, 4 suitors to choose from. However, the last vol. takes such a sharp turn in such a random and horrible way that anything enjoyable from earlier chapters is completely wiped out.
Art: The artwork is nicely done.
Character: There is little character development through the story and the 4 suitors have very strong personalities, though the reason for this is explained near the end.
Enjoyment: I enjoyed the manga up until the very last moment which reveals why the 'air girl' is invisible to everyone. The ending was completely out of place and pace with the story making it seem as though in the end the editor told the artist/author to do something different and this failure was this result.