I'm sorry. I'm just not going to put this out there as one of my favorites. Air had all the elements of a compelling story, but I'm going to go on record in saying that I don't think it was well executed. You had two sets of stories that were completely irrelevant to the overall storyline. I understand this was adapted from a Visual Novel. But I feel like the other girls were placed in the series as a means to torture Yukito.
When it comes to the main plot, Minagi and Michuru were pointless; and so was Kano. They seemed to me more like filler stores moreso than anything else. It's like they were trying to make the series last 13 episodes, so they included them.
I would have preferred that the series constrain itself to telling more about Yukito and his mother, as well as Misuzu and Haruko; and then fleshing out Lady Kanna's story instead of includinging it in an OVA.They really didn't do a good job of fleshing out the Winged people's story. I honestly feel like I wanted to spend the entire series in the past and follow winged people and then include Yukito and Misuzu in the OVA as an ending.
Questions that I feel really deserved answers were:
For me, this one just has way too many holes in the story. I liked the characters, except for Hakura. I found her to be completely unbelievable as she was written. I might accept it more readily if she had known about the curse and maintained her distance in order to keep Misuzu alive, but that isn't how they explained it. And I didn't really care for the insinuation that she might have cultivated a relationship in the future with Misuzu's father who was at best a deadbeat dad.
There was nothing uplifting about the ending. The two children on the sand at the end needed more than a single line of dialog if they were meant to be some kind of exposition. Like I said, this has all the elements of a great story, but it just didn't make it in my book. I can't really agree with everyone else.