it will leave you hanging questions after reading this manga. and i guess that's its charm? i like how it went and ended. i love the mystery it gave. it was bittersweet and it made me think about the saying "ichigo ichie" which was indeed a one in a lifetime encounter for the both of them.
One shot - it was a really sweet story, until the end :(. That's wasn't how I wanted it to end :( Still, it was an interesting read. Iv'e see the same concept used elsewhere, but they made a series out of it and it had a much different ending. Wish I could remember the name.