A beautiful short story about a boy and his ghost girlfriend. The only bad part about it is that it is short, and I would have loved to see the main pair just hang out more. Its a very focused story dealing with the seven mysteries of the school, and very rarely strays from that path. I loved the beginning and middle, but I do wish we got a little more to the ending. The story really leaves you wanting for more, but in a good way. The story does wrap up though, and I am happy to see them get their happy end.
There is also an anime (Dusk Maiden of Amnesia) with 12 episodes. It does have differences from this story, but it basically tells the same story in the end. Its decent, though I do feel like the ending was better able to describe what happened to Yuuko and Tenichi in the end.
Great story, 10/10, loved it. I am thankful I stumbled on to this all these years latter.