Usually I don't like ghost stories because they are inevitably sad and it ending up tragically is a forgone conclusion (either the live one dies or the dead one moves on).
Never the less after the frustrating build-up the story became really interesting.
If you knew the original meaning of "Tragedy", you'd knew it means a drama with a bad, sad ending.
The adventure of the protagonist, who is doomed from the start and is fighting a losing battle.
This is certainly not the case here.
Sure they suffer a lot but that makes the ending so much...