There are already countless eloquent reviews for this so I won't keep flailing around trying to come up with an adequate review. What I can say is that these short and sparse words managed to move me. Hit me in a very, very dark and not so small place within me right now.
Don't let the tags put you off and don't make the mistake I did by putting this off for later. I'm actually content with the story ending here, but I'm also glad to know the author's planning on continuing the story.