It is the anime version movie, with extra scenes. Very good animation, incredible music. It was very sad to see how it ends again, uf very complicated. I need the continuation and see how they kill more demons because I was very angry. I love the extra scenes, very good that do not change the story but help to give more depth to the world of anime.
It is difficult to see the same thing again with some extra scenes, the first two chapters we see how he gets to go to the train, and how he feels that something is not right. We also see a little more of the family and why it is as it is. There is more character development in this short anime that adapts the movie if you saw the movie and you don't remember very well, everything watching the series will help you.