Not a horror movie
This is not a horror movie at all... I don't understand why some people got scared?
It's like it says here on IMDB: "A supernatural drama about grief".
Besides that, it's a really bad drama... I haven't been so bored watching a movie, for as long as I remember.
The story was bad and the twists were stupid, and had basically no relation to the plot.
Avoid this movie at all costs.