Ibara no OuFollow

So I read this manga sometime ago and it was just brought back to my attention by the fact that it has recently been adapted to an animated movie. From what I have heard the movie takes some extreme liberties with the original plot line. I however haven't watched it yet and was wondering if anyone had seen both the movie and read the manga already and would be willing to give an opinion. I am currently downloading the movie and will give mine after watching it. For now all I can say is that if you have the time you should check out the manga because it was fairly good.