I began watching this movie because of Okada Masaki, an actor whom caught my attention by being brilliant in most of his roles (He has a minor role in this movie but still managed to get an acting nominee for best supporting role). What made me keep watching was the thrilling story, something I did not expect (I didn't even read the synopsis before I began watching), the dark feeling and the overall fantastic actors. One would not think that 37 middle school students can create such an atmosphere. The woman who played the main character, Takako Matsu, was amazing in her role. But, let me quote "let's not forget the amazing ensemble cast of young Japanese actors who ultimately steal the show from Matsu's cold as ice teacher with their riveting performances as existential youth gone wrong".
This masterpiece was completed by their use of Radiohead's Last Flowers.
All I can say is: "Watch and be amazed" because this will mess with you.