It’s not easy to even describe the plot of the film. On the surface it follows a middle school class of Japanese children that each battle bullying, sexual abuse, humiliation, suicide etc while obsessing over a fictional artist named Lily Chou-Chou. On a deeper level it explores the human ether/spirit/meaning of life and love. A deeply complex acid trip all while jamming out on classical music.
Narrative linearity is of secondary concern to Iwai. This film is a canvas, and its exposition is a marvel. Like 'Upstream Color', just go with it - mood trumps structure, and the aesthetic is astonishing. 'All About Lily Chou-Chou' is less of a story and more of an experience. If are you going to deconstruct semantically, it's an amiable analysis of naive pop fanbases and the romanticist, illusory world they create.