I saw this film at a doc festival and here's what I took away in my notes....not so pleasant...
The film to me was a glimpse and commentary on the Japanese pop idol culture. Alongside the performance aspect is the social engagement side...managed interaction events between the fans (mostly men) and the younger (under 20) girls. This a marketed and controlled industry with the "fans" voting in competitions for the next big thing. Borne out of recession times it gave people something to socially "cling" to. My final note was "one screwed up society". Judge for yourself.
Review of Tokyo Idols
