In 2009, the band wave has long since faded, and the singer era will soon be over. A new force named AKB48 is emerging, gradually replacing Morning Musume as the first female idol group; Denis is still standing, Nogizaka 46 is still in the draft stage... The idol era is coming. At the same time, a band of high school students is about to start activities. All this has to start in a classroom.