Nemosu Idol Sosenkyo BattleMovie

Members of a group of idols "Houkago Puritei Seitokai" are abducted in Akihabara and are entered to participate in a webcast game where the talents of the Idols are determined by a general election of the spectators. Each round the winner advances, but the loser will be subjected to rape, humiliation and death. Who will reign the title of Number one?