Based on the anime series Legendary Idol Eriko (Idol Densetsu Eriko), that is currently being fansubbed by Licca Fanbubs (http://liccafansubs.blogspot.com) and KiteSeekers (http://kiteseekers.blogspot.com).
Pages 12-13 have a guest appearance by Yoko Tanaka, from Idol Tenshi Youkoso Yoko.