During the tour, this is a smartphone game that can be played once a day exclusively for "one room" members. Participants will receive special content (character wallpapers drawn Iyori Shimizu and message videos) depending on their progress! Furthermore! Anyone who successfully completes the game during the tour will receive a "back number original finger ring" at each arena tour venue! *Please note that the gift will only be given to those who attend each arena performance venue. We hope you enjoy it. >>Click here for details http://oneroom.info/free/feature/?id=14&hash=3abf9 *This game is for smartphones only. Please access it on your smartphone. [Report your progress] Tweet your progress using the hashtag! ▼Hashtag #Mirrorballchan