 It was announced in January 2015 that Junnosuke Watanabe, along with members of the team that initially conceived Bis would be putting together a successor group Bish.Auditions were held and the group made their debut in March.Billie Idle held a concert titled "Brand-new Idle Society" on December 12, 2015, which also featured Pop, Maison Book Girl, Lui Frontic Akabane Japan and Tentenko.