Two traditional schools in Hyogo and Osaka, Kansai. Osaka Takizakura Girls' High School, which has successfully become a brand due to the active selection of idol clubs in the entertainment course, and Hyogo Tsubaki Sakika Girls' High School, the former school for further studies. The daughters of the directors of the two opposing schools, Rurika (Miho Watanabe) and An (Nanafu Tomita), meet through idol activities, and the small world around them has undergone tremendous changes. Looking for something more important than an important promise...